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Copyright 1991 David Jurgens |
INT 15,41 - Wait on External Event (convertible only)
AH = 41h
AL = condition type:
│7│6│5│4│3│2│1│0│ AL
│ │ │ │ │ └─┴─┴──── conditions (codes) to wait for
│ │ │ │ └───────── reserved
│ │ │ └────────── 1=port address/0=user byte
└─┴─┴─────────── reserved
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
BH = condition compare or mask value
BL = time-out value times 55 ms, 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)
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| Esc or Alt-X to exit |
int 15,41 |
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