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Instruction List (12)
S1C63000 Core CPU
Opcode
LDB
LDB
LDB
LDB
LDB
LDB
LDB
ADD
CMP
INC
DEC
PUSH
POP
Operand
%BA,imm8
%BA,[%X]+
%BA,[%Y]+
%XL,%BA
%XL,imm8
%XH,%BA
%YL,%BA
%YL,imm8
%YH,%BA
%EXT,%BA
%EXT,imm8
%SP1,%BA
%SP2,%BA
[%X]+,%BA
[%X]+,imm8
[%Y]+,%BA
%X,%BA
%X,sign8
%Y,%BA
%Y,sign8
%X,imm8
%Y,imm8
%SP1
%SP2
%SP1
%SP2
%A
%B
%F
%X
%Y
%A
%B
%F
%X
%Y
Basic function
BA ← imm8
A ← [X], B ← [X+1], X ← X+2
A ← [Y], B ← [Y+1], Y ← Y+2
XL ← BA
XL ← imm8
XH ← BA
YL ← BA
YL ← imm8
YH ← BA
EXT ← BA
EXT ← imm8
SP1 ← BA
SP2 ← BA
[X] ← A, [X+1] ← B, X ← X+2
[X] ← i3~0, [X+1] ← i7~4, X ← X+2
[Y] ← A, [Y+1] ← B, Y ← Y+2
X ← X+BA
X ← X+sign8 (sign8=-128~127)
Y ← Y+BA
Y ← Y+sign8 (sign8=-128~127)
X-imm8 (imm8=0~255)
Y-imm8 (imm8=0~255)
SP1 ← SP1+1
SP2 ← SP2+1
SP1 ← SP1-1
SP2 ← SP2-1
[SP2-1] ← A, SP2 ← SP2-1
[SP2-1] ← B, SP2 ← SP2-1
[SP2-1] ← F, SP2 ← SP2-1
([(SP1-1)∗4+3]~[(SP1-1)∗4]) ← X, SP1 ← SP1-1
([(SP1-1)∗4+3]~[(SP1-1)∗4]) ← Y, SP1 ← SP1-1
A ← [SP2], SP2 ← SP2+1
B ← [SP2], SP2 ← SP2+1
F ← [SP2], SP2 ← SP2+1
X ← ([SP1∗4+3]~[SP1∗4]), SP1 ← SP1+1
Y ← ([SP1∗4+3]~[SP1∗4]), SP1 ← SP1+1
Extended function
(when "LDB %EXT, imm8" is executed)
–
–
–
–
X ← imm16 (imm8 set in EXT is used as high-order 8 bits)
–
–
Y ← imm16 (imm8 set in EXT is used as high-order 8 bits)
–
–
–
–
–
–
–
–
–
X ← X+imm16 (imm8 set in EXT is used as high-order 8 bits)
–
Y ← Y+imm16 (imm8 set in EXT is used as high-order 8 bits)
X-imm16 (imm8 set in EXT is used as high-order 8 bits)
Y-imm16 (imm8 set in EXT is used as high-order 8 bits)
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Symbol
●,@h
–
–
–
●,@l
–
–
●,@l
–
–
●,@l,@h
@rh,@xh
–
–
–
●,@l,@h
–
–
●,@l
–
●,@l
●,@l
●,@l
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Clk
1
2
2
1
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
C
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
↔
↔
–
–
–
–
–
–
–
–
–
–
–
↔
–
–
Z
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
↔
↔
↔
↔
↔
↔
↔
↔
↔
–
–
–
–
–
–
–
–
↔
–
–
E
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
↔
0
0
I
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
↔
–
–
Mnemonic
Classification
8/16-bit
transfer and
operation
Stack
operation
Flags
Remarks