Last Updated or created 2023-05-31
The board seems to be a X Golden Board, except for the missing logo on the motherboard.
Downloaded pcxtbios and compiled the eproms native in linux. So i don´t have to use dosbox any more.
https://github.com/virtualxt/pcxtbios
cd pcxtbios edit make_linux.sh if needed ./make_linux.sh and you should end up with eproms/27512/basicfc.rom eproms/27512/basicf8.rom eproms/27512/basicf6.rom eproms/27512/pcxtbios.rom eproms/27512/basicfa.rom eproms/27128/basicfc.rom eproms/27128/basicf8.rom eproms/27128/basicf6.rom eproms/27128/pcxtbios.rom eproms/27128/basicfa.rom eproms/27256/basicfc.rom eproms/27256/basicf8.rom eproms/27256/basicf6.rom eproms/27256/pcxtbios.rom eproms/27256/basicfa.rom eproms/ibmxt/u18.rom eproms/ibmxt/u19.rom eproms/2764/basicfc.rom eproms/2764/basicf8.rom eproms/2764/basicf6.rom eproms/2764/pcxtbios.rom eproms/2764/basicfa.rom
I didn’t have enough 28C64, but the 28C256 has the same pinout. It just lacks A14 and A13
So I flashed the compiled ROMs for basic to different Eeproms
minipro -w ./2764/basicfc.rom -p AT28C64 minipro -w ./2764/basicf6.rom -p AT28C64 minipro -w ./27256/basicfa.rom -p AT28C256 minipro -w ./27256/basicf8.rom -p AT28C256
These roms need to be placed in sockets ROM6,5,4,3
| ROM7 (BIOS) | fe00:0-ffff:ffff |
| ROM6 Basic | fc00:0000-fdff:ffff |
| ROM5 Basic | fa00:0000-fbff:ffff |
| ROM4 Basic | f800:0000-f9ff:ffff |
| ROM3 Basic | f600:0000-f7ff:ffff |
Machine Code monitor/editor
I tried to find a machine code monitor for 8088 rom, but did not have any luck there.
I tried mumon88, but that didn´t work.