DIGITAL-LOGIC SM800/900DK, Technical User'S Manual

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DIGITAL-LOGIC AG
SM800/900DK Technical Manual V1.2B
41
10. D
IAGNOSTICS
10.1. Post Codes
DIGITAL-LOGIC LX800/900 Post Codes
Info: Informational code only
Error: Error code. The system halts
Info/Error: Informational code but the system can halt.
Checkpoint Description Type
00h Initialize CS5536 specific registers Info
02h Initialize some cpu registers Info
03h Initialize ES and FS as Big Real Mode segments Info
05h Test CPUID instruction Info
06h Setup DRAM Memory controller
Detect installed DRAM modules
Detect memory size
Detect memory timing
=> See Post 7xh
Info
07h Set up a stack for further post tests.
=> See Post 90h, 9Eh, 9Fh Info
08h Perform memory test
=> See Post 0Bxh Info
09h Copy ROM (F000:0 - F000:FFFF) into SDRAM (F000:0 - F000:FFFF)
and disable write access to shadow memory. Info
0Bh Initialize L1 and L2 cache
=> See Post 0CEh Info
0Ch Core Logic initialization: Host bridge
Setup GLPCI registers
Enable Clock Gating
Setup AES engine
Apply CPU bugfixes
=> See Post 0E8h
Info
0Dh Platform specific chipset Init Info
0Eh Initialize Super I/O Info
0Fh PC/AT Compatibility stuff
Initialize DMA controller to AT compatible mode
Clear the first 640kB of memory (to make DOS happy)
Clear 2nd MB of memory (to make DOS happy)
Info
10h Set up software interrupt vectors
Setup interrupt vectors
Program interrupt controller for PC usage
Initialize Timer
Info
11h store how much memory is available to the OS Info
12h Decompress ROM images and initialize them
Soft A20
Power Management
Soft VGA
Virtual Audio
SMM system
=> See post 0Dxh
Info
13h Check for PLL reset and set PLLs if not done already
=> See port 0Axh Info
14h Wakeup the keyboard controller Info
16h Initialize the BIOS Data Area Info