參數(shù)資料
型號(hào): HT49R50
廠商: Holtek Semiconductor Inc.
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 48/59頁
文件大小: 339K
代理商: HT49R50
SNZ [m].i
Skip if bit "i" of the data memory is not zero
Description
If bit "i" of the specified data memory is not zero, the next instruction is
skipped. If bit "i" of the data memory is not zero, the following instruction,
fetched during the current instruction execution, is discarded and a dummy
cycle is replaced to get the proper instruction (two cycles). Otherwise proceed
with the next instruction (one cycle).
Operation
Skip if [m].i 0
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
SUB A,[m]
Subtract data memory from the accumulator
Description
The specified data memory is subtracted from the contents of the accumula-
tor, leaving the result in the accumulator.
Operation
ACC
ACC+[m]+1
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
SUBM A,[m]
Subtract data memory from the accumulator
Description
The specified data memory is subtracted from the contents of the accumula-
tor, leaving the result in the data memory.
Operation
[m]
ACC+[m]+1
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
SUB A,x
Subtract immediate data from the accumulator
Description
The immediate data specified by the code is subtracted from the contents of
the accumulator, leaving the result in the accumulator.
Operation
ACC
ACC+x+1
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
HT49R50
48
October 22, 1999
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