Toshiba Portege R300 Maintenance Manual page 74

2 Troubleshooting Procedures
Table 2-4 Debug port (Boot mode) error status (8/10)
D port status
F115H IRT_SYSMEM_CHK_END
EXT_MEM_CHECK
F116H IRT_EXTMEM_CHK_END
Exception check in the protected
mode
INIT_SYS_MEM
F118H
IRT_INI_SYSMEM_END
CHK_DMA_PAGE
F119H
IRT_DMA_PAGE_END
CHECK_DMAC
F11AH IRT_CHK_DMAC_END
INIT_DMAC
F11BH IRT_INI_DMAC_END
CHECK_PRT
IRT_CHK_PRT_END
F11CH
CHECK_SIO
F11DH IRT_CHK_SIO_END
BOOT_PASSWORD
2-32 [CONFIDENTIAL]
Inspection items Details
(Check of exception in the protected mode)(Boot)
Dport=F117h when error occurs
Initialization of conventional memory (Reboot)
(Check of DMA Page Register) (Boot)
(Initialization of DMAC) (Boot)
(Initialization of DMA) (Boot)
(Check of printer existence) (For models supporting
Printer port)
(Check of SIO) (model supporting SIO)
(Check of password)
Waiting for FDD initialization completion
(In the case of "Reboot")
Waiting for HDD initialization completion
Check of key input during IRT (waiting for KBC
initialization completion)
Initialization of ATA priority
(In the case of "Boot")
BM loading process (for models supporting
fingerprint authentication)
Initialization of BM (for models supporting
fingerprint authentication)
Check of key input during IRT (waiting for KBC
initialization completion)
Input of password
BM releasing (for models supporting fingerprint
authentication)
PORTEGE R300 Maintenance Manual (960-591)