SYSTEM CALLS
M68CPU32BUG/D REV 1 5-7
.CHKBRK Check for Break .CHKBRK
5.2.3 Check for Break
SYSCALL .CHKBRK
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
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