- 79
- 9 628
Johan Koelman
Приєднався 18 чер 2014
First time extended graphics on Lambda 8300
The Lambda 8300 is a ZX81-clone but without possibilities for pseudohires or true hires. The Lambda remained a textbased computer .... however....
The recently (may 2024) discovered quaracterdisplaymethod on the ZX81 is also working on a Lambda, making more graphics possible.
MUSHROOMMAN is now also ported to the Lambda 8300.
The recently (may 2024) discovered quaracterdisplaymethod on the ZX81 is also working on a Lambda, making more graphics possible.
MUSHROOMMAN is now also ported to the Lambda 8300.
Переглядів: 19
Відео
Mushroomman ZX81
Переглядів 622 місяці тому
This is a short video of MUSHROOMMAN ZX81. 188 levels upcoming to play. THIS IS THE FIRST GAME TO USE "QUARACTERDISPLAY" A codingtrick recently discovered by me.
Convert TRS80 MC10 games for ZX Spectrum emulator
Переглядів 366 місяців тому
SP-2-MC10 can run TRS80 MC10 games but the data must be converted for the ZX Spectrum. This video shows how to do that.
Spoorovergang Spoorstraat Boxmeer 27m?
Переглядів 2392 роки тому
Voor spoorverdubbeling is minstens 27m overgang nodig. Om deze ruimte te hebben moest het Schilderspad weg. Maar is dat zo? SP Land van Cuijk was altijd kritisch en hier is het bewijs. De werhouder heeft gezegd vanuit het hard 13,5m beide kanten op. Dat is nu gemeten
shogun for the Videopac (wip)
Переглядів 1363 роки тому
First view of my SHOGUN-game for the videopac. Some gameplay, reset and gameplay where the player SHOGUN is attacked (GREEN GRID) and taken by the computer who wins (WHITE GRID) Still fixed board for testing and no sound yet.
Shogun for videopac WIP
Переглядів 733 роки тому
I am coding the boardgame SHOGUN with AI from the source for the ZX81 to the videopac. So far playermovement is possible. Now computer AI must be added.
zpaxman Work in progress
Переглядів 883 роки тому
ZPAXMAN a new pacman in lowres for the ZX81 Movement, not perfect yet
Reactie van de SP Boxmeer op LOF en VDBLO om herindeling 1 jaar uit te stellen
Переглядів 1103 роки тому
Reactie van de SP Boxmeer op LOF en VDBLO om herindeling 1 jaar uit te stellen
SP Boxmeer geeft uitleg over raadsvergadering op Omroep Brabant
Переглядів 303 роки тому
SP Boxmeer geeft uitleg over raadsvergadering op Omroep Brabant
14 september 538 ochtendshow Hennie de Haan cup
Переглядів 4633 роки тому
14 september 538 ochtendshow Hennie de Haan cup
WOW!!!! I missed this!! Superb 1k porting!!!!
Keep an eye on the new games section on sinclairzxworld.com Quite frequently I will place a new game. May 4th is the next update.
I recently received this cart from Videopac Is @Live. It's great addition to my humble collection.
Glad you like it. It was my first (and still only) game I have coded on the Videopac. It was quite a challenge to reduce the stack to less than 16 bytes. The original version had a stack of 100 bytes. This version is also the reason why I recoded the game on the 1K ZX81. At this moment I am working on a new version of my Videopac-emulator on the ZX Spectrum.
Looks great! :)
You can download the game at sinclairzxworld.com
Some impressive stuff there, look forward to them!
The latest version has saving added.
Do you have a website?
Depends what you are looking for. Not a videopac-page, but my games for ZX Spectrum and ZX81 are freely available on sinclairzxworld.com and spectrumcomputing.com
Depends what you are looking for. Not a videopac-page, but my games for ZX Spectrum and ZX81 are freely available on spectrumcomputing.co.uk
spectrumcomputing.co.uk/list?label_id=15569
Yes, I would like to check out your ZX81 stuff.
Really good i’m trying to make a platform game 48k with map. Hope u make new videos about your progress. If u Want check my Chanel i have some tutorials maybe could help u
I think you might be a genius!
Thanks, on this account I make WIP-videos, but all 1K hires games have a video here : ua-cam.com/users/zx81hiresvideos
Looking great so far!
His little leg animation is excellent.
Or convert the original zx81emul into a zx80emul?
Better the new version because the emulation is a lot faster.
Hello... a question... is posible to replace the zx81.rom to do a sp2zx80 emulator?
Great idea, this must be possible.
I add these lines to can save 815 IF k$="s" THEN GO TO 5000 5000 CLS : INPUT "ENTER filename to SAVE ";LINE f$: IF F$<>"" THEN SAVE f$ CODE 49161,PEEK 49172+256*PEEK 39173-16393 to see only the cat I modify 1320 CLS : CAT : INPUT "ENTER filename to LOAD ";LINE f$: IF F$<>"" THEN LOAD f$ CODE 49161
Hi Johan I can transfer now to +3 disk! only I need delete the line 0 to do it. that work with 128k too! the emulator was better than I thought
Great effort! Well done.
I can solve it, but I made a wrong turn. The game is available in the net and soon as apart of 10 games in 1K on tape.
Opus show me an error message "no space in memory". Solution delete any more than one line to Basic list. Microdrive the same. I need use il motto "divide & conquer" or chop & hack a bit the basic list with a basic loader separated from the real basic interface. Wafadrive was a very waf**kdrive nightmarish to transfer. I delete more lines and modify the ramtop but I can put all into a wafadrive. Ice Felix hc2000 it gave me no problems instead. thats all. Thanks for all.
Frank, on sinclairzxworld version 2.00 is available with faster emulator.
Frank Lee @Johan Koelman hi Johan thankyou for that downloaded too and transfered to disks version the same as before
I can transfer succesfully to Disciple, SpeccyDos, and Didaktik disk too! Yes SpeccyDos really!
Thank for your reply! I transfer successfully to timex fdd 3000 dsk. because have not save I add a option s to save files to disk
Hi...Thank you very much for make a new version of your emulator. i like it.
Hope to release an even quicker version soon... I altered the storage of the flags and A-registr and added a mainroutine to all opcodes. This decreases the time needed for each opcode to be emulated.Now bugtesting it.
Happy New Years. The zx81 was my first computer back in the '80's (mail ordered from England for about 150 dollars). Loved that thing and wrote quite a few programs for it (even lost a few when the 16k memory pack shifted while typing). I had the thermal printer and a flight sim for it. It's been gone for several years but it's fun hearing about it again.
thx for helping to keep the ZX81 alive with all your new games that push the hardware to the limits.
Sometimes it is a real struggle to get the displayroutine working or to fit it in 1K. 16K is for losers ;]
It's already 2020 here in New Zealand
Happy New Year to you Dr. Beep thanks for all the games in 2019 (especially the one with my majestic beard in it) and yes... You do drive on the wrong side of the road. 😉
Might be a game in it. GHOSTRIDER! ( is in fact CAR RACE but then harder collision)
Marvellous work as always. How do you do it?
The base is the same as DODGEMS. Here I have 12 backgrounds where a UDG is copied over. I can copy more UDG’s per background.
Hi Johan. Such interesting developments on the ZX81 programming frontier! Thank you for your inspiring coding compositions
If you could add more features in 2k, remember, the Timex Sinclair 1000 had 2k of ram internally. Besides emulation I have a real one with the 32k ZXPand+, which, of course, would give you enough room to make the ultimate version.
Barry, first of all. I still have 470 bytes free (count 30 bytes for a stack). Second. In a 2K/16K version I can add a lot of levels. When I would alter the display I could add other movement of Daleks etc... in fact I could code a whole different game with the same base.
For 16k or more, remember the ram expansion has to be hires compatible. Fortunately my ZXPand+ is already hires compatible, but the stock 16k memory expansion would require a small hardware modification. Emulation is not an issue, of course.
Nice Channel , Hard Work Pays Off ! Dropped A Like ! Sub Me Up ! Ill Ditto ! 👍👍👍
Hi, we made an 8 bit binary to bcd converter using add3 circuits but it's not working properly. The outputs are always logic 1. We are guessing we don't have enough current in the circuit because there are so many IC's and wires and we're only using 5v. What can we do? Pls help. Thank you!
Hello Daisalyn, we used a 5V from USB telephone loader, no problem. I can sent you a scheme in XLS how we connected all ports. You need to ground when switch is open. Like this: 5v ------- switch -----+---- resistant ---- 0v Where the + leads to an input.
For a full 8 bit I needed 9 full adders.
you could always add more power by parallel power from 2 5V supplies.
Thank you for the help!!! I only saw you message now but we have already finished the project. Thank you!
Cannot wait to get my hands on the full release
Cannot wait for your reveiw when it comes out.....
Now you have revealed the magic behind your wizardry I am only slightly less inclined to believe you are of supernatural origin :D
This is only how BREAKOUT works. Each game has its own displaymethod. So still many secrets remain.
Great share & explanation on memory conservation skills Johan- such principles really do make for good planning of a sublime program. Greetings from the Cape of Good Hope
Als de SP niet kan zeiken dan zijn ze niet gelukkig. Ik zit bij het ABP en ik wil dat ze beleggen in datgene wat het meeste opbrengt !
Tomas Bloemink, niet voldoen aan een vordering legitimatie (art 2b Ambstinstructie) en dan vervolgens op schrift dit wel verklaren was uiteindelijk voor de politie ook een uitgemaakte zaak. Beide BOA's hebben dit gedaan. Het OM mag beslissen. BOA kan iet vorderen als deze niet op vordering aantoont een BOA te zijn.
I worked on a scheme to make it 8 bits. After a lot of simulations I can make a 8 bit binary to BCD with just 9 full adders.
The number 4 on the units wasn't shown, but it works.