MaximIntegrated 19-12
MAX31782 User’s Guide
Revision 0; 8/11
19.7.3ConditionalJumps
Conditional jumps transfer program execution based on the value of one of the status flags (C, E, Z, S) . Except where
noted for JUMP E and JUMP NE, the absolute and relative operands allowed are the same as for the unconditional
JUMP command .
jump
c, Label1
; jump to Label1 if Carry is set
jump
nc, LongJump ; jump to LongJump if Carry is not set
jump
z, LC[0]
; jump to 16-bit register destination if
;
Zero is set
jump
nz, Label1 ; jump to Label1 if Zero is not set (Acc<>0)
jump
s, A[2]
; jump to A[2] if Sign flag is set
jump
e, Label1
; jump to Label1 if Equal is set
jump
ne, Label1 ; jump to Label1 if Equal is cleared
JUMP E and JUMP NE may only use immediate destinations .
19.7.4CallingSubroutines
The CALL instruction works the same as the unconditional JUMP, except that the next execution address is pushed
on the stack before transferring program execution to the branch address . The RET instruction is used to return from a
normal call, and RETI is used to return from an interrupt handler routine .
call
Label1
; if Label1 is relative,
; assembles to : call #immediate
call
LongCall
; assembles to:
move PFX[0], #high(LongCall)
; call #low(LongCall)
call
LC[0]
; call to address in LC[0]
LongCall:
ret
; return from subroutine
