The System I have currently has a B26 CPU Module with 2 Memory expansions, and a Winchester/Floppy Module to the right of it.
I also just managed to load BTOS II 8.0.2 Real Mode OS onto it.
Ok, looks like the B26 BIOS must store it at a different location than the CP-001 BIOS. The first word of the table should be a count of the items in the table.
Thankfully, the Panel Debugger can read and write to I/O ports directly - pressing either I or O after entering a port address. Had some difficulty getting it to work in MESS, but that could be because the keyboard is only a basic setup, lacking separate Next and Return keys.
Writing to port 0000 will select an X-Bus module, and reading from port 0000 will return the module ID of the selected module. Module 0 is the processor module, module 1 is the next module attached to it, and so on. An NMI is generated when you go too far (don't know how the panel debugger handles that).
Hi Barry,
Hmm,
Doesn't seem to matter what I type I get the same response.
+00:00o=0001 +00:00I 00
No matter what I put into 0000 I get 00 out. Assuming I am reading the Diag manual correctly and using the panel debugger correctly. 8-)
