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********************************************************************
* IDEDesc - IDE device descriptor
*
* $Id$
*
* IDE Defined Offsets
*
* Ed.    Comments                                       Who YY/MM/DD
* ------------------------------------------------------------------

         nam   IDEDesc
         ttl   IDE device descriptor

* IT.STP (offset $14)
*  Bit Meaning
*  --- ---------------------------------------------------------------
*
* IT.TYP (offset $15)
*  Bit Meaning
*  --- ---------------------------------------------------------------
*  7   Hard Disk:  1 = hard disk, 0 = floppy disk
*  6   Fudge LSN0: 0 = OS-9 disk, 1 = non-OS-9 disk
*
* IT.DNS (offset $16)
*  Bit Meaning
*  --- ---------------------------------------------------------------
*  1   Force CHS:     1 = Use CHS, 0 = Use LBA if drive supports it
*  0   Master/Slave:  0 = master, 1 = slave
*

* Interface Address
ADDR     set   $FF50

Master   set   %00000000
Slave    set   %00000001
ForceCHS set   %00000010

DriveSel set   Master


* Driver specific fields
ITDRV    set   $00
ITSTP    set   $00
ITTYP    set   $80
ITDNS    set   ITDRV

ITSOFS1  set   $00
ITSOFS2  set   $00
ITSOFS3  set   $00

* Default Geometry
Sides    set   $20
Cyls     set   $100
SectTrk  set   $0020
SectTrk0 set   $0020
Interlv  set   $01
SASiz    set   $08

        IFP1
         use   defsfile
        ENDC

tylg     set   Devic+Objct
atrv     set   ReEnt+rev
rev      set   $0

         mod   eom,name,tylg,atrv,mgrnam,drvnam

         fcb   $FF        mode byte
         fcb   HW.Page    extended controller address
         fdb   ADDR       physical controller address
         fcb   initsize-*-1 initilization table size
         fcb   DT.RBF     device type:0=scf,1=rbf,2=pipe,3=scf
         fcb   ITDRV      drive number
         fcb   ITSTP      step rate
         fcb   ITTYP      drive device type
         fcb   ITDNS      media density
         fdb   Cyls       number of cylinders (tracks)
         fcb   Sides      number of sides
         fcb   $01        verify disk writes:0=on
         fdb   SectTrk    # of sectors per track
         fdb   SectTrk0   # of sectors per track (track 0)
         fcb   Interlv    sector interleave factor
         fcb   SASiz      minimum size of sector allocation
initsize equ   *
*IDE Driver specific additions to the device descriptor go here
* NOTE: These do NOT get copied into the path descriptor; they
*       cannot due to the fact that there is simply NO ROOM in
*       the path descriptor to do so.  The driver must access
*       these values directly from the descriptor.
         fcb   0,0,0,0,0,0,0,0,0

        IFEQ  DD-true
name     fcs   /DD/
        ELSE
name     fcc   /H/
         fcb   '0+ITDRV+$80
        ENDC
mgrnam   fcs   /RBF/
drvnam   fcs   /CCIDE/

         emod
eom      equ   *
         end
author	Tormod Volden <debian.tormod@gmail.com>
date	Tue, 19 Apr 2022 18:12:17 +0200
parents	a7c66ffbec7c
children