Mylex MAE486, Руководство пользователя, Страница: 19 / 71

Configuring the MAE466 Jumper functions
Jumper functions
The following sections describe the functions
the jumpers found on the MAE486 system
External cache
l-2 enable external cache
(default)
OPEN disable external cache
Jumper is a reserved jumper, intended to be
used only at the factory. It determines whether
the MAE486 external cache is enabled or dis-
abled. This jumper does not affect the internal
8K cache of the 80486.
The default setting (l-2) enables the external
cache. If you use this setting, the power-on se’
test (POST) routine in the BIOS, or othc
software, must also enable the external cache for
the cache to operate.
disable the external cache, remove the jumper
from pins l-2 at location on the system board.
Operating speed
l-2 operation
(default)
2-3 operation
Jumper determines the operating speed of the
microprocessor. The default setting selects
an operating speed of
If you set the jumper to pins 2-3 at location
the system board, you specify an operating speed
of
2-4
Installation and Operation Guide