PCI_ConfigurationRead (changes)
Showing changes from revision #1 to #2:
Added | Removed | Changed
Programmer's PCI Reference Manuals
» Part 15 – SWI Calls
» PCI_ConfigurationReadPCI
» PCI_ConfigurationRead
PCI_ConfigurationRead
(SWI &50388)
| Entry | |
|---|---|
| R0 | Configuration space address (0-255) or bus/dev/fn/address |
| R2 | Access size (1, 2 or 4 for byte/half word/word) |
| R3 |
| Exit | |
|---|---|
| R0 | Preserved ? |
| R1 | Value read |
| R2 | Preserved ? |
| R3 | Preserved ? |
Use
The purpose of this call is to perform a Configuration Read cycle of the denoted size.
Notes
PCI_ConfiurationWrite?PCI_ConfigurationWrite is used to perform a Configuration Write cycle of the denoted size.
See also
PCIPCI_ConfigurationWrite- PCI Function Handles
- PCI_ConfiurationWrite?
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.