;*****************************************************
;*
;*	User Data Area - The User Data Area is an 
;*	extension of the process descriptor but it 
;*	travels with the user.  It contains info 
;*	that is needed only while in context.
;*
;*	While in the operating system, The Extra
;*	Segment register points to the beginning
;*	of the User Data Area.
;*
;*****************************************************


	eseg
	org	0

u_dparam	rw	1	; arg to dispatch

;	this area overlays part of BDOS
u_dma_ofst	rw	1	; BDOS dma offset
u_dma_seg	rw	1	; BDOS dma segment
u_func		rb	1	; actual function number
u_searchl	rb	1	; BDOS search length 
u_searcha	rw	1	; BDOS search FCB offset
u_searchabase	rw	1	; BDOS search user's segment
u_dcnt		rw	1	; BDOS directory count
u_dblk		rw	1	; BDOS directory block #
u_error_mode	rb	1	; BDOS error mode
u_mult_cnt	rb	1	; BDOS multi-sector count
u_df_password	rb	8	; BDOS default password
u_pd_cnt	rb	1	; BDOS process count
uda_ovl_len	equ	(offset $)-(offset u_dma_ofst)
;	end of overlay area


u_in_int	rb	1
u_sp		rw	1	; save register area
u_ss		rw	1
u_ax		rw	1
u_bx		rw	1
u_cx		rw	1
u_dx		rw	1
u_di		rw	1
u_si		rw	1
u_bp		rw	1
u_wrkseg	rw	1	; curr seg addr of buf
u_retseg	rw	1	; usr ES return
u_ds_sav	rw	1	;\
u_stack_sp	rw	1	; usr stack segment
u_stack_ss	rw	1	; usr stack pointer
u_ivectors	rw	4	; save int 0,1
u_ivec87_of     rw      1       ; NDP interrupt vector
u_ivec87_sg	rw	1	; for exception handling
u_ivectors2	rw	4	; save int 3,4
u_es_sav	rw	1	; > Used during interrupts
u_flag_sav	rw	1	;/

u_initcs	rw	1
u_initds	rw	1
u_inites	rw	1
u_initss	rw	1
u_os_ip		rw	1	; O.S. vec save
u_os_cs		rw	1
u_debug_ip	rw	1	; RTS,Debug Vector Save
u_debug_cs	rw	1
u_insys		rb	1	; # times through user_entry
u_stat_sav	rb	1	; used during interrupts
u_conccb	rw	1	; default console's CCB addr
u_lstccb	rw	1	; default list devices CCB addr
u_delim		rb	1	; delimiter for user function 9
u_ioexerr       rb      1       ; extended error ret codes for bdos
 
	org	ulen
u_8087		rw	47	; 8087 save area
				; see dispatcher, loader and terminate