Specifications

Saturn Psy-Q Installation1-11
Psy-Q Development System
If you are using a ‘Programming Box’, then you should install the Interface in a
similar manner, with the curved side facing the front of the unit.
The SCSI cable should be plugged into the Target Interface and also the host PC
SCSI Interface.
You are now ready to turn the target on and test the Target Interface.
Firmware Select
The ROM on the target interface only contains a simple downloader which is not
suitable for developing programs. Its only purpose is to install new versions of the
downloader software into the battery backed RAM of the interface.
When a new version of the downloader is installed, a checksum is calculated and
stored for future reference. As the system starts up it will calculate the checksum
from the installed downloader. If this new checksum matches the old checksum
stored, it will use the installed downloader. If the checksum does not match, if the
downloader has become corrupt for instance, then the simple downloader in the
ROM used. This will enable you to download the latest version of the downloader.
It is possible that the downloader stored in the battery backed RAM may be
corrupted in such a way that the checksum matches the new calculated value. This
could cause the downloader to crash, preventing a new downloader being installed
over it. In the unlikely event of this happening you should:
Power up your Sega Saturn.
Wait till after both the Sega Saturn and Segas logo have gone.
As the Psy-Q logo ‘mosaic effect’ starts, press RESET on the Saturn. This will flush
the corrupted downloader, allowing a new downloader to be installed.