archeocomp
Experienced Member
Hi, I have this 286/1MB RAM, HT12, QUADTEL BIOS mobo (real picture).
Is seems to work. I've only tested it till it complains about CMOS failure. I removed the battery and cleaned the board with IPA to stop further damages.
Stason links:
https://stason.org/TULARC/pc/motherboards/U/UNIDENTIFIED-286-MAT-286-MICRO-AT-BA15D.html
https://stason.org/TULARC/pc/motherboards/U/UNIDENTIFIED-286-MAT-286.html
It has a 20MHz CPU and a 32MHz oscillator at Y2 position. I also have bought a 10MHZ 80287 form aliexpress that I want to use.
https://www.aliexpress.com/item/4001129508800.html
There are two unpopulated positions for Y3 and Y4 oscillators. I believe it runs now at 16MHZ CPU, no NPU. Stason's description of the jumper settings is incomplete and I believe wrong. What oscillators and jumper settings do I need to populate to max out the board to 20MHz CPU and 10MHz NPU performance?
Is seems to work. I've only tested it till it complains about CMOS failure. I removed the battery and cleaned the board with IPA to stop further damages.
Stason links:
https://stason.org/TULARC/pc/motherboards/U/UNIDENTIFIED-286-MAT-286-MICRO-AT-BA15D.html
https://stason.org/TULARC/pc/motherboards/U/UNIDENTIFIED-286-MAT-286.html
It has a 20MHz CPU and a 32MHz oscillator at Y2 position. I also have bought a 10MHZ 80287 form aliexpress that I want to use.
https://www.aliexpress.com/item/4001129508800.html
There are two unpopulated positions for Y3 and Y4 oscillators. I believe it runs now at 16MHZ CPU, no NPU. Stason's description of the jumper settings is incomplete and I believe wrong. What oscillators and jumper settings do I need to populate to max out the board to 20MHz CPU and 10MHz NPU performance?