Reply 40 of 94, by retro games 100
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- l33t
I just tested this Cirrus Logic CL-GD510/520 based card again. This time, I altered the dip-switches on the back, so that dip-switch #6 was set to Off. This means that the card is in CGA mode. I've never tried this before with an old video card, so it was really great to see the monitor display its text and graphics in an "old n crusty" chunky CGA resolution. I was using an LCD, and it looked fine. I tried some random "CGA Comp" tests, and they all worked. Previously, with the card in its default VGA mode, some of these tests failed.
However, I tried running several games, and when the game is supposed to start, the monitor unexpectedly and abruptly "aborts" and then switches over to the image displayed from my other computer. Is this because the CGA game's signal is "out of range"? There is no error message to tell me this, or what the problem is. I wonder if there is a DOS TSR that I need to run, to set the refresh rate to 60Hz? Or perhaps I just need to run these games on an old CRT based monitor, and not an LCD?
Edit:
Or, perhaps I need to alter the dip-switches that relate to the monitor type. The choices are:
MONITOR TYPE
Type SW1/1 SW1/2 SW1/3 SW1/4
PS/2 Off On On Off
Monochrome On On On On
Color Off On On On
Enhanced color On Off On On
TTL multi-frequency Off Off On On
Analog multi-frequency Off On On Off
Edit 2: Correction. Sorry, I have made a mistake. Earlier, I put the "TTL setting" above in a dark blue colour. I meant to put the Analog multi-frequency in dark blue. End Edit 2.
Currently, the card is set to use Analog multi-frequency, which is highlighted above in dark blue. Perhaps I need to alter this setting, and change it to something else, for example the Color setting?