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1992-07-29
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7KB
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178 lines
A Replacement for the Old Device Drivers for OTRONIC
SCSI Controller Boards
For rebuilding the binaries you may need:
- Aztec C V5.2a;
- GNU sed version 1.01 ( Fish Disk Nr: 231 ).
I use a private port of version 1.08;
- MV from Fish Disk 219.
The binaries in "bin" are for AMIGAS with MC680x0 ( x > 1 ).
Hardware Guide
Users from OTRONIC OSSI-SCSI-CONTROLLER boards can
replace their EPROM resident device driver:
- Open the Controller;
- There are 1 2764D and 1 27128A;
- Clear both chips with an EPROM erasing device;
- Reburn 2764D with file "EPROM_68000/ROMHD.64";
- Reburn 27128A with file "EPROM_68000/ROMHD.128";
- Short jumpers 1-2 for autobooting with new driver;
- Or 2-3 for disabling autoboot from new driver ( In this case
you must use binddrivers for starting );
- Reassemble the controller box and have fun....
Software Guide:
Before reburning your EPROMS you can test your hard drive:
(*) - Copy expansion/HardDisk to sys:expansion/ on a WorkBench disk;
- POWER DOWN your machine;
- Disable Autoboot on your Controller Board under the old
EPROM resident driver ( Jumpering 1-2 );
- POWER UP your machine;
- Load KickStart 1.3 or 2.0 on A-1000 machines;
- Reset your machine with empty drive slots;
- Now the machine should'nt boot;
- Insert the WorkBench Disk prepared as described in step (*)
with the reset resident version "HardDisk" in sys:expansion/;
- Open a Shell Window and type: BindDrivers;
- Your hard drive(s) should respond with a short flash of their LEDS;
- Reset your machine with empty drive slots;
- Now your machine should boot
from the new reset resident driver after
every reset, unless you activate KillOssiDriver
on machines with Kickstart 1.3 and beyond.
- Activating partitions under Kickstart 1.2,
you must refer explicitely
partitions after invoking BindDrivers.
Example: The name of a partition is
HD0:, the command line "cd HD0:" in your
startup-sequence of the WorkBench Disk
activates the named hard disk partition.
Startup-Sequence sample code for partitions HD1: Hd2:
.....
.....
BindDrivers ; this activates the driver
cd HD0: ; this actives (from device driver)
; premounted partition HD0:
cd HD1: ; this activates partition HD1:
If the above steps work you can reburn your EPROMS and the machine
should autoboot with jumpers 1-2 connected from the EPROMS
after POWER UP on AMIGA-500 and after loading Kickstart on A-1000.
Hints: You find these EPROM types on nearly every old
PC-clone motherboards or similar hardware junk
if you want preserve
your original EPROMS ( A very Cheap solution );
Grounding PIN 26 of the 2764D socket allows the usage
of another 27128A as replacement if you burn the lower 4KB of
this chip with "EPROM_68000/ROMHD.64" thus using two 27128A instead
of the original 27128A/2764D pair;
Other
Suitable EPROMS: D27128A/L7490293S from Intel ( 12.5V )
D27128A/L7150289S from Intel ( 12.5V );
Due to the mapping of the original on board SCSI-connector with
50 pins into 37 pins for the external OSSI-SCSI drive box
there exists a NOT CONNECT condition for /ATN.
You should connect pin 32 of the connector with pin 15 of
the AM5380PC controller chip. Now you can use
a standard SCSI-cable for connecting external SCSI-boxes
to your OTRONIC controller;
The on board 50 pin connector points to the front side if
you connect the controller to an AMIGA-1000!!
Front side:
|---- Pin 32 Top
|
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
^
|
|--- Pin 1 Bottom
Jumper location in the controller box:
|-----------------------| Connecting 1-2 enables Autoboot for
| .. ... | Kickstart 2.0 or 1.3 if my device
| 123 | driver is EPROM resident.
8-| ^ | Connecting 2-3 disables Autobooting
6 | /|\ | for Kickstart 1.2 if my device driver
| | |--- Interesting | resides in the EPROMS. Conversely
P | Jumpers | jumper setting 1-2 disables Autoboot
i | |---------| | with the old EPROM resident device driver
n | | 27128A | | and setting 2-3 enables the Autoboot
| |---------| | using EPROMS with the original driver.
C | |
o | |
n | |---------| |
n | | 2764D | |
e | |---------| |
c | |
t | |
o | |
r-| |----------------| |
| | AM5380PC | |
| |----------------| |
| |
|-----------------------|
50-Pin SCSI Connector
For partitioning of large disks like FUTJITSU M2266S/H 1GB
you should use the standard COMMODORE tool HDToolbox from
a CLI console, type in: hdtoolbox hd.device;
DiskDefine only works correctly with small SCSI drives;
I tested my device driver with CONNER 3200CP 200MB, FUTJITSU M2266S/H
1 GB, SyQuest 88MB, Archive Viper Tape Streamer, SEAGATE 296N 80 MB;
The new device driver also works with Kickstart 37.175
and WorkBench 37.67.
I am not liable in any case for damages to your Hard- or Software
due to using my device driver or performing the above upgrades!!
P.S. If you burned successfully some EPROMS with
the supplied binaries and every thing works well,
or if there is a hard disk not supported from my driver, send mail
to eloew@edv-z.tu-graz.ac.at
I will post the sources in PD or in catalogs like "Kickstart"
, "Amiga Welt", "Amiga Plus" or elsewhere if there are
feedbacks.