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GEMini_Atari_CD-ROM_Walnut_Creek_December_1993.iso
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hdchck13
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read.me
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1990-04-19
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79 lines
HDCHECK version 1.3 07/29/89
I felt compelled to update HDCHECK after finding the maddening bug
that disabled auto-boot. It was simple to repair (rerun the auto-boot
setup program), but frustrating for anyone using the boot sector
update function. My apologies for any inconvenience or tense moments.
The program fix was also surprisingly simple - a call to the Bios
function Protobt() to recalculate the checksum as suggested by Kent
Schumacher. The checksum was discussed in an article by David Small
in the May 1989 issue of Start. The sum of the bytes (I assume bytes)
in the boot sector must equal 1234 hex for the drive to be considered
bootable with the last two bytes used to make it come out to exactly
$1234. David neglected to say how it was calculated. After I spent too
much time trying to calculate it myself, I took a look at Protobt().
It worked the first time.
This version also includes interface improvements and other minor
fixes.
- The transfer test will now work if the boot sector information is
incomplete.
- Partition (drive) and logical partition sector number will now be
included with the sector information displayed during a number
of the tests. Previously this was only included if the boot
sector information was complete.
- The TOS error number will now be included in file read error
messages.
- Using the RETURN key in response to input will now leave input
fields unchanged.
- Other simple improvements to make it more friendly.
------------------------------------------------------
HDCHECK version 1.2 7/2/89
Was the first version in general distribution.
------------------------------------------------------
HDCHECK was written to deal with a rash of problems I had with my hard
disk. I went through three hard drives and a DMA cable before things
settled down. When I found that the Atari drive maker was using a
picture show program to test my drive, I decided it was time to write
a test program.
The programs forte is checking-out failing drives on multi
drive/controller configurations. Should work on any Atari ST or Mega.
Future features may offer repair options. Except for the file scan
feature the program currently deals with the drive physically and
ignores the partition boot sector, FAT and directory structure. You
should find most of the help you need with the program in the built in
help screens. I know that takes room in the executable, but that way
your DOCs won't get lost.
Thanks to Supra for putting their low level hard disk routines in the
public domain, the same ones used by David Small and Dan Moore with
their Mega-Minute backup program.
*************** HDCHECK is in the Public Domain ****************
Bill LeDuc
9845 Garrison Way
Eden Prairie, MN 55347
612-941-4219