C8EFF.ADF - Init file for _8EFF.ADF @8EFF.ADF - IBM PS/2 SCSI Adapter w/Cache (modified, no ADP, ROM area selectable / German comments) SCSIFIX.ZIP Finally! A utility to alter the number of sectors for a SCSI drive and convert them to a 3.94GB drive! Bob Eager, you have answered a prayer! 192-067 PS/2 Micro Channel SCSI Adapter with Cache [32 bit busmaster, autoterminating] SCSI w/Cache, three oscillator, FRU 85F0063 Microcode Differences 10 pin Artifact
on Newest SCSI w/cache SCSI with Cache/A FRU 85F0063 ![]()
20MHz oscillator is for the SCSI-Line interface processor. 25MHz drives the cache controller. 32MHz is for the 80C186-16 microcontroller, which supplies the busmaster functions. This card is significantly faster than the "old" adapter IBM Personal System/2 Micro Channel SCSI Adapter with Cache ![]() NOTE: This adapter
is also referred to as a "three can" Spock, because of
the three square silver oscillators, or "cans". It has a burst transfer rate of 16.6MBps over the MCA
bus and can be used in either a 16- or 32-bit Micro
Channel slot. The IBM PS/2 Micro Channel SCSI Adapter
with Cache is a 32-bit busmaster SCSI adapter containing
a 512KB cache buffer that allows system memory to be
totally dedicated to running the application rather than
a portion being reserved for software caching. This SCSI adapter is recommended where improved data transfer rates and multiple SCSI devices are required and system memory is constrained. However, 512KB cache is too small for the LAN Server application. The "latest" cached SCSI, FRU 85F0063
(FCC-ID is ANOSPRIME), has no Adaptec chip present and a
larger yellow 20-pin DIL terminator chip close to the
external port. This card has the strange
10-contact card edge connector close to the
internal 50-pin card-edge. It has a third oscillator as
well: a 32.0000MHz (Y3). Microcode
Differences From Tony Ingenoso Terminator Resistance Values
It looks like this.. What about that Artifact? From Ian Brown One of these 'unique' ideas was the
ability to be able to set the SCSI ID# remotely from the
host adapter rather than having to set it on the device
itself. The result of this was the 'legacy' small
connector on some 'high end' SCSI hosts, and that
awkward RS6000 socket as the external port, which became
the IBM standard for a while. The idea was good, but be grateful it
never took off, as I understand it required decoding
hardware on the devices, which could have left us
looking for special 'IBM SCSI' HDD's etc. How did I find out? I went to a 'Big Blue' re-union recently, and met one of the original designers of the IBM SCSI host adapters. I'd been wondering about that extra connector for years, so I took the opportunity to ask him. AdapterID 8EFF "IBM PS/2 SCSI Adapter w/Cache" I/O Address DMA Arbitration Level
Fairness On/Off ROM Wait State Disable
SCSI Adapter Address (ID)
ADPItem 1 ROM Address Range
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