Difference between revisions of "83Plus:BCALLs:80AB"
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=== Inputs === | === Inputs === | ||
| − | * AHL = address of the first type byte of the field whose contents you want to search ( | + | * AHL = address of the first type byte of the field whose contents you want to search (4000h if you want to search an installed app header) |
| − | * DE = field to search for (e.g. 8010 to search for the key ID) | + | * DE = field to search for (e.g. 8010 to search for the key ID or 8040 for app name) |
=== Outputs === | === Outputs === | ||
Latest revision as of 16:20, 14 August 2007
Synopsis
Unofficial Name: FindAppHeaderSubField
BCALL Address: 80AB
Search for a subfield of the given app header.
Inputs
- AHL = address of the first type byte of the field whose contents you want to search (4000h if you want to search an installed app header)
- DE = field to search for (e.g. 8010 to search for the key ID or 8040 for app name)
Outputs
- HL = address of the first type byte of the first matching field
- NZ set if not found.
Destroys
Comments
This routine is almost identical to FindOSHeaderSubfield; the difference is that it will allow you to search starting at a zero byte (i.e., a deleted app header.) The OS uses this routine to search for data in Flash Apps (which may or may not have been deleted already.)
