rev71upd.exe SCSI-2 Fast/Wide Adapter Firmware Upgrade 7.1
SCSI-2 Fast/Wide Adapter/A FRU 92F0160
Fast/Wide SCSI-2 Adapter/A FRU 92F0160 "Corvette"
U3 and U6 are:
Fast/Wide SCSI-2 Adapter/A Rear
LED Flash Codes
All SCSI-2 F/W adapter versions (Corvette SE, DE, Enhanced/Turbo, and Integrated) have an onboard LED indicator that aids in problem debugging.
At power ON, the LED stays lit until SCSI POST executes (RS6K, system LED=292). If SCSI POST is successful, the LED turns off.
If there is a hardware failure, the LED flashes a failure code. The failing component is identified by LED blinks, a pause, then a repeat of the blinking code again, over and over.
A blink code of 3, 8, or 10 may indicate a configuration problem like a shorted cable or bad device, or duplicate SCSI addresses on the same bus.
LED stays solidly lit after SCSI POST executes - replace SCSI controller.
Example: If the LED blinks 8 times, this indicates a bad internal SCSI bus. First, remove the internal SCSI cable from the SCSI Controller. If the problem persists, replace SCSI Controller. If not, add the cable and SCSI devices back (one at a time) until LED again starts to blink.
IBM's patent info/Tech Discovery
identifies the Burn/Alive/TXD/RXD as being used to flash
certain components. Basically, factory use only.
Running Wide Devices on Narrow Cables
The Corvette automatically terminates it's end of the SCSI bus with termination networks on the back side. However, some user intervention IS required within System Programs.
Uli Link replies:
Not in terms of termination.
Some combinations of Narrow and Wide devices on a Corvette
8EFCh "IBM PS/2 SCSI-2 Fast/Wide Adapter/A" or planar
"Wide SCSI messages - Internal"
Server 85 - Sharing External SCSI DASD fails
External SCSI DASD expansion shared between two system fails when one of the systems is powered down. Systems affected : 9585 0N* MCA SCSI-2 Fast/Wide controller card.
On the 9585 0N* the trace on the solder (back) side of the planar running parallel below resistor R351 must be cut. On the SCSI-2 F/W controller the trace running next to C30 on the component side of the card must be cut. This trace runs from the fourth pin from the right on the bottom of the larger IC next to the external connector.
On the Corvettes in my possession, some have no trace at all from the fourth pin, nor is there a C30 on the PCB. Others have it. YMMV.
The Corvette is a SCSI-2, 32-bit MCA 40MBps Data Streaming bus master adapter with dual SCSI-2 16-bit, F/W channels (one 20MB/s internal, one 20MB/s external). The dual bus of the adapter prevents access to internal DASD from the external port and also allows the maximum cable length to be calculated individually for each bus. Data transfer rates for 8 bit SCSI up to 10MB/s, 16 bit devices up to 20MB/s.
The Corvette supports SCSI Tagged Command Queuing (TCQ), making it possible to send multiple commands to the fixed disk, and the disk stores the commands and execute each command in the sequence which will give optimal performance. Standard 8-bit SCSI devices are supported using either asynchronous, synchronous, or fast synchronous (10MBps) SCSI data transfer rates.
RS/6000 SCSI-2 Fast/Wide Boot SupportSCSI-2 Fast/Wide adapters available for the RISC/6000 are recognized as boot devices on all POWER2 and PowerPC systems. They are not recognized as boot devices on POWER- based models. Any devices attached to a POWER-based model via a SCSI-2 Fast/Wide adapter may be used for storage but cannot be used as a boot device.
SCSI-2 F/W Adapter (4-6, 4-7, 4-C) Boot Support
Update Corvette Flash (from Uli Link over in Germany)
Run rev71upd.exe It creates a bootable floppy -
REV71 BIN 131,082 01-19-96 6:40p REV71.BIN AUTOEXEC BAT 720 04-13-03 1:07p AUTOEXEC.BAT README TXT 815 10-05-95 10:06a README.TXT DOWNCORV EXE 2,479 08-31-94 6:16p DOWNCORV.EXE REV58 BIN 131,082 09-22-93 3:50p REV58.BIN SCSILEVL COM 928 03-24-93 5:31p SCSILEVL.COM COMMAND COM 48,006 10-25-91 12:00p COMMAND.COM DOWNNEW EXE 2,479 08-10-94 9:53a DOWNNEW.EXE
Copy Rev77.bin to a:. Edit a:\autoexec.bat:
@echo off //--------------------// @echo on pause downnew rev77.bin <-- rename the rev71.bin to rev77.bin @echo off //---------------------//
You can use "downcorv.exe" instead of "downnew.exe" "downnew.exe" checks for flashing only newer firmware into corvette. "downcorv.exe" is even able to downgrade.
If you flash the DOS way, the new firmware level is NOT recognized by AIX. To flash a PS/2 corvette in a RS/6000 rename 8EFC3011.77M to 8EFC0001.77M. Now the firmware level 077 is recognized by AIX. The adapter still will work in a PS/2 and can be downgraded back to 071 or even 058.
Tested with 3 corvettes in RS/6000 C10 and
2 Lacunas. No problems so far. But no problems before
How Many is Enough?
Tim Clarke uttered this after a pint of warm beer:
80C188 vs. 80C186
Older adapters (SCSI, SCSI w/cache) use an
80C188-16 microcontroller as busmaster-CPU, the
Fast/Wide uses an 80C186-20 busmaster CPU.
Both CPUs however are integrated CPUs
with 2 8-bit parallel-ports, the -188 has 8-bit external
data-path, the -186 has 16-bit external data-path and
slightly different (enhanced) command set.
There is one PTC for the internal SCSI bus
and another for the external bus. The PTC protects the
SCSI bus from high currents due to shorts on the cable,
terminator, or device. It is highly unlikely that the PTC
resistor can be tripped by a defective adapter.
MF-SM Series MF-SM150.
PLCC Socket on Fast/Wide
Jumpers on Fast/Wide
The results of shorting the jumpers ranged
from no difference, slight performance hit (%10 overhead
increase) or a system-halting error. Leave them off.
RS6000 documentation says the jumpers are to be left
68 pin Internal Connector on F/W SCSI Adapter
This is a "mini-Centronics" plug. The ANSI moniker
for it is a "P" plug. 80 pin version seems to be used for
SCA drives... Hmm... It used to be you could find many IBM
P/2 or RS/6000 cables and you could pick and choose the
exact one for your PS.2. Nowadays, there are a lot more
HPDB68 SCSI connectors to IBM SCSI controllers
AMP (Tyco) # 1-557089-2 Obsolete, but old stock available here and there...
050,68P A/P RCPT,25 CL CHAMP. 0.050 I Series
TE Connectivity (Molex) # 1734098-7 Active part.
Molex 71660i, Molex part
15-92-3068 1.27mm (.050") Pitch
The 68 pin crimp-on device connector.
68 Pin External Conductor
Using HPDB68 Cables with MCX Ports
The C68 or MDX port is refreshingly rare. IBM did have some smarts when it made a handy-dandy adapter, "Interposer 68 Ribbon to 68 Socket", P/N 50G0460. Mine is made by Amphenol with a date of 06/97.
Use of this interposer is simple. Use the thumbwheels to fasten the interposer onto the F/W adapter. Screw on the HPDB68 socket. Power on and compute.
05H3834 is HPDB68 Only!
This is an HPDB68 M to HPDB68 F interposer, for MAGSTAR 3570, 3590, and 9406 AS/400. It is a near-miss, where BOTH connectors are HPDB68... No Holy Joy, folks, move along...
"INTERPOSER 68 HIGH TO 68 STANDARD" IBM P/N 05H3834, Amphenol 04/95.
"05H3834 is an IBM part number for a SCSI interposer
which was only needed for the old tape/disk controller
card feature card #6501. It is a passthrough type
connector, with male pins on one side and female pin
receptacles on the other side.
SCSI device and adapter configuration flexibility
Systems with the enhanced SCSI device and adapter support allow up to 8 IBM PS/2 SCSI adapters of any type to be installed in a single system. The maximum number of SCSI devices which many be configured in these newer systems has also been increased from 60 to 120. However, other factors, for example, the type of devices (optical, etc.), cooling requirements, or power consumption of the devices may limit the number for a particular system.
SCSI Device Order
SCSI device logical ordering and hard drive
letter assignment (e.g. C:, D:) sequence is determined
by the SCSI adapter slot numbers, internal or external
SCSI bus connection, and SCSI ID of the connected
Adapters are scanned for SCSI devices beginning with the SCSI adapter in the lowest numbered slot. Devices connected to the same adapter are logically ordered according to device SCSI IDs in order from 7 to 0 and then from 15 to 8 according to the priority scheme defined by the SCSI standard. Devices connected to a SCSI-2 Fast/Wide adapter's internal bus connector are ordered logically before devices connected to the external bus of the same adapter.
Maximum SCSI Devices Supported
Wide SCSI devices support 16 possible SCSI ID values. The adapter uses one these values; therefore, the SCSI-2 Fast/Wide adapter can connect up to 15 fast and wide devices internally or externally in any combination using the remaining ID values. Narrow SCSI devices support 8 possible SCSI ID values; therefore, up to 7 narrow SCSI devices can be connected to the internal or external SCSI buses in any combination using the remaining ID values. Wide and narrow devices may be mixed on the same internal/external bus by using the proper combinations of SCSI bus cables, terminators, and/or SCSI connector convertor adapters.
Note: Use of a 8 bit (Narrow) cable forces the controller to default to only 7 devices supported on that port, even if all devices on that cable are Wide.
Fast POST Consequences
Some newer systems also provide a FAST POST
option which may be selected from the system
configuration menu or from the IBM logo screen.
When this option is selected, the system will not check
for the presence of newly added SCSI devices unless F1
is also pressed while the IBM logo is displayed.
Newly added SCSI devices will not be configured nor will
an error occur if the fast post option is chosen as the
default. To access the system configuration program,
press F1 while the IBM logo screen is displayed to
configure the new SCSI device(s) initially.
SCSI-2 Fast/Wide Adapter/A Specs
ADF Sections @8EFC.adf 4/10/95
DMA Arbitration Level
SCSI Adapter Address (ID)
Move Mode Support
Wait State Support
Data Parity Exception Handling
Selected Feedback Return
100ns Streaming Data Transfer
If you are using an operating system that
is single-threaded and issues commands to only one
device at a time (such as DOS or
Win95), disabling SCSI disconnect might
result in a slight performance improvement. If
your operating system is multi-threaded (such as OS/2),
disabling SCSI disconnect will degrade the performance
of the SCSI subsystem.
Fast SCSI - External
'Enabled' if external Wide SCSI device attached with WIDE (16 bit) cable.
'Disabled' if external Wide SCSI device attached with NARROW (8 bit) cable -OR-
if an external Narrow SCSI device is attached with a NARROW (8 bit) cable.
Note: "Disabled" applies termination to the High Byte on the adapter itself.
<Enabled> or Disabled
Wide SCSI messages - Internal
'Enabled' unless a Wide SCSI device is attached through a narrow (8 bits wide) cable.
Note: This is almost always using a Wide drive on the 50 pin edgecard connector.
<Enabled> or Disabled
Internal/External Bus Mode
'Combined', all devices must have
unique SCSI ID settings regardless of which SCSI bus
connector is used to attach the devices. Default
is 'Separate' unless you are using an operating system
device driver that does not support independent
operation of the internal and external SCSI busses on