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backtrace
bt
Print JSR call chain (most recent call first). Stack offset relative to SP+1 is printed in parentheses. This is a best guess only.
cpuhistory [<count>]
chis [<count>]
Show <count> last executed commands. (disabled by default; configure with –enable-cpuhistory to enable)
dump "<filename>"
Write a snapshot of the machine into the file specified. This snapshot is compatible with a snapshot written out by the UI. Note: No ROM images are included into the dump.
goto <address>
g <address>
Change the PC to address and continue execution.
io [<address>]
Display i/o registers. Invoking without an address shows a dump of the entire io range, if an address is given then details for the chip at the respective (base-)address are displayed (if available).
next [<count>]
n [<count>]
Advance to the next instruction. Subroutines are treated as a single instruction.
registers [<reg_name> = <number> [, <reg_name> = <number>]*]
r [<reg_name> = <number> [, <reg_name> = <number>]*]
Assign respective registers (use FL for status flags). With no parameters, display register values.
reset [<type>]
Reset the machine or drive.
type
: 0 = soft, 1 = hard, 8-11 = drive.
return
ret
Continues execution and returns to the monitor just after the next RTS or RTI is executed.
step [<count>]
z [<count>]
Single step through instructions. An optional count allows stepping more than a single instruction at a time.
stopwatch [reset]
Print the CPU cycle counter of the current device. ’reset’ sets the counter to 0.
undump "<filename>"
Read a snapshot of the machine from the file specified.
Next: Memory commands, Previous: Terminology, Up: Monitor [Contents][Index]