Simple Computer 2
Registers
Stack
IP
0
R0
0
R1
0
R2
0
R3
0
CS
0
DS
0
SP
0
BR
0
Instruction Decoder
ALU
Z
N
O
Start
Step
Reset
Clear
Save
Load
Speed: slow
fast
Memory Store
Memory Stack
Op-Codes
MOV Rx, xx
;immediate
MOV Rx, [xx]
;direct
MOV Rx, [[xx]]
;indirect
MOV Rx, Ry
;register
MOV [xx], Rx
;or Store i.e. STO Rx, [xx]
ADD, SUB, MUL, DIV, RDR
INC Rx, DEC Rx
JMP xx (or relative +xx, or -xx )
JNZ Rx, xx
JEZ Rx, xx
JN Rx, xx
JP Rx, xx
PSH Rx, POP Rx
CALL xx
RET
STP
Insert
Clear
Delete
Cancel
Simple Computer 2
Simple Computer 2