I have found a Trident 8900CL 1MB 16-bit ISA card (PTI-223CL) which has a strange problem.
All of its eight DRAM chips are fine and have been tested. Anyway to fix it? 😕
Note: If I run it with 512/256KB of VRAM, I get only white screen.
Looks like one of the lower address lines is not functioning on VRAM side of things.
T-04YBSC, a new YMF71x based sound card & Official VOGONS thread about it
Newly made 4MB 60ns 30pin SIMMs ~
mida sa loed ? nagunii aru ei saa 😜
Could just be a broken ISA slot, or perhaps a dirty/damaged contact on the ISA connector?
Try inspecting and cleaning the contacts on the card, and see what the card does in other ISA slots?
With a broken ISA slot side of things the video BIOS would be unreadable and the machine would beep with no video card error since BIOS checksum cannot be verified.
T-04YBSC, a new YMF71x based sound card & Official VOGONS thread about it
Newly made 4MB 60ns 30pin SIMMs ~
mida sa loed ? nagunii aru ei saa 😜
I soldered few cold joints but still no luck...
