Hi everyone & Adrian, I created the Apple Lisa documentary. Just wanted to mention that it's available digitally for streaming on Amazon Prime, as well as through Vimeo for streaming/download. I'm happy with how the DVD came out, but I'd actually prefer people to watch it in 1080p.
Love that there's a download option. I have a few indie documentaries in my library, and I'm always happy to see that there's a way to own it, even if physical media (or at least HD media) is beyond the reach of the filmmakers. I don't know (yet) if there's a cost associated, but if there is, your trust is appreciated.
FYI - Kodak is very much still alive. No where near the behemoth it once was, but they're returned to their roots of making film. Smarter Every Day did a wonderful video series touring their production facilities in Rochester, NY.
Indeed. For a brief moment in 2020, I was messing around filming on Super 8 film, and thankfully since Kodak was still around I still was able to get film that could still be developed. I think it was Ektachrome.
That's actually really good to hear. There is some tech that we still have some use for, and took ages to perfect, that can just completely disappear when a company folds or sells off for the third time, taking all their hard-earned IP with them. It seems like such a waste.
@@nickwallette6201 This is why Open Source Hardware, and even just Open Source generally is such a good thing. Especially a project like Badger6502 (I can only find Badger2040 Is it a different project?) Anyways, if he stops, and the hardware isn't published, I'm never going to get that repaired (well, maybe I could glue the speaker!) There will be professional Open Source cameras, if there aren't already, and I see it like an extra-good warranty !
OMG - I have TWO of those teclab units in my garage - for all of my equipment.....They are TOTALLY awesome and VERY strong!!!! AND teclab is STILL in business!!! I recently asked them for quote on putting casters on those desks....They STILL have parts and accessories for them......tried and true stuff.....
That computer desk, the blue and white one was quite common in one of my early jobs. The building we had come to occupy at the University I worked at was full of them, and they were amazing.
I still buy DVD's and Bluerays. People might think i'm silly, but i have movies and series on both that i will own and be able to play for the rest of my life. Doesn't need an internet connection, doesn't need a computer, just a player and a TV. When the power goes out i can watch movies on an old laptop for quite a while (battery backups are amazing).
@@proCaylak I have optical media that is over 30 years old at this point. It all still works just fine. Now, burned media, that is definitely subject to rot as the organic dye layer can easily degrade over time. Factory pressed discs i have had no issue with. And if it fails, well, i have gotten my fair use out of it. I have had a LOT more non-optical storage fail over time than i have ever had failures of optical media.
@@jeromethiel4323 fair enough. I just wanted to say it because I have seen a mostly rotten CD Video disc(not to be confused with VCD) via Techmoan. I believe that disc was pressed rather than burned as it was a demo disc that predated CD-R standard.
What's funny about the Badger6502 is that back in the 80s, there were companies that were taking C64s, and customizing them for control applications using the cartridge port as the control interface, in much the way you would use modern microcontrollers now. Full circle.
I think such a c64 was found in the Computer Reset cleanup. 8bit guy did a video with it in it (I think). It had a custom keyboard but the software was long gone.
Kodak isn't "gone" but they have certainly changed. They were very helpful with a forensics task I completed a few years ago that contributed significantly to the arrest of a serial killer here in Australia.
I saw you at VCF in Dallas but I didn't want to bother you. That place was packed. I ran into Action Retro, Usagi Electric, Macintosh Librarian, and 8-Bit Guy. It was great.
I *loved* the circle animation in Lode Runner and always wondered how he did it. Drawing a plain circle usually requires either trigonometry or square roots, both of which were slow slow slow on 8-bit systems. And the Apple II had a crazy screen layout with 7 pixels per byte which meant that calculating pixels positions required division by 7, also slow.
I'm reading that IEEE Spectrum article about the C64 now, and came upon this: "The circuitry that displays either sprite information or background information at any point on the screen is sometimes slow to respond and overlays the sprite on the background information only after it has missed a few pixels." Aha! My C64 back in the day was plagued with this problem. Sprites looked okay when the computer was just turned on, but over time sprites would 'erode' starting from the left-most pixel of each line, then moving steadily rightwards over time. It drove me nuts, but teenage me had no idea what to do about it. Looking back, I think it was heat that caused it: when the chip was cool, everything was fine, but run it for a while and it warmed up, and this issue would creep in as the cathode ray raced from left to right. An added heat sink and thermal paste might have helped, if I had only known such things existed! Ah, memories.
LOL You were like a kid when going through the magazine. (And it was awesome.) Your channel reminds me of days gone by. It's amazing how much I've forgotten.
I love your channel! I hope that in some soon future on this and main channel there will be more crt stuff beacuse i love those videos! I have collection of few crt tvs so your videos about crts help me a lot.
Tektronics, man i wanted an o-scope from them so badly when i was in college. It was all we had (with one exception) in our electronics labs, and they were just rock solid 100Mhz o-scopes. Which, at the time, were all you needed. All analog, all the time! No on screen display, no menus, just knobs and connectors. Simple, and yet so easy to use.
@@RS-ls7mm I agree. There was just something "organic" about those analog scopes. Sure DSO offers a lot too, but the ergonomics and "feel" just aren't there for me. Probably a failure on my part, as i am a dinosaur! ^-^ Now what digital does VERY well, is in logic analyzers. And i would have given a testicle to own a 32 channel one of those back in the day. Just could not afford one.
I still use tektronix's instruments daily at work. In the past 3 years we got some USB 3.1 spectrum analyzers (RSA 306B) and a couple of signal generators (TSG 4102A) that you can also control via LAN
Similarly I have a tiny ESP32 SBC that has VGA out, PS/2 ports for keyboard and mouse, an analog audio out port, a CF card for storage, and uses the old USB for power and com link to a host computer. I download an image that emulates a 8086 and CGA graphics. A menu allows choosing different flavors of MSDOS and even CP/M 86. Can run dev environments like Borland Turbo C or Turbo Pascal and of course various DOS games. Because the ESP32 is dual core, can dedicate a core do doing sound card emulation, so the games can run with decent sound. Is amazing to think this tiny little thing reproduces the functionality of the behemoth original IBM 5050 PC.
I'm not sure if you mean 1-4, or TRS-100, or TRS-80 Pocket Computers. One thing that irritates me is that all these different incompatible machines were labelled "TRS-80"! Obviously not your fault, but I think it was a sign they were doomed.
@@squirlmy The Model II was the odd duck out of the first 4. Completely different architecture from the I, III, and 4. The II, 12, and 16 costed as much as a car at times! But, to be fair, Tandy did market the II et al to large businesses. The Model 2000 was a weird one. Why on Earth did Tandy choose the 186 instead of the 286 was beyond me. The 186 had compatibility issues with many PC programs. The 186 did see success in embedded controllers in later years.
Lode runner was a classic game. Plus, it came with a level editor so you could make your own. I made so many lode runner levels in college. They all kinda sucked, because i was learning the editor, but i had fun. Since the game as i had it came with 99 levels, every mechanic was in one or more levels already. There wasn't much i could add.
Thoroughly enjoyed this one! Definitely will be watching again when I return from vacation. Regarding learning assembly-language, I think that would make an interesting video series!
That 5170 was an AT/370. It didn't just connect to mainframes, it was kind-of a mainframe itself. I used something similar in the early 2000s which was a S/370 card in an RS/6000 (a bit niche, I'll admit). "The IBM AT/370 was a PC-based mainframe-compatible system that was discontinued in April 1987. It was designed to emulate IBM's System/370 mainframe computers"
Never apologize for your videos! They are one-bagillian times better than most of the brain-rot videos out there. You could film your videos on that Fisher Price cassette toy camcorder from the 1980's and it would still be better than literally any Mr. Beast video. You are, hands down, my favourite UA-cam channel... full stop! Thanks for all the great videos!
Toshiba spun off their flash memory business.They are called Kioxara now. But Toshiba still makes semiconductors themselves. I don't know if they contract out the manufacturing like just companies or if they still run fabs.
That Fluke 8:50 was the one my dad had and the first digital multimeter I leaned to use. Before that he had a beautiful analog one that which got lost with the moves.. good times where I was tinkering with electronics in high school
I love how dedicated the TRS-80 "community" is! It's great to see so many reproduction parts available to keep these machines running and even to create entirely new ones. Well done y'all!
I actually never heard of a TRS-80 group still building hardware. They have been pretty hidden compared to the other groups. TRS-80 model 1 was my first computer and where I learned everything.
My dad had the pink 6502 instruction book in about 1981/2 when he was working on a digital imaging system on the Apple 2+ in assembly language- Sadly he never finished it because funding was pulled by the backing company.
Adrian, you are posting a boatload as it is so please don’t apologise for not sticking to some kind of schedule due to illness. Take good care of yourself, please 😊
Meatloaf?!? "Paradise by the disk drive light... You got to play what you can, And let Apple do the rest! Aint no doubt about it we were doubly blessed! We hat the 6502 chip and Woz's best!
Adrian, there's another 6502-Pico project that's much further along. It's called PICO-56, and it's a pretty dang cool DIY kit. Has 12-bit color, like an Amiga, and a pretty spot-on boingball demo!
I use to work as a typeographer and our company did the typesetting for a number of IEEE magazines including Spectrum. I'm not only confident that I probably did some of the work on that magazine edition, I may have even done some of the work on that Comodore 64 article.
8:30 My other hobby besides retro computing is analog photography. Kodak is still kicking. They filed for Chapter 11 10 years ago, and were split into two companies, Kodak Eastman who handles manufacturing of film (not just photographic film), and Kodak Alaris who packages and resells photographic film. Kodak Alaris also took a lot of the digital IP that Kodak had. (Asianometry has a great documentary on why Fuji Film didn't suffer the same fate as Kodak, and no, it wasn't because Kodak ignored digital photography.)
Those CPU hand books are neat. I got the official Zilog Z80 technical manual in the 80's. It's been invaluable for coding on the ZX81 and the ZX Spectrum. I still use it.
Woah. That TRS-80 Model 1 is awesome. I used to have a Model 2 when I was a kid. I learned to program on that thing. But, when I started watching retro computing videos on UA-cam, and saw the Model 1, that form factor won me over. I usually prefer authentic hardware, but that repro looks so good, and would be a really fun project. Hmmm.....
Physical media is king. I own a couple lifetimes worth of movies and tv on blu ray and dvd. the idea of handing control to netflix or amazon, with them saying what or when I can watch is just terrifying to me.
It was definitely anti-theft. I worked at hollywood video. If you put a new dvd through the scanner it sets off the alarm. If you open it completely and remove the strip it doesn't. We used to find those strips hidden throughout the store from time to time.
I've seen Eric selling those 6502 emulators with Lode Runner at Portland Retro Gaming Expo for several years now. Maybe this year will finally be the one where I actually buy one for myself.
Our Junior high shop class had something very similar to the PC EYE but for an Apple II. It would very slowly capture an image from a camera over the course of a couple seconds. If the subject moved in that time the picture was all wibbly. Somewhere I have some dot matrix printouts of the results.
Kodak is a leading global manufacturer focused on commercial print and advanced materials & chemicals. To this day. they still have a 300 million dollar avarage quarter revenue.
Did you ever test a weecee or any other "new" 486 mini pc? I would love to see a video on those type of retro pc versions and to get your take on whether they are worth the cost. Repurposed thin clients as retro gaming pcs, what is your rekommendation and opinion regarding those (Adrian)?
Raspberry Pi Pico microcontrollers are a quite interesting little chip that you can buy for a buck a pop - yet I am now looking at Raspberry Pi Pico 2 for exploration of x86 architecture translation (think Transmeta Crusoe, only it's architecturally similar to 80386 CPU) as it got two Hazard3 RISC-V microcontroller CPUs inside along with two Cortex M33 CPUs, to see what I can do with it (as I was planning on designing a RISC-V VLIW processor so I would want to see what I can do with limited hardware at first before I recode it for 64-bit hardware). And yes, the Raspberry Pi Pico 2 microcontroller also have a special ARMv7 / v8 M software translator inside its on-die bootloader that RISC-V CPUs use to understand exactly what the ARM CPU clusters want them to do. Still, honestly running 6502 softwares on the cheapest chip is epic and equally mind-blowing - imagine taking a Commodore 64 computer with you literally everywhere being small and compact.
It is not 5V tolerant in every scenario. It's safer to treat it as 3.3V only. From a Raspberry Pi engineer on their forums: "Please refer to the datasheet, but in short, you should use 3v3 to be completely safe. The pins tolerate 5v under certain circumstances, but not all."
The logo for that Meatloaf device reminds me of the BBC Master computer's logo with that 'M', it had me racking my brains for a bit trying to remember why it looked out of place yet familiar, kind of a confusing mix-up of 8-bit brands... :S
@@idolpx They're not that similar either - the BBC Master logo is monochrome and more ornate, consisting of two square arches in 3D perspective arranged to form an 'M', with two rows of text underneath in a serif font.
Getting a complete 8-bit computer working on the Pico is absolutely possible - the ZX Spectrum has a full emulation setup running on it (PicoZX) and there are projects around to build a portable games system around it.
That HP Luggagable-Computer ... I think I was working on one of them, most likely a predecessor as it only came with 256kByte (upgraded from 128kByte) shortly before I got myself an Amiga. It was definitely Unix but most of the OS sat in a ROM/EPROM as it had no hard drive. As far as I remember the programs weren't "loaded" from the ROM but actually directly running "from the ROM" which meant "Zero Load Time" and "Zero RAM foot print" - The system was incredible bare, a lot of stuff you take granted nowadays in bash and GNU-Tools simply wasn't there. No history in the Shell, pretty much all modern options missing from Tools like find, grep, ls and so on... Also it couldn't swap because it had no MMU and no HD, running out of memory was always just a single "ls |more" away. Oh, Pipes... pipes stored their data on the disk drive... it was slow, error prone and limited by what free disk space you had... just let that sink into your mind... I remember you even had to load awk from disk but at least that one was actually a bit more modern. All the stuff in the ROM was pretty fast for the time but have mercy if you accessed the disk drive... it also came with a basic set of networking tools - not what we nowadays consider networking like WWW, FTP, SSH, more a Network-Operating-Application with a Terminal Emulation and the ability up- and download stuff through X/Y/ZModem - it was hooked up to some Mainframe, though the owner did most work locally.
for the stem, I'd suggest printing PCCF. I don't think you need an enclosure, but you do need a hardened nozzle. My printer has components found to weaken when using PETG and changing colors thousands of times (which I do regularly since I have an MMU3 color add on. The PCCF is amazing. Apparently it's easy to print as long as you can do higher temps. Unlike things like nylon. It's very durable I could tell when I installed those parts.
29.97 is NTSC standard. We just call it 30 FPS because it's easier. I did some video editing of old school VHS and NTSC media, and 29.97 is the correct frame rate. You also had to get the frame order right, because it was interlaced. If you did NLE back in the day, and did a cut at the wrong frame, you'd get out of order frames, and the video would look like ass. Good times, good times. Took a tweaked computer to get it to work on a PC. And this is years after the video toaster came out. The PC architecture just wasn't well suited to video editing back in the day. Now, it's easy. Then, not so much. And by tweaked i mean i had to disable the clock in the taskbar, because that could interrupt the video processing and cause a glitched capture. And i had to run a RAID 0 card for throughput if i wanted to do TV quality (720X480) capture. A single 10K RPM drive just wasn't fast enough. But two 7200 RPM drives worked just fine.
9:26 you quickly flipped past an ad for CSC aka Computer Sciences Corporation. I worked for them in the U.K. 1991-1997, by then they were a very large IT outsourcing provider in Falls Church, Virginia with lots of large US defence contracts but nothing in the U.K. I worked for the company they took on as their first U.K. contract - we’d never heard of them. Later they merged with HP and became DXC now HPE.
Great content. As an idea next can u just talk a little about what u do not f your too long on a chair and don’t make it a point to stay active and not in front of a computer all day. Especially what do u so during the winter? Thanks just an idea
meatloaf? Considering the age of a lot of these developers and what they are working on, wouldn't surprise me if they listen to MeatLoaf 😂. Unless meatloaf is a kind of acronym or some such. I am going to check out the project site. Yeah. I'm a MeatLoaf/Steinman fan. I had this in the background while tinkering with something and "meatloaf" got my attention 🤣
Hey Adrian. Since you're deinterlacing in what is most likely a DV video, you should use the bob weaving deinterlacer. It should be a setting on Handbrake since Handbrake is really a front-end for FFMPEG that has that capability. It converts the 29.97i video to a 59.94p video (so close to a 60fps video). That's how it's originally supposed to play on progressive scan displays.
FYI, Every model I came stock upper case only (I know), and lower case was a modification that you could purchase from Radio Shack. It basically added a piggy backed RAM chip over the character 'RAM' chip, with one pin bent out (a chip select line I'd guess), with a wire running from that to somewhere on the motherboard. I think it was ~$50. The character ROM supported lower case, RS just didn't (ever) build in support for lower cast until the Model II and III
I have several model I's with no character mod. Might have been common, i don't honestly know. But i know the one i had back during the late 70's didn't have one. That computer is long gone, but i have since purchased more. And while some have mods (like the gold finger mod for the expansion port), none have the lower case mod. Did the lower case mod kill the graphical characters?
@@retrozmachine1189 Yeah, the circuitry for the video system enforced the blank space. The video system for the TRS-80 was pretty primitive, but it worked well for what it was. On my old school model 1 (from the 70's) if you pried the TRS-80 logo off of the monitor, it had knob holes, because it was just a B&W TV set slightly modified (no tuner) for use with the computer.
@johanlaurasia Yes, the Model I came by default with only 7 bits. Actually the 6th bit was derived from bit 7 and bit 5. When installing a lowercase mod, one had to cut the trace for this “deriving” logic and add two bodge wires. Like you said, a piggyback static RAM needed to be installed to add the additional bit. In fact, 2 legs needed to be bend up for the in and output for that one bit. The chip select was done in tandem with all the other bits.
@@jeromethiel4323No, the graphical characters were not killed by it. The lowercase mod just added another bit. By default only 7 bits were used for the ASCII storage and the 6th bit was derived. The 8th bit (when counting the derived one) did signal if it was a ASCII character (ASCII just needs 7 bits by itself) or if it was a graphics “character”. So, there were 6-bits of graphic characters (2 horizontal pixel and 3 vertical pixel). Adding a lower case mod just replaced the “derived” bit and therefore had no impact on the graphic character sets. Interestingly, after installing the lowercase mod, you still need an updated character generator. The early ones had lowercase characters, but the Model 1 system ROM didn’t support it and converted characters into a different place in the ASCII table when the derived bit was not there as expected - they never thought they needed it. So, the later character generators actually needed to have a set of character duplicated to make things work, fixing the software issue. See number four here for the character set with the duplications: github.com/RetroStack/Character_Generator_ROMs/tree/main/TRS-80%20Model%201/32-Option_2x256#combinations-and-features I am by the way the person Adrien is talking about (RetroStack).
as for the whole "physical Vs digital/streaming" I like streaming for the convienance and allows me to view material, but one drawback a lot of people don't mention about the streaming media is that the ISP can go down, robbing you of all access to all of your streaming platforms until your ISP goes back up, and if you don't have anything downloaded and no physical media, you're probably in for a boring time unless you have books stashed away
Ooooh. Back when i worked at the local cinema and we got ads created by a semi large media company in my area I always had to convert their videos to 23,97 fps so it would not be chopping / stuttering on the projection. They used all kind of sources and just made a dcp with the wrong frame rates and the projection server didn’t know what to do with that as it don’t go via a hardware scaler. AI remember I export to individual tiff, convert to individual jpeg2000, color correct to zxy color space and then combine to dcp. How much easier it would be if ppl learned what setting they used when exporting projects/filming content compared to where it was gonna be used. Still. I miss the old days working on those projectors. :) Christie.
^ Yep. On DVD, it might be 24fps telecine, but if it's not a major studio film, it's just as likely sourced from 60fps or 30fps. And it's always possible that it's some mish-mash of any or all of the above. This is why deinterlacing DVDs is not a good idea. I mean, at the ripping stage, anyway... Just encode it as interlaced and use whatever filter looks best in your video player. I'm particularly partial to the "TV simulator" filters that play it back with actual interlaced scanlines, like it would've been on a real CRT. Yes it flickers. Yes it's half as bright. That's because that's what the content really looks like.
much more practical to build a ZX81, or any of the Z80 lineup. Lots of available kits, Also lots of copies made behind the Iron Curtain, and in Latin America. TRS-80 is known as a US only thing, partly because TI had good lawyers. lol
@@squirlmy Yeah, I've built a ZX81 and a Harlequin 128K. I used to have a TRS-80 Model I in the 80's. Fun computer. I had it turning projects on and off using the cassette remote function. LOL. (PRINT CHR$ 9, I think).
The TRS-80 model 1 keyboard was pretty bad. A modern replacement with actually GOOD key switches is a godsend for people trying to keep these machines running. I knew a kid in middle school who had to load "KBFIX" from cassette just to use the machine, as the key bounce was so bad. And just typing the load command could take 5-10 minutes, because of the key bounce. Man, what we used to put up with. ^-^
The fix was later supplied in updated ROM versions. I think Level II version 1.3 had this fixed while previous versions still had this key bounce issue.
@@marcelerz Hmmm.. I wonder which version ROM i had in my model 1 back in the day. I never had really bad key bounce. I thought it was a better keyboard, but it might have been a ROM fix, i just don't know.
@@jeromethiel4323 If you can remember the initial prompt, it can give you a hint about the version you had. Level 1 only displayed the 'READY' prompt, while all Level 2 versions asked for the memory size with 'MEMORY SIZE' (in versions 1.0-1.2) or 'MEM SIZE' (in version 1.3). After entering or skipping this, it would display 'RADIO SHACK LEVEL II BASIC' written out, or 'R/S L2 BASIC' in the latest 1.3 version. As far as I know, the key bounce issue was fixed in version 1.3, along with the cassette interface software bug that required the XRX board in previous versions-a hardware fix for a software issue. Another interesting detail is that the text shortening mentioned above was done to save a few bytes on the ROM, allowing all these fixes to be implemented without increasing the ROM size.
@@marcelerz I know it was level two basic. Probably the last option. I think it asked Mem size, but that was so long ago i don't even remember accurately.
Not only keybounce, but also the cassette save and load routines in the early TRS-80 had a mistiming error which meant that even a slightly unstable motor speed in the cassette recorder would cause program loading to fail with a CRC error. Later revisions re-timed the loading routine to compensate for the error.
Layout for LodeRunner on the Apple][ is IJKL where I is up, J is left, L is right and K is down. U to dig left and O to dig right. The C64= was the same...
I miss the old Microsoft Help files for Visual Studio, every class and api call were documented quite well. I always used Conrad's game of life to bench mark things. I had a screaming version in assembler on the TI-99/4A. I usually just hard coded the easiest best known example so I didn't have to code the whole input section of the program, I think it was ... *** * * * *
Hi Adrian, when you showed the mandelbrot program on te eBadger6502 computer I had to test this on my AGON LIGHT 2 (ez80) computer with bbc basic. I get exactly the same results in 20 seconds 🙂. Perhaps not fair because the ez80 processor runs at 18.432MHz.
Is the ez80 a copy of the old 8080A? Because if so, then it's actually running at 2.048MHz since the clock generator contains a built-in divide-by-nine circuit. The reason for using that frequency is that it's easy to further divide it to obtain the common frequencies used in RS-232 communications.
I started with the ESP8266. That code still works but the current code uses the ESP32 WROVER module (Lolin D32 Pro). PI1541 is a cycle exact drive emulator. This is more like an SD2IEC but with more capabilities.
![Adrian's Digital Basement ][](http://yt3.ggpht.com/ytc/AIdro_k7CrQRe71qN6c0Ua7A1P_I8KkxjqLa70u0zYeCvdvnKw=s48-c-k-c0x00ffffff-no-rj)
Hi everyone & Adrian, I created the Apple Lisa documentary. Just wanted to mention that it's available digitally for streaming on Amazon Prime, as well as through Vimeo for streaming/download. I'm happy with how the DVD came out, but I'd actually prefer people to watch it in 1080p.
Love that there's a download option. I have a few indie documentaries in my library, and I'm always happy to see that there's a way to own it, even if physical media (or at least HD media) is beyond the reach of the filmmakers. I don't know (yet) if there's a cost associated, but if there is, your trust is appreciated.
I was a backer of the project, and I'm so impressed by how it turned out.
FYI - Kodak is very much still alive. No where near the behemoth it once was, but they're returned to their roots of making film. Smarter Every Day did a wonderful video series touring their production facilities in Rochester, NY.
The Disc Camera in the ad did not survive... worst camera I ever owned.
Thanks for the heads up. I will check that out 😊
Indeed. For a brief moment in 2020, I was messing around filming on Super 8 film, and thankfully since Kodak was still around I still was able to get film that could still be developed.
I think it was Ektachrome.
That's actually really good to hear. There is some tech that we still have some use for, and took ages to perfect, that can just completely disappear when a company folds or sells off for the third time, taking all their hard-earned IP with them. It seems like such a waste.
@@nickwallette6201 This is why Open Source Hardware, and even just Open Source generally is such a good thing. Especially a project like Badger6502 (I can only find Badger2040 Is it a different project?) Anyways, if he stops, and the hardware isn't published, I'm never going to get that repaired (well, maybe I could glue the speaker!) There will be professional Open Source cameras, if there aren't already, and I see it like an extra-good warranty !
OMG - I have TWO of those teclab units in my garage - for all of my equipment.....They are TOTALLY awesome and VERY strong!!!! AND teclab is STILL in business!!! I recently asked them for quote on putting casters on those desks....They STILL have parts and accessories for them......tried and true stuff.....
A nurse once told me to carry a tiny tube of cake icing since even if semi conscious, a loved one can put it under your tongue.
That computer desk, the blue and white one was quite common in one of my early jobs. The building we had come to occupy at the University I worked at was full of them, and they were amazing.
I still buy DVD's and Bluerays. People might think i'm silly, but i have movies and series on both that i will own and be able to play for the rest of my life. Doesn't need an internet connection, doesn't need a computer, just a player and a TV.
When the power goes out i can watch movies on an old laptop for quite a while (battery backups are amazing).
My older discs have started to degrade. Planned obsolescence is everywhere.
I hope you have backups of those media. disc rot is a terrible thing.
@@proCaylak I have optical media that is over 30 years old at this point. It all still works just fine.
Now, burned media, that is definitely subject to rot as the organic dye layer can easily degrade over time. Factory pressed discs i have had no issue with.
And if it fails, well, i have gotten my fair use out of it. I have had a LOT more non-optical storage fail over time than i have ever had failures of optical media.
@@jeromethiel4323 fair enough. I just wanted to say it because I have seen a mostly rotten CD Video disc(not to be confused with VCD) via Techmoan. I believe that disc was pressed rather than burned as it was a demo disc that predated CD-R standard.
I still buy the DVD/Blueray of any series that we really like. The rent for life model is not for me.
What's funny about the Badger6502 is that back in the 80s, there were companies that were taking C64s, and customizing them for control applications using the cartridge port as the control interface, in much the way you would use modern microcontrollers now.
Full circle.
I think such a c64 was found in the Computer Reset cleanup. 8bit guy did a video with it in it (I think). It had a custom keyboard but the software was long gone.
Don't apoloigize for long episodes! I enjoyed the in-depth thing you did with that Lode Runner device! Very cool!
Kodak isn't "gone" but they have certainly changed. They were very helpful with a forensics task I completed a few years ago that contributed significantly to the arrest of a serial killer here in Australia.
I saw you at VCF in Dallas but I didn't want to bother you. That place was packed. I ran into Action Retro, Usagi Electric, Macintosh Librarian, and 8-Bit Guy. It was great.
I may have spotted Vintage Geek in the registration line, but I couldn't remember his name. 😅
I *loved* the circle animation in Lode Runner and always wondered how he did it. Drawing a plain circle usually requires either trigonometry or square roots, both of which were slow slow slow on 8-bit systems. And the Apple II had a crazy screen layout with 7 pixels per byte which meant that calculating pixels positions required division by 7, also slow.
Very glad you are better. Good to see you in Dallas.
I'm reading that IEEE Spectrum article about the C64 now, and came upon this: "The circuitry that displays either sprite information or background information at any point on the screen is sometimes slow to respond and overlays the sprite on the background information only after it has missed a few pixels."
Aha! My C64 back in the day was plagued with this problem. Sprites looked okay when the computer was just turned on, but over time sprites would 'erode' starting from the left-most pixel of each line, then moving steadily rightwards over time. It drove me nuts, but teenage me had no idea what to do about it. Looking back, I think it was heat that caused it: when the chip was cool, everything was fine, but run it for a while and it warmed up, and this issue would creep in as the cathode ray raced from left to right. An added heat sink and thermal paste might have helped, if I had only known such things existed! Ah, memories.
They had me at "Chuck Norris jokes client." ^-^
Chuck Norris one round kicked Pi, and it's been irrational ever since! (i invented that one)
LOL You were like a kid when going through the magazine. (And it was awesome.)
Your channel reminds me of days gone by. It's amazing how much I've forgotten.
Looks like you've got some Licorice All-Sorts in that Haribo container.
I love your channel! I hope that in some soon future on this and main channel there will be more crt stuff beacuse i love those videos! I have collection of few crt tvs so your videos about crts help me a lot.
Tektronics, man i wanted an o-scope from them so badly when i was in college. It was all we had (with one exception) in our electronics labs, and they were just rock solid 100Mhz o-scopes. Which, at the time, were all you needed. All analog, all the time! No on screen display, no menus, just knobs and connectors. Simple, and yet so easy to use.
That's why I still use my 2445A as my main scope :)
The razor sharp display of the old scopes is still better than the low res digitized scopes.
@@RS-ls7mm I agree. There was just something "organic" about those analog scopes. Sure DSO offers a lot too, but the ergonomics and "feel" just aren't there for me.
Probably a failure on my part, as i am a dinosaur! ^-^
Now what digital does VERY well, is in logic analyzers. And i would have given a testicle to own a 32 channel one of those back in the day. Just could not afford one.
@@jeromethiel4323 I lucked out on the logic analyzer. Got an HP 1631D on eBay about 20 years ago. We used to fight over those at work.
I still use tektronix's instruments daily at work. In the past 3 years we got some USB 3.1 spectrum analyzers (RSA 306B) and a couple of signal generators (TSG 4102A) that you can also control via LAN
Hi Adrian. Thanks for the review of the Badger6503Pico! Loved seeing the fractal benchmark! Enjoying the channel as usual.
My first computer was the TRS-80. What a beautiful creation. And…the whole computer could be run on a pico. Lol
My first computer was also a TRS-80. A Model III. :)
Similarly I have a tiny ESP32 SBC that has VGA out, PS/2 ports for keyboard and mouse, an analog audio out port, a CF card for storage, and uses the old USB for power and com link to a host computer. I download an image that emulates a 8086 and CGA graphics.
A menu allows choosing different flavors of MSDOS and even CP/M 86. Can run dev environments like Borland Turbo C or Turbo Pascal and of course various DOS games.
Because the ESP32 is dual core, can dedicate a core do doing sound card emulation, so the games can run with decent sound.
Is amazing to think this tiny little thing reproduces the functionality of the behemoth original IBM 5050 PC.
That case would be great for all manner of retro-themed project computers - or even to just put Raspberry Pi’s into to just use as Linux computer.
I'm not sure if you mean 1-4, or TRS-100, or TRS-80 Pocket Computers. One thing that irritates me is that all these different incompatible machines were labelled "TRS-80"! Obviously not your fault, but I think it was a sign they were doomed.
@@squirlmy The Model II was the odd duck out of the first 4. Completely different architecture from the I, III, and 4. The II, 12, and 16 costed as much as a car at times! But, to be fair, Tandy did market the II et al to large businesses.
The Model 2000 was a weird one. Why on Earth did Tandy choose the 186 instead of the 286 was beyond me. The 186 had compatibility issues with many PC programs. The 186 did see success in embedded controllers in later years.
Lode runner was a classic game. Plus, it came with a level editor so you could make your own. I made so many lode runner levels in college. They all kinda sucked, because i was learning the editor, but i had fun.
Since the game as i had it came with 99 levels, every mechanic was in one or more levels already. There wasn't much i could add.
Thoroughly enjoyed this one! Definitely will be watching again when I return from vacation.
Regarding learning assembly-language, I think that would make an interesting video series!
That 5170 was an AT/370. It didn't just connect to mainframes, it was kind-of a mainframe itself. I used something similar in the early 2000s which was a S/370 card in an RS/6000 (a bit niche, I'll admit). "The IBM AT/370 was a PC-based mainframe-compatible system that was discontinued in April 1987. It was designed to emulate IBM's System/370 mainframe computers"
And now we can all run MVS and VM/370 with the Hercules application in Windows and Linux.
Exactly. Along with the XT/370. Must be exceedingly rare.
There was also the P/390 which implemented the ESA/390 architecture in a custom Fujitsu gate array on a PCI card.
@@douro20 Thinking back, I think the card in the RS/6000 was a P/370, maybe a predecessor of P/390?
Never apologize for your videos! They are one-bagillian times better than most of the brain-rot videos out there. You could film your videos on that Fisher Price cassette toy camcorder from the 1980's and it would still be better than literally any Mr. Beast video. You are, hands down, my favourite UA-cam channel... full stop! Thanks for all the great videos!
Seconded!
Your MMC´s are not too long! Everything you do is perfect in length, but I´m 50 and have an attention span of like forever. ;)
Love the mail calls, always a blast!💖
Toshiba is still making semiconductors! Kioxia is their brand and they make the best flash memory on the market!
I guess they are better than the upstart Chinese for now.
Toshiba spun off their flash memory business.They are called Kioxara now. But Toshiba still makes semiconductors themselves. I don't know if they contract out the manufacturing like just companies or if they still run fabs.
That Fluke 8:50 was the one my dad had and the first digital multimeter I leaned to use. Before that he had a beautiful analog one that which got lost with the moves.. good times where I was tinkering with electronics in high school
I love how dedicated the TRS-80 "community" is! It's great to see so many reproduction parts available to keep these machines running and even to create entirely new ones. Well done y'all!
I actually never heard of a TRS-80 group still building hardware. They have been pretty hidden compared to the other groups. TRS-80 model 1 was my first computer and where I learned everything.
Don't worry, Adrian, your content is worth the wait.
My dad had the pink 6502 instruction book in about 1981/2 when he was working on a digital imaging system on the Apple 2+ in assembly language- Sadly he never finished it because funding was pulled by the backing company.
Adrian, you are posting a boatload as it is so please don’t apologise for not sticking to some kind of schedule due to illness. Take good care of yourself, please 😊
Meatloaf?!?
"Paradise by the disk drive light...
You got to play what you can,
And let Apple do the rest!
Aint no doubt about it we were doubly blessed!
We hat the 6502 chip and Woz's best!
I love ❤ seeing the old UNIX monster in the background!
Adrian, there's another 6502-Pico project that's much further along. It's called PICO-56, and it's a pretty dang cool DIY kit. Has 12-bit color, like an Amiga, and a pretty spot-on boingball demo!
I subbed to Eric's channel a while back. Highly recommended!
I use to work as a typeographer and our company did the typesetting for a number of IEEE magazines including Spectrum. I'm not only confident that I probably did some of the work on that magazine edition, I may have even done some of the work on that Comodore 64 article.
8:30 My other hobby besides retro computing is analog photography. Kodak is still kicking. They filed for Chapter 11 10 years ago, and were split into two companies, Kodak Eastman who handles manufacturing of film (not just photographic film), and Kodak Alaris who packages and resells photographic film. Kodak Alaris also took a lot of the digital IP that Kodak had. (Asianometry has a great documentary on why Fuji Film didn't suffer the same fate as Kodak, and no, it wasn't because Kodak ignored digital photography.)
Now if they would just start making 126 Instamatic cartridges again. I don't feel like fooling with the 35mm to 126 adapter cartridges.
I love black licorice, so refreshing.
Those CPU hand books are neat. I got the official Zilog Z80 technical manual in the 80's. It's been invaluable for coding on the ZX81 and the ZX Spectrum. I still use it.
Woah. That TRS-80 Model 1 is awesome.
I used to have a Model 2 when I was a kid. I learned to program on that thing. But, when I started watching retro computing videos on UA-cam, and saw the Model 1, that form factor won me over. I usually prefer authentic hardware, but that repro looks so good, and would be a really fun project. Hmmm.....
I used to have that HP liggable with the orange plasma display back when I was a kid.
Remember Adrian, Stay Healthy, Stay safe.
That Harubo looks like what is called in the UK Liquorish Allsorts
I got a picture with you at VCF SW and totally forgot to send it to you! 😭
Physical media is king. I own a couple lifetimes worth of movies and tv on blu ray and dvd. the idea of handing control to netflix or amazon, with them saying what or when I can watch is just terrifying to me.
Ah - 8-Bit Dance Party… sometimes you only realise you’ve been missing something when you hear it again 😊
I miss Dead Parts Bin and Rammy too :')
It was definitely anti-theft. I worked at hollywood video. If you put a new dvd through the scanner it sets off the alarm. If you open it completely and remove the strip it doesn't. We used to find those strips hidden throughout the store from time to time.
I love how two of my favorite tech UA-camrs (you and Techmoan) are T1D People.. I am T2 so lows aren't as easy to get for my kind haha
TRS-80: One user's "Trash" is another user's "Triss"
I've seen Eric selling those 6502 emulators with Lode Runner at Portland Retro Gaming Expo for several years now. Maybe this year will finally be the one where I actually buy one for myself.
Our Junior high shop class had something very similar to the PC EYE but for an Apple II. It would very slowly capture an image from a camera over the course of a couple seconds. If the subject moved in that time the picture was all wibbly. Somewhere I have some dot matrix printouts of the results.
Those Teclab benches are still very much in production.
I got really good at removing those DVD case sealing stickers in one piece. It is easier than people realize.
Kodak is a leading global manufacturer focused on commercial print and advanced materials & chemicals. To this day. they still have a 300 million dollar avarage quarter revenue.
That meatloaf thing is awesome
Color-Rado looks like a colorful play on Colorado.
I enjoyed the look through the magazine. I live near the Sydney "home" of various defence and aerospace companies. Cool
Very cool haul you got there, I'm jealous
Did you ever test a weecee or any other "new" 486 mini pc? I would love to see a video on those type of retro pc versions and to get your take on whether they are worth the cost. Repurposed thin clients as retro gaming pcs, what is your rekommendation and opinion regarding those (Adrian)?
Meet the Loaf that led me through the Net to Mt Fuji
Raspberry Pi Pico microcontrollers are a quite interesting little chip that you can buy for a buck a pop - yet I am now looking at Raspberry Pi Pico 2 for exploration of x86 architecture translation (think Transmeta Crusoe, only it's architecturally similar to 80386 CPU) as it got two Hazard3 RISC-V microcontroller CPUs inside along with two Cortex M33 CPUs, to see what I can do with it (as I was planning on designing a RISC-V VLIW processor so I would want to see what I can do with limited hardware at first before I recode it for 64-bit hardware). And yes, the Raspberry Pi Pico 2 microcontroller also have a special ARMv7 / v8 M software translator inside its on-die bootloader that RISC-V CPUs use to understand exactly what the ARM CPU clusters want them to do.
Still, honestly running 6502 softwares on the cheapest chip is epic and equally mind-blowing - imagine taking a Commodore 64 computer with you literally everywhere being small and compact.
RP2040 is not 5V tolerant, at least officially. Newer Pico 2 is actually 5V tolerant
It is not 5V tolerant in every scenario. It's safer to treat it as 3.3V only. From a Raspberry Pi engineer on their forums: "Please refer to the datasheet, but in short, you should use 3v3 to be completely safe. The pins tolerate 5v under certain circumstances, but not all."
The logo for that Meatloaf device reminds me of the BBC Master computer's logo with that 'M', it had me racking my brains for a bit trying to remember why it looked out of place yet familiar, kind of a confusing mix-up of 8-bit brands... :S
The logo is a throwback to the C64 logo & badge. I've never seen the BBC Master's logo.
@@idolpx They're not that similar either - the BBC Master logo is monochrome and more ornate, consisting of two square arches in 3D perspective arranged to form an 'M', with two rows of text underneath in a serif font.
It’s the ‘M’ in the chicken lips logo, rotated -90 degrees. The MEGA65 uses the same M
Getting a complete 8-bit computer working on the Pico is absolutely possible - the ZX Spectrum has a full emulation setup running on it (PicoZX) and there are projects around to build a portable games system around it.
Great video!
That HP Luggagable-Computer ... I think I was working on one of them, most likely a predecessor as it only came with 256kByte (upgraded from 128kByte) shortly before I got myself an Amiga. It was definitely Unix but most of the OS sat in a ROM/EPROM as it had no hard drive. As far as I remember the programs weren't "loaded" from the ROM but actually directly running "from the ROM" which meant "Zero Load Time" and "Zero RAM foot print" - The system was incredible bare, a lot of stuff you take granted nowadays in bash and GNU-Tools simply wasn't there. No history in the Shell, pretty much all modern options missing from Tools like find, grep, ls and so on... Also it couldn't swap because it had no MMU and no HD, running out of memory was always just a single "ls |more" away. Oh, Pipes... pipes stored their data on the disk drive... it was slow, error prone and limited by what free disk space you had... just let that sink into your mind... I remember you even had to load awk from disk but at least that one was actually a bit more modern.
All the stuff in the ROM was pretty fast for the time but have mercy if you accessed the disk drive... it also came with a basic set of networking tools - not what we nowadays consider networking like WWW, FTP, SSH, more a Network-Operating-Application with a Terminal Emulation and the ability up- and download stuff through X/Y/ZModem - it was hooked up to some Mainframe, though the owner did most work locally.
It was the Integral PC, utilising a 68000 and running HP-UX from ROM. The HP Journal article from October 1985 is worth reading for some details.
for the stem, I'd suggest printing PCCF. I don't think you need an enclosure, but you do need a hardened nozzle. My printer has components found to weaken when using PETG and changing colors thousands of times (which I do regularly since I have an MMU3 color add on. The PCCF is amazing. Apparently it's easy to print as long as you can do higher temps. Unlike things like nylon. It's very durable I could tell when I installed those parts.
29.97 is NTSC standard. We just call it 30 FPS because it's easier. I did some video editing of old school VHS and NTSC media, and 29.97 is the correct frame rate. You also had to get the frame order right, because it was interlaced. If you did NLE back in the day, and did a cut at the wrong frame, you'd get out of order frames, and the video would look like ass.
Good times, good times. Took a tweaked computer to get it to work on a PC. And this is years after the video toaster came out. The PC architecture just wasn't well suited to video editing back in the day. Now, it's easy. Then, not so much. And by tweaked i mean i had to disable the clock in the taskbar, because that could interrupt the video processing and cause a glitched capture. And i had to run a RAID 0 card for throughput if i wanted to do TV quality (720X480) capture. A single 10K RPM drive just wasn't fast enough. But two 7200 RPM drives worked just fine.
Is it called Meat Loaf as a spoof of the C64 being called a Bread Bin?
It could be taken that way too. ;)
9:26 you quickly flipped past an ad for CSC aka Computer Sciences Corporation. I worked for them in the U.K. 1991-1997, by then they were a very large IT outsourcing provider in Falls Church, Virginia with lots of large US defence contracts but nothing in the U.K. I worked for the company they took on as their first U.K. contract - we’d never heard of them. Later they merged with HP and became DXC now HPE.
I was hoping he'd see an advert for Plexus. It would have been hilarious.
Great content. As an idea next can u just talk a little about what u do not f your too long on a chair and don’t make it a point to stay active and not in front of a computer all day. Especially what do u so during the winter?
Thanks just an idea
Hey Adrian, love the videos. Seems the audio quality is different. Keep up the great videos
Now I kinda want to see a full ceramic/gold top c64 hehe
meatloaf? Considering the age of a lot of these developers and what they are working on, wouldn't surprise me if they listen to MeatLoaf 😂. Unless meatloaf is a kind of acronym or some such. I am going to check out the project site. Yeah. I'm a MeatLoaf/Steinman fan. I had this in the background while tinkering with something and "meatloaf" got my attention 🤣
I had COVID-19 finally and got over it too, and then got a cold I am still getting over.
Ugh same. Apparently I even catch pandemic viruses when they're retro.
Hey Adrian. Since you're deinterlacing in what is most likely a DV video, you should use the bob weaving deinterlacer.
It should be a setting on Handbrake since Handbrake is really a front-end for FFMPEG that has that capability.
It converts the 29.97i video to a 59.94p video (so close to a 60fps video). That's how it's originally supposed to play on progressive scan displays.
FYI, Every model I came stock upper case only (I know), and lower case was a modification that you could purchase from Radio Shack. It basically added a piggy backed RAM chip over the character 'RAM' chip, with one pin bent out (a chip select line I'd guess), with a wire running from that to somewhere on the motherboard. I think it was ~$50. The character ROM supported lower case, RS just didn't (ever) build in support for lower cast until the Model II and III
I have several model I's with no character mod. Might have been common, i don't honestly know. But i know the one i had back during the late 70's didn't have one. That computer is long gone, but i have since purchased more. And while some have mods (like the gold finger mod for the expansion port), none have the lower case mod.
Did the lower case mod kill the graphical characters?
@@jeromethiel4323 The only issue with the LC mods I can remember was no proper descenders on the characters.
@@retrozmachine1189 Yeah, the circuitry for the video system enforced the blank space. The video system for the TRS-80 was pretty primitive, but it worked well for what it was.
On my old school model 1 (from the 70's) if you pried the TRS-80 logo off of the monitor, it had knob holes, because it was just a B&W TV set slightly modified (no tuner) for use with the computer.
@johanlaurasia Yes, the Model I came by default with only 7 bits. Actually the 6th bit was derived from bit 7 and bit 5. When installing a lowercase mod, one had to cut the trace for this “deriving” logic and add two bodge wires. Like you said, a piggyback static RAM needed to be installed to add the additional bit. In fact, 2 legs needed to be bend up for the in and output for that one bit. The chip select was done in tandem with all the other bits.
@@jeromethiel4323No, the graphical characters were not killed by it. The lowercase mod just added another bit.
By default only 7 bits were used for the ASCII storage and the 6th bit was derived. The 8th bit (when counting the derived one) did signal if it was a ASCII character (ASCII just needs 7 bits by itself) or if it was a graphics “character”. So, there were 6-bits of graphic characters (2 horizontal pixel and 3 vertical pixel). Adding a lower case mod just replaced the “derived” bit and therefore had no impact on the graphic character sets.
Interestingly, after installing the lowercase mod, you still need an updated character generator. The early ones had lowercase characters, but the Model 1 system ROM didn’t support it and converted characters into a different place in the ASCII table when the derived bit was not there as expected - they never thought they needed it. So, the later character generators actually needed to have a set of character duplicated to make things work, fixing the software issue. See number four here for the character set with the duplications: github.com/RetroStack/Character_Generator_ROMs/tree/main/TRS-80%20Model%201/32-Option_2x256#combinations-and-features
I am by the way the person Adrien is talking about (RetroStack).
7:44 It looks like teclab is still selling that TWS-1000 lab bench. Price by quote 'tho.
as for the whole "physical Vs digital/streaming" I like streaming for the convienance and allows me to view material, but one drawback a lot of people don't mention about the streaming media is that the ISP can go down, robbing you of all access to all of your streaming platforms until your ISP goes back up, and if you don't have anything downloaded and no physical media, you're probably in for a boring time unless you have books stashed away
Ooooh. Back when i worked at the local cinema and we got ads created by a semi large media company in my area I always had to convert their videos to 23,97 fps so it would not be chopping / stuttering on the projection. They used all kind of sources and just made a dcp with the wrong frame rates and the projection server didn’t know what to do with that as it don’t go via a hardware scaler. AI remember I export to individual tiff, convert to individual jpeg2000, color correct to zxy color space and then combine to dcp. How much easier it would be if ppl learned what setting they used when exporting projects/filming content compared to where it was gonna be used. Still. I miss the old days working on those projectors. :) Christie.
29.97 doesn't automatically mean 24 with pulldown applied. 29.97 is 30i with color data added for broadcast which takes up 2 frames every few seconds.
^ Yep. On DVD, it might be 24fps telecine, but if it's not a major studio film, it's just as likely sourced from 60fps or 30fps. And it's always possible that it's some mish-mash of any or all of the above.
This is why deinterlacing DVDs is not a good idea. I mean, at the ripping stage, anyway... Just encode it as interlaced and use whatever filter looks best in your video player.
I'm particularly partial to the "TV simulator" filters that play it back with actual interlaced scanlines, like it would've been on a real CRT. Yes it flickers. Yes it's half as bright. That's because that's what the content really looks like.
The Mega 65 you know is the improved FPGA for the C=65!
If I was younger I would definately build a TRS-80 from scratch. Emulation does me these days though.
much more practical to build a ZX81, or any of the Z80 lineup. Lots of available kits, Also lots of copies made behind the Iron Curtain, and in Latin America. TRS-80 is known as a US only thing, partly because TI had good lawyers. lol
@@squirlmy Yeah, I've built a ZX81 and a Harlequin 128K. I used to have a TRS-80 Model I in the 80's. Fun computer. I had it turning projects on and off using the cassette remote function. LOL. (PRINT CHR$ 9, I think).
I like the joke (or not!) about Boeing.
The TRS-80 model 1 keyboard was pretty bad. A modern replacement with actually GOOD key switches is a godsend for people trying to keep these machines running. I knew a kid in middle school who had to load "KBFIX" from cassette just to use the machine, as the key bounce was so bad. And just typing the load command could take 5-10 minutes, because of the key bounce.
Man, what we used to put up with. ^-^
The fix was later supplied in updated ROM versions. I think Level II version 1.3 had this fixed while previous versions still had this key bounce issue.
@@marcelerz Hmmm.. I wonder which version ROM i had in my model 1 back in the day.
I never had really bad key bounce. I thought it was a better keyboard, but it might have been a ROM fix, i just don't know.
@@jeromethiel4323 If you can remember the initial prompt, it can give you a hint about the version you had. Level 1 only displayed the 'READY' prompt, while all Level 2 versions asked for the memory size with 'MEMORY SIZE' (in versions 1.0-1.2) or 'MEM SIZE' (in version 1.3). After entering or skipping this, it would display 'RADIO SHACK LEVEL II BASIC' written out, or 'R/S L2 BASIC' in the latest 1.3 version. As far as I know, the key bounce issue was fixed in version 1.3, along with the cassette interface software bug that required the XRX board in previous versions-a hardware fix for a software issue.
Another interesting detail is that the text shortening mentioned above was done to save a few bytes on the ROM, allowing all these fixes to be implemented without increasing the ROM size.
@@marcelerz I know it was level two basic. Probably the last option. I think it asked Mem size, but that was so long ago i don't even remember accurately.
Not only keybounce, but also the cassette save and load routines in the early TRS-80 had a mistiming error which meant that even a slightly unstable motor speed in the cassette recorder would cause program loading to fail with a CRC error.
Later revisions re-timed the loading routine to compensate for the error.
The licorice, that Haribo makes, is harmless and not very strong. Children should be able to eat them.
Layout for LodeRunner on the Apple][ is IJKL where I is up, J is left, L is right and K is down. U to dig left and O to dig right. The C64= was the same...
E to enter edit mode, iirc
I miss the old Microsoft Help files for Visual Studio, every class and api call were documented quite well. I always used Conrad's game of life to bench mark things. I had a screaming version in assembler on the TI-99/4A. I usually just hard coded the easiest best known example so I didn't have to code the whole input section of the program, I think it was ...
***
* *
* *
YT mangled my example, it was 3 *'s across followed by /r/n * spc spc * /r/n * spc spc spc *
Also it's Conway's Game of Life, not Conrad's.
Yup, sigh
Never Twice Same Colour
Atari really got frakked by the FCC on the 400 and 800 which is why they were so heavily shielded (and limited to SIO expansion)
Hi Adrian, when you showed the mandelbrot program on te eBadger6502 computer I had to test this on my AGON LIGHT 2 (ez80) computer with bbc basic. I get exactly the same results in 20 seconds 🙂. Perhaps not fair because the ez80 processor runs at 18.432MHz.
Is the ez80 a copy of the old 8080A? Because if so, then it's actually running at 2.048MHz since the clock generator contains a built-in divide-by-nine circuit. The reason for using that frequency is that it's easy to further divide it to obtain the common frequencies used in RS-232 communications.
8-bit show and tell should make a video repatching lode runner.
19:30 what's that punycode filename in there? I'm guessing that's how it resolves sending non-PETSCII characters, but it's not very readable haha.
We want Meatloaf to be able to load anything. Punycode support still needs testing.
Lode Runner: there's a keyboard shortcut to bypass that ANNOYING fade in/out effect. It *might* be "Ctrl-Z"
Pico2 probably could do the full emulation given the faster M33 dual cpu, increased ram and additional PIO.
Do you know if the Meatloaf project features will make it's way to the Coleco Adam version of the Fujinet?
Which Meatloaf feature are you referring to?
29.97 and 59.94 are a result of the NTSC color burst.
How the hell does this work with an esp8266 when a PI1541 needs a rpi3? I must build one NOW...
I started with the ESP8266. That code still works but the current code uses the ESP32 WROVER module (Lolin D32 Pro). PI1541 is a cycle exact drive emulator. This is more like an SD2IEC but with more capabilities.