SpinAsm AND: Difference between revisions
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(Created page with "==AND== {| class="wikitable" |+ !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) {| class="wikitable" |+ !Name !Width !Ent...") |
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======Coding Example====== | ======Coding Example====== | ||
<syntaxhighlight line="1"> | <syntaxhighlight line="1"> | ||
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 | |||
</syntaxhighlight> | </syntaxhighlight> | ||
Revision as of 20:21, 6 January 2023
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)
| 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