Standard Mode Scsi Configuration - Adaptec AHA-1740A Technical Reference Manual

EISA-to-Fast SCSI Host Adapter

Standard Mode SCSI Configuration

The view for Standard Mode is a simple selection for those variables which apply to
all SCSI peripherals connected. This is shown in Figure 3-5. Normally, the default of
one device at SCSI ID 0 with normal default parameters is selected.
Select Enable Parity Checking to allow the host adapter to generate parity on
data sent and check parity on data received on the SCSI bus.
Select Initiate Synch Negotiation to allow the host adapter to attempt to use the
faster synchronous protocol for data transfers on the SCSI bus. The host adapter will
negotiate for a data transfer rate of 5 MBytes/second and an offset of 7. If deselected,
the transfers will use the asynchronous protocol, unless the SCSI drive itself re-
quests synchronous negotiation. If the SCSI drive negotiates for synchronous trans-
fers, the host adapter will respond with a 5 MBytes/second data transfer rate and
offset of 7, or the data transfer rate and offset suggested by the peripheral device,
whichever is lower.
Select Enable Disconnection to allow a peripheral to go off-line while it completes
a lengthy operation like a seek. This allows the host adapter to perform other opera-
tions on the SCSI bus while the device is temporarily disconnected.
System Configuration Detailed View
System Edit View
Global Host Adapter SCSI Configuration Options
Enable Parity Checking
Host Adapter Interface Mode ...... Enhanced mode
Initiate Synch Negotiation
Enable Disconnection
Standard Mode Resource Selection
Ok <Esc>
I/O Port Definition ............. Disabled (Enhanced Mode)
DMA Channel Definition .......... Disabled (Enhanced Mode)
Host Adapter BIOS ................ BIOS Base Address D0000H
Host Adapter SCSI ID ............. Device Id 7
SCSI Bus Reset at Power-on ....... Enable SCSI bus reset
SCSI Device Configuration ....... Press <Enter> to set SCSI
Press (Enter) to make changes or <Escape> to save/abandon changes.
Figure 3-5. Standard Mode SCSI Configuration Screen
Settings Help
yes
yes
yes
Configuration Options
Installation
F1=Help
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