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CY7C601xx

CY7C602xx

Document 38-16016 Rev. *C Page 11 of 62

Destination Direct Source Immediate

The result of an instruction using this addressing mode is

placed within either the RAM memory space or the register

space. Operand 1 is the address of the result. The source for

the instruction is Operand 2, which is an immediate value.

Arithmetic instructions require two sources; the second source

is the location specified by Operand 1. Instructions using this

addressing mode are three bytes in length.

Examples

Destination Indexed Source Immediate

The result of an instruction using this addressing mode is

placed within either the RAM memory space or the register

space. Operand 1 is added to the X register to form the

address of the result. The source for the instruction is Operand

2, which is an immediate value. 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 three bytes in length.

Examples

Destination Direct Source Direct

The result of an instruction using this addressing mode is

placed within the RAM memory. Operand 1 is the address of

the result. Operand 2 is an address that points to a location in

the RAM memory that is the source for the instruction. This

addressing mode is only valid on the MOV instruction. The

instruction using this addressing mode is three bytes in length.

Example

Source Indirect Post Increment

The result of an instruction using this addressing mode is

placed in the Accumulator. Operand 1 is an address pointing

to a location within the memory space, which contains an

address (the indirect address) for the source of the instruction.

The indirect address is incremented as part of the instruction

execution. This addressing mode is only valid on the MVI

instruction. The instruction using this addressing mode is two

bytes in length. Refer to the PSoC Designer: Assembly

Language User Guide for further details on MVI instruction.

Example

Destination Indirect Post Increment

The result of an instruction using this addressing mode is

placed within the memory space. Operand 1 is an address

pointing to a location within the memory space, which contains

an address (the indirect address) for the destination of the

instruction. The indirect address is incremented as part of the

instruction execution. The source for the instruction is the

Accumulator. This addressing mode is only valid on the MVI

instruction. The instruction using this addressing mode is two

bytes in length.

Example

Table 14.Destination Direct Source Immediate

Opcode Operand 1 Operand 2

Instruction Destination Address Immediate Value

ADD [7], 5 ;In this case, value in the memory location

at address 7 is added to the immediate

value of 5, and the result is placed in the

memory location at address 7.

MOV REG[8], 6 ;In this case, the immediate value of 6 is

moved into the register space location at

address 8.

Table 15.Destination Indexed Source Immediate

Opcode Operand 1 Operand 2

Instruction Destination Index Immediate Value

ADD [X+7], 5 ;In this case, the value in the mem-

ory location at address X+7 is

added with the immediate value of

5, and the result is placed in the

memory location at address X+7.

MOV REG[X+8], 6 ;In this case, the immediate value of

6 is moved into the location in the

Table 16.Destination Direct Source Direct

Opcode Operand 1 Operand 2

Instruction Destination Address Source Address

MOV [7], [8] ;In this case, the value in the memory location

at address 8 is moved to the memory location

at address 7.

Table 17.Source Indirect Post Increment

Opcode Operand 1

Instruction Source Address Address

MVI A, [8] ;In this case, the value in the memory location

at address 8 is an indirect address. The

memory location pointed to by the Indirect

address is moved into the Accumulator. The

indirect address is then incremented.

Table 18.Destination Indirect Post Increment

Opcode Operand 1

Instruction Destination Address Address

MVI [8], A ;In this case, the value in the memory

location at address 8 is an indi-

rect;address. The Accumulator is moved

into the memory location pointed to by

the indirect address. The indirect

address is then incremented.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 61 62

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