I post a photo of the latest card I got:
It's just a regular MDA/parallel clone... except for the bus connector. It should be 8-bit ISA, but it has the 16-bit ISA extension and a 2nd very strange (and unknown for me) extension.
More details about the card:
- External connectors are DB-9 and DB-25 (both female).
- Looks like MDA/Parallel or Hercules/Parallel
- Newest chip is dated 8731
- Chips include a 6845 (CTRC), two TMM2016 (RAM), and a stickered chip with UV window (EPROM or micro-controller).
- Smaller ones are just 74LS and PALs (the stickered ones).
- According to datasheet each RAM chip is 2 Kbytes, so not Hercules/Parallel, but MDA/Parallel.
What do you think about it? Did you know about the existance of such connector?
Note: I got replies in other forums claiming it's a VESA Local Bus connector. IT IS NOT. The VLB extension has narrow fingers, the same width than PCI connector fingers. This card 2nd extension fingers are the same width than the 8-bit and 16-bit ISA connector fingers.
Note 2: The big stickered chip turned out to be an 4 Kbyte EPROM with characters definitions (nothing else, no BIOS or such).
It's just a regular MDA/parallel clone... except for the bus connector. It should be 8-bit ISA, but it has the 16-bit ISA extension and a 2nd very strange (and unknown for me) extension.
More details about the card:
- External connectors are DB-9 and DB-25 (both female).
- Looks like MDA/Parallel or Hercules/Parallel
- Newest chip is dated 8731
- Chips include a 6845 (CTRC), two TMM2016 (RAM), and a stickered chip with UV window (EPROM or micro-controller).
- Smaller ones are just 74LS and PALs (the stickered ones).
- According to datasheet each RAM chip is 2 Kbytes, so not Hercules/Parallel, but MDA/Parallel.
What do you think about it? Did you know about the existance of such connector?
Note: I got replies in other forums claiming it's a VESA Local Bus connector. IT IS NOT. The VLB extension has narrow fingers, the same width than PCI connector fingers. This card 2nd extension fingers are the same width than the 8-bit and 16-bit ISA connector fingers.
Note 2: The big stickered chip turned out to be an 4 Kbyte EPROM with characters definitions (nothing else, no BIOS or such).
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