FAMICOMASTER wrote on 2019-10-23, 03:04:

Now that I have a color monitor, I've been able to identify a few more valid modes for CGA and what I believe to be EGA. […]
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Now that I have a color monitor, I've been able to identify a few more valid modes for CGA and what I believe to be EGA.

Things that cause a "flashing cursor but machine boots" on MDA can sometimes cause a display on a CGA monitor. Just to test, I put an MDA card in and sure enough when it displays a flashing cursor on MDA it boots on the CGA monitor about half the time.

Likewise, a "flashing cursor but machine boots" on CGA can sometimes cause it to display on the MDA monitor instead.

I'm sure there's EGA primary / secondary modes as well, but I don't have an EGA capable monitor right now.

Also, I still don't have a working keyboard. Not even my IBM Model M works on the AT clone anymore. Some keys failed.

Thanks for this thread and that you figured this card out, as I'm currently fighting with this one...

| Type | SW1/1| SW1/2| SW1/3| SW1/4|
| EGA | Off | On | On | Off |