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Chapter 5: Theory of operation
57
BIOS flash support
BIOS ROM
The re-programmable, 4Mbyte FBD (Flash BIOS Device) consists of 32 128KB
blocks. The top 1 Mbyte holds the BIOS while the remainder is available for OEM
non-volatile storage.
For a map of the flash chip, see
Appendix E, Flash memory addresses
information about re-programming the flash chip, see
The BIOS Setup program can save and restore a CMOS configuration using storage
in the FBD. This feature is useful because the EPC-6315 does not have battery on
board. A battery could be installed on the carrier card and connected to the
EPC-6315 via pin 62 of the optional JN4 connector. The BIOS CSR function
automatically saves and restores CMOS RAM contents to flash since there is no on-
board battery on the EPC-6315.
For more information about the BIOS setup program, see
.
Summary of Contents for EPS-6315
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