
Datalight ROM-DOS v7.10 (Revision 4.20.1594SU)
Software Developer's Kit
Copyright (c) 1989-2008 Datalight, Inc.                          June 19, 2008
Datalight ROM-DOS Single User Version
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Welcome to Datalight's ROM-DOS Single User Version.

The manual (DOCS\Single User ROM-DOS Guide.PDF) takes you step-by-step 
through the process of installing Datalight's ROM-DOS Single User Version.

This README.TXT contains any last minute changes that did not make it
into the manual.  It also contains the information necessary to create 
the boot floppy necessary for installing the software on your system,
in case the InstallShield installation failed.

What's New
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  Using disks larger than 8GB
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  (4.11.1594)

  The ROM-DOS kernel uses CHS (Cylinder, Head, Sector) addressing until
  it reaches the maximum values for these fields and then switches to using
  LBA (Logical Block Address) addressing.  A problem was corrected in the
  math to determine if a disk access crossed this boundary, therefore
  requiring both CHS and LBA addressing to complete the access.



Installing the Software
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If you were unable to create the bootable floppy during the 
InstallShield installation routine, follow these steps:

1) Place a blank, formatted 1.44MB floppy disk in drive A.

2) In a DOS box, go to the directory where the software was
   installed.  Probably  "C:\DL\ROMDOS SUV"

3) Go to the directory of the version of ROM-DOS Single User Version
   you want to use: "622" for ROM-DOS 6.22 or "71" for ROM-DOS 7.1.

4) To make the floppy disk bootable, type the following command:

        C:\DL\ROMDOS SUV\622\> SYS A:
   or 
        C:\DL\ROMDOS SUV\71\> SYS A:

5) Copy all the needed files onto the floppy disk with the following
   command:

        C:\DL\ROMDOS SUV\622\> XCOPY *.* A:
   or
        C:\DL\ROMDOS SUV\71\> XCOPY *.* A:

   You can choose not overwrite "COMMAND.COM" when prompted.

6) The disk is now bootable and contains ROM-DOS Single User Version.



Recommended DOS Texts
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The following are all excellent texts on the topic of DOS,
and the BIOS.

1.   Microsoft MS-DOS Programmer's Reference
     Microsoft Press, 1993
     ISBN 1-55615-546-8

2.   PC Interrupts
     by Ralph Brown, Addison Wesley, 1994
     ISBN 0-201-62485-0


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