The latest MPASM/MPLAB User's Guides contain a
table showing this and all other pseudo-ops understood by MPASM;
here's the list:
PIC16CXX SPECIAL INSTRUCTION MNEMONICS
Name Mnemonic Equivalent Status
Operation(s)
Clear Carry CLRC BCF 3,0 -
Clear Digit Carry CLRDC BCF 3,1 -
Set Digit Carry SETDC BSF 3,1 -
Clear Zero CLRZ BCF 3,2 -
Set Zero SETZ BSF 3,2 -
Skip on Carry SKPC BTFSS 3,0 -
Skip on No Carry SKPNC BTFSC 3,0 -
Skip on Digit Carry SKPDC BTFSS 3,1 -
Skip on No Digit Carry SKPNDC BTFSC 3,1 -
Skip on Zero SKPZ BTFSS 3,2 -
Skip on Non Zero SKPNZ BTFSC 3,2 -
Test File TSTF f MOVF f,1 Z
Move File to W MOVFW f MOVF f,0 Z
Negate File NEGF f,d COMF f,1
INCF f,d Z
Add Carry to File ADDCF f,d BTFSC 3,0
INCF f,d Z
Subtract Carry from File SUBCF f,d BTFSC 3,0
DECF f,d Z
Add Digit Carry to File ADDDCF f,d BTFSC 3,1
INCF f,d Z
Subtract Digit SUBDCF f,d BTFSC 3,1
Carry from File DECF f,d Z
Branch B k GOTO k -
Branch on Carry BC k BTFSC 3,0
GOTO k -
Branch on No Carry BNC k BTFSS 3,0
GOTO k -
Branch on Digit Carry BDC k BTFSC 3,1
GOTO k -
Branch on No Digit Carry BNDC k BTFSS 3,1
GOTO k -
Branch on Zero BZ k BTFSC 3,2
GOTO k -
Branch on Non Zero BNZ k BTFSS 3,2
GOTO k -
Call across page boundary LCALL k BCF 3,5 or BSF 3,5
BCF 3,6 or BSF 3,6
CALL k
By the way, don't bother using the "LCALL" pseudo-op... Since it
doesn't restore the code-page bits after the CALL, it's sorta
useless. Also, be careful with the pseudo-ops that assemble to two
instructions; constructs like the following, for instance, will cause
you great pain and suffering:
; DON'T DO THIS!
BTFSS FLAGS,SWITCH ;If the switch is pressed, skip ahead.
NEGF REG ;Otherwise, negate the REG register.
Questions:
Comments:
Andrew Russell Morris Says:
Thanks a lot! A consultant my former employer hired used BZ and BNZ extensively. I have also been using them as well, but I didn't know where they came from and I wanted to know if there were any more of them. Also, I needed to be sure that they would reliably work. This posting helped me. Thanks a lot!+
| file: /techref/microchip/mpasmpseudo.htm, 4KB, , updated: 2005/8/9 12:38, local time: 2008/12/3 12:49,
owner: JMN-EFP-786,
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