First post, by jade_angel
I've been trying to get just the right video card for one of the machines I've been monkeying with over the last few weeks, and I've hit into something weird. The machine is a 486, with a Micronics JX30GC VLB/ISA motherboard. I have four cards I've been trying to get working with it - a Cirrus GD5428 1MB, a Tseng ET4000/W32 1MB and two GD5429s, both with 2MB. The board layout of all three Cirrus cards is exactly identical, except that the upgrade memory sockets on the 5429s are populated, while they're not on the 5428 (the sockets are there, but no chips are in them). But here's the thing: with either of the 5429s, I get no output whatsoever. With either of the others, the box starts right up, no questions asked, and runs like stink.
Unfortunately, the ET4000 doesn't have any memory upgrade sockets. I was hoping to be able to use one of the 5429s to get slightly better performance than the 5428 and still be able to run at 800x600x24 under OS/2 and Windows, but apparently the 5429s are either both borken, or else they just won't chooch in this board. Anyone ever seen that kind of thing, or know of a workaround? Or am I better off just pulling the memory upgrades out of one of the 5429s, sticking them in the 5428, and going with that?
Full system specs:
64MB (4x16MB) 60ns parity FPM RAM
Intel 486DX4/100 CPU @3x33MHz
Bus running at 33MHz
Onboard VLB IO controller with floppy, parallel, dual serial, dual EIDE
Video cards described above.
4GB CF card in ATA-CF adapter (Pri master)
40x24x20 ATA CD-RW (Sec master)
SMC 8416 10BaseT Ethernet NIC
ESS AudioDrive 1868F ISA sound card
EDIT: pic of a card identical to mine, all three look like this with the slight difference that the chip on the far left is not socketed on the 5428, and of course, the main graphics chip itself.
Main Box: Ryzen-TR 1900X | GTX 1050/Radeon RX 580
98/2000 Box: PIII/766 |Quadro4 380 XGL