HT46R47
SNZ [m].i
Skip if bit ²i² of the data memory is not 0.
Description
If bit ²i² of the specified data memory is not 0, the next instruction is skipped.
If bit ²i² of the data memory is not 0, the following instruction, fetched during
the current instruction execution, is discarded and a dummy cycle is re-
placed to get the proper instruction (2 cycles). Otherwise proceed with the
next instruction (1 cycle).
Operation
Skip if [m].i¹0
Affected flag(s)
TC2 TC1 TO PD OV
Z
AC
C
¾
¾
¾
¾
¾
¾
¾
¾
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
¾
¾
¾
¾
Ö
Ö
Ö
Ö
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
¾
¾
¾
¾
Ö
Ö
Ö
Ö
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
¾
¾
¾
¾
Ö
Ö
Ö
Ö
Rev. 1.40
41
July 18, 2001
ETC [ ETC ]
