GN_Fab, Free alarm block

Owned by Gunther Strube
Last updated: May 29, 2012Version comment
1 min read

Register parameters

RST 20H, DEFW $6A09
IN:
     BHL = pointer to alarm block

OUT, if call successful:
     Fc = 0
OUT, if call failed:
     Fc = 1
     A = error code:
          RC_BAD ($04), bad alarm block, fatal error

Registers changed after return:
     ...CDE../IXIY same
     AFB...HL/.... different 

Related calls

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GN_Alp, process an expired alarm (internal OZ usage)
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