First post, by Predator99
This week I got this nice SUNTAC 80286 Mainboard. I think have tried everything I can do but it doesnt work 🙁
- keyboard LEDs are flashing on power-up
- nothing on screen
- no beep-code
I already have
- tried different VGAs
- re-seated all chips in sockets
- tried different jumper settings
- populated the SIPPs
- checked the BIOS EEPROM. Put them in the BOOT-ROM socket of a NE2000 card and read the content - see attached. Seems to be OK.
I was not able to find the documentation of this board anywhere. Especially the SIPP option does not seem to be very common.
This one here is very similar, but with different memory configuration:
http://toastytech.com/manuals/Magitronic%20B233%20Manual.pdf
Memory banks 0 and 1 seem to be completely populated, so this should be OK. The 8x"KM44C256AP" are 1024 kb. This option is not even mentioned in the manual above. I do do not have other chips available to test. I have received the board without the SIPPs shown on the pictures, these were added by myself.
The Power/Turbo LEDs are also not working. The LED is only flashing when connected to the two left Speaker-PINs (+5V / GND).
Does anybody have a documentation for such board or any idea what else I can try? I dont know the manufacurer, the BIOS Chips are labeled with "TCL" and on the back there is noted "TMF M21 94V-0 8939".
Any idea is welcome 😀
Many thanks!