Instructions

Opcode	Mnemonic	Effect
00	BEL	Play a tone; the frequency is derived from A
01	NOP	Do nothing
02	SWAP	Exchange contents of DP and Accumulator
05	NUM	Display value in A as decimal number
06	NUMX	Display value in A as hexdecimal number
07	JMP (arg)	Unconditional jump; next byte is loaded into IP
08	CHAR	Print ASCII char based on A
09	NEG	Sets A to (256 - A)
10	SETA (arg)	Set A to next value after this instruction
11	SETP (arg)	Set DP to next value after this instruction
14	ADDA (arg)	Adds next value after this instruction to A
15	ADDP (arg)	Adds next value after this instruction to DP
16	SUBA (arg)	Subtracts next value after this instruction from A
17	SUBP (arg)	Subtracts next value after this instruction from DP
20	LOADA [arg]	Load value from specified memory location into A
21	LOADP [arg]	Load value from specified memory location into DP
22	STORA [arg]	Store contents of A into specified memory location
23	STORP [arg]	Store contents of DP into specified memory location
24	LADDA [arg]	Adds value from specified memory location to A
25	LADDP [arg]	Adds value from specified memory location to DP
26	LSUBA [arg]	Subtracts value at specified memory location from A
27	LSUBP [arg]	Subtracts value at specified memory location from DP
40	GET	Get value from location specified by DP into A
42	PUT	Put contents of A into location specified by DP
44	GADD	Get value from location specified by DP and add to A
46	GSUB	Get value from location specified by DP and subtract from A
70	JZ (arg)	Jump if A is zero; otherwise continue as usual
71	JNZ (arg)	Jump if A is not zero; otherwise continue as usual
74	JZP (arg)	Jump if 0 or positive (0 <= A < 128); otherwise continue as usual
75	JP (arg)	Jump if positive (1 <= A < 128); otherwise continue as usual
94	INCA	Add 1 to A
95	INCP	Add 1 to DP
96	DECA	Subtract 1 from A
97	DECP	Subtract 1 from DP

All other opcodes are equivalent to HLT (the halt instruction which stops the processor).