Card has returned to life! Thanks, again, to you!

Thanks a lot! I will try.

Hello everyone! I bought Everex EV-628 old VGA card (based on Acumos 320 chip and have 256k RAM). Unfortunaly this card without ROM chips. Can somebody make dump both ROM chips? I didn`t find it in web.

I have old motherboard from Olivetti M250. It`s contains 286 processor, integrated PVGA1A video, integrated FDD and HDD controllers. 20190901_122724.jpg This board looks not bad, but has some damage (i hope not critical) at keyboard connector and additional power connector area. And now i`ve trying …

I`ve checked disk rotation speed with oscilloscope. Drive has 300 rpm. Then i I have used Teledisk from Daves Old Computers site to test drive. Drive has 40 tracks. So, i know its DS DD drive. I saw some data on last tracks at 250 kbps. Now i am trying to find good DD 360 diskette to make head …

Am386DX-40 wrote on 2021-05-14, 20:29: Upload a picture that shows it from behind Done. Added photo to the first post

I dont think so. It looks like have been repaired with connector what they have)

waterbeesje wrote on 2021-02-17, 22:34: Got it :) […] Show full quote Got it 😀 64kB of what looks to me like character rubbish 😜 the program works perfectly. I've also extracted some strings out of the file. I`ve tried this BIOS, but it not works on my board. No beeps, no postcodes. I found AWARD …

Hello everyone! I have old 5.25 FDD without markings. Manufactured in 1990. This FDD looks ok, but not working. I think this drive is DS/DD, because i have only HD diskettes and they not works with this drive. Or heads just need to be adjusted. At first i want to know what i have). The board very …

Bios content text strings "AMI Bios 04/15/1990" and "30-0101-ZZ1336-00101111-041591-SYSL". As i understand, manufacturer ID is "ZZ1336".

This board needs both ROM chips. I've merged "low" and "high" bios and can see some readable text in it.

kalohimal wrote on 2020-06-23, 02:46: Board is this one. Very similar, but no exactly my board. Some jumpers located in another places. And on my board exist jumper JP2, that connect D13 pin of cpu to gnd. D13 in 386 datasheet marked as "NA#". Now i have both original ROM chips. Photo made some …

Why do you need the datasheet? Do you plan to mod the board? I'm going to fix it. My board is not working now. All voltages are good, reset at cpu is "low" , 50 MHz quartz generator works well. This frequency came into chip 88c831, but frequency to cpu jump between 20-40 MHz (i havn't oscillograph, …

No info about this model in Internet. More important for me, to find datasheet or similar motherboard scheme with this chipset. And again, no info about chipset "Solutions" in Internet!

Motherboard with 50 Mhz frequency generator, so i think there must be a 386dx-25 cpu. Also i can`t identify chipset - Solutions 88C831-88C833??

Sorry for necroposting, but i have the same problem as topic starter. I have no bios chip. Maybe somebody could found BIOS file?