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LDA: Difference between revisions
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'''LDA''' (Load Accumulator) is a 65x instruction that loads the accumulator. | '''LDA''' (Load Accumulator) is a 65x instruction that loads the accumulator. | ||
{| class="wikitable" style="float:right;clear:right;width:30%" | |||
!colspan="8"|Basic Info | |||
|+ | |||
|'''Addressing Mode''' | |||
|'''Opcode''' | |||
|'''Length''' | |||
|'''Speed''' | |||
|+ | |||
|immediate | |||
|A9 | |||
|2 bytes | |||
|2 cycles | |||
|+ | |||
|absolute | |||
|AD | |||
|3 bytes | |||
|4 cycles | |||
|+ | |||
|absolute long | |||
|AF | |||
|4 bytes | |||
|5 cycles | |||
|+ | |||
|direct page | |||
|A5 | |||
|2 bytes | |||
|3 cycles | |||
|+ | |||
|direct page indirect | |||
|B2 | |||
|2 bytes | |||
|5 cycles | |||
|+ | |||
|direct page indirect long | |||
|A7 | |||
|2 bytes | |||
|6 cycles | |||
|+ | |||
|absolute indexed by X | |||
|BD | |||
|3 bytes | |||
|4 cycles | |||
|+ | |||
|absolute long indexed by X | |||
|BF | |||
|4 bytes | |||
|5 cycles | |||
|+ | |||
|absolute indexed by Y | |||
|B9 | |||
|3 bytes | |||
|4 cycles | |||
|+ | |||
|direct page indexed by X | |||
|B5 | |||
|2 bytes | |||
|4 cycles | |||
|+ | |||
|direct page indexed indirect by X | |||
|A1 | |||
|2 bytes | |||
|6 cycles | |||
|+ | |||
|direct page indirect indexed by Y | |||
|B1 | |||
|2 bytes | |||
|5 cycles | |||
|+ | |||
|direct page indirect long indexed by Y | |||
|B7 | |||
|2 bytes | |||
|6 cycles | |||
|+ | |||
|stack relative | |||
|A3 | |||
|2 bytes | |||
|4 cycles | |||
|+ | |||
|stack relative indirect indexed by Y | |||
|B3 | |||
|2 bytes | |||
|7 cycles | |||
|} | |||
[[Category:ASM]] | [[Category:ASM]] |
Revision as of 06:01, 2 May 2023
LDA (Load Accumulator) is a 65x instruction that loads the accumulator.
Basic Info | |||||||
---|---|---|---|---|---|---|---|
Addressing Mode | Opcode | Length | Speed | ||||
immediate | A9 | 2 bytes | 2 cycles | ||||
absolute | AD | 3 bytes | 4 cycles | ||||
absolute long | AF | 4 bytes | 5 cycles | ||||
direct page | A5 | 2 bytes | 3 cycles | ||||
direct page indirect | B2 | 2 bytes | 5 cycles | ||||
direct page indirect long | A7 | 2 bytes | 6 cycles | ||||
absolute indexed by X | BD | 3 bytes | 4 cycles | ||||
absolute long indexed by X | BF | 4 bytes | 5 cycles | ||||
absolute indexed by Y | B9 | 3 bytes | 4 cycles | ||||
direct page indexed by X | B5 | 2 bytes | 4 cycles | ||||
direct page indexed indirect by X | A1 | 2 bytes | 6 cycles | ||||
direct page indirect indexed by Y | B1 | 2 bytes | 5 cycles | ||||
direct page indirect long indexed by Y | B7 | 2 bytes | 6 cycles | ||||
stack relative | A3 | 2 bytes | 4 cycles | ||||
stack relative indirect indexed by Y | B3 | 2 bytes | 7 cycles |