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PCI_IOWrite
Programmer's Reference Manuals
» Part 15 – SWI Calls
» PCI
» PCI_IOWrite
PCI_IOWrite
(SWI &50385)
| Entry | |
|---|---|
| R0 | PCI address |
| R1 | Access size (1, 2 or 4 for byte/half word/word) |
| R2 | Value to write |
| Exit | |
|---|---|
| R0 | Preserved ? |
| R1 | Preserved ? |
| R2 | Preserved ? |
Use
The purpose of this call is to perform an IO write cycle of the denoted size.
Notes
The PCI address used by R0 on entry can be found by calling PCI_HardwareAddress.
An IO read operation is performed by calling PCI_IORead.
See also
- PCI
- PCI Function Handles?
- PCI_HardwareAddress
- PCI_IORead