Table des matières
INT 0x1A - 0x00 - Read System Clock Counter
Request/Call:
reg | value | descr |
---|---|---|
AH | 0x00 |
Return:
reg | descr |
---|---|
AL | midnight flag 1 if 24 hours passed since reset |
CX | high order word of tick count |
DX | low order word of tick count |
Notes & Comments
- incremented approximately 18.206 times per second
- at midnight CX:DX is zero
- this function can be called in a program to assure the date is updated after midnight; this will avoid the passing two midnights date problem