SpinAsm XOR: Difference between revisions
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======Description====== | ======Description====== | ||
XOR will perform a bit wise "xor" of the current ACC and the 24bit MASK specified within the instruction word. The instruction will invert ACC provided MASK equals $FFFFFF. (see also the pseudo opcode section) | XOR will perform a bit wise "xor" of the current ACC and the 24bit MASK specified within the instruction word. The instruction will invert ACC provided MASK equals $FFFFFF. (see also the pseudo opcode section) | ||
====== Parameters ====== | |||
{| class="wikitable" | {| class="wikitable" | ||
|+ | |+ | ||
!Name | !Name | ||
!Width | !Width | ||
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======Coding Example====== | ======Coding Example====== | ||
< | <pre> | ||
XMASK EQU $AAAAAA ; | XMASK EQU $AAAAAA ; | ||
; | ; | ||
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xor %01010101_01010101_01010101 ; Invert all even numbered bits | xor %01010101_01010101_01010101 ; Invert all even numbered bits | ||
xor XMASK ; Invert all odd numbered bits | xor XMASK ; Invert all odd numbered bits | ||
</ | </pre> | ||
Latest revision as of 13:46, 22 November 2024
XOR
| Mnemonic | Operation | Instruction coding |
|---|---|---|
| XOR | ACC ^ MASK | MMMMMMMMMMMMMMMMMMMMMMMM000010000 |
Description
XOR will perform a bit wise "xor" of the current ACC and the 24bit MASK specified within the instruction word. The instruction will invert ACC provided MASK equals $FFFFFF. (see also the pseudo opcode section)
Parameters
| Name | Width | Entry formats, range |
|---|---|---|
| M | 24 Bit | Binary
Hex ($000000 - $FFFFFF) Symbolic |
Syntax
XOR M
Coding Example
XMASK EQU $AAAAAA ;
;
;-------------------------------------------
sof 0,0 ; Clear all bits within ACC
xor $0 ; Set all ACC bits
xor %01010101_01010101_01010101 ; Invert all even numbered bits
xor XMASK ; Invert all odd numbered bits