User`s guide

APPENDIX A
VAX-ll/730
REGISTERS
Table A-I Internal Processor Registers
Address
Hex Dec Mnemonic Access
Name
0 0
KSP
Kernel Stack Pointer
1
1
ESP Executive Stack Pointer
2 2
SSP Supervisor Stack Pointer
3
3
USP User Stack Pointer
4
4
ISP Interrupt Stack Pointer
8 8
POBR PO Base Register
9
9
POLR PO Length Register
A
10
PIBR PI Base Register
B
11 PILR PI Length Register
C 12
SBR System Base Register
D
13
SLR System Length Register
10 16 PCBB
Process
Control Block Base
11
17
SCBB
System Control Block Base
12
18 IPL
Interrupt Priority Level
13
19 ASTL
Asynchronous System Trap Level
14 20 SIRR WO
Software Interrupt Request Register
15
21 SISR
Software Interrupt Summary Register
18
24 ICCS
Interval Clock Control and Status
19 25
NICR WO
Next Interval Count Register
lA 26 ICR
RO Interval Count Register
IB
27 TODR
Time of Year Register
lC 28 CSRS
Console Storage Receive Status
ID
29 CSRD
RO Console Storage Receive Data
IE 30 CSTS
Console Storage Transmit Status
IF
31
CSTD WO
Console Storage Transmit Data
20
32
RXCS
Console Receiver Control and Status
21
33 RXDB RO Console Receiver Data Buffer
22 34 TXCS
Console Transmit Control and Status
23 35 TXDB
WO
Console Transmit Data Buffer
26 38 MCESR
RO Any write clears "machine check in-progress" flag
28 40 ACCS
Accelerator Control and Status
*
37 55 WO
Initialize UNIBUS
38 56
MAPEN
Memory Management Enable
39
57
TBIA
Translation Buffer Invalidate All
3A
58 TBIS
Translation Buffer Invalidate Single
3D
61 PMR
Performance Monitor Enable
3E
62 SID
RO
System Identification Register
WO = Write Only
RO = Read Only
*
= VAX-l 1/730 Specific Register
A-I