Instruction List (2)

S1C63000 Core CPU

Classification

4-bit data transfer

Mnemonic

Basic function

Opcode

Operand

 

LD

%A,%A

A ← A

 

%A,%B

A ← B

 

%A,%F

A ← F

 

%A,imm4

A ← imm4

 

%A,[%X]

A ← [X]

 

%A,[%X]+

A ← [X], X ← X+1

 

%A,[%Y]

A ← [Y]

 

%A,[%Y]+

A ← [Y], Y ← Y+1

LD

%B,%A

B ← A

 

%B,%B

B ← B

 

%B,imm4

B ← imm4

 

%B,[%X]

B ← [X]

 

%B,[%X]+

B ← [X], X ← X+1

 

%B,[%Y]

B ← [Y]

 

%B,[%Y]+

B ← [Y], Y ← Y+1

LD

%F,%A

F ← A

 

%F,imm4

F ← imm4

LD

[%X],%A

[X] ← A

 

[%X],%B

[X] ← B

 

[%X],imm4

[X] ← imm4

 

[%X],[%Y]

[X] ← [Y]

 

[%X],[%Y]+

[X] ← [Y], Y ← Y+1

 

[%X]+,%A

[X] ← A, X ← X+1

 

[%X]+,%B

[X] ← B, X ← X+1

 

[%X]+,imm4

[X] ← imm4, X ← X+1

 

[%X]+,[%Y]

[X] ← [Y], X ← X+1

 

[%X]+,[%Y]+

[X] ← [Y], X ← X+1, Y ← Y+1

LD

[%Y],%A

[Y] ← A

 

[%Y],%B

[Y] ← B

 

[%Y],imm4

[Y] ← imm4

 

[%Y],[%X]

[Y] ← [X]

 

[%Y],[%X]+

[Y] ← [X], X ← X+1

 

[%Y]+,%A

[Y] ← A, Y ← Y+1

 

[%Y]+,%B

[Y] ← B, Y ← Y+1

 

[%Y]+,imm4

[Y] ← imm4, Y ← Y+1

 

[%Y]+,[%X]

[Y] ← [X], Y ← Y+1

 

[%Y]+,[%X]+

[Y] ← [X], Y ← Y+1, X ← X+1

Extended function

 

Flags

 

Symbol

(when "LDB

Clk

E

I

C

Z

%EXT, imm8" is executed)

 

–

1

0

–

–

–

–

–

1

0

–

–

–

–

–

1

0

–

–

–

–

–

1

0

–

–

–

–

A ← [00imm8]

1

0

–

–

–

–

–

1

0

–

–

–

–

A ← [FFimm8]

1

0

–

–

–

–

–

1

0

–

–

–

–

–

1

0

–

–

–

–

–

1

0

–

–

–

–

–

1

0

–

–

–

–

B ← [00imm8]

1

0

–

–

–

–

–

1

0

–

–

–

–

B ← [FFimm8]

1

0

–

–

–

–

–

1

0

–

–

–

–

–

1

↔ ↔ ↔ ↔

–

–

1

↔ ↔ ↔ ↔

–

[00imm8] ← A

1

0

–

–

–

–

[00imm8] ← B

1

0

–

–

–

–

[00imm8] ← imm4

1

0

–

–

–

–

–

2

0

–

–

–

–

–

2

0

–

–

–

–

–

1

0

–

–

–

–

–

1

0

–

–

–

–

–

1

0

–

–

–

–

–

2

0

–

–

–

–

–

2

0

–

–

–

–

[FFimm8] ← A

1

0

–

–

–

–

[FFimm8] ← B

1

0

–

–

–

–

[FFimm8] ← imm4

1

0

–

–

–

–

–

2

0

–

–

–

–

–

2

0

–

–

–

–

–

1

0

–

–

–

–

–

1

0

–

–

–

–

–

1

0

–

–

–

–

–

2

0

–

–

–

–

–

2

0

–

–

–

–

Remarks