Interpret Up and Running

Some social duties have intervened on my TTA8 work. Today was the first opportunity to spend time on the project.

The Interpreter is now working but it is much bigger (slower) than expected.

Here is the simple version:

INTERP		IP	SAVE IP
		POINTER	
		IP	INC IC
		REGP	
		_1	
		REGQ	
		ADD	
		IP	
		_246	^POINTER
		JMP	

Here is the Paged version:

INTERP	8	IP	FETCH PAGE
	9	FETCH	
	10	_240	^PAGE
	11	DEPOSIT	
	12	_INT0	NEXT
	13	TX	(RETURN ADDR)
	14	_232	^TX
	15	POINTER	
	16	_244	^FETCH
	17	JMP	
_INT0	18	IP	ADVANCE IP
	19	REGP	
	20	_1	
	21	REGQ	
	22	ADD	FETCH ADDRESS
	23	FETCH	
	24	ADD	ADVANCE IP
	25	REGP	
	26	ADD	
	27	IP	
	28	_241	^RETURN
	29	DEPOSIT	
	30	_INT1	NEXT
	31	TX	
	32	_244	^FETCH
	33	JMP	
_INT1	34	DECODE	CALL DECODE
	35	JMP	

Note the Paged Interpreter also calls Decode.

The Counter Program

The counter progrm first sets up the Interpreter and only uses Inline (to revert bck to Machine Code):

Here is the Interpreter (including Inline and Decode):

The next Interpreter instruction to write is "JMP_ADR". This will allow jumps to other pages (i.e. it sets the current Interpreter page (PP) and address (IP)). Well actually it has been written just not tested:

AlanX