Sega Saturn Device Manual Supplement

SEGA Confidential
SEGA SATURN Sound Tools Manual Supplement
11
9. Sound Driver CPU Execution Times
Software DSP control is executed in 8 ms.
Software PLFO control is executed in 4 ms.
Other target programs are executed in 2 ms.
10. Explanation of the Rear Panel LEDs on the Sound Target Box
The LED’s flash in sequence from LED 1 to LED 8 while the boot ROM is
starting up. This operation is momentarily interrupted while data is being transferred
using the SCSI interface but is restored upon completion of the transfer.
When the target program is executed after being transferred, LED 1 flashes, which
confirms that the CPU is operating normally.
The flashing of other LED’s while LED 1 is flashing (CPU is operating normally)
indicates the following.
LED 2: CPU is operating at its maximum capability.
LED 3: Interrupts for BGM decompression (normally flashes) in progress.
LED 4: Ignore
LED 5: Ignore
LED 6: Ignore
LED 7: MIDI input from MIDI-IN2 on the board.
LED 8: MIDI input from MIDI-IN1 on the board.

Sega Saturn Specifications

General

Manufacturer	Sega
Type	Home video game console
Generation	Fifth generation
Media	CD-ROM
Resolution	320×224 to 704×480
Controller Ports	2
Best-selling Game	Virtua Fighter 2
Units Sold	9.26 million
CPU	Two Hitachi SH-2 32-bit RISC @ 28.6 MHz
Graphics	VDP1 and VDP2 video display processors
Sound	Yamaha FH1 DSP
Memory	2 MB RAM, 1.5 MB video RAM, 512 KB sound RAM
Dimensions	260 mm × 230 mm × 83 mm