SpinAsm AND: Difference between revisions
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======Description====== | ======Description====== | ||
AND will perform a bit wise "and" of the current ACC and the 24bit MASK specified within the instruction word. The instruction might be used to load a constant into ACC provided ACC contains $FFFFFF or to clear ACC if MASK equals $000000. (see also the pseudo opcode section) | AND will perform a bit wise "and" of the current ACC and the 24bit MASK specified within the instruction word. The instruction might be used to load a constant into ACC provided ACC contains $FFFFFF or to clear ACC if MASK equals $000000. (see also the pseudo opcode section) | ||
====== Parameters ====== | |||
{| class="wikitable" | {| class="wikitable" | ||
|+ | |+ | ||
!Name | !Name | ||
!Width | !Width | ||
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======Coding Example====== | ======Coding Example====== | ||
< | <pre> | ||
AMASK EQU $F0FFFF ; | AMASK EQU $F0FFFF ; | ||
; | ; | ||
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and AMASK ; Clear ACC[19..16] | and AMASK ; Clear ACC[19..16] | ||
and $0 ; Clear ACC | and $0 ; Clear ACC | ||
</ | </pre> | ||
Latest revision as of 13:46, 22 November 2024
AND
| Mnemonic | Operation | Instruction coding |
|---|---|---|
| AND | ACC & MASK | MMMMMMMMMMMMMMMMMMMMMMMM000001110 |
Description
AND will perform a bit wise "and" of the current ACC and the 24bit MASK specified within the instruction word. The instruction might be used to load a constant into ACC provided ACC contains $FFFFFF or to clear ACC if MASK equals $000000. (see also the pseudo opcode section)
Parameters
| Name | Width | Entry formats, range |
|---|---|---|
| M | 24 Bit | Binary
Hex ($000000 - $FFFFFF) Symbolic |
Syntax
AND M
Coding Example
AMASK EQU $F0FFFF ;
;
;------------------------------------
or $FFFFFF ; Set all bits within ACC
and $FFFFFE ; Clear LSB
and %01111111_11111111_11111111 ; Clear MSB
and AMASK ; Clear ACC[19..16]
and $0 ; Clear ACC