Absolute Addressing Mode - Plus/4 Encyclopedia



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Absolute Addressing Mode
Category Programming/Assembly Topic The absolute addressing mode means that the operation is done on an address (memory location) that is specified as an absolute (non-relative, or otherwise modified) address. An example would be "STA $FF15". The address here is $FF15, the value of A will be stored exactly on that address (memory location). The address itself is stored in low byte / high byte or little-endian format. Example: "STA $FF15" is stored as $8D $15 $FF, where $8D is the opcode for STA, $15 is the low byte, $FF is the high byte of the absolute address. See Also 6502 addressing modes