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    486 AP8546 rev 1.2 - configuration cheat-sheet needed

    Hello, I have acuired this motherboard lately, but it was completely non-configured (someone stole some jumpers), I cannot find anything regarding this mobo, I looked at stanson and on http://www.win3x.org/uh19 but no luck :/ Configuration described on mobo itself is vaque and does not cover...
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    VIP TXM/8 rev. C - turbo button?

    Hello, I have not found manual for this mobo, on stanson none TXM layout matches this one. I assume, from model, that it can run CPU in 8mhz, but I on't know how to switch it to turbo. Maybe someone had this mobo and can point me to right direction (jumper, keystroke comination) or better...
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    Socket 7, DIMM only, AT only, without AGP motherboard?

    I'm looking for motherboard from my yuth, it was simple AT mobo with Socket 7, but with DIMM slots only (without simm), AT only (!), without AGP (!) motherboard? There are planty boards AT/ATX and Super Socket 7, but I have not yet found AT only mobo that has only (one or two, don't remember)...
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    Mv035 rev C (486, vlb) - looking for BIOS

    Hello, i have found rev D and rev F bios files but not for rev C, VLB is not working. I have brought back to life this board by soldering voltage stabiliser and using rev D bios (there were no bios chip nor stabiliser on board when i bought it) but vlb is not working and i bet it's issue With...
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    Identifying video signal by oscilloscope diagram

    Hello I have an issue with identyfying video signal on Megatel SBC, documentattion for this board is non-existant, so I used for newer board datasheet, but it does not match fully (lightly speaking...). I have done some tests, and on (theoreticall) h-sync, v-sync and green signal recieved this...
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    Monochrome MDA/CGA monitor - no HV, cut video cable, no pinout

    Hello, I stumbled onto old monochrome MDA/CGA monitor. It's basically "noname", production date was 1987, model 14HP22. Issues that i have: 1) Someone cut the video signal cable, I'm not experienced at all, to find out what is what (besides ground ;) ) 2) After turning on, there is no HV, is it...
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    Looking for someone from Bulgaria willing to source parts for Pravetz 16

    Hello, I'm looking for someone from Bulgaria, that is willing to help me buy some Pravetz 16 (8088 Bulgarian clone) parts. I have found some on ebay and bought (motherboard, ram card and computer case) but pricing on ebay "is not right" for all other parts that I need (50$ compared to 10$ on...
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    Acer 386sx/20N - looking for bios

    Hello, I have a favor to ask, i'm looking for a BIOS for that computer, maybe someone have one in their stash and could provide me with it? This computer BIOS consists of two separate chips (odd and even bits), so if you are able to dump them separately I'll be more than happy. Regards,
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    PC104(?) Megatel 8088 ( NEC V40 ) Board - any info?

    Hello, I have stumbled today on this board, I have found some information, but not many about this particular device. I belive it is PC104 board, but it's connector have 3 rows, and also it has additional two row 64 header (probably SCSI connector as i can guess from specs). Maybe someone could...
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    HT12 286 - only 704kb of ram seen?

    Hello, I have an huge RAM issue with my 286 PC, it have HT12 mobo with 16mhz 286 cpu. It only sees 704kb of RAM, 640kb of normal and 64kb of extended. I have removed ram from mobo, placed some simm ram, it has changed nothing, when placed half of memory (half of simm modules, or half of mobo...
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    5150 - PII-144 card and RTC - software?

    Hello, I have IO card - PII-144 https://stason.org/TULARC/pc/io-cards/C-D/DTK-COMPUTER-INC-Multi-I-O-PII-144.html It has built in RTC clock, but I need software to pull time from built in RTC to system, without it, my DOS 3.3 keeps asking me for time/date every time. Maybe someone can provide...
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