Maxim-integrated MAX31782 Manual do Utilizador descarregar pdf (Página 199)

Maxim Integrated 20-16

MAX31782 User’s Guide

Revision 0; 8/11

NEG Negate Accumulator

Description: Performs a negation (two’s complement) of the active accumulator and returns the result back to

the active accumulator.

Status Flags: S, Z

Operation: Acc ← ~Acc + 1

Encoding:

15 0

1000 1010

1001 1010

Example(s): ; Acc = FEEDh, S=1, Z=0

NEG ; Acc = 0113h, S=0, Z=0

OR src Logical OR

Description: Performs a logical-OR between the active accumulator (Acc or A[AP]) and the specified src data.

For the complete list of src specifiers, reference the MOVE instruction. Because the source is lim-

ited to 8 bits, the PFX[n] register is used to supply the high-byte of data for 16 bit sources.

Status Flags: S, Z

Operation: Acc ← Acc OR src

Encoding:

15 0

f010 1010

ssss ssss

Example(s): ; Acc = 2345h for each example

OR A[3] ; A[3]= 0F0Fh → Acc = 2F4Fh

OR #1133h ; MOVE PFX[0], #11h (smart-prefixing)

; OR #33h → Acc = 3377h

Special Notes: The active accumulator (Acc) is not allowed as the src for this operation.

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Maxim-integrated MAX31782 Manual do Utilizador Página 199