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Showing posts from March, 2019

Motherboard 386SX-25 ALi M1409A Branded LXP motherboard

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I don't know what brand it is. Probably someone can identify it. Here is few labels: 55.40901.0313250488C PL060520 Let's see what we have here: - CPU NG80386SX-25 from Intel - FPU 3C87SX-25 from IIT - 8 SIMM 30 sockets, right now installed 4 x 1Mb modules I've never saw before branded 386 branded motherboards. And i was surprised that it has so much integrated peripherals: - chipset Acer/ALi M1409A with FDD/IDE controller - perepherial controller Acer M5105 - Oak technology OTI077 VGA video controller - video RAM 4 x Toshiba TC514256AJL-70ms chips, so totally here is 512Kb video memory, also there is present ability to add more additional chips. - 1 parallel port, 2 rs232 ports. - PS/2 key/mouse ports In future posts i'll try to connect old IDE hard drive and boot MS DOS. UPD from 2022 Link to the  BIOS dumps

Compudyne 386 SL/20

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Laptop from the beginning of the 90th, I've got it few days ago. It has: - Intel 80386 SL 20Mhz CPU - 2048 Mb RAM - build in 3.5 1.44Mb floppy drive Ports: - VGA/Serial/Parallel ports - Kycon 3-pin power connector - 2 ports that are looks like PS/2 Also there should be battery and 44-pin IDE 2.5 hard disk, but not in my case.