eZ80
®
CPU
User Manual
UM007714-0908 CPU Instruction Set
342
SET b, r
Set Bit
Operation
r[b] ← 1
Description
The
r
operand is any of the 8-bit CPU registers A, B, C, D, E, H, or L. Bit
b
of the speci-
fied register is set to 1.
Condition Bits Affected
None.
Attributes
jj = binary code 11 bbb rrr and kk = binary code 11 bbb 110; where rrr identifies
the A, B, C, D, E, H, or L register and
bbb identifies the bit tested and assembled into the
object code, as indicated in Table 98.
Mnemonic Operand ADL Mode Cycle Opcode (hex)
SET b,r X2CB, jj
Table 98. bbb, Register, and rrr Opcodes for SET b, r Instruction (hex)
Bit
Tested bbb Register rrr
0 000 A 111
1 001 B 000
2 010 C 001
3 011 D 010
4 100 E 011
5 101 H 100
6 110 L 101
7 111
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