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SNES CD-ROM
Console Information

In the mid-1980s, Sony Researcher Ken Kutaragi bought
his daughter a Nintendo Famicom
and was disappointed by the system's sound chip and use of cartridges
rather than floppy disks. Having knowledge and research in this
field, he independently approached Nintendo to see if they could
use his research team's floppy disk technology. Nintendo chose not
to, but were still interested in getting a Sony sound chip made
for its upcoming 16-bit console.
Kutaragi did not have the authority to make deals
on behalf of his company so he developed a sound chip in secret,
only revealing it to his boss, the head of Research and Development
at the time. Nintendo then wanted a joint press release with Sony
to announce the use of Sony's chip in their new system. When the
Sony senior executives found out that Kutaragi had been helping
a rival company, they were quite angry. Sony's president, Norio
Ogha, however, gave permission for Nintendo to use the chip as it
would bring more profits into his company.
In 1988, Nintendo contracted Sony to create a Super Disc drive
for the upcoming Super Famicom
(The 16-bit console mentioned above) in the tradition of the Famicom
Disk System. When Nintendo began planning for the Super Famicom's
32-bit successor, they again got help from Kutaragi who suggested
the use of CD-ROMs. At this time, most of Sony's executives were
still reluctant to help a rival company and so Kutaragi asked Ogha
to create a special group for the Nintendo project, much like he
had previously done with the Sony Music Division. He approved, and
so production soon began.
Previously, it was uncertain whether this project would be a standalone
console or an add-on for the Super Famicom and whether it would
be 16-bit or 32-bit. By 1991, they were certain of what the console
was going to be. It would be a 16-bit add-on for the Super Famicom
that sits underneath the system and uses CDs. This was to compete
with the Sega Mega CD, which had been announced that same year and
due for release in December.
Sony did, however, make a few versions of the system (by this time,
called the PlayStation). One was the SNES-CD just mentioned, another
was a standalone system that could play its own CD games and SNES
games (Sony later developed this into their own PlayStation, but
this original version is not the same as the PlayStation we know
today), and there was also a chipset that could be re-manufactured
by anyone that was licensed to do so.

Nintendo intended that the CD-ROMs would be encased in a custom
plastic caddy complete with a SNES-style lockout chip (The Nintendo
Disc (ND) as shown above) to ensure they had full control over the
game licensing. But Sony wanted to put the lock-out chip inside
the CD-ROM drive controller, which is inside the machine, and leave
the games as normal CDs (i.e. no plastic caddy). There was nothing
that Nintendo could do. Their original agreement with Sony from
1988 granted Sony the right to license all CD-based games for the
system. And so, Sony quietly did, and announced the system at the
Summer CES (Consumer Electronics Show) of 1991 in Chicago, proclaiming
that they intended to broadly license it to the whole software industry.
Nintendo CEO, Hiroshi Yamauchi, had no intention of losing control
over this process and so he went and made an agreement with Sony's
rival, Philips, to produce the system instead.
The next day at a 9am public press conference, Nintendo's Howard
Lincoln announced that he had signed a deal with Philips, stating
that Philips would offer superior workmanship since they invented
CD-ROM technology. The real reason, of course, was to ensure full
control over the game licensing. Sony tried to make Nintendo change
their minds by threatening to sue them. Nintendo said they would
do some negotiating, but this came a long time later on.
Nintendo and Philips were now developing a SNES CD-ROM system that
is to be compatible with the upcoming Philips CD-i. Nintendo would
have the full control over licensing that they wanted and the discs
would be encased in the plastic caddies, as announced by Nintendo
at CES 1992. Philips got a special license deal with Nintendo that
allowed them to use some of Nintendo's characters in games they
made. This system was to be released by Christmas 1992 (for a price
of US$200), but this date was later changed to early 1993. Meanwhile
at Sony, they were still working on their own PlayStation and announced
it at the Tokyo International Electronics Show in October 1991.
At this time, their system was still going to be compatible with
SNES games as well as their own CD games and CD software, of which
they announced a few educational titles at the time of announcing
the console. As mentioned above, though, this PlayStation was not
the same as the PlayStation we know today, in fact the PlayStation
we know today is a completely rebuilt console.
As Nintendo had said, they were going to do some negotiating with
Sony. They had to - Nintendo's top-selling system, the SNES, relied
on the chip made by Sony and any falling-out between the two companies
would jeopardise the further production of SNES consoles. It took
a bit of persuading from Nintendo's licensees, but they finally
did come to do some negotiating with Sony and came to an agreement
in October 1992. The agreement was for a new SNES CD-ROM add-on,
this time to be made by Nintendo, Sony and Philips and called the
SNES Nintendo Disk Drive (a.k.a. Philips CD-ROM XA). The agreement
allowed Nintendo to control game licenses and Sony could control
the licenses for other software, like the educational programs planned
for the PlayStation. It was also decided that the system would be
32-bit, not 16-bit and still compatible with the CD-i.
The new system's technical specifications were released in April/May
1993 and the release date was early 1994 (the announced price was
US$299). The system was to be attached via the SNES expansion slot
and worked by placing the "system cartridge" into the
cartridge slot of the SNES. This cartridge contained a chip that
handled the communication between the SNES and the SNES CD-ROM's
RAM by using a system called HANDS (Hyper Active Nintendo Data-transfer
System).
None of these systems made it for a number of reasons. The various
mix-ups and legal wrangling between the companies caused great delays
in production. There were also development problems because of the
SNES's slow CPU (remember that the SNES has a slower CPU than the
Mega Drive and so it would
have been harder to interface the SNES and SNES CD-ROM than it was
for Sega with the Mega Drive and Mega CD), causing delays. And finally,
when things seemed okay, the SNES's Super FX chip came into use
and so the system had to be upgraded to better the chip. Nintendo
didn't want to continue paying for development when they could build
a new console in less time. And so there was no CD add-on released
for the SNES and Nintendo never got to make a 32-bit console to
compete with the other 32-bit consoles of the mid-1990s, but instead
made the Nintendo 64.
In the end, Sony went on to create their own PlayStation - rebuilt
from the ground up, Philips made the CD-i and, using the license
they had obtained earlier, got 1 Mario and 3 Legend of Zelda games
made for their system with no involvement from Nintendo. And there
are a number of various systems around that never made it past prototype
stage.
SNES CD-ROM (First Philips model) Technical Specifications
- RAM: 8 Mbit
- Sub-memory: 2 Mbit
- ROM: 2 Mbit
- Min. access time: 0,75 sec
- Max. access time: 1,3 sec
- Co-CPU: Yes
- Video: Yes
- CD-I compatible: Yes
SNES CD-ROM (Philips CD-ROM XA) Technical Specifications
- Co-CPU: 32-bit RISC
- CPU speed: 21.477 MHz
- RAM: 8 Mbit
- Sub-memory: 1 Mbit
- ROM: 2 Mbit
- Cache: 8 Kbit
- Access time: 0,7 sec
- Data transferring speed (between the SNES and the CD-ROM): 150
or 300 Kbit/sec
- Colours: 16.7 million
- CD-I compatible: Yes
For the Sony PlayStation Technical Specifications for both their
first model announced 1991 and their final model, released 1994,
see Sony PlayStation.
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