48
Phoenix Award BIOS
4.10 BIOS POST Codes
4.10.1 Normal POST Codes
POST (hex)
Name
Description
C0
Turn Off Chipset And CPU test
OEM Specific-Cache control
cache
Processor Status (1FLAGS)
Verification. Tests the follow-
ing processor status flags:
Carry, zero, sign, overflow,
The BIOS sets each flag,
verifies They are set, then
turns each flag off and veri-
fies it is off.
Read/Write/Verify all CPU
registers except SS, SP, and
BP with data pattern FF and
00. RAM must be periodi-
cally refreshed to keep the
memory from decaying. This
function ensures that the
memory refresh function is
working properly.
C1 Memory
Presence
First block memory detect
OEM Specific-Test to size
on-board memory. Early chip
set initialization Memory
presence test OEM chip set
routines Clear low 64K of
memory Test first 64K mem-
ory.
C2 Early
Memory
Initialization
OEM Specific- Board Initial-
ization
C3
Extend Memory DRAM select
OEM Specific- Turn on
extended memory
Initialization
Cyrix CPU Initialization
Cache initialization
Summary of Contents for NuPRO-796 Series
Page 4: ......
Page 13: ...Introduction 5 1 4 NuPRO 796 Functional Diagram Figure 1 1 NuPRO 796 Block Diagram ...
Page 14: ...6 Introduction 1 5 NuPRO 796 Mechanical Diagram Figure 1 2 NuPRO 796 Carrier Board Layout ...
Page 28: ...20 Connectors and Jumpers ...
Page 45: ...Phoenix Award BIOS 37 4 5 3 Onboard Audio Enable or Disable ...
Page 68: ...60 Watchdog Timer ...
