;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 .Title	'MDST24.Z80 / XL-M180 Floppy Drive Spec Tables / 27jan88'
 .Sbttl	'(C) Copyright 1988 By W. Brimhall / Znode 52 (602)996-8739'
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

;Revisions:
;27jan88 - Revised for ZAS 3.0 and renamed to MDST24.Z80.
;30jul87 - Re-defined type code bit 4 to specify hi-dens 96tpi formats,
;	   placed all 96tpi dst's in same table. Corrected tracks entry
;	   on ICM5HD dst and renamed to MDST24.
;25apr87 - Added DST table for 5.25" high density drives & renamed
;	   to MDST23. (Must use MFD23 or later floppy driver).
;09apr87 - Added ICM82 8" DSDD 512 sector with one reserved track and 
;	   renamed to MDST22.
;20Jan87 - Placed dsttbl at start of this module and renamed to MDST21.
;27nov86 - Added access mode, base sector number & head id bytes to each 
;	   DST for support of several additional formats. Combined with 
;	   ZDST8F and Added Kpro4, Kpro96 and Ampro DST's. Made cylinder/
;	   track entries 1 based for Turbodos. Renamed to MDST20.MAC for use
;	   with MFD20.MAC floppy driver in both Turbodos and Zsystem.
;01Sep86 - Made BLKS 1 based to match the Tdos DST standard. (Also had
;	   to modify ZDM2.MAC.) Renamed to ZD5F2.
;12Jul86 - Added comments to kpro2 dst.
;06Jul86 - Released as ZDST5F.

	name MDST24	; Module id

;DST size codes (2^n*128):

s128	equ 0		;128
s256	equ 1		;256
s512	equ 2		;512
s1024	equ 3		;1024
s2048	equ 4		;2048
s4096	equ 5		;4096

;These bits in the DST TYPE CODE byte are set true to 
;specify the following parameters:

tsd	equ 1 shl 2	; 1= Two-sided
mfm	equ 1 shl 3	; 1= mfm
hd	equ 1 shl 4	; l= Hi density 
tpi96	equ 1 shl 5	; 1= 96tpi (not used)
ibm	equ 1 shl 7	; 1= IBM pc 9 sector (not used)

;This bit in the block size byte is set true to
;specify the following parameter:

fixed	equ 1 shl 7		; fixed media bit (block size)

;These mode bytes specify how data is accessed on the diskette:

s0mod	equ 0		;side0 mode= use side 0 only
s1mod	equ 1		;side1 mode= use side 1 only
cylmod	equ 2		;cylinder mode= second half of sectors are on side1
trkmod	equ 3		;track mode= odd tracks are on side1

;The following DST value definitions differ depending on wheter the
;format is accessed in cylinder or track mode.
;
; CYLMOD:
; Dst+7= 1 based Sectors per cylinder (both sides of the disk)
; Dst+9= 1 based Cylinders (tracks on 1 side of disk)
;
; TRKMOD:
; Dst+7= 1 based Sectors per track (one side of the disk)
; Dst+9= 1 based Tracks (tracks on both sides of disk)

; Dst+9 is the only value that is 0 based, all others are 1 based.

;The head id byte specifies the value that was written to the head
;field in the sector id header when the diskette was formatted.

;All DST entries are 1 based except for the sector translation
;tables which must use 0 based values.

;--------------------
; DST pointer table.
;--------------------

;The DSKAST table defines the physical disk assignments for the system. A
;floppy drive must have an entry in the table before it can be accessed.
;Each entry has a channel byte. For a floppy drive the high nibble defines 
;the DST table (0-7) and the low nibble defines the Unit number (0-3).
;When a disk is logged in, the system compares the ID info read off the disk 
;to the Type code, base sector numbers and head id bytes in each DST within 
;the table assigned to the drive. The first DST that matches is then selected.

;Only uniquely detectable formats can be placed into the same DST table. DSTs
;that only differ by number of cylinders or number of reserved tracks must
;be placed into a seperate DST table. These formats must then be accessed as
;a different physical drive. The low nibble of the channel byte will select
;the same unit number, but the high nibble will select a different DST table.

;The enty point for each DST table must be placed in the following pointer
;table. The high nibble of the Floppy channel byte uses these pointers to
;select which DST table (0-7) to use. (Drives with the same physical 
;parameters can share the same DST table.)

dsttbl::
	dw dstbla	; Dst 0= 5.25" 48 tpi
	dw dstblb	; Dst 1= 5.25" 96 tpi
	dw dstblc	; Dst 2= 8" 
	dw 0,0,0,0,0	; Dst 3 thru 7 undefined

;------------------------------------------ 
dstbla:: ;DST table for 5.25" 48tpi floppy
;------------------------------------------

; + + + +  kpro2  + + + +

;Kaypro 2, 512 byte sector, SS, DD, 48tpi

type	defl mfm or s512

kpro2::	dw kpro4		; Pointer to next DST in table
	db s1024		; Media type / block size code
	dw 195	 		; Number of blocks (1 based)
	db 2			; Number of directory blocks
	db s512			; Phy sector size code
	dw 10			; Phy sectors per cylinder
	dw 40			; Cylinders
	dw 1			; Reserved tracks
	dw 0			; Translation table address
	db type			; Disk type code
	db 1bh			; Gap length
	db s0mod		; access side0 only
	db 0,0			; side0 base sector & head id

; + + + +  kpro4  + + + +

;Kaypro 4, 512 byte sector, DS, DD, 48tpi

type	defl mfm or tsd or s512

kpro4::	dw td482		; Pointer to next DST in table
	db s2048		; Media type / block size code
	dw 197	 		; Number of blocks (1 based)
	db 2			; Number of directory blocks
	db s512			; Phy sector size code
	dw 10			; Phy sectors per track
	dw 80			; Tracks
	dw 1			; Reserved tracks
	dw 0			; Translation table address
	db type			; Disk type code
	db 1bh			; Gap length
	db trkmod		; odd tracks on side1
	db 0,0			; side0 base sector & head id
	db 10,0			; side1 base sector & head id

; + + + +  td482  + + + +

;Turbodos, 1024 byte sector, DS, DD, 48tpi

type	defl mfm or tsd or s1024

td482::	dw	td481		; Disk spec table link pointer
	db	s2048		; Media / block size code
	dw	200		; Number of blocks (1 based)
	db	2		; Number of directory blocks
	db	s1024		; Physical sector size code
	dw	10		; Physical sectors per cylinder
	dw	40		; Cylinders
	dw	0		; Number of reserved cylinders
	dw	0		; Translation table address
	db	type		; Disk type code
	db	35h		; Gap length
	db	cylmod		; 2nd half of sectors on side1
	db	1,0		; side0 base sector & head id
	db	1,1		; side1 base sector & head id

; + + + +  td481  + + + +

;Turbodos, 1024 byte sector, SS, DD, 48tpi

type	defl mfm or s1024

td481::	dw	amp48		; Disk spec table link pointer
	db	s1024		; Media type / Block size code
	dw	200		; Number of blocks (1 based)
	db	2		; Number of directory blocks
	db	s1024		; Physical sector size code
	dw	5		; Physical sectors per cylinder
	dw	40		; Cylinders
	dw	0		; Reserved cylinders
	dw	0		; Translation table address
	db	type		; Disk type code
	db	35h		; Gap length
	db	s0mod		; access side0 only
	db	1,0		; side0 base sector & head id

; + + + +  amp48  + + + +

;Ampro (MicroMint SB180), 512 byte sector, DS, DD, 48tpi

type	defl mfm or tsd or s512

amp48::	dw	0		; Disk spec table link pointer
	db	s2048		; Media type / Block size code
	dw	195		; Number of blocks (1 based)
	db	2		; Number of directory blocks
	db	s512		; Physical sector size code
	dw	10		; Physical sectors per track
	dw	80		; Tracks
	dw	2		; Reserved tracks
	dw	0		; Translation table address
	db	type		; Disk type code
	db	1bh		; Gap length
	db	trkmod		; odd tracks on side1
	db	17,0		; side0 base sector & head id
	db	17,1		; side1 base sector & head id

;------------------------------------------
dstblb:: ;DST table for 5.25" 96tpi floppy 
;------------------------------------------

; + + + +  td962  + + + +

;Turbodos, 1024 byte sector, DS, DD, 96tpi

type	defl mfm or tsd or s1024

td962::	dw	td961		; Link pointer to next dst
	db	s2048		; Media type / block size code
	dw	400		; Number of blocks (1 based)
	db	4		; Number of directory blocks
	db	s1024		; Physical sector size code
	dw	10		; Physical sectors per cylinder
	dw	80		; Cylinders
	dw	0		; Reserved cylinders
	dw	0		; Xlate table ptr
	db 	type		; Disk type code
	db	35h		; Gap
	db	cylmod		; 2nd half of sectors on side1
	db	1,0		; side0 base sector & head id
	db	1,1		; side1 base sector & head id

; + + + +  td961  + + + +

;Turbodos, 1024 byte sector, SS, DD, 96tpi

type	defl mfm or s1024

td961::	dw	amp96		; Link pointer to next dst
	db	s2048		; Media type / blk size code
	dw	200		; Number of blocks (1 based)
	db	2		; Number of directory blocks
	db	s1024		; Phy sect size code
	dw	5		; Phy sectors per cylinder
	dw	80		; Cylinders 
	dw	0		; Reserved cylinders
	dw	0		; Xlate table ptr
	db 	type		; Disk type code
	db	35h		; Gap
	db	s0mod		; access side0 only
	db	1,0		; side0 base sector & head id

; + + + +  amp96  + + + +

;Ampro (Micromint SB180), 1024 byte sector, SS, DD, 96tpi

type	defl mfm or tsd or s1024

amp96::	dw	kp96		; Link pointer to next dst
	db	s2048		; Media type / block size code
	dw	395		; Number of blocks (1 based)
	db	4		; Number of directory blocks
	db	s1024		; Physical sector size code
	dw	5		; Physical sectors per track
	dw	160		; Tracks 
	dw	2		; Reserved tracks
	dw	0		; Xlate table ptr
	db 	type		; Disk type code
	db	35h		; Gap
	db	trkmod		; odd tracks on side1
	db	17,0		; side0 base sector & head id
	db	17,1		; side1 base sector & head id

; + + + +  kpro96  + + + +

;Kaypro, 512 byte sector, DS, DD, 96tpi

type	defl mfm or tsd or s512

kp96::	dw td5hd		; Pointer to next DST in table
	db s4096		; Media type / block size code
	dw 197	 		; Number of blocks (1 based)
	db 1			; Number of directory blocks
	db s512			; Phy sector size code
	dw 10			; Phy sectors per track
	dw 160			; Tracks
	dw 2			; Reserved tracks
	dw 0			; Translation table address
	db type			; Disk type code
	db 1bh			; Gap length
	db trkmod		; odd tracks on side1
	db 0,0			; side0 base sector & head id
	db 20,0			; side1 base sector & head id

; + + + +  td5hd  + + + +

;Turbodos high density two sided format with no reserved tracks,
;1024 byte sector, double-density. (1.28meg)

;(This is identical to the TDOS82 format below except 
;it has 3 more cylinders.)

type	defl hd or mfm or tsd or s1024 

td5hd::	dw	icm5hd		; Disk spec table link pointer
	db	s2048		; Media type / Block size code
	dw	640		; Total blocks (1 based)
	db	4		; Number of directory blocks
	db	s1024		; Physical sector size code
	dw	16		; Physical sectors per cylinder
	dw	80		; Cylinders
	dw	0		; Reserved cylinders
	dw	0		; Translation table address
	db	type		; Disk type code
	db	35h		; Gap length
	db	cylmod		; cylinder access mode
	db	1,0		; side0 base sector & head id
	db	1,1		; side1 base sector & head id

; + + + +  icm5hd  + + + +

;Intercontiential Micro Systems high density 2 sided format,
;1 reserved track, 512 byte sector, double-density.

;(This identical to the ICM82 8" format below.)

type 	defl hd or mfm or tsd or s512

icm5hd::	
	dw	0		; Disk spec table link pointer
	db	s4096		; Media type / Block size
	dw	308		; Total blocks (1 based)
	db	2		; Number of directory blocks
	db	s512		; Physical sector size (2^n*128)
	dw	16		; Physical sectors per track
	dw	160		; Physical tracks per disk
	dw	2		; Reserved tracks
	dw	0		; Translation table address
	db	type		; Disk type code
	db	1bh		; Gap length
	db	trkmod		; Odd tracks on side 1
	db	1,0		; Side0 base sector & head id
	db	1,1		; Side1 base sector & head id

;------------------------------------------
dstblc:: ;table entry point for 8" floppys
;------------------------------------------

; + + + +  tdos82  + + + +

;Turbodos two sided format with no reserved tracks,
;1024 byte sector, double-density. (1.232meg)

type	defl mfm or tsd or s1024

tdos82::dw	tdos81		; Disk spec table link pointer
	db	s2048		; Media type / Block size code
	dw	616		; Total blocks (1 based)
	db	4		; Number of directory blocks
	db	s1024		; Physical sector size code
	dw	16		; Physical sectors per cylinder
	dw	77		; Cylinders
	dw	0		; Reserved cylinders
	dw	0		; Translation table address
	db	type		; Disk type code
	db	35h		; Gap length
	db	cylmod		; cylinder access mode
	db	1,0		; side0 base sector & head id
	db	1,1		; side1 base sector & head id

; + + + +  tdos81  + + + +

;Turbodos one sided format with no reserved tracks,
;1024 byte sector, double-density.

type	defl mfm or s1024

tdos81::dw	icm82		; Disk spec table link pointer
	db	s2048		; Media type / Block size code
	dw	308		; Total blocks (1 based)
	db	3		; Number of directory blocks
	db	s1024		; Physical sector size code
	dw	8		; Physical sectors per cylinder
	dw	77		; Cylinders
	dw	0		; Reserved cylinders
	dw	0		; Translation table address
	db	type		; Disk type code
	db	35h		; Gap length
	db	s0mod		; Use side0 only
	db	1,0		; side0 base sector & head id


; + + + + icm82  + + + +

;Intercontiential Micro Systems 2 sided format,
;1 reserved track, 512 byte sector, double-density.

type 	defl mfm or tsd or s512

icm82::	dw	ibm81		; Disk spec table link pointer
	db	s4096		; Media type / Block size
	dw	308		; Total blocks (1 based)
	db	2		; Number of directory blocks
	db	s512		; Physical sector size (2^n*128)
	dw	16		; Physical sectors per track
	dw	154		; Physical tracks per disk
	dw	2		; Reserved tracks
	dw	0		; Translation table address
	db	type		; Disk type code
	db	1bh		; Gap length
	db	trkmod		; Odd tracks on side 1
	db	1,0		; Side0 base sector & head id
	db	1,1		; Side1 base sector & head id

; + + + +  ibm81  + + + +

;IBM Industry standard single-sided, single-density,
;128 byte sector, 2 reserved tracks.

type	defl s128

ibm81::	dw	0		; Disk spec table link pointer
	db	s1024		; Media type / Block size code
	dw	243		; Total blocks (1 based)
	db	2		; Number of directory blocks
	db	s128		; Physical sector size code
	dw	26		; Physical sectors per cylinder
	dw	77		; Cylinders
	dw	2		; Reserved cylinders
	dw	ibmxlt		; Translation table address
	db	type		; Disk type code
	db	7		; Gap length
	db	s0mod		; use side0 only
	db	1,0		; side0 base sector & head id

; single-density/single-sided sector translation table
; (Base sector is added to each value so they must be 0 based)

ibmxlt:	db	0,6,12,18,24,4,10,16,22
	db	2,8,14,20,1,7,13,19,25
	db	5,11,17,23,3,9,15,21

	end