Technical information

SEGA Confidential

[A] EXEC [B] SKIP

CD-ROM DIRECTORY CHECK

VCD CHECK PROGRAM

VER 1.0

[A] EXEC [B] SKIP

[Opening Screen] [1. CD-ROM Directory Read]

Startup Screen

Press the A button to move to the first test item.

1. CD-ROM Directory Read

The ISO9660 format directory is displayed. Only the first 8 entries of the root

directory (actually 6 entries since 8 entries include self and parent) are displayed.

Directory attributes are also displayed.

Display of OK indicates a legal file name and size. COMPLETE is displayed at

the bottom of the screen to indicate that the check has ended. If an error is de-

tected, an error message is displayed.

CD-ROM DIRECTORY CHECK

ROOT DIRECTORY (FIRST 6 ENTRIES ONLY)

NAME SIZE ATTR

. 2048 DIR

.. 2048 DIR

ABCDEFGI.DAT 10740

D10 1300000

FILENAME 0K

FILE SIZE 0K

COMPLETE [A]NEXT

CD-ROM DIRECTORY CHECK

ROOT DIRECTORY (FIRST 6 ENTRIES ONLY)

NAME SIZE ATTR

. 2048 DIR

.. 2048 DIR

BADFILE.DAT 10

DADDIR 2048 DIR

DATA.DAT 1000000

README.DAT 323

FILE NAME NG

FILE SIZE --

NG [A]NEXT

[2. CD-ROM Data Read] [3. CDDA Play]

2. CD-ROM Data Read

Since the contents of

ABCDEFG1.DAT and D10 are known, a check is performed

by reading and comparing data. When finished, COMPLETE is displayed at

the bottom of the screen to indicate that the read has been completed. The

program then waits for button A to be pressed.