User`s guide

PR$_SAVPC
SAVed Program Counter, IPR 42.
PR$_SAVPSL
SAVed Program Status Longword, IPR 43.
PR$_SCBB
System Control Block Base register, IPR 17.
PR$_SISR
Software Interrupt Summary Register, IPR 21.
PR$_TODR
Time Of Day Register, IPR 27, is commonly referred to as the Time Of Year
register or TOY clock.
PR$_TXCS
T(X)ransmit Console Status, IPR 34.
PR$_TXDB
T(X)ransmit Data Buffer, IPR 35.
PROM
Programmable read-only memory. A read-only memory device that can be
programmed.
PSL, PSW
Processor Status Longword is the VAX extension of the PSW (Processor Status
Word). The PSW (lower word) contains instruction condition codes and is
accessible by nonprivileged users; however, the upper word contains system
status information and is accessible by privileged users.
QBMB
Q22–bus Map Base Register found in the CQBIC determines the base address
in local memory for the scatter/gather registers.
QDSS
Q22–bus video controller for workstations.
QMR
Q22–bus Map Register.
Glossary–6