; Full VICE debug session for c64os.prg
; Launch with examples/vice-debug-c64os.bat, then in the monitor run:
; playback "examples/vice-monitor-c64os-debug.txt"

radix H
device c:
sidefx off

; Give useful labels to the known startup locations.
add_label $0801 .basic_stub
add_label $0810 .start

; Break when BASIC transfers control to the machine code entry.
break exec .start

; Watch memory banking changes and dump the CPU port state when they happen.
watch store $0001
command 2 "m $0000 $0002"

; Watch IRQ vector changes in case startup or later code patches them.
watch store $0314 $0315

; Show the BASIC stub, startup code, and current CPU port state.
d .basic_stub $0840
m $0000 $0002
r

; Helpful follow-up commands once the first breakpoint triggers:
; step          ; step into the next instruction
; next          ; step over KERNAL calls
; return        ; run until the current subroutine exits
; bt            ; show JSR call chain
; io $d000      ; inspect VIC-II registers
; io $dc00      ; inspect CIA #1 registers
; keybuf "help\x0d" ; inject a HELP command into the shell

stop