Specifications

Table 5–2 (Cont.) System Board Setup Options
SCU Setup Field Settings Comments
On-board mouse control Enabled
1
Enables the on-board PS/2
mouse port. IRQ = 12.
Disabled Disables the on-board PS/2
mouse port.
Speaker control Enabled
1
Turns the speaker on.
Disabled Turns the speaker off.
CPU speed Fast
1
CPU module operates at its full
rated speed.
Slow CPU module simulates 8
MHz Intel 286 microprocessor
operation.
NumLock No Off when system boots.
Yes On when system boots.
I/O bus performance Standard
1
Some ISA and EISA modules
can be run in standard or
enhanced mode. Set this
feature to match the mode of
the module. Adaptec 1520,
1540B, and 1740A are default in
standard mode.
Enhanced Set when the 1740A is set for
enhanced mode.
LCD operation Enabled For future use. Do not enable
LCD operation.
Disabled
1
Disables the LCD option.
Enabled - suppress
POST messages
Enables the LCD option, but
suppresses any POST messages.
Reserved system
resources
Configuration file and
overlay
For future use.
1
Default.
System Configuration 5–15