Holtek HT66F002 - Page 132

Rev. 1.71 132 April 11, 2017 Rev. 1.71 133 April 11, 2017
HT66F002/HT66F0025/HT66F003/HT66F004
Cost-Effective A/D Flash MCU with EEPROM
HT66F002/HT66F0025/HT66F003/HT66F004
Cost-Effective A/D Flash MCU with EEPROM
SDZA [m]
 SkipifdecrementDataMemoryiszerowithresultinACC
Description ThecontentsofthespeciedDataMemoryarerstdecrementedby1.Iftheresultis0,the
 followinginstructionisskipped.TheresultisstoredintheAccumulatorbutthespecied
 DataMemorycontentsremainunchanged.Asthisrequirestheinsertionofadummy
 instructionwhilethenextinstructionisfetched,itisatwocycleinstruction.Iftheresultisnot0,
 theprogramproceedswiththefollowinginstruction.
Operation ACC←[m]−1
 SkipifACC=0
Affectedag(s) None
SET [m]
 SetDataMemory
Description EachbitofthespeciedDataMemoryissetto1.
Operation [m]←FFH
Affectedag(s) None
SET [m].i
SetbitofDataMemory
Description BitiofthespeciedDataMemoryissetto1.
Operation [m].i←1
Affectedag(s) None
SIZ [m]
SkipifincrementDataMemoryis0
Description ThecontentsofthespeciedDataMemoryarerstincrementedby1.Iftheresultis0,the
 followinginstructionisskipped.Asthisrequirestheinsertionofadummyinstructionwhile
 thenextinstructionisfetched,itisatwocycleinstruction.Iftheresultisnot0theprogram
 proceedswiththefollowinginstruction.
Operation [m]←[m]+1
 Skipif[m]=0
Affectedag(s) None
SIZA [m]
SkipifincrementDataMemoryiszerowithresultinACC
Description ThecontentsofthespeciedDataMemoryarerstincrementedby1.Iftheresultis0,the
 followinginstructionisskipped.TheresultisstoredintheAccumulatorbutthespecied
 DataMemorycontentsremainunchanged.Asthisrequirestheinsertionofadummy
 instructionwhilethenextinstructionisfetched,itisatwocycleinstruction.Iftheresultisnot
 0theprogramproceedswiththefollowinginstruction.
Operation ACC←[m]+1
 SkipifACC=0
Affectedag(s) None
SNZ [m].i
SkipifbitiofDataMemoryisnot0
Description IfbitiofthespeciedDataMemoryisnot0,thefollowinginstructionisskipped.Asthis
 requirestheinsertionofadummyinstructionwhilethenextinstructionisfetched,itisatwo
 cycleinstruction.Iftheresultis0theprogramproceedswiththefollowinginstruction.
Operation Skipif[m].i≠0
Affectedag(s) None
SUB A,[m]
 SubtractDataMemoryfromACC
Description ThespeciedDataMemoryissubtractedfromthecontentsoftheAccumulator.Theresultis
 storedintheAccumulator.Notethatiftheresultofsubtractionisnegative,theCagwillbe
 clearedto0,otherwiseiftheresultispositiveorzero,theCagwillbesetto1.
Operation ACC←ACC−[m]
Affectedag(s) OV,Z,AC,C