Troubleshooting
Problem
During POST, the computer displays the status of the components being tested in the form of Checkpoint (CP) codes in the upper right-hand corner of the screen. The following is a list of the CP codes followed by the routine in process and the boot mode.
Resolving The Problem
During POST, the computer displays the status of the components being tested in the form of Checkpoint (CP) codes in the upper right-hand corner of the screen. The following is a list of the CP codes followed by the routine in process and the boot mode.
| CP Code | Routine | Boot Mode |
| 01 | Test CPU Regs | Cold |
| 02 | Wait for RTC | Cold |
| 04 | Init Timer 0 | Cold+Warm+SAD |
| 05 | Test DMA | Cold+Warm+SAD |
| 06 | Test Page Regs | Cold+Warm+SAD |
| 07 | Verify Refresh | Cold |
| 08 | Enable Parity | Cold+Warm+SAD |
| 09 | Clear first 64 K | Cold+Warm |
| 0A | POST with Stack | Cold+Warm+SAD |
| 0B | BIOS Shadow | Cold+Warm |
| 0C | Phase 2 POST | Cold+Warm+SAD |
| 0D | Init KBD Data | Cold+Warm+SAD |
| 10 | Test DMS Locations | Cold+Warm+SAD |
| 12 | Test PICs | Cold+Warm+SAD |
| 14 | Init Vector Table | Cold+Warm+SAD |
| 15 | Init Keyboard | Cold+Warm+SAD |
| 16 | Std CMOS Checksum_NS |
Cold+Warm |
| 17 | Check Configuration | Cold+Warm |
| 20 | Test Timer Tick | Cold |
| 21 | Test Timer 2 | Cold+Warm+SAD |
| 23 | Test RTC | Cold+Warm+SAD+SR |
| 26 | vpd_main | Cold+Warm |
| 30 | Shadow VPD | Cold+Warm |
| 31 | Save ID | Cold+Warm+SAD |
| 32 | Check P54C | Cold |
| 33 | Init Q Boot | Cold+Warm |
| 34 | Periph Config | Cold+Warm+SAD |
| 35 | Init Timeout Tables | Cold+Warm+SAD |
| 36 | Pos_Setup | Cold+Warm |
| 37 | TCPC | Cold+Warm |
| 38 | Find Serial Ports | Cold+Warm |
| 39 | Find Parallel Ports | Cold+Warm |
| 3A | Enable Timer Init | Cold+Warm+SAD |
| 3B | Clear Mem Size Error | Cold |
| 3C | Mfg Boot Fork | Cold |
| 3D | SignOn | Cold+Warm |
| 3E | CPU Name | Cold+Warm |
| 3F | CPU Speed | Cold+Warm |
| 40 | Enable Video | SAD |
| 41 | Size Memory Above 64 K | Cold+Warm |
| 42 | Password Not Entered | Cold |
| 43 | Test PS2 Mouse | Cold+Warm |
| 44 | Check for Mouse Buttons | Cold |
| 45 | Init KBD Flags | Cold+Warm+SAD |
| 46 | Test KBD | Cold+Warm |
| 47 | TCPC_Error | Cold+Warm |
| 48 | Mem Test Prompt | Cold+Warm |
| 49 | Test Memory | Cold+SR |
| 4A | Clear EBDA | Warm |
| 4B | Allocate EBDA | Cold+Warm+SR |
| 4C | xfer_EBDA_vars | Cold+Warm+SR |
| 4D | Set Warm Boot Flag | Warm |
| 4E | Clear Speed Bits | Cold+Warm+SAD |
| 4F | E_FLOB | Cold+Warm+SAD+SR |
| 50 | Enable System Interrupts | Cold+Warm+SAD+SR |
| 51 | C2Sec_Chk | Cold |
| 52 | Init KBD | Cold+Warm+SAD+SR |
| 53 | Check for NPX | Cold+Warm+SAD+SR |
| 54 | reset_hdctl | Cold+Warm+SAD+SR |
| 55 | FD_INIT | Cold+Warm+SAD+SR |
| 56 | Set Floppy Config | Cold+Warm+SAD+SR |
| 57 | Unlock Early | Cold |
| 58 | Init A20 | Cold+Warm+SAD+SR |
| 59 | HD Setup | Cold+Warm+SAD+SR |
| 5A | PnP_Assign Card Select Numbers |
Cold+Warm+SR |
| 5B | Verify CMOS Config | Cold+Warm+SR |
| 5C | Clear Screen | Cold+Warm+SAD |
| 5D | PnP_Assign Resources | Cold+Warm+SR |
| 5E | Init Time of Day | Cold+Warm+SAD+SR |
| 5F | Check for Locked KBD | Cold+Warm+SAD+SR |
| 60 | Init Enable NMI | Cold+Warm+SAD+SR |
| 61 | Set Boot Speed | Cold+Warm+SR |
| 62 | Set KBD LEDs | Cold+Warm+SAD |
| 63 | Check for Setup Hot Key | Cold+Warm |
| 64 | CSET_AFT_MTEST | Cold+Warm |
| 65 | CSET_AFT_CMCFG | Cold+Warm+SR |
| 66 | CSET_BFR_OPROM | Cold+Warm+SR |
| 67 | Phase 2 Exit Big Real | Cold+Warm+SAD+SR |
| 90 | Disable Video | Cold+Warm+SAD |
| 91 | Phase 1 Enter Big Real | Cold+Warm+SAD |
| 93 | Init Refresh | Cold+Warm |
| 94 | Init Chip_NS | Cold+Warm+SAD |
| 95 | CSET_Init | Cold+Warm+SAD |
| 96 | Disable Parity | Cold+Warm+SAD |
| 97 | Periph Init | Cold+Warm+SAD |
| 98 | Init RTC | Cold+Warm+SAD |
| 99 | Init Timer 2 | Cold+Warm+SAD |
| 9A | Setup GPIO Addr | Cold+Warm+SAD |
| 9B | Post LED On_NS | Cold+Warm+SAD |
| 9C | CPU1 LED On_NS | Cold+Warm+SAD |
| B0 | Disable Appl 1 Local APIC | Cold+Warm |
| B3 | Display SMP Sign On | Cold+Warm |
| B4 | AP Cache Init | Cold+Warm |
| D1 | Cache Init | Cold+Warm+SAD |
| D3 | Cache Configure | Cold+Warm+SAD+SR |
| DA | EISA_Hook6 | Cold+Warm+SAD |
| DB | EISA Configure | Cold+Warm+SAD |
| DC | EISA Errors | Cold+Warm |
| E0 | Reclaim Onboard Option ROM Space |
Cold+Warm+SAD+SR |
| EA | PCI Reset | Cold+Warm |
| EB | PCI Video | Cold+Warm |
| EC | PCI Configure | Cold+Warm+SR |
| ED | PCI IDE | Cold+Warm |
| EE | PCI SCSI | Cold+Warm |
Document Location
Worldwide
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Document Information
Modified date:
23 January 2019
UID
ibm1GSMH-3EUFU5