Click Here to visit our Sponsor
The Latest News ! The History of Computing The Magazine Forums Collectors corner Have Fun there ! Buy books and goodies
  Click here to loginLogin Click here to print the pagePrinter ViewClick here to send a link to this page to a friendTell a FriendTell us what you think about this pageRate this PageMistake ? You have mr info ? Click here !Add Info     Search     Click here use the advanced search engine

Commodore

AMIGA 1000
Browse console museumBrowse pong museum









 

Commodore 64 goodies !

see details
ZX Spectrum goodies !

see details
Camputers Lynx logo goodies !

see details
Commodore VIC-20 goodies !

see details
Horace is not dead goodies !

see details
Back to the roots goodies !

see details
1kb memory only...sorry goodies !

see details
Odyssey 2 / Videopac Select Game prompt goodies !

see details
I love my Oric-1 goodies !

see details
Odyssey 2 / Videopac sprites goodies !

see details
Apple II goodies !

see details
Space Invaders goodies !

see details
Atari ST bomb icons goodies !

see details
H.E.R.O. goodies !

see details
www.old-computers.com logo goodies !

see details
Amiga Workbench goodies !

see details
Destroy all humanoids ! goodies !

see details
Atari ST bee icon goodies !

see details
READY prompt goodies !

see details
Space Invaders - Retro Gamer goodies !

see details
Commodore 64 boot screen goodies !

see details
MZ-700 goodies !

see details
MSX Retro Gamer goodies !

see details
Amstrad CPC-464 goodies !

see details
Oric Atmos goodies !

see details
Pixel adventurer goodies !

see details







M > MATSUSHITA  > National JR 300     


MATSUSHITA
National JR 300

The successor of the JR 200. Almost everything was changed, the computer has two CPUs to keep the compatibility with the previous models (JR-200). This machine has also a superimposition feature.

In fact it seems to be a mix between a JR-200 and a Sharp X1 system... quite strange ! But apparently this model was never really marketed.

A handheld model called JR 800 was launched few time later, but it was not compatible with the previous JR computers.

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.
ShareThis


 

 

NAME  National JR 300
MANUFACTURER  Matsushita
TYPE  Home Computer
ORIGIN  Japan
YEAR  1984
BUILT IN LANGUAGE  JR Basic 5.0 and Extended Basic
KEYBOARD  Full stroke keyboard, 98 keys, 6 function keys, separated numeric keypad
CPU  Zilog Z80A + MN1800A (6802 compatible)
SPEED  4 Mhz (Z80A)
CO-PROCESSOR  MN1544 and MN1542
RAM  82 kb
VRAM  52 kb
ROM  40 kb (Basic : 16k)
TEXT MODES  80 x 25 / 40 x 25 / 32 x 24
GRAPHIC MODES  640 x 200 / 320 x 200 / 640 x 400
COLOrsc  8
SOUND  3 channels, 8 octaves (Yamaha 8910)
SIZE / WEIGHT  Keyboard : 390 × 198 × 38 mm / 1.6kg
Main unit : 390 × 350 × 80 mm / 4.8 Kg
I/O PORTS  RGB video output, Monitor, Audio out, Expansion, Tape (600/2400 bauds), Centronics, Joysticks,
BUILT IN MEDIA  None
POWER SUPPLY  AC100V 50/60Hz
PERIPHERALS  JR-F01 5''1/4 disk units, JR-F02 additional disk-drive, JR-F03 3''1/2 disk-drives, JR-F04 additional 3''1/2 diks-drive, JR-P01 Graphic printer, RQ-8300 & RQ-8200 tape-recorders
PRICE  159000 yens





Google
 
Web www.old-computersc.com


 

Internet Links
Documentations
Mini-Forum

Click here to go to the top of the page   
Contact us | members | about old-computers.com | donate old-systems | FAQ
OLD-COMPUTERS.COM is hosted by - NYI (New York Internet) -