User's Manual

Shadow RAM

For higher performance, the PEM-3301 has two shadow RAM func-

tions. Shadow RAM is one of the features of the PEM-3301. Your BIOS

or diskette will support the following:

A 64KB DRAM space allocated for system BIOS shadow

RAM

A 64KB DRAM space allocated for video BIOS shadow RAM

BIOS and video addresses are allocated for shadow RAM. Both

sections are 64KB in size. Refer to the table below for more informa-

tion.

Figure 2-15: System and Video BIOS

Note that a reserved 128K DRAM space is allocated for shadow RAM.

You cannot use it for another purpose even if these functions are

disabled. Refer to the table below for more information.

Table 2-6:

Shadow RAM Control Port

Chapter 2: Setting Up Your System