User`s guide

Address Assignments
A.5 Processor Registers
Table A–1 (Cont.) Processor Registers
Number
Register
Name Mnemonic (Dec) (Hex) Type Impl Cat
I/O
Address
Ibox
Control
and Status
Register
ICSR 211 D3 RW NVAX 2-5
Ibox
Branch
Prediction
Control
Register
3
BPCR 212 D4 RW NVAX 2-5
Reserved 213 D5 NVAX 2-6
Ibox
Backup
PC
3
BPC 214 D6 R NVAX 2-5
Ibox
Backup PC
with RLOG
Unwind
3
BPCUNW 215 D7 R NVAX 2-5
Reserved 216–
223
D8 NVAX 2-6
Mbox
P0 Base
Register
3
MP0BR 224 E0 RW NVAX 2-5
Mbox P0
Length
Register
3
MP0LR 225 E1 RW NVAX 2-5
Mbox
P1 Base
Register
3
MP1BR 226 E2 RW NVAX 2-5
Mbox P1
Length
Register
3
MP1LR 227 E3 RW NVAX 2-5
Mbox
System
Base
Register
3
MSBR 228 E4 RW NVAX 2-5
3
Testability and diagnostic use only; not for software use in normal operation
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Address Assignments A–17