# Vault 7: Projects

This publication series is about specific projects related to the Vault 7 main publication.

### Protego

# PIC24FJ64GA004 - Programmers Reference Manual

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© 2005-2011 Microchip Technology Inc. DS70157F-page 107
Section 5. Instruction Descriptions
Instruction
Descriptions
5
ADDC
Add Literal to Wn with Carry
Implemented in: PIC24F PIC24H PIC24E dsPIC30F dsPIC33F dsPIC33E
X X X X X X
Syntax: {label:} ADDC{.B} #lit10, Wn
Operands: lit10 ∈ [0 ... 255] for byte operation
lit10 ∈ [0 ... 1023] for word operation
Wn ∈ [W0 ... W15]
Operation: lit10 + (Wn) + (C) → Wn
Status Affected: DC, N, OV, Z, C
Encoding: 1011 0000 1Bkk kkkk kkkk dddd
Description: Add the 10-bit unsigned literal operand, the contents of the working
register Wn and the Carry bit, and place the result back into the working
register Wn.
The ‘B’ bit selects byte or word operation (‘0’ for word, ‘1’ for byte).
The ‘k’ bits specify the literal operand.
The ‘d’ bits select the address of the working register.
Note 1: The extension .B in the instruction denotes a byte operation
rather than a word operation. You may use a .W extension to
denote a word operation, but it is not required.
2: For byte operations, the literal must be specified as an
unsigned value [0:255]. See Section 4.6 “Using 10-bit Literal
Operands” for information on using 10-bit literal operands in
Byte mode.
3: The Z flag is “sticky” for ADDC, CPB, SUBB and SUBBR.
These instructions can only clear Z.
Words: 1
Cycles: 1
Example 1:
ADDC.B #0xFF, W7 ; Add -1 and C bit to W7 (Byte mode)
Before
Instruction
After
Instruction
W7 12C0 W7 12BF
SR 0000 (C = 0) SR 0009 (N,C = 1)
Example 2:
ADDC #0xFF, W1 ; Add 255 and C bit to W1 (Word mode)
Before
Instruction
After
Instruction
W1 12C0 W1 13C0
SR 0001 (C = 1) SR 0000

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