Reply 52840 of 52976, by Ensign Nemo
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acl wrote on 2024-05-07, 07:30:If you're able to swap the ROM, it is still a Z80 + ROM + a serial interface. Swapping the ROM for a custom made one should be p […]
carlitosbala wrote on 2024-05-07, 06:52:acl wrote on 2024-05-06, 12:13:I found a datasheet describing a more recent but similar card. (https://partners.trendcontrols.com/trendprodu … 1-uk0yr0608.pdf)
Page 2 seems to explain that the card is indeed managed through serial and is only using the ISA bus for power. (this more recent card is PCI based)Screenshot from 2024-05-06 14-12-54.png
Interesting. It seems the card is not useful to me in the slightest (except to eventually harvest some components), but still, interesting to get a glance of hardware and systems I'd otherwise not know even exists.
If you're able to swap the ROM, it is still a Z80 + ROM + a serial interface.
Swapping the ROM for a custom made one should be possible.You probably won't be able to run CP/M but there might be some possible usage (even more if you can slightly modify the card adding some IO bedside the RS232)
A Z80 is a really simple CPU to deal with. You can do a lot of thing by adding a bunch of 7400 series IC and / or shift registers.Ideas :
- Adding IO pins to the Z80 and wiring them to the Motherboard. You could programmatically control some features (Jumper settings, turbo)
- Emulating any serial device (modem, mouse, sound ?)
- Adapt some of the RC2014 module to the card
The knowhow that a lot of people have here really impresses me. Someone buys a random card without knowing what it is, and you guys have ideas on how to back it!