; This part of the code file shows each of the possible combinations of lines
; that are available in an assembly language program

label1:   opcode   operand   ;  a comment
# comment comment comment Note that a comment can start with either # or ;
labelonly:
; comment
label: opcodeonly
opcode andoperand
justopcode

; Here are the NPCI opcodes along with their value and a brief description
; Most of these operands work with the stack so terms like TOS (top of stack)
; and 2nd, 3rd etc are used to desribe the elements in the stack. Also in
; NPCI any elements in the stack used by the instruction are always removed
; and sometimes new stuff is added. This operation is called a replace
; Since the original stack elements are always removed, there is no need to
; further reference this fact the descriptions below. Note that OW is used as
; an abbreviation for OtherWise. Also with so many binary operators that RTTE
; is used to represent the action of Replacing the Top Two Elements of the 
;stack.

	assign		; Assigns the value in the 2nd to the address in TOS
	add		; RTTE with sum
	equal		; RTTE with 1 if equal, 0 OW
	notequal	; RTTE with 1 if not equal, 0 OW 
	sub		; Subtracts TOS from 2nd replacing with result
	and		; RTTE with bitwise and 
	or		; RTTE with bitwise or
	xor		; RTTE with bitwise xor
	lor		; RTTE with logical or, 1 if either TTE true, 0 OW
	land		; RTTE with logical and, 1 if both TTE true, 0 OW
	return
	call
	shiftl		; RTTE with 2nd shifted TOS bits to the left
	shiftr		; RTTE with  2nd shifted TOS bits to the right
	greater		; RTTE with 1 if 2nd > TOS, 0 OW
	less		; RTTE with 1 if 2nd < TOS, 0 OW
	greateq		; RTTE with 1 if 2nd >= TOS, 0 OW
	lesseq		; RTTE with 1 if 2nd <= TOS, 0 OW
	bitval
	bitassign
	not		; Replace TOS with 1 if TOS is 0, 0 OW
	table		; Get a table entry from program memory address in TOS
	getval		; Replace TOS with value located at address in TOS
	addfp		; Adds the value of the frame pointer (FP) to TOS
	intmode		; Switches stack to 16 bit mode
	bytemode	; Switches stack to 8 bit mode
	link		; Pushes old FP on stack and points FP to TOS
	unlink		; Restores old FP by pulling FP from TOS
	movetos		; Add the value of TOS to the stack pointer moving TOS
	callasm		; Calls the assmebly routine whose index is at TOS
	push		; Pushes a value from 0-62 onto the stack
	pushbyte	; Pushed a value from 63-255 onto the stack
	cjump		; Conditional Jump. Jumps to operand address if TOS=0
	jump		; Jump. Jumps to operand address