A3660 CPLD's: to socket or not to socket? - Page 2

dalek · 26 March 2019, 01:20

Interesting - must be how John's programmer reads back the file. jedrevenge works on the one from amigawiki - which matches more or less the haynie one you have.

a3640_u401_amigawiki.eqn.txt

Mathesar · 27 March 2019, 20:57

Quote:

Originally Posted by dalek

Interesting - must be how John's programmer reads back the file. jedrevenge works on the one from amigawiki - which matches more or less the haynie one you have.
Attachment 62569

Most likely that damn TL866 again

.
Today I have soldered the Haynie version in. I am going to test this weekend. Fingers crossed

Mathesar · 28 March 2019, 20:05

My A3660 works!
Thank you John for your great work!

Building this card was like a big adventure. From sourcing all the parts (some from forum members, thank you as well

) to reverse compiling GAL chips.

I am using this card in my trusty old rev. 9/03 A3000. The card is build using Atmel/Microchip 'C' type GAL chips, the 74F175 instead of the 74F1803 and the newer DS1100Z delay line. I am using a MC68LC060 that seems to run very cool.

At first the computer wouldn't boot with the A3660, giving me a yellow screen and a flashing power led. My delayline was set to 10ns. However, when I changed the delayline to 5ns it did boot. Timing is critical it seems. When I have the time I can do some measurements on the clock lines using a fast scope.

So far, the system boots from floppy and runs games, demos and such fine. It crashes on the startup-sequence on my harddisk (standard OS3.9 with Cybergraphx V4). I still need to install the correct 040/060 libs for an FPU-less 060. But that is (hopefully) the easy part

Here come the dirty pics, and, once again: cheers to you John for your great work!

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dalek · 29 March 2019, 00:45

Nice work!

I did some reading and it looks like the TL866 won't program Atmel GALs, only Lattice GALs. The reason is explained here: http://www.bhabbott.net.nz/atfblast.html

dalek · 19 March 2020, 01:47

Just an update, I was able to program ATMEL ATF16V8B's GALs with my TL866 so long as I select the 'Encrypt Chip' option. Apparently that sets up the correct handshake before programming.

Mathesar · 19 March 2020, 10:53

Quote:

Originally Posted by dalek

Just an update, I was able to program ATMEL ATF16V8B's GALs with my TL866 so long as I select the 'Encrypt Chip' option. Apparently that sets up the correct handshake before programming.

That is perfect! The Atmel/Microchip GALs are the only ones that are still available and be able to program them with the TL866 is very good news indeed!

PS: are you building an A3660 as well? Still love mine!

dalek · 19 March 2020, 12:05

Quote:

Originally Posted by Mathesar

PS: are you building an A3660 as well? Still love mine!

Nah, I was lucky enough to get a 3640 a couple of years before the hype and have an 060 adapter.

I might build either Matze's accelerator for the 4000 (if/when it's ready) or else fingers crossed for one day a TF40something

AJCopland · 19 March 2020, 18:22

Quote:

Originally Posted by dalek

Matze's accelerator for the 4000

What is this card that people keep mentioning?
Googling produces nothing.

dalek · 19 March 2020, 21:24

Probably getting a bit off topic but there is a thread over on a1k with the details.

28 March 2019, 20:05	#23
Mathesar Registered User Join Date: Aug 2014 Location: Netherlands Posts: 695	It works My A3660 works! Thank you John for your great work! Building this card was like a big adventure. From sourcing all the parts (some from forum members, thank you as well ) to reverse compiling GAL chips. I am using this card in my trusty old rev. 9/03 A3000. The card is build using Atmel/Microchip 'C' type GAL chips, the 74F175 instead of the 74F1803 and the newer DS1100Z delay line. I am using a MC68LC060 that seems to run very cool. At first the computer wouldn't boot with the A3660, giving me a yellow screen and a flashing power led. My delayline was set to 10ns. However, when I changed the delayline to 5ns it did boot. Timing is critical it seems. When I have the time I can do some measurements on the clock lines using a fast scope. So far, the system boots from floppy and runs games, demos and such fine. It crashes on the startup-sequence on my harddisk (standard OS3.9 with Cybergraphx V4). I still need to install the correct 040/060 libs for an FPU-less 060. But that is (hopefully) the easy part Here come the dirty pics, and, once again: cheers to you John for your great work!

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26 March 2019, 01:20	#21
dalek Registered User Join Date: Nov 2014 Location: NSW/Australia Posts: 462	Interesting - must be how John's programmer reads back the file. jedrevenge works on the one from amigawiki - which matches more or less the haynie one you have. a3640_u401_amigawiki.eqn.txt

29 March 2019, 00:45	#24
dalek Registered User Join Date: Nov 2014 Location: NSW/Australia Posts: 462	Nice work! I did some reading and it looks like the TL866 won't program Atmel GALs, only Lattice GALs. The reason is explained here: http://www.bhabbott.net.nz/atfblast.html

19 March 2020, 01:47	#25
dalek Registered User Join Date: Nov 2014 Location: NSW/Australia Posts: 462	Just an update, I was able to program ATMEL ATF16V8B's GALs with my TL866 so long as I select the 'Encrypt Chip' option. Apparently that sets up the correct handshake before programming.

19 March 2020, 21:24	#29
dalek Registered User Join Date: Nov 2014 Location: NSW/Australia Posts: 462	Probably getting a bit off topic but there is a thread over on a1k with the details.

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