Post-Code Description; Boot Loader; Error Beep Codes; System Bios In Shadow Ram - DIGITAL-LOGIC Microspace MSM586SEN Technical User Manual

DIGITAL-LOGIC AG
17.2

POST-CODE Description

More details are available in the separate BIOS manual on our CD and homepage !
17.2.1

Boot Loader

00h DIAG_SYSTEM_INIT
01h DIAG_A20_DISABLE
02h DIAG_INIT_CHIPSET
03h DIAG_TEST_RAM
04h DIAG_MOVE_BB_LOADER
05h DIAG_EXECUTE_IN_DRAM
06h DIAG_USER_FLASH_CHECK
07h DIAG_SHADOW_BIOS
08h DIAG_CHECKSUM_BIOS
09h DIAG_NORMAL_BOOT
0Ah DIAG_CRISIS_BOOT
51h DIAG_FATAL_SUPERIO
0Fh DIAG_FATAL_ERROR
17.2.2

Error Beep codes

F0h ERROR_BBF_NORAM
F1h ERROR_BBF_RAMBAD
02h ERROR_BBF_NOBIOS
04h ERROR_BBF_BIOSCS
0Ah ERROR_BBF_CRISISBAD
17.2.3

System BIOS in Shadow RAM

10H DEBUG_MISC_RESET
11H DEBUG_CS_FAST_A20_RESET
12H DEBUG_POST_SIGNAL_POR
13H DEBUG_CS_CHIP_INIT
14H DEBUG_OEM_ISA_VGA_SEARCH
15H DEBUG_HWIO_SETUP_CTC1
16H DEBUG_OEM_SET_CMOS_REGS
17H DEBUG_CS_MEMORY_SIZE
18H DEBUG_POST_TEST_RAM
19H DEBUG_GEN_TEST_ROMS
1AH DEBUG_HWIO_RESET_INTS
1BH DEBUG_VIDEO_VIDEO_INIT
1CH DEBUG_VIDEO_EQUIP_INIT
1DH DEBUG_VIDEO_COLOR_INIT
1EH DEBUG_VIDEO_BW_INIT
1FH DEBUG_HWIO_TEST_DMA_PAGE
20H DEBUG_KEYB_SELFTEST_CTLR
21H DEBUG_KEYB_RESET_KEYBOARD
22H DEBUG_POST_CHECK_CMOS_RAM
23H DEBUG_POST_TEST_BATT_CMOS_SUM
24H DEBUG_HWIO_TEST_DMA_CTLRS
25H DEBUG_HWIO_INIT_8237
26H DEBUG_POST_INIT_VECS
27H DEBUG_RAM_QUICK_SIZE
28H DEBUG_RAM_PROT_ENTRY_1
MSM586SEN/SEV Manual V1.5E
Boot started
Disable A20 through A20
Initialize CS
Test RAM
Move BL into the RAM
Execution in RAM
Check OVERRIDE option
Shadow System BIOS
Checksum System BIOS ROM
Proceed with Normal Boot
Proceed with Crisis Boot
ALIM5123 not detected
Fatal Error
No RAM
RAM test failed
BIOS is not shadowed
BIOS Checksum BAD
No CR code/CR bad
Some Type Of Long Reset
Turn off FASTA20 for POST
Signal Power On Reset
Initialize the Chipset
Search For ISA Bus VGA Adapter
Reset Counter/Timer 1
user register config through CMOS
Size Memory
Dispatch To RAM Test
checksum the ROM
Reset PIC's
Initialize Video Adapter(s)
Initialize Video (6845 Regs)
Initialize Color Adapter
Initialize Monochrome Adapter
Test 8237A Page Registers
Test Keyboard
Test Keyboard Controller
Check If CMOS Ram Valid
Test Battery Fail & CMOS X-SUM
Test the DMA controllers
Initialize 8237A Controller
Initialize Int Vectors
RAM Quick Sizing
Protected mode entered safely
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