22 Dec
2005
22 Dec
'05
12:49 a.m.
Do you have details on this resisternetwork ? i.e. is
the CGA
The actual circuit is a bit more complicated than just a resistor
network, because it also does NTSC colour encoding. But you wouldn't need
that for the 5155.
schematic online somewhere ?
I need to add a composite output to a non-IBM CGA card and fit it
inside a IBM5155
I've seen plenty of real IBM CGA cards on E-bay. Is there a good reason
not to use one of those, and get the machine more original?
I don't know of any CGA scheamtics on the web, alas. Anyway, shouldn't
you be designing it yourself rather than taking somebody else's work?
-tony