Toshiba M30-35 manual Debugging port boot mode status 1/7

2.4 System Board Troubleshooting 2 Troubleshooting Procedures

5.Execute GETDPORT.COM in the text menu in CPU REAL mode. (Insert the FD for starting D port into FDD and input “FD starting drive:>dport”.)

The D port status is displayed in the following form;

6.When the D port status is FFFFh (normal status), go to Procedure 3.

7.When the D port status falls into any status in Table 2-4, execute Check 1.

	Table 2-4 Debugging port boot mode status (1/7)
Debug Port	Description
0000h
0080h	Initialize the chipset
0081h	Initialize the bridge
0082h	Initialize the CPU
0083h	Initialize system timer
0084h	Initialize system I/O
0085h	Check for BIOS changing
0087h	Go to BIOS
0088h	Initialize Multi Processor
0089h	Set segments to 4GB
008Ah	Initialize specific HW
008Bh	Initialize PIC and DMA
008Ch	Initialize Memory type
008Dh	Initialize Memory size
008Eh	Shadow Boot Block
0090h	System memory test
0091h	Initialize interrupt vectors
0094h	Output one beep
0095h	Initialize the boot device
0096h	Reset segments to 64KB
0097h	Boot BIOS change utility

Satellite M30-35 Maintenance Manual (960-455) 2-21