yados.def

SCALL	macro
	jsr	0xd934
	.db	\1
	endm

SGETMNT		equ	0	; Get Mount Table Entry
SGETDEV		equ	1	; Get Device Table Entry
SSETUP		equ	2	; Pre-command setup
SEXECMD		equ	3	; do command
SREGDRV		equ	4	; Register Driver
SDWSETUP	equ	5	; DriveWire Setup (device select)
SDWREAD		equ	6	; DriveWire Read
SDWWRITE	equ	7	; DriveWire Write
SDWTRANS	equ	8	; DriveWire Transaction

	

;;; DSKCON Equates
DCSEC          equ       $ED                 DSKCON Sector
DCSTAT         equ       $F0                 DSKCON Status


;;; This is a new table of Mounts. It is parallel to the FAT tables,
;;; both tables are indexed with DCDRV
	org 	0
MNTFLG	rmb	1	 ; Mount Flags (<>0 is mounted)
	;; bits 0-2 : index to Device table
	;; bits 3-6 : partition or minor number
	;; bit  7   : valid mount flag
MNTDEV	rmb	1	 ; Major No.
MNTSUB	rmb	1	 ; sub-device no
MNTOFF	rmb	3	 ; Paritition Offset
MNTZ	equ     *        ; size of this structure


;;; This is the Device table - stores the less dynamic
;;; data about physical setup.
        org     0
DEVDRV	rmb	1	; Driver No / MPI slot
	;; bits 0-3 : index to driver table
	;; bits 4-5 : MPI setting
	;; bit  7   : valid flag
DEVADD	rmb	1	; Hardware Base Address ( msb assumed 0xff )
DEVRES	rmb	1	; reserved
DEVZ	equ	*	; size of this structure
	

;;; These are really just defines for
;;; *some* of regular DSKCON's opcodes
;;; they are a HDB legacy when every driver
;;; had it's own opcodes.
SRBLK	 equ	   2        ; System right block
SWBLK	 equ	   3        ; System write block


;; This is a block of memory used by the various
;; drivers for temporary storage.

         org       $F3
VCMD     rmb       1        ; SCSI/IDE unit command
VAD0     rmb       1        ; L.U.N. / sector (hi-byte)
VAD1     rmb       2        ; Sector (lo-word)
VBLKS    rmb       2        ; Block count / options
VEXT     rmb       4        ; Reserved 10 byte SCSI commands
RAMFLG	 rmb	   1        ; used as a flag for bouncing down
RETRY	 rmb	   1	    ; used as temp buffer BAD!!!

         IFDEF     DRAGON
         org       $13F
         ELSE
         org       $149
         ENDC
MPISTRT  rmb	   1	    ; startup MPI setting
TEMP1	 rmb	   2	    ; temp storage
TEMP2	 rmb	   2	    ; temp storage
EXTDRV0  rmb	   2	    ; external driver 0
EXTDRV1	 rmb	   2	    ; external driver 1

;;; Some temporary working variable

TEMP3	 equ	   0x1d1    ; storage for dwext.asm's longjump
TEMP4	 equ	   0x1d3    ; storage for dwext.asm