Filter
Top Products
2 Troubleshooting Procedures
2-20 [CONFIDENTIAL] TECRA S3 Maintenance Manual (960-532)
Table 2-4 Printer port LED boot mode status (1/9)
LED Status Test item Contents
Permission of A20 and clear of software
reset bit
Prohibition of APIC
Initialization of MCH, ICH
Initialization of Super I/O
Initialization of debug port (For models
supporting debug port)
Dummy read of 3
rd
Bus data
Setting of printer port (For models
supporting printer port)
B0h PIT CH0 initialization (for HOLD_ON)
BIOS rewrite factor flag initialization
CHECK SUM CHECK Transition to protected mode
Boot block checksum (skipped when
returned from S3)
Halts when error occurs
Checksum other than boot block (skipped
when returned from S3)
B1h
EC/KBC rewrite check
If “rewrite” is requested, go to “BIOS rewrite
process”.
B2h Initialization of SC HLT at LED=B3H or B4, when error occurs
Key input (skipped when returned from
S3)
When a key is pressed, check if it is Tilde
key or Tab key. (skipped when returned from
S3)
B5h Enables CPU cache
B6h Security check
BIOS rewrite request check If Checksum check error occurred on except
Boot Block or rewrite is required by user, go
to “BIOS rewrite process”.
B7h Transits to System BIOS IRT
BIOS rewrite process
Initialization of ICH. D31
DRAM configuration
Permission of cache (L1 cache only)
Memory clear
Transition to real mode and copy of BIOS
to RAM