The National Panasonic JB-3000

The National Panasonic JB-3000

The National Panasonic JB-3000 or also known as the “Matsushita MyBrain 3000” from 1982 is a bit of an odd duck of a vintage computers. You can find some information about it, but not as much like for other vintage computers.

  • Type Panasonic JB-3001E
  • Manufacturer Matsushita | Panasonic
  • Origin Japan
  • Serial 006089
  • Processor Intel 8088 @ 4.77MHz
  • Architecture 16 Bits system
  • Address bus 20 Bits
  • 96K RAM build-in of which 32K dedicated for video memory, fully expandable to 256K in total
  • Additional RAM JB-3001-04 module of 128K
  • 16K ROM build-in
  • 2x PROMs Mitsubishi MSL2764K (64K) PROMs
    • 1x JB-3000 PMPU PROM with “75” written on it in slot #7
    • 1x JB-3000 PMPU PROM with “A60” written on it in slot #6
  • Supporting Operating Systems MS-DOS, CP/M-86 compatible, BASIC A, BASIC-86, compiled BASIC, Cobol, Fortran, and Pascal.
  • Color output 320×200 resolution with 8 colours
  • Monochrome output 640×400/ 640×400 Text and graphics can be mixed
  • Display output is 80×25 or 40×25 when using double-size characters
  • Optional ports RS-232C and IEEE488
  • Build-in port for a printer
  • The keyboard has 16 programmable functions!
  • Sound output is a single voice with 7 octave
  • Disk drive is a 5.25″ dual floppy drive system, originally it had an 8″ dual floppy drive system

Documentation

Sources

The keyboard (Azerty FR)

The 128KB memory Expansion module

The 5.25″ disk controller card

The JB-3034 5.25″ disk controller drive

The JB-3062 : CRT monitor

The JB-3001 : Logic Controller Unit

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