DPU

A Dumb Virtual CPU

INSTRUCTION REFERENCE TABLE

Code	Sym	Description	In 1	In 2	In 3
0000	NOP	does nothing	N/A	N/A	N/A
0001	JMP	jumps to a specified address	ADDR pt-1	ADDR pt-2	N/A
0010	RGS	sets a register	REG, 0-3 is A-D	VAL pt-1	VAL pt-2
0011	PSH	pushes the registers to the stack and writes the next address to REG D	N/A	N/A	N/A
0100	POP	pops the register values from the stack and overwrites the registers	N/A	N/A	N/A
0101	INP	if there is an input, reads it from it's buffer into a register	Input Buf #	REG, 0-3 is A-D	N/A
0110	OUT	push a register value into an output buffer	Output Buf #	REG, 0-3 is A-D	N/A
0111	RAA	adds a value to the specified register and skips the next line if no carry	REG, 0-3 is A-D	VAL pt-1	VAL pt-2