Technical information

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Option /c Related Error Messages

———: Disposition pattern for Channel Interleave

nnnn]nnn:nnn:nnn:nnn:nnn:nnn:nnn:nnn:nnn:nnn:nnn:nnn:nnn:nnn:nnn:nnn:

nnnn]nnn:GAP:nnn:nnn:nnn:GAP:nnn:nnn:nnn:GAP:nnn:nnn:nnn:GAP:DMY:DMY:

VCDUTL.EXE

Command: VCDUTL

Command name: Performs partial update of CD image.

Function: Updates files in the CD image generated by VCDBUILD.

(1) An ISO file in the CD image is replaced with a specified DOS file, and the

CD image is updated. The ISO file can either be file interleaved or

channel interleaved. This enables faster emulation without the need for

rebuilding the entire disc image.

(2) An ISO file in the CD image is replaced with a specified DOS file, and

while the CD image remains unchanged, the updated disc data is created.

The ISO file can be file interleaved, but channel interleaved file is not

updated. Only the updated part is emulated under direct DOS file access

mode.

Note: In the case of (1), the replacement DOS file must be the same size or smaller

than the DOS file that is replaced. If the size of the new file is larger than the

old file, an error message is displayed and the image is not updated. In

addition, any DOS files (with the exception of MPEG and CDDA files) can be

updated.

There are no particular restrictions for item (2).

Format: VCDUTL projectfilename, ISOfilename, oldDOSfilename,

newDOSfilename [-f updatedatafilename]

Description: • projectfilename:

Project file used when creating the CD image.

• ISOfilename:

File name from the CD image to be updated.

• oldDOSfilename:

File name from the ISO files to be updated.

• newDOSfilename:

Name of the file that replaces the old DOS file.

• updatedatafilename:

Rather than updating the entire CD image, an update data file is gener-

ated. This file contains the updated information that is used by the VCD emula-

tor.