bufseg		dseg	word public
next_buffer	equ	word ptr .0
buffer_length	equ	word ptr .2
margin		equ	0	;needed in files
memsize		equ 	word ptr .4
toptop		equ	word ptr .6
topbot		equ	word ptr .8
bottop		equ	word ptr .10
botbot		equ	word ptr .12
linecount	equ	word ptr .14
linesbefore	equ	word ptr .16
buffer_modified	equ	byte ptr .18

;****************************************************************************
; marks contains the marks, which is a count of characters from the beginning
; of the file.  There are permanent (global) marks and temporary (local)
; marks.  The permanent marks are accessible at all times, while the
; temporary marks are accessible only while they are on the top of the stack.
; There are a These marks are defined below. The actual number of temporary
; marks is given by the value of [temp_mark_count]-[temp_mark_base]. As you
; can see, this is initially zero.  The number of marks is adjusted by
; calling stack_marks.
;****************************************************************************

MAX_MARKS	equ	50
temp_mark_base	equ	byte ptr .19		;first temporary mark
temp_mark_count	equ	byte ptr .20		;total number of temporary marks
perm_mark_count	equ	byte ptr .21		;number of permanent marks
split_mark	equ	word ptr .22		;mark used for split screen.
mark_offset	equ	word ptr .24
marks_sp	equ	word ptr mark_offset+max_marks+max_marks
bufseg_size	equ	(offset marks_sp)+max_marks+2