@0708.ADF BusLogic BT-640 / SDC3211B
@0708.ADF BusTek BT-640A SCSI Adapter (rename to @0708.adf)
BT-640A ADF File
BT-640A Files (BusTek/BusLogic bought by Myles, bought by LSI)
BT-640A Installation Guide
Buslogic BT64x - General Information [!]
BT-640 / SDC3211B
BT-640A SCSI Adapter for Micro Channel Systems
Host Bus: 16 and 32-bit MCA 32-bit busmaster DMA transfers of up to 40 MB/sec
MPU: 8 MHz 80188 onboard microprocessor
SCSI Controller: NCR 53C94
ASIC: 86C05 busmaster ASIC
SCSI Bus: Up to 7 devices
SCSI-2 command set compatible
Up to 5MB/sec synchronous or asynchronous
Onboard term: single-ended 3 resistor packs (220/330 ohm)Term power supplied to bus
Firmware: Mailbox structure supports multitasking and scatter/gather
BIOS: Supports HD boot Up to 8GB storage capacity supported in BIOS
BT-640 and SDC3211B 32 Bit SCSI-1
D1 SCSI Activity LED
D2 Termpwr diode
J1 50 pin internal SCSI
J2 50 pin HPDB SCSI
U26 NCR 86C05
U30 NCR 53C94
U34 25.0000 MHz osc
W2 outline for 2 pin header
Y1 H1600 xtal
Y2 40.000 MHz(?) xtal
RP1-3 single-ended termination, 8-pin
220/330 ohm SIP resistor packs (221/331G or equivalent)
Uses 27C256 EPROM.
3.35 Firmware / 4.70 SCSI BIOS images
AdapterID 0708h "BusLogic 32 Bit Bus Master MCA-to-SCSI Host Adapter (v1.50)"
Memory location of the host adapter's
BIOS PROM. To disable
the host adapter's BIOS PROM, choose the 'Disable'
option. Note, if
two Micro Channel host adapters reside in the system one
of them must have
its BIOS PROM disabled. The default setting is
D8000, D4000, D0000, CC000, C8000, C4000
I/O Port Address
I/O Port of the host adapter. Default I/O
address is 330h.
334, 234, 134, 230, 130
DMA channel used to transfer data The default
level is 5.
6, 7, 4, 3, 1, 0
Bus Arbitration Fairness controls whether the
host adapter implements
the fairness alorigthm after it is preempted from the
Default is fairness enabled.
Interrupt channel the host adapter will use
to report status.
The default is interrupt 15.
14, 12, 11, 10, 9
The streaming data procedure transfers data
blocks by using
a single address followed by multiple 16- or 32-bit data
a single streaming data cycle. If data streaming is
enabled, the host adapter
can achieve a maximum data transfer rate of 40 MBytes/sec
on the Micro Channel
bus. If data streaming is disabled, the maximum data
transfer rate is 20
Note: SCSI BIOS 4.70
has "33 Megabyte
per second Bursting Transfer Active".
Adapter SCSI Bus ID
SCSI ID of the host adapter. The
default setting is SCSI
6, 5, 4, 3, 2, 1, 0
Adapter Initiate Sync Negotiation
Synchronous transfer on the SCSI bus will be
initiated by the
host adapter if 'On'. The default setting is On.
Adapter SCSI Parity Checking
The host adapter will check SCSI Parity if
'On'. The default
setting is On.
DOS Disk Space > 1GBytes
The host adapter will change cylinder, head,
& sector per
track to support drive capacity greater than 1GigaByte if
default setting is Off. See the information
below on Disk >1GB.