GMS30C2216 Datasheet, PDF (283/320 Pages) Hynix Semiconductor – 16/32 BIT RISC/DSP

Appendix A. Instruction Set Details
Rotate Left
A-111
ROL
Format:
LL format
15
OP-code
1000 1111
7
43
0
Ld-code
Ls-code
Ls-code encodes L0..L15 for Ls
Ld-code encodes L0..L15 for Ld
Notation:
ROL Ld, Ls
Description:
The destination operand is shifted left by a number of bit positions and the bits shifted out
are inserted in the vacated bit positions; thus, the destination operand is rotated. The
condition flags are set or cleared accordingly. Bits 4..0 of the source operand specify a
rotation by 0..31 bit positions; bits 31..5 of the source operand are ignored.
Operation:
Ld := Ld rotated left by Ls(4..0);
Z := Ld = 0;
N := Ld(31);
V := undefined;
C := undefined;
Exceptions:
None.