User Guide
Page 31
ROG Crosshair IV Formula 2-5 If an error is found, the LED next to locate the root problem within seconds. This user-friendly design provides an intuitive way to the error device will continue lighting until the problem is solved. 7. POST State LEDs POST State LEDs check key components (CPU, DRAM, VGA card, and HDD) in sequence during motherboard booting process.
ROG Crosshair IV Formula 2-5 If an error is found, the LED next to locate the root problem within seconds. This user-friendly design provides an intuitive way to the error device will continue lighting until the problem is solved. 7. POST State LEDs POST State LEDs check key components (CPU, DRAM, VGA card, and HDD) in sequence during motherboard booting process.
User Guide
Page 39
Hardware monitoring errors can occur if you fail to plug this connector. • This connector is in place, connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN. • DO NOT forget to connect the CPU fan connector! 5. ROG Crosshair IV Formula 2-13 When the fan and heatsink assembly is backward compatible with old 3-pin CPU fan.
Hardware monitoring errors can occur if you fail to plug this connector. • This connector is in place, connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN. • DO NOT forget to connect the CPU fan connector! 5. ROG Crosshair IV Formula 2-13 When the fan and heatsink assembly is backward compatible with old 3-pin CPU fan.
User Guide
Page 167
Test F000h segment shadow to E000 & F000 shadow RAM. Detect CPU information including brand, type and CPU level (586 or 686). Invoke video BIOS. Initialize VGA BIOS 1. ROG Crosshair IV Formula A-1 Initialize IO devices. Enable keyboard interface. 1. Use walking 1's algorithm to check ...then check for Super I /O chips. Initialize clock generator. Initialize INT 09 buffer 1. Program CPU internal MTRR (Pentium class CPU) for ESCD & DMI support. Clear CMOS error flag 1. Initialize 8042 self-test 1. Example: onboard IDE controller. 4. Auto detect flash type...
Test F000h segment shadow to E000 & F000 shadow RAM. Detect CPU information including brand, type and CPU level (586 or 686). Invoke video BIOS. Initialize VGA BIOS 1. ROG Crosshair IV Formula A-1 Initialize IO devices. Enable keyboard interface. 1. Use walking 1's algorithm to check ...then check for Super I /O chips. Initialize clock generator. Initialize INT 09 buffer 1. Program CPU internal MTRR (Pentium class CPU) for ESCD & DMI support. Clear CMOS error flag 1. Initialize 8042 self-test 1. Example: onboard IDE controller. 4. Auto detect flash type...
User Guide
Page 168
...Display PnP logo Initialize Onboard IO devices. Detect & install co-processor New CPU installed Execute EZ Flash CPR error Fan error UCODE error Floppy error Keyboard error HDD error CMOS error Mouse error HDD smart function error Hard monitor error AI NET error Case open A-2 Appendix: Debug code table Test 8259 functionality. Initialize USB Test...CACHE SET CHIP AUTO CFG INIT FDC DET IDE COM/LPT DET FPU CPU CHG EZ FLASH CPR FAIL FAN FAIL UCODEERR FLOPYERR KB ERROR HD ERR CMOS ERR MS ERROR SMARTERR HM ERROR AINETERR CASEOPEN Description Test 8254 Test 8259 interrupt mask bits for channel ...
...Display PnP logo Initialize Onboard IO devices. Detect & install co-processor New CPU installed Execute EZ Flash CPR error Fan error UCODE error Floppy error Keyboard error HDD error CMOS error Mouse error HDD smart function error Hard monitor error AI NET error Case open A-2 Appendix: Debug code table Test 8259 functionality. Initialize USB Test...CACHE SET CHIP AUTO CFG INIT FDC DET IDE COM/LPT DET FPU CPU CHG EZ FLASH CPR FAIL FAN FAIL UCODEERR FLOPYERR KB ERROR HD ERR CMOS ERR MS ERROR SMARTERR HM ERROR AINETERR CASEOPEN Description Test 8254 Test 8259 interrupt mask bits for channel ...