Tube❄TimeMar 21
time to upgrade the video card in my Sun SPARCstation 1+.
Show threadTube❄TimeMar 21
the new card is a TurboGX so i can get color graphics.
Show threadTube❄TimeMar 21
looks like the people who designed it left their names on the circuit board. i guess some of them are crossed out because they left the team?
Show threadTube❄TimeMar 21
aaand i get a black screen. that's odd.
Show threadTube❄TimeMar 21
hmm, maybe my adapter board (configured for H/V sync) will not work with this card that puts out CSYNC only.
Show threadTube❄TimeMar 21
no CSYNC comes out. checked it with a scope. OK, maybe the monitor sense pins being floating is a problem? i think it should still come up even with nothing (1152x900 66Hz).
Show threadTube❄TimeMar 21
that wasn't it either. no change.
Show threadTube❄TimeMar 21
quick sanity check with the old video card, and that still works OK.
Show threadTube❄TimeMar 21
could be an old PROM version. the previous screen shows ROM Rev 1.1, but here it looks like I need PROM 2.0 or higher.
Show threadOwen Mehegan
@tubetime I remember adding a GX framebuffer to my SS20, and it did need a PROM upgrade. The eBay seller who sold me the FB included a new PROM chip.
Mar 21 at 12:53amWeb