CSC103 Basic Instructions

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Annotated Simulator

CSC103 Annotated Simulator.png

Basic Instructions for the Pocessor

Note "-C" means Constant

ADD   Add to Acc      	      ADD-C   Add C to Acc
SUB   Sub from Acc    	      SUB-C   Sub C from Acc
AND   And with Acc    	      AND-C   And C with Acc
OR    Or with Acc     	      OR-C    Or  C with Acc
NOT   invert Acc      	      LOD-C   Load C in	Acc
SHL   Shift left Acc  	      ADD-I   Add-indirect
SHR   Shift right Acc 	      SUB-I   Sub-indirect
INC   Increment Acc   	      AND-I   And-indirect
DEC   Decrement Acc   	      OR-I    Or-indirect
LOD   Load Acc from mem      LOD-I   Load indirect
HLT   Stop!   	      	       STO-I   Store indirect
JMP   Jmp to address  	      JMP-I   Jmp indirect
JMZ   Jmp if Acc=0    	      JMZ-I   Jmp zero indirect
JMN   Jmp if negative 	      JMN-I   Jmp negative indirect
JMF   Jmp on flag            JMF-I   Jmp flag indirect
                             STO     Store Acc in mem