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Service_LookupFileType
Programmer's Reference Manuals
» Part 16 – Service Calls
» Service_LookupFileType
Service_LookupFileType
(Service &42)
| Entry | |
|---|---|
| R1 | 66 (&42) |
| R2 | Filetype |
| Exit | |
|---|---|
| R1 | 0 to claim service (filetype known), else preserved |
| R2 | First four characters, if known |
| R3 | Last four characters, if known |
Use
This service is issued when a filetype lookup in the File$Type_XXX variable fails.
Notes
This service call has limited use, as System Variables are more useful.