Arithmetic instructions

Y-Bus control command

NOP

Operation content

The Y-Bus command is unprocessed.

Descriptive formula

label: NOP

Instruction code

31

30

19

18

17

0

0

0

−

−

−

−

−

−

−

−

−

−

0

0

0

−

−

−

−

−

−

−

−

−

−

−

−

−

−

−

−

−

flag

It doesn't change.

remarks

none.

MOV [s], Y

Operation content

Data is transferred from the data RAM at the address indicated by [CTx (x = 0 to 3)] to [RY].

Descriptive formula

label: MOV [Source RAM], Y

Source RAM = M0 to M3, MC0 to MC3

Instruction code

31	30											19	18	17	16	15	14														0
0	0	−	−	−	−	−	−	−	−	−	−	1	0	0	x	x	x	−	−	−	−	−	−	−	−	−	−	−	−	−	−

Bit data			Addition mode choice
bit16	bit15	bit14
0	0	0	DATA RAM 0 → [RY]
0	0	1	DATA RAM1 → [RY]
0	1	0	DATA RAM2 → [RY]
0	1	1	DATA RAM3 → [RY]
1	0	0	DATA RAM0 → [RY], CT0 ++
1	0	1	DATA RAM1 → [RY], CT1 ++
1	1	0	DATA RAM2 → [RY], CT2 ++
1	1	1	DATA RAM3 → [RY], CT3 ++

flag

RY; It will be the data selected in the selection.

It is incremented only when CTx (x = 0 to 3); b22 = 1. It does not change when b22 = 0.

remarks

[Mx (x = 0 to 3)] specifies DATA RAMx (x0 to 3).

[MCx (x = 0 to 3)] specifies DATA RAMx (x0 to 3), and after transfer, increments [CTx (x = 0 to 3)].

CLR A

Operation content

Clear the values of [ACH] and [ACL] to 0.

Descriptive formula

label: CLR A

Instruction code

31	30											19	18	17																	0
0	0	−	−	−	−	−	−	−	−	−	−	0	0	1	−	−	−	−	−	−	−	−	−	−	−	−	−	−	−	−	−

flag

ACH; 0.

ACL; becomes 0.

remarks

none.

MOV ALU, A

Operation content

[ALU] Transfers the value of the upper 16 bits to [ACH], and transfers the value of the lower 32 bits of [ALU] to [ACL].

Descriptive formula

label: MOV ALU, A

Instruction code

31	30											19	18	17																	0
0	0	−	−	−	−	−	−	−	−	−	−	0	1	0	−	−	−	−	−	−	−	−	−	−	−	−	−	−	−	−	−

flag

ACH; ALU Higher 16-bit data.

ACL; ALU lower 32bit data.

remarks

none.

MOV [s], A

Operation content

Data is transferred from the data RAM at the address indicated by [CTx (x = 0 to 3)] to [ACL]. Also, the value of [ACH] changes with the sign extension of [ACL].

Descriptive formula

label: MOV [Source RAM], A

Sourse RAM = M0 to M3, MC0 to MC3

Instruction code

31	30											19	18	17	16	15	14														0
0	0	−	−	−	−	−	−	−	−	−	−	0	1	1	x	x	x	−	−	−	−	−	−	−	−	−	−	−	−	−	−

Bit data			Addition mode choice
bit16	bit15	bit14
0	0	0	DATA RAM0 → [ACL]
0	0	1	DATA RAM1 → [ACL]
0	1	0	DATA RAM2 → [ACL]
0	1	1	DATA RAM3 → [ACL]
1	0	0	DATA RAM0 → [ACL], CT0 ++
1	0	1	DATA RAM1 → [ACL], CT1 ++
1	1	0	DATA RAM2 → [ACL], CT2 ++
1	1	1	DATA RAM3 → [ACL], CT3 ++

flag

ACL; Will be the data selected in the choices.

ACH; It changes with the sign extension of [ACL].

It is incremented only when CTx (x = 0 to 3); b16 = 1. It does not change when b16 = 0.

remarks

[Mx (x = 0 to 3)] specifies DATA RAMx (x0 to 3).

[MCx (x = 0 to 3)] specifies DATA RAMx (x0 to 3), and after transfer, increments [CTx (x = 0 to 3)].