PEAK 637 User‘s Guide
BIOS Setup 3-
22
This message is used in conjunction with the I/O CHANNEL CHECK and RAM PARITY ERROR messages
when the segment that has caused the problem has been isolated.
PRESS A KEY TO REBOOT
This will be displayed at the bottom screen when an error occurs that requires you to reboot. Press any key
and the system will reboot.
PRESS F1 TO DISABLE NMI, F2 TO REBOOT
When BIOS detects a Non-maskable Interrupt condition during boot, this will allow you to disable the NMI and
continue to boot, or you can reboot the system with the NMI enabled.
RAM PARITY ERROR - CHECKING FOR SEGMENT ...
Indicates a parity error in Random Access Memory.
SYSTEM HALTED, (CTRL-ALT-DEL) TO REBOOT ...
Indicates the present boot attempt has been aborted and the system must be rebooted. Press and hold down
the CTRL and ALT keys and press DEL.
Appendix: BIOS Reference - POST Codes
Note:
ISA POST codes are output to port address 80h.
POST (hex)
Description
C0
1. Turn off OEM specific cache, shadow...
2. Initialize all the standard devices with default values standard devices
includes:
-DMA controller (8237)
-Programmable Interrupt Controller (8259)
-Programmable Interval Timer (8254)
-RTC chip
C1
Auto-detection of onboard DRAM & Cache
C3
1. Test system BIOS checksum
2. Test the first 256K DRAM
3. Expand the compressed codes into temporary DRAM area including the
compressed System BIOS & Option ROMs
C5
Copy the BIOS from ROM into E0000-FFFFF shadow RAM so that POST will go faster
01-02 Reserved
03
Initialize EISA registers (EISA BIOS only)
04 Reserved
05
1. Keyboard Controller Self-Test
2. Enable Keyboard Interface
06 Reserved
07
Verifies CMOS’s basic R/W functionality
BE
Program defaults values into chipset according to the MODBINable Chipset
Default Table
09
1. Program the configuration register of Cyrix CPU according to the
MODBINable Cyrix Register Table
2. OEM specific cache initialization (if needed)
