h6. [[PCI]] h6(. » [[PCI SWI Calls|SWI Calls]] h6((. » PCI_IOWrite h2. PCI_IOWrite h5. (SWI &50385) |_<^{width:4em}. Entry | | |<^. R0 |<^. PCI address | |<^. R1 |<^. Access size (1, 2 or 4 for byte/half word/word) | |<^. R2 |<^. Value to write | |_<^{width:4em}. Exit | | |<^. R0 |<^. Preserved ? | |<^. R1 |<^. Preserved ? | |<^. R2 |<^. Preserved ? | h4. Use The purpose of this call is to perform an IO write cycle of the denoted size. h4. 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]]. h4. See also * [[PCI_HardwareAddress]] * [[PCI_IORead]]