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 (2x 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
- MAME emulation = https://www.arcade-museum.com/tech-center/machine/myb3k
- Another collector = http://www.retro.co.za/ccc/Panasonic-JB-3000/
The memory Expansion module
The 5.25″ disk controller
The internal logic controller
