System Call Routines
http://www.motorola.com/computer/literature 5-13
5
.CHKBRK
Name
.CHKBRK - Check for break
Code
$0005
Description
.CHKBRK alters R03 according to a break status being detected at the
default input port.
Entry Conditions
No arguments required
Exit Conditions Different From Entry
R03: Bit 3 (ne) = 1; Bit 2 (eq) = 0 if break status is not detected.
R03: Bit 3 (ne) = 0; Bit 2 (eq) = 1 if break status is detected.
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