I've dumped the 1100's BIOS (so we can compare with the Business Partner one now). This version is tandy_1100_v1.00.02_nov89_daft1a5.
View attachment tandy_1100_v1.00.zip
My 1100 is different from the CF150 in that:
* No backlight
* ROM is different, but still a 64K ROM
* No inverter daughter board to power back light (top left of unit, but there's space for one)
I also tried some of the BP150's executables on my 1100. Deskmate copied on a floppy doesn't work, there's likely code in the EPROM somewhere. We might be able to shoehorn this into a Business Partner 150 EPROM. The Business Partner's diag.com says "Machine not compatible" on the 1100, but the Setup150 program does work on the 1100.
View attachment tandy_1100_v1.00.zip
My 1100 is different from the CF150 in that:
* No backlight
* ROM is different, but still a 64K ROM
* No inverter daughter board to power back light (top left of unit, but there's space for one)
I also tried some of the BP150's executables on my 1100. Deskmate copied on a floppy doesn't work, there's likely code in the EPROM somewhere. We might be able to shoehorn this into a Business Partner 150 EPROM. The Business Partner's diag.com says "Machine not compatible" on the 1100, but the Setup150 program does work on the 1100.