some guidance - Githubissues

rickyelqasem commented 6 months ago

few questions:

I can see the 2 pld files for the GAL chips but what is SFD700_2.PLD.MZ700 for?
what are the CPLD files for? there doesn't seem to be a CPLD chip
want to build these for mz700 m in terms of roms I can I just flash SFD700.rom and all will work?

thanks for your efforts.

rickyelqasem commented 6 months ago

and how did you program the 26CV12 chip... very difficult to find info on this.. I have a TL866-2 plus... noting on 26CV12

i have noticed that in 1.2 you are moving away from the GAL chips to CPLD .. will you document this?

pdsmart commented 6 months ago

Hi, my appologies, I havent had time to look at my projects for 6 months now due to a very demanding contract.

The early versions of this card uses the GAL's but then the latest version I switched to a CPLD. The earlier versions had issues due to lack of logic in the GAL, hence switching. The CPLD is the same cost as the GAL's.

The 26CV12 I programmed via a made up interface and reconfig of the TL866-II software.

The latest version, v1.2 which uses the CPLD is fully working as a disk controller and most of the enhanced rom functions work too, just a few minor bugs and additional commands I want to add havent yet been addressed.

If you download the v1.2 kicad schematics and PCB (there is my working PCB board in the releases) and for the CPLD, download Altera (Intel) Quartus II v13.0 to assemble and program the CPLD.

Hopefully I will get time in the next few months to start finishing the SFD700 and the tranzputerPico (a plug in Z80 replacement based on the ESP32 chip)! Everything though, apart from documentation is stored in the repo as to my latest stage.

pdsmart / SFD700

some guidance #2