Full content from the completed page crawl (media download still running)

6,654 pages: 1,289 machines, 702 software, 460 companies, 64 history, 17 articles, 59 fun.
4,336 media files so far; references to files not downloaded yet are left out.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ

content/museum/matsushita-national-jr-300.md

@@ -0,0 +1,84 @@
+---
+title: MATSUSHITA National JR 300
+categories:
+- Computers
+types:
+- Home Computer
+origins:
+- Japan
+years:
+- '1984'
+cpus:
+- Zilog Z80A
+params:
+  name: National JR 300
+  company: /companies/matsushita
+  company_name: MATSUSHITA
+  specs:
+  - label: NAME
+    value: National JR 300
+  - label: MANUFACTURER
+    value: Matsushita
+  - label: TYPE
+    value: Home Computer
+  - label: ORIGIN
+    value: Japan
+  - label: YEAR
+    value: '1984'
+  - label: BUILT IN LANGUAGE
+    value: JR Basic 5.0 and Extended Basic
+  - label: KEYBOARD
+    value: Full stroke keyboard, 98 keys, 6 function keys, separated numeric keypad
+  - label: CPU
+    value: Zilog Z80A + MN1800A (6802 compatible)
+  - label: SPEED
+    value: 4 Mhz (Z80A)
+  - label: CO-PROCESSOR
+    value: MN1544 and MN1542
+  - label: RAM
+    value: 82 kb
+  - label: VRAM
+    value: 52 kb
+  - label: ROM
+    value: '40 kb (Basic : 16k)'
+  - label: TEXT MODES
+    value: 80 x 25 / 40 x 25 / 32 x 24
+  - label: GRAPHIC MODES
+    value: 640 x 200 / 320 x 200 / 640 x 400
+  - label: COLORS
+    value: '8'
+  - label: SOUND
+    value: 3 channels, 8 octaves (Yamaha 8910)
+  - label: SIZE / WEIGHT
+    value: |-
+      Keyboard : 390 × 198 × 38 mm / 1.6kg\
+      Main unit : 390 × 350 × 80 mm / 4.8 Kg
+  - label: I/O PORTS
+    value: RGB video output, Monitor, Audio out, Expansion, Tape (600/2400 bauds), Centronics, Joysticks,
+  - label: BUILT IN MEDIA
+    value: None
+  - label: POWER SUPPLY
+    value: AC100V 50/60Hz
+  - label: PERIPHERALS
+    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
+  - label: PRICE
+    value: 159000 yens
+  tabs:
+  - links
+  links:
+  - title: JR Japanese Museum
+    url: http://dec.sakura.ne.jp/~hayashi/jr/index.html
+    text: A lot of infos about the JR serie !
+  oc_id: 321
+  source:
+    url: https://web.archive.org/web/20230605131228/http://www.old-computers.com/museum/computer.asp?c=321
+    date: '2023-06-05'
+---
+
+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.
+
+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.
+
+A handheld model called JR 800 was launched few time later, but it was not compatible with the previous JR computers.
+
+<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>