2.2 CPU32 Registers
A6–A0 — Address registers (index registers)
A7 (SSP) — Supervisor Stack Pointer
A7 (USP) — User Stack Pointer
CCR — Condition code register (user portion of SR)
D7–D0 — Data Registers (index registers)
DFC — Alternate function code register
PC — Program counter
SFC — Alternate function code register
SR — Status register
VBR — Vector base register
X — Extend indicator
N — Negative indicator
Z — Zero indicator
V — Two's complement overflow indicator
C — Carry/borrow indicator
2
MOTOROLA
2-2
NOMENCLATURE
MC68331
USER’S MANUAL
MOTOROLA [ MOTOROLA ]
