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Virtual CD System User's Manual / Chapter 5 CD Emulation Related Tools

5.3 TOC Information Diagnostic Tool TOCCHK

5.3.1 Overview

TOCCHK checks the TOC file (VCDMKTOC output file "~ .TOC") and outputs a diagnostic message to the standard output for any abnormalities as TOC information.

Check item
(1) Track size check (It must be 4 seconds or more)
(2) Pre-gap size check (It must be 2 seconds or more)
(3) Post gap size check (It must be 1 second or more) ※caution
(Four) Top pose of audio track (It must be 2 seconds or more)

※caution
The post gap here is what is shown in the CD-ROM XA standard.
According to the CD-ROM standard (YELLOW BOOK), a post gap of 2 seconds or more is required at the end of the data track preceding the audio track, but this post gap is checked because the information is not reflected in the TOC file. not.

Make sure that the following description is at the end of the data track in the virtual CD script.

Data track just before CDDA ｜:
｜ PostGap 150 ; <----- Confirm post gap of 2 seconds or more ↓ EndTrack
━━━ Track CDDA
｜ Pause 150
｜ FileSource ~ .DAT
｜ EndFileSource
↓:
CDDA track

5.3.2 Command specifications

TOCCHK TOC file name (extension ".TOC" can be omitted)

command:
TOCCHK

Command name:
TOC file diagnostics

Format:
SWAP △ file name

argument:
Filename: TOC file name created by VCDMKTOC.EXE

option:
none

function:
Diagnose the specified TOC file.

Example of use:
To check the TOC file "SAMPLE.TOC" created by VCDMKTOC.EXE and output the result to the check file "SAMPLE.TCK", do as follows.


C: \> TOCCHK SAMPLE.TOC> SAMPLE.TCK
(It is assumed that you are working in the root directory of drive C.)

5.3.3 Output format (sample)

TOCCHK.EXE Ver.1.02 1995-04-25
Copyright (c) SEGA ENTERPRISES, LTD. 1995
Copyright (c) CSK Research Institute Corp. 1995

OFFSET: CONTROL TNO / X FORM TIME DUMP (HEX)
 0000H: DATA --- LeadIn MODE1 00:00:00 41 00 00 02 00 00 00 00
 0008H: DATA --- 01/00 MODE1 00:00:00 41 01 00 02 00 00 00 00
 0010H: DATA --- 01/01 MODE1 00:02:00 41 01 01 02 00 00 02 00
 0018H: AUDIO -2- LeadOut MODE1 00:22:52 01 AA 01 02 00 00 22 52
               ||| | | | | | | | |
               ||| | | | | | MM: SS: FF
               || +-e: Emphasis flag | | | | +-ZERO
               | +-2: 2ch / 4: 4ch | | | +-FORM
               +-c: digital Copy permitted | | +-X
                                              | +-TNO
                                              + --CONTROL / ADR
DIAGNOSIS
V01.TOC (0018H): FORM is not consistent with CONTROL
    | | |
    | | + --- Message body | + --- OFFSET
    + ---------- File name

Message list

(1) TNO = ?? size XXX <300 (4 sec)
The size of the truck is 4 seconds or less.

(2) POST-GAP missing
There is no post gap.
The post gap here is what is shown in the CD-ROM XA standard.
It is judged that the pre-gap start is when the FORM byte does not change even if TNO → TNO + 1 and X → 0 change, and the post-gap ends when the FORM byte changes.

(3) POST-GAP smaller than 1 sec
The post gap is 1 second or less. (CD-ROM XA standard)

(4) PRE-GAP missing
The Form byte changed even though there was no pre-gap.

(5) PRE-GAP smaller than 2 sec
The pre-gap is 2 seconds or less. (CD-ROM XA standard)

(6) PAUSE Missing
There are no pauses in the audio track.

(7) PAUSE smaller than 2 sec
The pre-gap is 2 seconds or less. (CD-ROM XA standard)

(8) LeadIn Control (?? H) is not DATA
Control in LeadIn area is not in DATA format. (Saturn format)
(For music CDs, it will be in AUDIO format)

(9) LeadIn FORM (?? H) is not CD-ROM
The FORM of the LeadIn area is not in CD-ROM format. (Saturn format)

(10) LeadIn ATIME is not 00:00:00
ATIME in the LeadIn area is not 00:00:00.

(11) Illegal Disc Type (?? H)
Disc Type of LeadIn area is not CD-ROM / CD-ROM XA / CD-I format.

(12) Illegal TNO / X = (?? / ??) at PAUSE
The TNO / X of the first pose is not 01/00. (Saturn format)

(13) Illegal Control (?? H) at PAUSE
Control of the first pose is not in DATA format. (Saturn format)

(14) Illegal ATIME ??: ??: ?? at PAUSE
ATIME of the first pose is not 00:00:00. (Saturn format)

(15) Illegal TNO / X = (?? / ??) at 1st TRACK
The TNO / X of the first track is not 01/01. (Saturn format)

(16) Illegal CONTROL (?? H) at 1st TRACK
The CONTROL of the first track is not in DATA format. (Saturn format)

(17) Illegal ATIME ??: ??: ?? at 1st TRACK
ATIME of the first track is not 00:02:00. (Saturn format)

(18) Illegal CONTROL (?? H)
CONTROL is an unacceptable value. (Saturn format)

(19) TNO / X = (?? / ??) Sequence error
Track number / index is not in ascending order.

(20) ATIME = (??: ??: ??) Sequence error
ATIME is not in ascending order.

(21) FORM is not consistent with CONTROL
There is an inconsistency between the FORM byte and CONTROL.
(AUDIO for CDDA, DATA for others)

(22) Illegal FORM (?? H)
: The value of Form byte is invalid.

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★ PROGRAMMER'S GUIDE ★ Virtual CD system
Copyright SEGA ENTERPRISES, LTD ,. 1997