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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： | 38/44頁 |
| 文件大小： | 275K |
| 代理商： | HTVDS84 |
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HTVDS84
38
June 7, 2000
SBC A,[m]
Subtract data memory and carry from accumulator
Description
The contents of the specified data memory and the complement of the carry
flag are together subtracted from the accumulator, leaving the result in the
accumulator.
Operation
ACC
ACC+[m]+C
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
SBCM A,[m]
Subtract data memory and carry from accumulator
Description
The contents of the specified data memory and the complement of the carry
flag are together subtracted from the accumulator, leaving the result in the
data memory.
Operation
[m]
ACC+[m]+C
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
SDZ [m]
Skip if decrement data memory is zero
Description
The contents of the specified data memory are decremented by one. If the re-
sult is zero, the next instruction is skipped. If the result is zero, the following
instruction, fetched during the current instruction execution, is discarded
and a dummy cycle replaced to get the proper instruction. This makes a 2 cy-
cle instruction. Otherwise proceed with the next instruction.
Operation
Skip if ([m] 1)=0, [m]
([m] 1)
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
SDZA [m]
Decrement data memory and place result in ACC, skip if zero
Description
The contents of the specified data memory are decremented by one. If the re-
sult is zero, the next instruction is skipped. The result is stored in the accu-
mulator but the data memory remains unchanged. If the result is zero, the
following instruction, fetched during the current instruction execution, is
discarded and a dummy cycle is replaced to get the proper instruction, that
makes a 2 cycle instruction. Otherwise proceed to the next instruction.
Operation
Skip if ([m] 1)=0, ACC
([m] 1)
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
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