Technical information

SEGA Confidential
SATURN Virtual CD System User's Manual
3
Introduction
Overview of CD Emulation System Configuration and Functions
The CD-ROM emulation system configuration is shown in Figure 1.
CD-ROM Emulation System
Virtual CD
Target Box
CD Block
Main System
Board
CD Drive
VCD I/F
CD System
Board
PC
Compatible
Figure 1 System Configuration
CD Emulation System
The CD emulation system consists of the Virtual CD system and a SEGA SATURN
target box. This system enables the emulation and testing of CD-ROM software
operations and verifies the operation of write-once disks that have been created.
Virtual CD (VCD)
After receiving commands from the CD Block, the VCD reads data from MS-DOS
files on the local hard disk or on a network and performs emulation. Hardware
consists of a PC-compatible computer and a VCD Interface (I/F) board. CD Emula-
tion on the PC completes the VCD system.
CD Block
The CD Block is located between the Virtual CD and the main system board and
contains the hardware and firmware that receives input from the target box, trans-
mits commands to the PC and handles data back from the PC.
VCD I/F Board
The VCD I/F Board is installed in the PC’s expansion slot and acts as the interface
between the CD Block and the PC itself.