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ST72324BJ2 Datasheet(PDF) 131 Page - STMicroelectronics |
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ST72324BJ2 Datasheet(HTML) 131 Page - STMicroelectronics |
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131 / 188 page  ST72324B Instruction set 131/188 Indirect (short) The pointer address is a byte, the pointer size is a byte, thus allowing 00 - FF addressing space, and requires 1 byte after the opcode. Indirect (long) The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing space, and requires 1 byte after the opcode. 11.1.6 Indirect indexed (short, long) This is a combination of indirect and short indexed addressing modes. The operand is referenced by its memory address, which is defined by the unsigned addition of an index register value (X or Y) with a pointer value located in memory. The pointer address follows the opcode. The indirect indexed addressing mode consists of two submodes: Indirect indexed (short) The pointer address is a byte, the pointer size is a byte, thus allowing 00 - 1FE addressing space, and requires 1 byte after the opcode. Indirect indexed (long) The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing space, and requires 1 byte after the opcode. I Table 78. Instructions supporting direct, indexed, indirect and indirect indexed addressing modes Instructions Function Long and short LD Load CP Compare AND, OR, XOR Logical operations ADC, ADD, SUB, SBC Arithmetic Additions/Subtractions operations BCP Bit Compare Short only CLR Clear INC, DEC Increment/Decrement TNZ Test Negative or Zero CPL, NEG 1 or 2 Complement BSET, BRES Bit operations BTJT, BTJF Bit Test and Jump operations SLL, SRL, SRA, RLC, RRC Shift and Rotate operations SWAP Swap nibbles CALL, JP Call or Jump sub-routine |
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