This Yamaha computer is specialised in music and sound production. In fact it is a classic MSX 1, but if you bought the special Yamaha synthesizer and piano keyboard, then it was clearly different. You got 48 pre-recorded sounds with a quality really surprising for that time, and as it is real synth, you could change or create you own sounds.
The YIS-503 is in fact the same computer as the Yamaha CX5M, but it has not got the SFG-01 Sound Module and MIDI interface integrated.
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please send us pictures or anything you might find useful.
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NAME
YIS-503 / Diabolik
MANUFACTURER
Yamaha
TYPE
Home Computer
ORIGIN
Japan
YEAR
1984
BUILT IN LANGUAGE
Microsoft Extended Basic (MSX Basic V1.0)
KEYBOARD
QWERTY Mechanical keyboard, 73 keys
CPU
Z80A
SPEED
3,6 Mhz
RAM
32 kb (up to 64 kb)
VRAM
16 kb
ROM
32 kb BASIC/BIOS ( MSX BASIC V1.0)
TEXT MODES
Mode 0 : 40 x 24 Mode 1 : 32 x 24
GRAPHIC MODES
Mode 2 : 256 x 192 with 16 colors (Hires mode) Mode 3 : 64 x 48 with 16 colors (Multi colour mode) 32 sprites
COLORS
16
SOUND
General Instruments AY-3-8910 Programmable Sound Generator 3 channels, 8 octaves
I/O PORTS
2 joystick sockets, 1 cartdridge slot, Tape-recorder plug (1200/2400 bauds), TV output, Centronics interface, Side bus (60 pins), Expansion bus
OS
MSX DOS
POWER SUPPLY
External PSU
PERIPHERALS
SFG-01 and SFG-05 sound modules, Disk drive, Magnetic cards reader, Piano keyboards, and more...
(France, august 85)
