Sony SMC-70

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The SMC-70 is a computer produced by Sony from 1982.

Sony SMC-70 Micro Computer at the Vintage Computer Festival (VCF) East 6.0, at the InfoAge Science Center

Although it resembles a home computer, it was designed for professional video generation, for example in Cable television applications, and digital video effect generation. It was the first computer that used the just invented (also by Sony) 3.5" micro floppy disk drive that later became industry standard. It had a few distinctive aspects that set it aside from many of it contemporary systems. For example it did not use a version of Microsoft BASIC, but its own Sony developed BASIC, and it could handle and display kanji characters.[1][2]

Variations and upgrades[edit]

The SMC-70G is the same computer, but with an NTSC video genlocker, while the SMC-70GP has a PAL video genlocker. With the use of the SMC-7086 supercharger you could add an 5 MHz 8086 16-bit CPU that came with 256 KB of RAM upgradable to 768K, and it could then run CP/M-86.

Technical specifications[edit]

  • Built in language in ROM :BASIC interpreter
  • Keyboard Full-stroke keyboard, 72 keys with editing and arrow keys
  • CPU Z80A
  • Speed 4.028 MHz
  • CRT controller HD46505S-1
  • RAM 64 KB
  • VRAM 32 KB + 2 KB Character RAM, 2K attribute RAM and 2K Programmable font (PCG) RAM
  • ROM 32 KB (shadow ROM) + 9K system Monitor, 22K Sony BASIC, 1K character font
  • Text mode 40 x 25, 80x25 (8 × 8 dot matrix) monochrome (any two of 16 colors)
  • Graphics modes 160 x 100 16 colors (4 pages) / 320x200 16 colors/ 640 x 200 4 colors / 640 x 400 monochrome
  • Border colors 16
  • Sound 1 voice, 5 octaves
  • I/O Ports RS 23C, Tape, Light Pen, Key Pad, Audio output, RGB Multi Out, B/W Multi Out, I/O Expansion connector, Centronics.
  • Storage devices 2 x optional 3.5 disk-drives, cassette port 1200 Bps
  • OS CP/M
  • Dimensions (Width) 366 × (height) 90 × (depth) 444 mm
  • weight 4.8 kg
  • Power Built-in power supply unit: 100V 50/60Hz