00010 * USER variable definitions for BIF
00020 * BIF Copyright 1989 Joel Matthew Rees (see BIF/ASM)
00100 * INCLUDE THIS BEFORE SETTING DPR
00110 * ORG used here for offsets only
00120 	ORG 0
00130 US0	RMB 2	base of data stack (6809 U)
00140 UR0	RMB 2	base of control stack (6809 S)
00150 UTIB	RMB 2	terminal buffer
00160 	RMB 2	width is not used
00170 UWARN	RMB 2	disk on line?
00180 UFENCE	RMB 2	for FORGET
00190 UDP	RMB 2	first available byte in dictionary
00200 UROOT	RMB 2	current dictionary root pointer
00210 UDROOT	RMB 2	defining dictionary root pointer
00220 UCURR	RMB 2	NFA of last definition
00230 UPAD	RMB 2	text, numeric scratch buffers
00240 UWP	RMB 2	WORD buffer pointer
00250 UCOLUM	RMB 2	columns per lineon terminal
00260 UFIRST	RMB 2	byte of buffers
00270 ULIMIT	RMB 2	of buffer ram
00280 UBASE	RMB 2	of numeric conversion
00290 UCSP	RMB 2	stack pointer check
00300 UHLD	RMB 2	character mark in pad
00310 UUSE	RMB 2	Least Recently Used buffer
00320 UPREV	RMB 2	Most Recently Used buffer
00330 UBS	RMB 2	BackSpace
00340 UIN	RMB 2	input buffer offset
00350 UOUT	RMB 2	output buffer offset (cursor)
00360 UBLK	RMB 2	active disc block
00370 UEBLK	RMB 2	active edit block
00380 USCR	RMB 2	active disc screen
00390 URNUM	RMB 2	editing offset (cursor)
00400 UOFFS	RMB 2	to active drive
00410 USTATE	RMB 2	of compiler
00420 UDPL	RMB 2	output Decimal Point Location
00430 UFLD	RMB 2	output field width
00440 UVMK	RMB 2	stack mark and function for VISIT
00450 UFORE	RMB 2	FOREWARD reference block link
00460 UDPR	RMB 2	Direct Page Emulator for Assembler
00990 	RMB 16	8 spares 
01000 UEND	EQU *