Maxim Integrated MAX31782 - Manual (Page 186)

MaximIntegrated 20-3
MAX31782 User’s Guide
ADD/ADDCsrc Add/AddwithCarry
Description: The ADD instruction sums the active accumulator (Acc or A[AP]) and the specified src data and
stores the result back to the active accumulator . The ADDC instruction additionally includes the
Carry (C) Status Flag in the sum- mation . For the complete list of src specifiers, reference the MOVE
instruction . Because the source field is limited to 8 bits, the PFX[n] register is used to supply the
high-byte of data for 16 bit sources .
StatusFlags: C, S, Z, OV
ADDOperation: Acc ← Acc + src
Encoding: 15 0
f100 1010 ssss ssss
Example(s): ; Acc = 2345h for each example
ADD A[3] ; A[3]=FF0Fh
; → Acc =2254h,C=1, Z=0, S=0, OV=0
ADD #0C0h ; → Acc =2405h,C=0, Z=0, S=0, OV=0
ADD A[4] ; A[4]=C000h
; → Acc = E345h, C=0, Z=0, S=1, OV=0
ADD A[5] ; A[5]=6789h
; → Acc = 8ACEh, C=0, Z=0, S=1, OV=1
ADDCOperation: Acc ← Acc + C + src
Encoding:
15 0
f110 1010 ssss ssss
Example(s): ; Acc = 2345h for each example
ADDC A[3] ; A[3] = DCBAh, C=1
; → Acc = 0000h, C=1, Z=1, S=0, OV=0
ADDC @DP[0]-- ; @DP[0] = 00EEh, C=1
; → Acc = 2434h, C=0, Z=0, S=0, OV=0
SpecialNotes: The active accumulator (Acc) is not allowed as the src for these operations .