Instruction Classification

Table 4–11. Instruction Classification (Continued)

Class Sub-

Description

Class

 

 

 

4

Register and memory reference

 

 

A

Memory references that use Rx; all addressing modes available

 

 

B

Memory references with short constant fields operating on Rx

 

 

C

Memory references with long constant fields operating on Rx in errata, has not been connected

 

 

D

Memory references with R5 operating on Rx

 

 

5

General mMemory reference instructions

 

 

6

I/O port and memory reference instructions

 

 

A

Port/memory reference

 

 

B

Port/accumulator reference

 

 

7

Program control instructions

 

 

A

Macro call instructions

 

 

B

Conditional and unconditional jump instructions

 

 

C

Conditional and unconditional call instructions

 

 

8

Logical bit instructions

 

 

A

Logical flag instructions

 

 

B

Test status instructions

 

 

9

Miscellaneous instructions

 

 

A

Filter instructions

 

 

B

Miscellaneous short constant instructions

 

 

C

Accumulator address instructions

 

 

D

Other instructions

 

 

4-24

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Texas Instruments MSP50C6xx manual Class Sub Description