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參數資料
| 型號： | HTVDS84 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | 8-Bit High Performance Microcontroller With Macro Instruction and Voice Synthesizer and Tone Generator(高性能、8位微控制器，帶宏指令、聲話音成器和聲音發生器) |
| 中文描述： | 8位高性能微控制器，帶有宏觀指導和語音合成器和音發生器（高性能，8位微控制器，帶宏指令，聲話音成器和聲音發生器） |
| 文件頁數： | 31/44頁 |
| 文件大?。?/td> | 275K |
| 代理商： | HTVDS84 |
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HTVDS84
31
June 7, 2000
CPLA [m]
Complement data memory and place result in accumulator
Description
Each bit of the specified data memory is logically complemented (1's comple-
ment). Bits which previously contained a one are changed to zero and
vice-versa. The complemented result is stored in the accumulator and the
contents of the data memory remain unchanged.
Operation
ACC
[m]
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
DAA [m]
Decimal-Adjust accumulator for addition
Description
The accumulator value is adjusted to the BCD (Binary Code Decimal) code.
The accumulator is divided into two nibbles. Each nibble is adjusted to BCD
code and an internal carry (AC1) will be generated if the low nibble of the ac-
cumulator is greater than 9. The BCD adjustment is done by adding 6 to the
original value if the original value is greater than 9 or a carry (AC or C) is set;
otherwise the original value remains unchanged. The result is stored in the
data memory and only the carry flag (C) may be affected.
Operation
If (ACC.3~ACC.0) >9 or AC=1
then ([m].3~[m].0)
else ([m].3~[m].0)
If (ACC.7~ACC.4)+AC1 >9 or C=1
then ([m].7~[m].4)
else ([m].7~[m].4)
(ACC.3~ACC.0)+6, AC1=AC
(ACC.3~ACC.0), AC1=0
(ACC.7~ACC.4)+6+AC1, C=1
(ACC.7~ACC.4)+AC1, C=C
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
DEC [m]
Decrement data memory
Description
Data in the specified data memory is decremented by one.
Operation
[m]
[m] 1
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
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