Technical information

SEGA Confidential
56
5.2 Release Program
VCDEMU.EXE
Command: VCDEMU
Command name: VCD Emulator
Function: Performs virtual CD emulation. This software is capable of forcing error
conditions during emulation.
Format: VCDEMU body of file name [-f RTI file name] [-l log file
name] [-j jumper setting position] [-u revise informa-
tion file]
Description: When all option settings are omitted, the following data files with separate
file extensions are used:
.scr Script file
.dsk Disc image file
.rti Default disc image data file
Note that the log data file is not created.
When the -f option is used, the file name for the disc image data file will be
the name specified with the option.
When the -l option is used, the log data file is created with the specified
name.
The -j option is used to set up the VCD interface board's jumper numbers.
The values are the same as the VCDIO configuration parameters.
It is possible to intentionally simulate data transfer errors during the transfer of
MODE1 and MODE2 data by hitting the "S" key on the keyboard.
Example: VCDEMU TSTGAME
VCDEMU Error Messages
The error messages displayed by the Virtual CD emulator are explained below. Two
asterisks (**) denote numbers and four asterisks (****) denote a text string. Error
messages are displayed in red characters on-screen.
Cannot allocate read buffer
Unable to allocate a buffer for reading data files.
Cannot find RTI file ****
Unable to find the specified RTI file.
Cannot find the beginning of TOC info.
Unable to find the keyword within a specified RTI file that marks the start
of TOC information.