First post, by mihai
Hi
I have acquired an old 8bit ISA Eagle II card (Cirrus Logic GD-510/ 520) with 256k RAM. I like the card because it can output EGA on VGA port and is more compatible with older games compared to the PCI cards I have (S3 / Matrox / etc). For example, I can play Cruise for a Corpse EGA without any flickering.
I am using the card on a 440BX board, with a P2, underclocked at 133 MHz. The ISA card works great in DOS.
My problem is Windows 95 / 98 - the Windows installer works. During the install process, the image is 640x480, 16 colors and win9x detects a "Standard VGA Adapter"; the ISA card and the monitor are both in VGA mode. using the dip-switches from the back.
However, once windows 9x boots the monitor shuts down, as the ISA card attempts to output a 28Hz signal for the horizontal frequency - which is below what the VGA monitor can do (a dell p1130). The same happens in safe mode.
Any idea if this card can be 'pushed' to work in Windows 9x? All I need is 640x480 x 16 colors.
Many thanks for any idea.