IN: BHL = pointer to alarm block (to be linked). Must have been previously allocated by GN_Aab. OUT, if call successful: Fc = 0 OUT, if call failed: Fc = 1, time/date already passed A = error code: RC_BAD ($04), bad parameters Registers changed after return: ..BCDEHL/IXIY same AF....../.... different
A badly formed block is likely to crash the machine. The routine does not check the vality of the alarm block.
GN_Aab, allocate alarm block
GN_Alp, process an expired alarm (internal OZ usage)
GN_Fab, free alarm block
GN_Uab, unlink an alarm block from the alarm chain
OS_Alm, alarm manipulation (internal OZ usage)