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Y > YAMAHA  > C1   


Yamaha
C1

The Yamaha C1 was released in 1987 and is basically a 80286 processor based PC with 8 built in MIDI ports for use in applications where there are many MIDI instruments to address.

By 1987 some machines which were capable of responding on multiple MIDI channels were appearing, and some earlier machines could only function in "omni" mode which meant that they needed a whole 16 channel port to themselves or they would play every time a note intended for another instrument was sent.

Since MIDI information is fairly 'slow' in respect to what even a about 10Mhz computer can handle 8 output ports with buffers wasn't a difficult thing to pull off for even an old 286 apparently.

Various DOS applications were included, among them the Voyetra Sequencer which was set up to run all 8 ports.

__________

Contributors : Bob Weigel (picture, info), Gareth Qually (info, specs)

Javier Z. reports:
Yamaha C1 Music Computer was used by Kraftwerk in "Electric Cafe".



We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.

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The day my C1 died was a sad one indeed. Loved the ease of the Voyetra sequencing software, and not having to use an outboard midi patchbay back then was awesome. With 8 outs and 2 ins I easily ran my entire studio, including:

Juno 106
Cheetah MS-6
Cheetah MS800
Oberheim Matrix 6R
Roland D110
Yamaha SPX-900
ART SGX2000
+ a pair of midi-CV boxes to drive older analogs.

Would love to have that rig again...

          
Tuesday 8th February 2011
Ted

Kraftwerk''s Electric Cafe was recorded during 83-86 with the Synclavier. Two C1 machines were used on stage in late 90''s only

          
Wednesday 5th May 2010
Gmez

Does anyone want a Yamaha C1 music computer? It runs, crt display seems a little flaky. It''s been in storage for 20 years.

          
Tuesday 19th September 2017
Steve (USA)

 

NAME  C1
MANUFACTURER  Yamaha
TYPE  Portable
ORIGIN  Japan
YEAR  1987
BUILT IN LANGUAGE  None
KEYBOARD  88 keys with numeric keypad and arrow keys
CPU  Intel 80286
SPEED  switchable clock 10/8 MHz
RAM  640 Kbytes main, 512 Kbytes extension
ROM  64 Kbytes
TEXT MODES  40 or 80 columns x 25 lines
GRAPHIC MODES  CGA, 640 x 400
COLORS  Monochrome blueish LCD display
SOUND  Buzzer
SIZE / WEIGHT  394(W) x 382(D) x 82(H) mm / 8.2 kg (18 lb 2 oz)
I/O PORTS  Time Code In, Time Code Out (both via RCA ports), 2 x serial ports, Expansion Card Slot, 8 x MIDI OUT ports, 2 x MIDI IN ports, 1 x MIDI THRU port, Digital RGB out port, CGA or Monochrome (Hercules compatible) mode
BUILT IN MEDIA  3.5'' Floppy disc drive (1.44 MB) + 20 MB hard disk
OS  MS-DOS 3.3
POWER SUPPLY  Built-in power supply
PRICE  Unknown


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