Check For Break (.Chkbrk) - Motorola M68CPU32BUG User Manual

.CHKBRK
5.2.3 Check for Break
SYSCALL
TRAP CODE: $0005
Returns zero (0) status in condition code register if break status is detected at the default input
port.
Entry Conditions:
No arguments or stack allocation required
Exit Conditions:
Z flag set in CCR if break detected
EXAMPLE
SYSCALL .CHKBRK
BEQ BREAK
M68CPU32BUG/D REV 1
Check for Break
.CHKBRK
5-7
SYSTEM CALLS
.CHKBRK