Binary	Mnemonic	Instruction	Meaning
0000xxxxxxxxxxxx	LODD	Load Direct	ac <- mem[x]
0001xxxxxxxxxxxx	STOD	Store Direct	mem[x] <- mem[x]
0010xxxxxxxxxxxx	ADDD	Add Direct	ac <- ac + mem[x]
0011xxxxxxxxxxxx	SUBD	Subtract Direct	ac <- ac - mem[x]
0100xxxxxxxxxxxx	JPOS	Jump positive	if ac > 0 then pc <- x
0101xxxxxxxxxxxx	JZER	Jump zero	if ac = 0 then pc <- x
0110xxxxxxxxxxxx	JUMP	Jump always	pc <- x
0111xxxxxxxxxxxx	LODC	Load constant	ac <- x
1000xxxxxxxxxxxx	LODL	Load local	ac <- mem[sp + x]
1001xxxxxxxxxxxx	STOL	Store local	mem[sp + x] <- ac
1010xxxxxxxxxxxx	ADDL	Add local	ac = ac + mem[sp + x]
1011xxxxxxxxxxxx	SUBL	Subtract local	ac = ac - mem[sp + x]
1100xxxxxxxxxxxx	JNEG	Jump negative	if ac < 0 then pc <- x
1101xxxxxxxxxxxx	JNZE	Jump nonzero	if ac != 0 then pc <- x
1110xxxxxxxxxxxx	CALL	Call subroutine	sp <- sp-1; mem[sp] <- pc; pc <- x
1111000000000000	PUSHI	Push Indirect	sp <- sp-1; mem[sp] <- mem[ac]
1111000100000000	POPI	Pop Indirect	mem[ac] <- mem[sp]; sp <- sp+1;
1111001000000000	PUSH	Push on stack	sp <- sp-1; mem[sp] <- ac
1111010000000000	POP	Pop off stack	ac <- mem[sp]; sp <- sp+1;
1111100000000000	RET	Return from subroutine	pc <- mem[sp]; sp <- sp+1;
1111101000000000	SWAP	Swap ac and sp	tmp <- ac; ac <- sp; sp <- tmp
11111100yyyyyyyy	INCSP	Increment sp	sp <- sp + y
11111110yyyyyyyy	DECSP	Decrement sp	sp <- sp - y