HT49C30-1 View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
MFG CO.
'HT49C30-1' PDF : 41 Pages View PDF
SUB A,[m]
Description
Operation
Affected flag(s)
SUBM A,[m]
Description
Operation
Affected flag(s)
SUB A,x
Description
Operation
Affected flag(s)
SWAP [m]
Description
Operation
Affected flag(s)
SWAPA [m]
Description
Operation
Affected flag(s)
HT49R30A-1/HT49C30-1/HT49C30L
Subtract data memory from the accumulator
The specified data memory is subtracted from the contents of the accumulator, leaving the
result in the accumulator.
ACC ¬ ACC+[m]+1
TC2 TC1 TO PD OV Z AC C
¾
¾
¾¾
Ö
Ö
Ö
Ö
Subtract data memory from the accumulator
The specified data memory is subtracted from the contents of the accumulator, leaving the
result in the data memory.
[m] ¬ ACC+[m]+1
TC2 TC1 TO PD OV Z AC C
¾
¾
¾¾
Ö
Ö
Ö
Ö
Subtract immediate data from the accumulator
The immediate data specified by the code is subtracted from the contents of the accumula-
tor, leaving the result in the accumulator.
ACC ¬ ACC+x+1
TC2 TC1 TO PD OV Z AC C
¾ ¾ ¾¾ Ö
Ö
Ö
Ö
Swap nibbles within the data memory
The low-order and high-order nibbles of the specified data memory (1 of the data memo-
ries) are interchanged.
[m].3~[m].0 « [m].7~[m].4
TC2 TC1 TO PD OV Z AC C
¾ ¾ ¾¾¾¾¾¾
Swap data memory and place result in the accumulator
The low-order and high-order nibbles of the specified data memory are interchanged, writ-
ing the result to the accumulator. The contents of the data memory remain unchanged.
ACC.3~ACC.0 ¬ [m].7~[m].4
ACC.7~ACC.4 ¬ [m].3~[m].0
TC2 TC1 TO PD OV Z AC C
¾ ¾ ¾¾¾¾¾¾
Rev. 1.10
37
September 25, 2002
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