參數資料
型號： HT48C50-
廠商： Holtek Semiconductor Inc.
元件分類： 數學處理器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8位微控制器
文件頁數： 39/45頁
文件大小： 295K
代理商： HT48C50-
SBC A,[m]
Subtract data memory and carry from the accumulator
Description
The contents of the specified data memory and the complement of the carry
flag are subtracted from the accumulator, leaving the result in the accumula-
tor.
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 the accumulator
Description
The contents of the specified data memory and the complement of the carry
flag are 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 0
Description
The contents of the specified data memory are decremented by 1. If the result
is 0, the next instruction is skipped. If the result is 0, the following instruc-
tion, fetched during the current instruction execution, is discarded and a
dummy cycle is replaced to get the proper instruction (2 cycles). Otherwise
proceed with the next instruction (1 cycle).
Operation
Skip if ([m] 1)=0, [m]
([m] 1)
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
HT48C50-1
39
June 14, 2000
Preliminary
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