Source: 6809 SBUG-E Monitor ROM Version 1.5


^A - Alter A-accumulator
^B - Alter B-accumulator
^C - Alter Condition Codes
^D - Alter Direct page Register
^P - Alter Program Counter
^U - Alter User Stack Pointer
^X - Alter X Index Register
^Y - Alter Y Index Register

Baaaa      - Set Breakpoint at aaaa
*D          - Disk Bootstrap (8" ?)
Essss-eeee - Examine Memory
G          - Continue Execution
L          - Load MIKBUG Format Tape
Maaaa      - Memory Alter
Pssss-eeee - Punch MIKBUG Tape
Qssss-eeee - Memory Test
R          - Display Registers
S          - Display Stack
U          - Boot M F-68 Minifloppy
X          - Remove Outstanding Breakpoints

Monitor is 2 kByte, $F800-$FFFF

io_space equ $F000 2K rom

Prompt for CPUXXCMI, 6809 version: cmi-bug 1.3 - 60k



*
*       *** commands ***
* control a   = alter the "a" accumulator
* control b   = alter the "b" accumulator
* control e   = alter the "e" accumulator 6309 cpu only
* control f   = alter the "f" accumulator 6309 cpu only
* control c   = alter the condition code register
* control d   = alter the direct page register
* control p   = alter the program counter
* control u   = alter user stack pointer
* control x   = alter "x" index register
* control y   = alter "y" index register
* b hhhh      = set breakpoint at location $hhhh
* u           = boot a 09flp 5/8 inch floppy
*               1 = Straight cable, 5 = PC cable
* w           = boot a IDE device on CMI09IDE
* e ssss-eeee = examine memory from starting address ssss
*              -to ending address eeee.
* g           = continue execution from breakpoint or swi
* l           = load tape
* m hhhh      = examine and change memory location hhhh
* p ssss-eeee = punch tape, start ssss to end eeee addr.
* q ssss-eeee = test memory from ssss to eeee
* r           = display register contents
* s           = display stack from ssss to $7fc0
* x           = remove all breakpoints