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TXA: Difference between revisions

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(→‎See Also: TXY, STX)
(→‎External Links: de n'd page number)
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=== External Links ===
=== External Links ===
* [[Eyes & Lichty]] page 517, on TXA: https://archive.org/details/0893037893ProgrammingThe65816/page/n543
* [[Eyes & Lichty]] page 517, on TXA: https://archive.org/details/0893037893ProgrammingThe65816/page/517
* [[Labiak]] page 198 on TXA: https://archive.org/details/Programming_the_65816/page/n208
* [[Labiak]] page 198 on TXA: https://archive.org/details/Programming_the_65816/page/n208
* [[MCS6500 Manual]] page 100 on TXA: https://archive.org/details/mos_microcomputers_programming_manual/page/n118
* [[MCS6500 Manual]] page 100 on TXA: https://archive.org/details/mos_microcomputers_programming_manual/page/n118

Revision as of 11:50, 15 July 2024

Basic Info
Addressing Mode Opcode Length Speed
Implied (type 1) 8A 1 byte 2 cycles
Flags Affected
N V M X D I Z C
. . . . . .

TXA is a 65x instruction that transfers the value of the X index register to the accumulator.

Instruction Behavior
8-bit accumulator (m=1) 16-bit accumulator (m=0)
8-bit index registers (x=1) 8 bits are transferred 8 bits are transferred to the low byte of accumulator and high byte of the accumulator is zeroed
16-bit index registers (x=0) 8 bits are transferred 16 bits are transferred

Syntax

TXA

See Also

External Links