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CY7C63310-SXC Datasheet(PDF) 11 Page - Cypress Semiconductor |
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CY7C63310-SXC Datasheet(HTML) 11 Page - Cypress Semiconductor |
11 / 91 page CY7C63310, CY7C638xx Document Number: 38-08035 Rev. *Q Page 11 of 91 Source Direct The result of an instruction using this addressing mode is placed in either the A register or the X register, which is specified as part of the instruction opcode. Operand 1 is an address that points to a location in the RAM memory space or the register space that is the source of the instruction. Arithmetic instructions require two sources; the second source is the A register or X register specified in the opcode. Instructions using this addressing mode are two bytes in length. Examples Source Indexed The result of an instruction using this addressing mode is placed in either the A register or the X register, which is specified as part of the instruction opcode. Operand 1 is added to the X register forming an address that points to a location in the RAM memory space or the register space that is the source of the instruction. Arithmetic instructions require two sources; the second source is the A register or X register specified in the opcode. Instructions using this addressing mode are two bytes in length. Examples Destination Direct The result of an instruction using this addressing mode is placed within the RAM memory space or the register space. Operand 1 is an address that points to the location of the result. The source for the instruction is either the A register or the X register, which is specified as part of the instruction opcode. Arithmetic instructions require two sources; the second source is the location specified by Operand 1. Instructions using this addressing mode are two bytes in length. Examples Destination Indexed The result of an instruction using this addressing mode is placed within the RAM memory space or the register space. Operand 1 is added to the X register forming the address that points to the location of the result. The source for the instruction is the A register. Arithmetic instructions require two sources; the second source is the location specified by Operand 1 added with the X register. Instructions using this addressing mode are two bytes in length. Example Table 9. Source Direct Opcode Operand 1 Instruction Source address ADD A [7] The value in the RAM memory location at address 7 is added with the Accumulator, and the result is placed in the Accumu- lator. MOV X REG[8] The value in the register space at address 8 is moved to the X register. Table 10. Source Indexed Opcode Operand 1 Instruction Source index ADD A [X+7] The value in the memory location at address X + 7 is added with the Accumulator, and the result is placed in the Accumulator. MOV X REG[X+8] The value in the register space at address X + 8 is moved to the X register. Table 11. Destination Direct Opcode Operand 1 Instruction Destination address ADD [7] A The value in the memory location at address 7 is added with the Accumu- lator, and the result is placed in the memory location at address 7. The Accumulator is unchanged. MOV REG[8] A The Accumulator is moved to the register space location at address 8. The Accumulator is unchanged. Table 12. Destination Indexed Opcode Operand 1 Instruction Destination index ADD [X+7] A The value in the; memory location at address X+7 is added with the Accumu- lator, and the result is placed in the memory location at address x+7. The Accumulator is unchanged. |
Similar Part No. - CY7C63310-SXC_12 |
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Similar Description - CY7C63310-SXC_12 |
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