Specifications

B–16 I/O Space Address Maps
Subject to Change – 17 January 1997
Hardware-Specific and Miscellaneous Register Space
B.6.2 CIA Memory Control CSR Space
CIA memory control CSR space occupies physical addresses 87.5000.0000 through
87.5FFF.FFFF. Table B–12 lists all the CIA chip’s memory control registers.
Performance Monitor Registers
PERF_MONITOR RO 87.4000.4000 Performance monitor register
PERF_CONTROL RW 87.4000.4040 Performance control register
Error Registers
CPU_ERR0 RO 87.4000.8000 CPU error information register 0
CPU_ERR1 RO 87.4000.8040 CPU error information register 1
CIA_ERR R/WC 87.4000.8200 CIA error register
CIA_STAT RW 87.4000.8240 CIA status register
ERR_MASK R/WC 87.4000.8280 CIA error mask register
CIA_SYN RO 87.4000.8300 CIA syndrome register
MEM_ERR0 RO 87.4000.8400 CIA memory port status register 0
MEM_ERR1 RO 87.4000.8440 CIA memory port status register 1
PCI_ERR0 R/WC 87.4000.8800 PCI error status register 0
PCI_ERR1 R/WC 87.4000.8840 PCI error status register 1
PCI_ERR2 R/WC 87.4000.8880 PCI error status register 2
Table B–12 CIA Memory Control Registers
Register Type Address Description
MCR RW 87.5000.0000 Memory configuration register
MBA0 RW 87.5000.0600 Memory base address register 0
MBA2 RW 87.5000.0680 Memory base address register 2
MBA4 RW 87.5000.0700 Memory base address register 4
MBA6 RW 87.5000.0780 Memory base address register 6
MBA8 RW 87.5000.0800 Memory base address register 8
Table B–11 (Continued) CIA Control, Diagnostic, and Error Registers
Register Type Address Description