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BIT: Difference between revisions

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(dots for unclobbered flags)
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'''BIT''' is a 65x instruction that performs a logical AND operation between the [[accumulator]] and memory without storing the conjunction.
'''BIT''' is a 65x instruction that performs a logical AND operation between the [[accumulator]] and memory without storing the conjunction.
{| class="wikitable" style="float:right;clear:right;width:30%"
!colspan="8"|Basic Info
|+
|'''Addressing Mode'''
|'''Opcode'''
|'''Length'''
|'''Speed'''
|+
|immediate
|89
|2 bytes
|2 cycles
|+
|absolute
|2C
|3 bytes
|4 cycles
|+
|direct page
|24
|2 bytes
|3 cycles
|+
|absolute indexed X
|3C
|3 bytes
|4 cycles
|+
|direct page indexed X
|34
|2 bytes
|4 cycles
|}


{| class="wikitable" style="float:right;clear:right;width:30%"
{| class="wikitable" style="float:right;clear:right;width:30%"

Revision as of 18:04, 1 May 2023

BIT is a 65x instruction that performs a logical AND operation between the accumulator and memory without storing the conjunction.

Basic Info
Addressing Mode Opcode Length Speed
immediate 89 2 bytes 2 cycles
absolute 2C 3 bytes 4 cycles
direct page 24 2 bytes 3 cycles
absolute indexed X 3C 3 bytes 4 cycles
direct page indexed X 34 2 bytes 4 cycles
Flags Clobbered
N V M X D I Z C
. . . . .
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