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3. Mon12 will not trace into interrupts. To trace an interrupt service set a breakpoint in the
service routine and then trace.
4. Mon12 trace is limited to expecting the next linear address. Program counter modification,
branches, calls, or subroutines will not trace correctly.
5. Monitor start-up procedure:
A)
B)
C)
Determine if Auto Start is enabled and execute code at address $8000 .
Set Stack, Initialize memory map, and SCI0 port and send prompt.
Receive first character from Console port and execute monitor if ASCII text / command;
else start utility mode for programming services.
Mon12 Monitor Commands
BF <StartAddress> <EndAddress> [<data>]
BR [<Address>]
CALL [<Address>]
GO [<Address>]
HELP
LOAD [P]
MD <StartAddress> [<EndAddress>]
MM <Address>
MW <Address>
MOVE <StartAddress> <EndAddress> <DestAd-
dress>
RD
OFFSET – [arg]
Proceed
RM
STOPAT <Address>
T [<count>]
Block Fill memory range with data
Set/Display user breakpoints
Call user subroutine at <Address>
Begin/continue execution of user code
Display the Mon12 command summary
Load S-Records into memory, P = Paged S2
Memory Display Bytes
Modify Memory Bytes (8 bit values)
Modify memory Words (16 bit values)
Move a block of memory
Display all CPU registers
Offset for download
Continue program execution
Modify CPU Register Contents
Trace until address
Trace <count> instructions
Items in Italics are not implemented at this time.
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