yann64andClaude Opus 5.5
c913d792c4
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
86 lines
2.7 KiB
Markdown
86 lines
2.7 KiB
Markdown
---
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title: MATSUSHITA National JR 300
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categories:
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- Computers
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types:
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- Home Computer
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origins:
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- Japan
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years:
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- '1984'
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cpus:
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- Zilog Z80A
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params:
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name: National JR 300
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image: /media/museum/photos/jr300.jpg
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company: /companies/matsushita
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company_name: MATSUSHITA
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specs:
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- label: NAME
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value: National JR 300
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- label: MANUFACTURER
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value: Matsushita
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- label: TYPE
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value: Home Computer
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- label: ORIGIN
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value: Japan
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- label: YEAR
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value: '1984'
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- label: BUILT IN LANGUAGE
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value: JR Basic 5.0 and Extended Basic
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- label: KEYBOARD
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value: Full stroke keyboard, 98 keys, 6 function keys, separated numeric keypad
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- label: CPU
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value: Zilog Z80A + MN1800A (6802 compatible)
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- label: SPEED
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value: 4 Mhz (Z80A)
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- label: CO-PROCESSOR
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value: MN1544 and MN1542
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- label: RAM
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value: 82 kb
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- label: VRAM
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value: 52 kb
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- label: ROM
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value: '40 kb (Basic : 16k)'
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- label: TEXT MODES
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value: 80 x 25 / 40 x 25 / 32 x 24
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- label: GRAPHIC MODES
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value: 640 x 200 / 320 x 200 / 640 x 400
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- label: COLORS
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value: '8'
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- label: SOUND
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value: 3 channels, 8 octaves (Yamaha 8910)
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- label: SIZE / WEIGHT
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value: |-
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Keyboard : 390 × 198 × 38 mm / 1.6kg\
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Main unit : 390 × 350 × 80 mm / 4.8 Kg
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- label: I/O PORTS
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value: RGB video output, Monitor, Audio out, Expansion, Tape (600/2400 bauds), Centronics, Joysticks,
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- label: BUILT IN MEDIA
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value: None
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- label: POWER SUPPLY
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value: AC100V 50/60Hz
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- label: PERIPHERALS
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value: 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
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- label: PRICE
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value: 159000 yens
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tabs:
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- links
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links:
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- title: JR Japanese Museum
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url: http://dec.sakura.ne.jp/~hayashi/jr/index.html
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text: A lot of infos about the JR serie !
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oc_id: 321
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source:
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url: https://web.archive.org/web/20230605131228/http://www.old-computers.com/museum/computer.asp?c=321
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date: '2023-06-05'
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---
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The successor of the [JR 200](/museum/matsushita-national-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.
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In fact it seems to be a mix between a JR-200 and a [Sharp X1](/museum/sharp-x1-cz-800c/) system... quite strange ! But apparently this model was never really marketed.
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A handheld model called JR 800 was launched few time later, but it was not compatible with the previous JR computers.
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<table> <tr> <td></td> <td>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.</td> <td></td> </tr> </table>
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