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PCI_FindByClass
Programmer's Reference Manuals
» Part 15 – SWI Calls
» PCI
» PCI_FindByClass
PCI_FindByClass
(SWI &5038F)
| Entry | |
|---|---|
| R0 | Class code (24 bit) |
| R1 | Mask – matches if (function_class AND R1) = R0 |
| R3 | 0 to start, or R3 value last found |
| Exit | |
|---|---|
| R0 | Preserved ? |
| R1 | Preserved ? |
| R3 | Function handle |
Use
The purpose of this call is to find the function handle based on the class passed.
Notes
Only the bits in R1 of the class code will be checked so a mask of -1 will search for an exact match.