User`s guide

4.1.3 DECchip 21071-CA CSR Space (1 8000 0000 to 1 9FFF FFFF)
The DECchip 21071-CA responds to all CSR accesses in this space. Table 4–2
specifies the registers and associated register addresses. Appendix A contains
the register descriptions.
Table 4–2 DECchip 21071-CA CSR Register Addresses
Address
16
Register Name
1 8000 0000 General control register
1 8000 0020 Reserved
1 8000 0040 Error and diagnostic status register
1 8000 0060 Tag enable register
1 8000 0080 Error low address register
1 8000 00A0 Error high address register
1 8000 00C0 LDx_L low address register
1 8000 00E0 LDx_L high address register
1 8000 0200 Global timing register
1 8000 0220 Refresh timing register
1 8000 0240 Video frame pointer register
1 8000 0260 Presence detect low-data register
1 8000 0280 Presence detect high-data register
1 8000 0800 Bank 0 base address register
1 8000 0820 Bank 1 base address register
1 8000 0840 Bank 2 base address register
1 8000 0860 Bank 3 base address register
1 8000 0880 Bank 4 base address register
1 8000 08A0 Bank 5 base address register
1 8000 08C0 Bank 6 base address register
1 8000 08E0 Bank 7 base address register
1 8000 0900 Bank 8 base address register
(continued on next page)
System Address Mapping 4–5