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数据搜索系统，热门电子元器件搜索 |
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L9803 数据表(PDF) 110 Page - STMicroelectronics |
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L9803 数据表(HTML) 110 Page - STMicroelectronics |
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110 / 126 page  Instruction Set L9803 110/126 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 sub-modes: 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 64Kb addressing space, and requires 1 byte after the opcode. Relative mode (direct, indirect): This addressing mode is used to modify the PC register value, by adding an 8 bit signed offset to it. Long and Short Indirect Indexed Instructions Function LD Load CP Compare AND, OR, XOR Logical Operations ADC, ADD, SUB, SBC Arithmetic Additions/Substructions operations BCP Bit Compare Short Indirect Indexed Instructions Only Function 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 subroutine Available Relative Direct/Indirect Instructions Function JRxx Conditional Jump CALLR Call Relative |
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