First post, by Predator99
This was my challenge for today. I liked to get the IBM Basic ROM to run in a PC clone. Was not that easy because the IBM ROM is not designed to run stand alone as an option ROM.
Therefore I added a "loader" to add the option ROM "55 AA" header and to connect the INT 18 to it. Very helpful to get this running were Ya-Gui Wei's tools here
http://www.cnd.org/HYPLAN/yawei/freesoft.html
I only tested in a 286 so far and seems to run fine. If no disk is connected the PC loads the IBM Basic 😀
The image is currently 64 kb. Will be easy to shrink to 34 kb or so. Less than 32 kb is difficult as the original ROM has this size and there seems to be no room left to add any code...
Also compatible with XT-IDE - press F8.
I included the full image and the HI/LO files. Put the the ROM in an empty socket on the Mainboard or a network card like you do with XT-IDE. Runs also in a single EPROM together with XT-IDE.
Happy if you like and test it 😉