Zilog EZ80F916 - Manual (Page 297)

eZ80
®
CPU
User Manual
UM007715-0415 CPU Instruction Set
288
RES b, (HL)
Reset Bit
Operation
(HL)[b]  0
Description
The (HL) operand is an 8-bit value at the memory location specified by the contents of the
multibyte register (HL). Bit b of this value is reset to 0.
Condition Bits Affected
None.
Attributes
kk
= binary code
10 bbb 110
; where
bbb
identifies the bit tested and is assembled into
the object code, as indicated in Table 80 .
Mnemonic Operand ADL Mode Cycle Opcode (hex)
RES b
,(HL) X 3
CB, kk
RES
.S
b
,(HL) 1 4
52, CB, kk
RES
.L
b
,(HL) 0 4
49, CB, kk
Table 80. bbb Opcodes for RES b, (HL) Instruction (hex)
Bit

Tested bbb
0
000
1
001
2
010
3
011
4
100
5
101
6
110
7
111