Gitorious

8989312 by David Griffiths at 2010-08-23	1	B E T A B L O C K E R (C) 2010 Dave Griffiths
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	4	Betablocker is a 8 bit processor with 256 bytes of memory. It's capable only of playing music, and it's threads of execution (which share the same memory) never crash or cease execution.
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	6	You write into memory in order to edit programs literally as they are running.
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	8	Instruction Set
41deb63 by David Griffiths at 2010-08-23	9
	10	Instr Oper Push Pop Description
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	12	NOP 0 0 0 Does nothing
	13	ORG 0 0 0 Program start
	14	EQU 0 1 2 Push 1 if top 2 items in stack are equal, otherwise 0
	15	JMP 1 0 0 Sets program counter
	16	JMP 1 0 0 If top is 0, sets program counter
	17	PSHL 1 1 0 Pushes literal to stack
	18	PSH 1 1 0 Pushes value at this address
	19	PSHI 1 1 0 Indirect push address at address
	20	POP 1 0 1 Pop stack to address
	21	POPI 1 0 1 Indrect pop stack to address at address
	22	ADD 0 1 2 Adds top 2 items and pushes result
	23	SUB 0 1 2 Subtracts top 2 items and pushes result
	24	INC 0 1 1 Increments top of stack
	25	DEC 0 1 1 Decrements top of stack
	26	AND 0 1 2 Pushes bitwise AND of top two stack items
	27	OR 0 1 2 Pushes bitwise OR of top two stack items
	28	XOR 0 1 2 Pushes bitwise XOR of top two stack items
	29	NOT 0 1 1 Pushes bitwise NOT of tow stack item
	30	ROR 1 1 1 Bitwise right rotate top of stack
	31	ROL 1 1 1 Bitwise left rotate top of stack
	32	PIP 1 0 0 Increments addr in-place (push increment pop)
	33	PDP 1 0 0 Decrements addr in-place (push decrement pop)
	34	DUP 0 1 0 Duplicates top of stack
	35	NOTE 0 0 1 Plays current instrument at pitch from top of stack
	36	VOX 0 0 1 Changes current instrument to top of stack