'DSKDRIVE foreign disk driver - using RSX (85/02/02)'      3 Feb 85 08:30 Z80ASM 1.10 Page  12
'default IBM CPM86 DSDD on Kaypro 4'

                    875 ;	*** This area is accessed/altered by support programs ***
04B3'               876 info:
                    877 ; The "info" area has been organized to fit into exactly 128 bytes
                    878 ; for convenience in auxiliary programs that reconfigure this.
                    879 ;
                    880 ; The CPM standard Disk Parameter Block, extended
                    881 ; Modification to this structure changes the driver
                    882 ;
04B3'               883 dpblk:	; Different values for:	KPRO4	KPRO2	HP125	TVTS802
                    884 ; 	CPM sectors/physical track
04B3' 0020          885 cpmspt:	dw	32;		40	40	32	36
                    886 ;	log2(sectors/cpmallocation block)
04B5' 04            887 bsh:	db	4;		4	3	3	4
                    888 ;	blm, exm calculated from bsh
04B6' 0F 01         889 	db	0FH,01H;	0Fh,1	0Fh,1	7,0	0Fh,0
                    890 ;	total blocks on drive
04B8' 009D          891 dsm:	dw	157;		196	192	251	170
                    892 ;	directory entries - 1
04BA' 003F          893 drm:	dw	63;		63	63	127	63
                    894 ;	directory/other blocks pre-allocated
04BC' 80 00         895 	db	80H,00H;	0C0h,0	0F0h,0	0F0h,0	080h,0
                    896 ;	cks=(drm+1)/4 (or 0 for fixed)
04BE' 0010          897 cks:	dw	16;		16	16	32	16
                    898 ;	reserved tracks
04C0' 0001          899 off:	dw	1;		1	1	3	4
                    900 ;	Non-CPM. 1,2,4,8 sectors/phys record
04C2' 04            901 hstblk:	db	4;		4	4	2	2
                    902 ;
                    903 ; The sector skew translation table. Room for 10k/track
04C3' 00 01 02 03   904 sxltbl:	db	 0, 1, 2, 3, 4, 5, 6, 7
04CB' 08 09 0A 0B   905 	db	 8, 9,10,11,12,13,14,15
04D3' 10 11 12 13   906 	db	16,17,18,19,20,21,22,23
04DB' 18 19 1A 1B   907 	db	24,25,26,27,28,29,30,31
04E3' 20 21 22 23   908 	db	32,33,34,35,36,37,38,39
04EB' 28 29 2A 2B   909 	db	40,41,42,43,44,45,46,47
04F3' 30 31 32 33   910 	db	48,49,50,51,52,53,54,55
04FB' 38 39 3A 3B   911 	db	56,57,58,59,60,61,62,63
0503' 40 41 42 43   912 	db	64,65,66,67,68,69,70,71
050B' 48 49 4A 4B   913 	db	72,73,74,75,76,77,78,79
                    914 ;
                    915 ; Customization tables for system
                    916 ;	log2(hstblk)
0513' 02            917 secshf:	db	2;		2	2	1	1
                    918 ;	Physical ID of 1st sector on track
0514' 01            919 sec1st:	db	1;		0	0	1	1
                    920 ;	Strategy in computing physical addresses
0515' 04            921 config:	db	4;		2	0	2	2
                    922 ; = 0:	1 sided, phys adr = hst adr
                    923 ;   1:	sec>offsec side1, adrsec=off-sec
                    924 ;   2:	odd trks on side 1, trkadr=hstrk/2
                    925 ;   3:	side1 is ntrks up
                    926 ;   4:	side1 is ntrks up, count backward
        0004        927 maxcase	equ	4
                    928 ;	Number of tracks on physical disk
0516' 28            929 ntrks:	db	40;		40	40	40	40
                    930 ;	Correction to side 1 sector adr.
0517' 00            931 nsecs:	db	0;		10	0	0	0
                    932 ;
                    933 ; This portion of "actmsg" is used as ID by altdrive.
0518' 49 42 4D 20   934 altid:		db	'IBM PC (CP/M-86 DSDD)$$$$$$'
                    935 ; At least one terminal "$" must be left in above message
                    936 ; DO NOT CHANGE LENGTH OF MESSAGE
        0080        937 infosz	equ	$-info