Hello everyone, apologies for the bad English. I have a couple of these cards. I have never seen anything like this before. I have had no success in identifying them on the Internet, if anyone has any information I would be grateful.
Looks like some kind of data acquisition card.
It's basically a complete Z-80 system with Z-80 CPU, 32kB SRAM, Z-80 CTC timer and Z-80 serial I/O chip.
The latter has been used in modem systems, but given the various ports, I'd say it's more likely to be hooked up to sensors of some kind. Given the number of bodges (look at all the caps soldered over those anonymized DIP ICs) it looks like a very limited production run device.
dionb wrote on 2023-01-28, 16:02:The latter has been used in modem systems, but given the various ports, I'd say it's more likely to be hooked up to sensors of some kind. Given the number of bodges (look at all the caps soldered over those anonymized DIP ICs) it looks like a very limited production run device.
So is it not some kind of isdn bridge?
Interesting card for sure. are those rj45 or rj11 connectors? and mac-style serial dins?
either way, they could in theory be used as a serial port to another system - and the zilogs might indicate that it's a development interface for many of the once-popular z80 based computer/gaming/arcade boards.
I manage a pot-pourri of video matter...
