Maxim Integrated MAX31782 - Manual (Page 189)

MaximIntegrated 20-6
MAX31782 User’s Guide
Revision 0; 8/11
CMPsrc CompareAccumulator
Description: Compare for equality between the active accumulator and the least significant byte of the speci-
fied src . Because the source is limited to 8 bits, the PFX[n] register is used to supply the high-byte
of data for 16 bit sources .
StatusFlags: E
Operation: Acc = src: E ← 1
Acc <> src: E ← 0
Encoding: 15 0
f111 1000 ssss ssss
Example(s): CMP #45h ; Acc = 0145h, E=0
CMP #145h ; PFX[0] register used
; MOVE PFX[0], #01h (smart-prefixing)
; CMP #45h E=1
CPL ComplementAcc
Description: Performs a logical bitwise complement (1’s complement) on the active accumulator (Acc or A[AP])
and returns the result to the active accumulator .
StatusFlags: S, Z
Operation: Acc ← ~Acc
Encoding: 15 0
1000 1010 0001 1010
Example(s): ; Acc = FFFFh, S=1, Z=0
CPL ; Acc ← 0000h, S=0, Z=1
; Acc = 0990h, S=0, Z=0
CPL ; Acc ← F66Fh, S=1, Z=0