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XVME-956 Manual
August 1994
Disconnect
- When this option is enabled, SCSI targets are allowed to disconnect from the
module if there is a long duration of time for completing the operation requested. They
reconnect later when finished. I f disconnection occurs, the module will issue INT 15 (busy,
wait for disk drive) to allow the host cpu using other software to multi-task. When this option
is disabled, the module will not allow targets to disconnect and will not issue any INT 15
calls. This option is typically enabled.
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I / O Base Address
- This module has 32 registers which require 32 byte locations in the
PC/AT I/O space. There are two options: 340H - 35FH or 140H -
15FH.
The range chosen
must not conflict with other system usage. The range 340 - 35FH is typically chosen.
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I n t e r r u p t Level
- This module requires
PC/AT
interrupt for operation. Levels 9, 10, 11, or
12 may be chosen. T h e level chosen must not conflict with any other interrupts in the
system. Level 10 is typically used by XVME CPU modules and level 9 is typically used by
video controllers. Therefore, levels 11 or 12 are good choices.
Diagnostic Messages
If diagnostic messages are enabled, the BIOS will display detailed information during the SCSI
connection phase. This lengthens the connection phase as pauses are inserted enabling the user to read
the messages. When disabled, no diagnostic information is displayed and the connection phase will be
much quicker. This option is usually enabled during initial system debug, then disabled after
satisfactory operation has been achieved.
When enabled, the following information will be displayed during connection:
• A d a p t e c header
• J u m p e r configuration information
• S C S I device information
• B o o t progress report
• E r r o r messages
When disabled, only the Adaptec header and the error messages will be displayed.
Configure the desired diagnostic message option via the switch as described in Section 4.3
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