The data sheet says under "Input transition detection" that "the first rising clock transition from power-down state only acts as a wake up signal and will NOT clock the data input through to the output". So if the time between your input changes is > tas (60-150nS) it will go to sleep! That would explain why you are losing pulses, weird device......
Can you tell us where you got those 8 digit 5x7? Matrix displays on the other half of your proto board. I’ve been looking for something like that for ages. Is it LED or VFD ?
Thanks for all those links. It’s a pity they don’t make these nice little display cheaply available these days. The modern day equivalent is a big ugly 8x8 matrix or similar or just a big 7 set LED array. The second hand price on eBay puts them out of my budget.
I know I'm necro-replying, but if you put a 15K resistor to GND on the CLK pin, it will work. Problem you had with this was the clock was open drain, and the Quiescent current of the inputs is 100ua, so it was NEVER REACHING Low state :)
You might try programming it with the ELM programmer. I’ve had hit or miss luck with the minipro and PLDs. But I’ve had great luck with the ELM. Just remember, do not insert the part before the software tells you to do so.
The data sheet says under "Input transition detection" that "the first rising clock transition from power-down state only acts as a wake up signal and will NOT clock the data input through to the output". So if the time between your input changes is > tas (60-150nS) it will go to sleep! That would explain why you are losing pulses, weird device......
yes that would explain it. weird indeed
Hi. What kind of device i need to be able to read the programming inside this chip? I need to extract the programming and copy it to another chip
I don't know of anyway
There is no read function in those chips it is one way only.
@@IMSAIGuy That is bad news for me:/ Thank you for the fast reply :)
I can't find GAL16V8Z using Xgpro TL866II Plus i need to read and write from it any tips ???
Can you tell us where you got those 8 digit 5x7? Matrix displays on the other half of your proto board. I’ve been looking for something like that for ages. Is it LED or VFD ?
ua-cam.com/video/m_G6KPlY7BY/v-deo.html
ua-cam.com/video/BJCGq0KZGWo/v-deo.html
ua-cam.com/video/Ef-6dUhjl90/v-deo.html
ua-cam.com/video/Vm3ODFay940/v-deo.html
Thanks for all those links. It’s a pity they don’t make these nice little display cheaply available these days. The modern day equivalent is a big ugly 8x8 matrix or similar or just a big 7 set LED array. The second hand price on eBay puts them out of my budget.
@@markcummings150 keep looking, I have found the 8 digit ones for $3. They were very expensive back in the day when new also.
Thanks for videos on the GAL devices. Which project are you using the 16V8 on?
It was used on the 8085 SBC
You can still get ATF16V8 and ATF22V10 at Farnell/Element14
can you please tell us where you get the 8 led indicator strip ?
I made them. They were part of my TTL CPU project. They are very handy. You can find smaller ones 5 or 6 leds on ebay.
Whatever happened to the TTL CPU project ?
sorry I got bored with it. A problem of mine
I know I'm necro-replying, but if you put a 15K resistor to GND on the CLK pin, it will work. Problem you had with this was the clock was open drain, and the Quiescent current of the inputs is 100ua, so it was NEVER REACHING Low state :)
Don't think so, clock comes from pin 3 of 555, not clock is from a TTL inverter chip. no open drains. it does not use pin 7 of the 555
howto program palce16v8l ? or peel ?
I don't know. the programmer I use can do Lattice just fine, so I stay with that.
You might try programming it with the ELM programmer. I’ve had hit or miss luck with the minipro and PLDs. But I’ve had great luck with the ELM. Just remember, do not insert the part before the software tells you to do so.
where can I find info on ELM prog?