ht827a0 Holtek Semiconductor Inc., ht827a0 Datasheet - Page 46

• Manufacturer Part Number: ht827a0
• Description: 8-bit Microcontroller With Voice Rom
• Manufacturer: Holtek Semiconductor Inc.

SWAPA [m]
description
Operation
Affected flag(s)
SZ [m]
Description
Operation
Affected flag(s)
SZA [m]
Description
Operation
Affected flag(s)
Swap data memory - then place result in the accumulator
The low-order and high-order nibbles of the specified data memory are inter-
changed, writing the result to the accumulator. The contents of the data
memory remain unchanged.
ACC.3~ACC.0 ¬ [m].7~[m].4
ACC.7~ACC.4 ¬ [m].3~[m].0
Skip if data memory is zero
If the contents of the specified data memory are zero, the following instruc-
tion, fetched during the current instruction execution, is discarded and a
dummy cycle is replaced to get a proper instruction. This is a 2-cycle instruc-
tion. Otherwise proceed to the next instruction.
Skip if [m]=0
Move data memory to ACC, skip if zero
The contents of the specified data memory are copied to the accumulator. If
the contents are zero, the following instruction, fetched during the current
instruction execution, is discarded and a dummy cycle is replaced to get a
proper instruction. This is a 2-cycle instruction. Otherwise proceed to the
next instruction.
Skip if [m]=0
TC2
TC2
TC2
¾
¾
¾
TC1
TC1
TC1
¾
¾
¾
TO
TO
TO
¾
¾
¾
PD
PD
PD
¾
¾
¾
46
OV
OV
OV
¾
¾
¾
¾
¾
¾
Z
Z
Z
AC
AC
AC
¾
¾
¾
¾
¾
¾
C
C
C
March 15, 2000
HT827A0