Specifications

EPC-8 Hardware Reference
4 4
4-6
Be aware that the contents of this block are included in the BIOS checksum so any
modification to this area also requires a modification to the checksum value itself.
CMOS Backup and Restore
Use the CMOSTOOL.EXE function to copy and restore CMOS parameters into the 4
Kbyte-sized “ parameter block 1” on the Flash boot device chip. This is useful if
battery life becomes an issue, or for backup.
To Save your CMOS parameters into a partition block in the Flash memory, type the
following:
CMOSTOOL /S
Jumper JP4 (‘‘BIOS’’) must be installed for Save to work. Be sure to remove this
jumper after using this function.
To Load the saved CMOS parameters in the Flash memory back into CMOS, type the
following:
CMOSTOOL /L
Video Controller
The EPC-8 hardware includes a VGA graphics controller implemented using the
Cirrus Logic GD54xx. This is connected to the CPU local bus to give the best possible
graphics performance. VGA memory is 512 Kbytes, resulting in the following
resolutions:
640 x 480 16 or 256 colors
800 x 600 16 or 256 colors
1024 x 768 16 colors
The BIOS will not enable (using bit 2 of register 8102) the VGA controller if another
VGA controller is enabled on the EXM expansion interface.
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