| 2 Troubleshooting |
| 2.4 System Board | ||
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| Table | Printer port LED boot mode status (1/3) | ||
| LED Status | Test Item |
| Description |
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| (Hexadecimal) |
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| 0H | DIAG_SYSTEM_INIT |
| Boot started,read the cmos data for makesure |
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| main board power is stable |
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| 1H | DIAG_A20_DISABLE |
| Disable A20 through A20 |
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| 2H | DIAG_INIT_CHIPSET |
| Initialize ChipsetSet,load chipset default |
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| size chache RAM |
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| 3H | DIAG_TEST_RAM |
| send patten for test the basic 640k RAM |
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| 4H | DIAG_MOVE_BB_LOADER |
| Move boot load segment into the RAM |
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| 5H | DIAG_EXECUTE_IN_DRAM | program execution from DRAM |
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| 6H | DIAG_USER_FLASH_CHECK | Test print port for check |
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| crisis option is enable or not |
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| 7H | DIAG_SHADOW_BIOS |
| Decompress the system BIOS, and |
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| Shadow System BIOS to RAM |
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| 8H | DIAG_CHECKSUM_BIOS |
| Checksum System BIOS ROM |
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| 9H | DIAG_NORMAL_BOOT |
| Jump to the reset point |
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| AH | DIAG_CRISIS_BOOT |
| Proceed with Crisis Boot,first initial |
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| superio and boot device |
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| FH | DIAG_FATAL_ERROR |
| Fatal Error,like the RAM error or ROM error |
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| CCH | DIAG_CRISIS_BEGIN |
| Start process the Crisis recovery procedure |
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| 99H | DIAG_RESUME_RAM_ERROR | Resume SMRAM not Found |
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| 10H | DEBUG_MISC_RESET |
| Disable internal cache ram,and |
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| reset cpu |
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| 11H | DEBUG_CS_FAST_A20_RESET | Turn off FASTA20 for post,and check have keyboard |
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| controllor |
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| 12H | DEBUG_POST_SIGNAL_POR | Initial PIC enable INT and Signal Power On Reset |
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| 13H | DEBUG_CS_CHIP_INIT |
| Initialize the Chipset and hook PCI BIOS |
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| 14H | DEBUG_OEM_ISA_VGA_SEARCH | Search For ISA Bus VGA Adapter, from address c000 |
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| to e000 |
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| 15H | DEBUG_HWIO_SETUP_CTC1 | Initialize Counter and Timer chip |
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| 16H | DEBUG_OEM_SET_CMOS_REGS | User register config through CMOS |
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| 17H | DEBUG_CS_MEMORY_SIZE | Size Memory, and detect memory timing, |
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| setup memory controllor |
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| 18H | DEBUG_POST_TEST_RAM |
| Initialize and test the first 64k memory |
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| 19H | DEBUG_GEN_TEST_ROMS |
| checksum the system ROM |
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| 1AH | DEBUG_HWIO_RESET_INTS | Reset PIC's status |
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| 1BH | DEBUG_VIDEO_VIDEO_INIT | Initialize Video Adapter(s),and check vga rom and |
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| vga ram |
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| 1CH | DEBUG_VIDEO_EQUIP_INIT | Initialize Video (6845 Regs),set display mode |
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| 1DH | DEBUG_VIDEO_COLOR_INIT | Initialize Color Adapter,and setup display reg. |
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| 1EH | DEBUG_VIDEO_BW_INIT |
| Initialize Monochrome Adapter,and setup display |
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| reg. |
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| 1FH | DEBUG_HWIO_TEST_DMA_PAG | Send out some value,to test 8237A Page Registers |
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TECRA S1 Maintenance Manual |
