Thanks, John for pointing everyone to the GAL article on S100computers.com. That is quite nice. I am glad to see that you endorse the Wellon VP-290. I wish I had seen this before I wasted my $$ on the MiniPro 866A.
I, too, am now basing designs on the GALs and I intend to “move up the ladder” so to say with the more complex CPLDs. I have acquired some Atmel samples of the ATF1502, which has 32 macrocells. This might take the place of 3 or 4 22V10’s. It might be a solution to the density of your 486 board. Alas, not available in DIP. BTW – I have been writing in CUPL instead of PALASM and I have not run into any I/O polarity issues. It just seems to work. WinCUPL (free from Atmel) includes a nice interactive simulator that precludes the need to wire up the GAL on a breadboard with switches and LEDs to prove it works. I have used the simulator for the first three GALs on the board I am currently designing (revising, to be exact) and every one of them were correct when they were burned and popped into the breadboard. This is after the simulator showed several errors that I corrected prior to burning the chip. The only issue I have run into is the simulator is rather quirky to get it to run on a new design. But after it gets going properly, it works great. Atmel has been good with tech support. Bob Bell From: [email protected] [mailto:[email protected]] On Behalf Of John Monahan Sent: Monday, April 27, 2015 8:31 PM To: [email protected] Subject: RE: [N8VEM-S100:6843] Re: Simple GAL programmer for GAL22V10 Could I “advise” S100 people to lookout/get GAL programmers. I’m a total convert to these chips by now. All future boards I will do will probably use them. Including the future IDE-V3 and a 16MB static RAM board using 4 SMD chips. The slowly evolving 80486 S100 prototype board has 5 on board and even that is a tight board fit with over 1000 traces! The Wellon VP290 seems to work with most chips. However for reasons I don’t understand it requires the Erase, Program Verify & Secure options to be checked for LATTICE 22V10 programming. Also using a different manufacture designation for these LATTICE GALS will burn them out. See her for more details:- http://s100computers.com/My%20System%20Pages/ISA%20to%20S100%20Bus/Intro%20To%20GALs.htm John From: [email protected] [mailto:[email protected]] On Behalf Of Bob Bell Sent: Monday, April 27, 2015 2:46 PM To: [email protected] Subject: RE: [N8VEM-S100:6839] Re: Simple GAL programmer for GAL22V10 I just bought a Wellon VP-290 to program GALs, since I am done trying to discover how to ask AutoElectric to add support for the Atmel 22V10 GALs on their Minipro TL866A. If I had a way to send it back for a refund, I would. I has successfully programmed any Lattice 22V10, but Atmel is easier to get. The Wellon has Atmel 22V10 in their support list. Interestingly, the Wellon VP-290 looks every bit like the Needham EMP-290. I read somewhere that Needham may have sold their programmers off to a Chinese company. Anyone know the details? Bob Bell From: [email protected] [mailto:[email protected]] On Behalf Of Gary Kaufman Sent: Monday, April 27, 2015 2:14 PM To: [email protected] Subject: [N8VEM-S100:6835] Re: Simple GAL programmer for GAL22V10 Interestingly I ran into the same problem this past weekend... Fortunately my Needham's EMP-11 programs GAL22V10B's just fine. If anyone in the USA needs GAL's programmed - I'd be happy to program them at no cost (just cover the return postage). - Gary -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
