PAGE
;	Physical data buffer address ((DMAADR) or HSTBUF)
;	Do not change the order of these without looking in the code.
	ALIGN	2
BUFADR:	DW	HSTBUF		;Lower 16 bits (least, middle)
BUFSEG:	DW	BioSeg		;Buffer's segment

;	User data buffer address

DMAADR:	DW	HSTBUF		;Lower 16 bits (least, middle)
DMASEG:	DW	BioSeg		;User's segment
	SPACE	4,10
;	BIOS blocking / deblocking flags.

HSTACT:	DB	0		;host active flag
HSTWRT:	DB	0		;host written flag
UNACNT:	DB	0		;unalloc rec CNT
UNATRK:	DW	0		;Track
UNASEC:	DB	255		;Sector
LOGSEC	DB	0		;Logical sector
	SPACE	4,10
;	Area for storage of hard disk cylinders.
	if	DISK2
HDCYL:
	ECHO	NOHRD
	DB	-1
	ENDM
	SPACE	4,10
;
; Bad spot table:
;
; 	0 	Drive
; 	1 	Bad cylinder
; 	2 	Bad head
; 	3 	Bad sector
; 	4 	Alternate cylinder
; 	5 	Alternate head
; 	6 	Alternate sector
;

HDPTR:	DW	HDBAD		;Pointer to end of bad map
	endif