Reply 36620 of 52879, by kdr
Munx wrote on 2020-10-25, 18:10:I thought I got myself an 8bit ISA serial card for 1Euro. But then I realized that its a female connector. Too few pins for VGA.
Did I buy a CGA/Monochrome video card?
Can I use it on a VGA monitor with a passive adapter?
What is the text on the main chip? I can't quite make it out from the photo... is it EICIO or BIGIO or something else?
It probably isn't an MDA, because it lacks the 16.000Mhz or 16.257Mhz oscillator. But you can confirm whether it's an MDA by trying to write a value to the CRTC cursor address register:
C:\>DEBUG
-I3BA
F0
-O3B4 0E
-O3B5 55
-I3B5
55
-O3B5 AA
-I3B5
AA
-
If you don't see "55" and "AA", it's not an MDA.