Function 41h Wait On External Event (Convertible)entry AH 41h
AL condition type
bits 0-2: condition to wait for
0 any external event
1 compare and return if equal
2 compare and return if not equal
3 test and return if not zero
4 test and return if zero
bit 3: reserved
bit 4: 1=port address, 0=user byte
bits 5-7: reserved
BH condition compare or mask value
condition codes:
0 any external event
1 compare and return if equal
2 compare and return if not equal
3 test and return if not zero
4 test and return if zero
BL timeout value times 55 milliseconds
0 if no time limit
DX I/O port address (if AL bit 4 = 1)
ES:DI pointer to user byte (if AL bit 4 = 0)
file: /Techref/int/15f/41.htm, 0KB, , updated: 1999/4/26 11:43, local time: 2024/12/24 06:05,
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