Revision History
These are the changes made to SCSITOOL based on date.
Some descriptions are a bit cryptic and hard to figure out, but...
I've made the history list for my self, not for you!

date is in DD-MM-YYYY format !

1-12-1996
The very first version of SCSITOOL

27-12-1996
altered erase pattern
before inquiry clear buffer

30-12-1996
improved/tested download microcode

03-01-1997
Introduced scsi_execute_bg()
used scsi_execute_bg() in format_unit() and download microcode()

06-01-1997
Introduced format_bg() and format_bg_overview()

15-01-1997
Changed download firmware to support download microcode with offsets and
save mode, older drives do not support this

16-01-1997
Introduced command->eject/rezero and other stuff

18-01-1997
Changed bg_format to format multiple drives at once

19-01-1997
Introduced CD-Rom tower test function

25-01-1997
Fixed a very nasty bug (big one), in read_scsi_list(). Must wait for all busy
devices before destroying their SCSI *'s.

02-02-1997
Introduced multidrive copy

08-02-1997
Introduced log_printf() for logging data to logfile added reassign block to
kill_drive

12-02-1997
Introduced benchmark avg. seek time, spindle speed, latancy, scsi bus speed

01-03-1997
print more info in head window for selected device

02-03-1997
Fixed bug in mdrive_copy, EST time.

12-04-1997
Introduced CD-Rom tower identify by eject; Now supports testing up to 100
CD-ROM drives (probably more);
colored aspi_error report window RED, so it can be seen from a distance.

22-04-1997
Introduced A/V disk configuration/check/undo

14-05-1997
Introduced tape test blocksize in options

03-09-1997
Rewrite of destructive tape test

26-10-1997
Introduced the HBA to the device list, plus info
Support for extended aspi host inquiry, scan the bus for the number
of devices that the bus supports, eg. wide bus scan from 0 to 15
Auto spinup device option for disk drives
Complete mode sense/select
Introduced databit missing detection
(eg. wide hba/wide disk using narrow cable)

20-01-1998
Fixed a small bug in the last parameter of each mode sense/select page
Fixed a problem with escape on "purge defect list" that did not work
and continued formatting the drive
Introduced the "-w" commandline option, forcing SCSITool to scan "wide"
When a device is selected focus is now set to the "test" option
The bar is now always restored to the correct position when returning to
the menu again
Fixed "funny" window when the list to select from is empty
removed "short erase" from tape test II
when distructive disk has done 1 cycle or more, it puts a log stamp on
the last block of the drive, you can view it with hexedit, press Ctrl-End

11-03-1998
Fixed benchmark problem, seq. write/read/verify printed a strange
character in the logfile.
Glist on a jaz drive takes a long time, so the list is not printed
anymore with removable devices.

14-03-1998
Introduced -s option to disable header info.
(some older disks hang on sn, or other commands)
In header say DCC=x, not DCE=x.
Fixed 'Can't select a CD-Rom drive in multiple drive read test' problem

15-03-1998
Enhanced Benchmark Avg. seek
The benchmark avg. seek is an integer of a float (must be float)
If selected device is a fixed disk, display WCE bit in header

21-03-1998
Fixed 'mdrive format doesn't say anything in logfile' problem
Added warning "data will be lost, continue Y/N" before benchmark/write
On destructive tape test, DC message in logfile turned off

22-03-1998
Introduced benchmark full seek

27-03-1998
Fixed aspi_error garbage printing in logfile

28-03-1998
Options->tape blocksize if 512 bytes now 0K
Add TE (terminate Enable) bit in header (if seagate disk) This has been
removed.

05-06-1998
Mode sense/select when selecting changable values, do not change/save
parameters.
Serial_number() fixed bug if serialnumber contains unprintable chars.

16-08-1998
Fixed inquiry error on Auto select device with device id higher than HBA
Introduced a debug option (-d) that logs all scsi I/O commands to a file

22-08-1998
Log Compare errors in logfile. Done, but not tested.

24-08-1998
Added SENSE information when selected device is not ready, that may
explain what's wrong.

26-08-1998
Rewrite of scan_bus(), it now scans all hosts at the same time, which
saves a lot of time in a multiple HBA system.
Fixed bug in list_sel(), when scrolling down the devicelist with up/down
arrow, marker character was displayed.

29-08-1998
Added a detection system to the scan_bus() function which automatically
detects the HBA's buswidth when the first device is found on that bus.
By default it scans for 16 devices (0..15), if it does not find any it
says that no devices were found.
It now supports 7-bit IDs (0..127) like fibre channel devices use.

03-09-1998
Found that the buslogic family, is not happy with the new buswidth
detection introduced on 29-08-1998. It hangs when doing an inquiry
command on a ID higher than 15. Starting it with the -w option (force to
wide) works OK. Made an exception for buslogic cards, default scan 0..7

Changed CD-Rom tower test and multiple drive read-test (same routine) when
testing a CD-Rom drive and the drive is not ready (eg. no medium in drive)
that drive is skipped in the list, and the test continues. Handy when you
have a CD-Rom server with 70 drives, but have only 35 CD-Rom media to insert.

12-09-1998
Changed 'Fire your own scsi command', you can now change the target device
so you can fire a command to a non-selected device, or when no device is
detected.

Created menuitem "set all mode pages to default values"
Changed screen layout of "erase data on disk"

27-10-1998
Fixed buswidth detection (went wrong on some older aha2940's) if
'buswide' is detected as 1 (can't be) than it is set to 8.

Changed scan_bus() so that first a "test unit ready" is done, to detect
the devices, and when a device is found then a inquiry is done. This
detects devices on the scsi bus better and more secure.

Removed the spinup option when device not ready, with the new scan_bus,
scsitool can see when a device has not spun up yet (device reports: "logical
unit not ready, initializing command required" [04/02]) and scsitool spins
it up automatically.

02-11-1998
Changed the header a bit, now also displaying the device type, like disk,
tape, CD-Rom... Removed the TE in the header because most disks do not
support it well. Changed the scan_bus() routine, goes OK in windows 95 now.

08-11-1998
Fixed divide by zero bug if tape blocksize is 0
Added a selection menu, to choose a different buffersize when doing a bench
mark on a CD-Rom in win95, because the win95 16-bit aspi does not support a
buffer of 256K

30-11-1998
Changed to version 1.02

21-02-1999
When using scsitool on a "write protected" floppy disk, the error
"
Write protect error writing drive A.
Abort, Retry, Fail
"
appears.
Scsitool was trying to create or append to the "scsitool.log" file.
Solution: created an option called "Log to file", you can disable it when
using write protected floppy drives. Options are saved in scsitool.cfg.

04-03-1999
Fixed divide by zero bug in disk copy, when copying CD-Rom to harddisk.

22-03-1999
Removed the auto-detect HBA buswidth, it does not work correctly on
some adapters.
So switched back to the HBA extended request which is 100% supported by
adaptec (they created it), but not supported on buslogic adapters, so on
wide buslogic (and others that do not support extended request) you must
use the -w option to scan for devices from ID 0..15, you can check the
"ASPI host adapter info" to see if your HBA supports an extended request.

Added 'Rescan SCSI bus' option.

27-03-1999
Fixed bug in scanbus, with some aspi managers eg. aspi2dos.sys the hostname
was followed by some junk characters.

30-03-1999
Changed Auto spinup drive, now also done when device is reporting:
"Logical unit not ready, cause not reportable" [02 04 00],
since some HP drives report this.

02-05-1999
Added "same sector read" benchmark

17-06-1999
Added "overwrite data?" to Multiple drive descructive test
(thanks to Eddy Bravenboer for bringing that to my attention).

"same sector read" benchmark buffer set to 32k size (was 128K).

26-07-1999
Fixed scan_bus() problem. It did not check if aspi status was 1, which
caused an "invalid SRB" on Compaq Proliant systems (symbios 53C8xx chip)

16-03-2000
Fixed some spelling errors, rearranged/renamed some menu titles.
(thanks to Folkert Rienstra).

Changed "benchmark": results are in a list for preview and can be saved
to a file. Removed the "same sector benchmark option"

20-04-2000
Added 232 more sense codes and sense code qualifiers from draft proposed by
American National Standard for information systems - T10 Project 1236-D
Revision 15 24 January 2000 - SCSI Primary Commands - 2 (SPC-2)
from file called: "spc2-r15.pdf"

Added 2 new device types: Array Controller and Enclosure Services
Inquiry: list_preview()

24-04-2000
Changed interface_speed(), it now scans for the largest buffer and uses that.
Changed the "test" buffer to 32K, must test if that is large enough.
Added "Bfr" to header, it is the total size off all buffer ID's, in most
cases it will be the cachesize (I hope).

02-05-2000
Changed interface_speed() again, now loop from 512 bytes until 128MB blocksize
Used more accurate way to time in benchmark
Added "Bus Xfer" topic to header window
When buffer read are not supported by device, a red aspi screen appeared in
fixed problem with benchmark "scsi bus speed" and "I/O's per second"

09-05-2000
Added Peripheral device types:
0x0A, 0x0B Defined by ASC IT8 (Graphic arts pre-press devices)
0x0C Storage array controller device (RAID)
0x0D Enclosure services device
0x0E Simplified direct-access device (magnetic disk)
0x0F Optical card reader/writer device
0x10 Bridging Expanders

25-05-2000
Multiple drive copy shows a message box with source and target drives,
and now asks if it may start, yes or no. It used to "just start".

Fixed the hexedit goto block functions did not work.

The "log to file" option now works without having to re-start scsitool.
Also the logfile gets "closed" after every line added to this logfile.

06-07-2000
Reworked the scsitool.hlp file a bit (thanks to Folkert Rienstra for helping 
me).
removed is_max() function (you don't need the scsitool.max file anymore).
All functions are enabled by default (also the dangerous ones).
changed scsitool URL to www.nu2.nu/scsitool
changed email to bart [at] nu2 [dot] nu