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/hitachi-mb-6890-basic-master-level-3.md

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+---
+title: Hitachi MB-6890 / Basic Master Level 3
+categories:
+- Computers
+types:
+- Home Computer
+origins:
+- Japan
+years:
+- '1980'
+cpus:
+- Motorola 6809
+params:
+  name: MB-6890 / Basic Master Level 3
+  company: /companies/hitachi
+  company_name: Hitachi
+  specs:
+  - label: NAME
+    value: MB-6890 / Basic Master Level 3
+  - label: MANUFACTURER
+    value: Hitachi
+  - label: TYPE
+    value: Home Computer
+  - label: ORIGIN
+    value: Japan
+  - label: YEAR
+    value: '1980'
+  - label: BUILT IN LANGUAGE
+    value: Hitachi Level-3 Basic Version 1.0 (Copyright Microsoft)
+  - label: KEYBOARD
+    value: QWERTY full-stroke keyboard, separated numeric keypad, 5 function keys
+  - label: CPU
+    value: Motorola 6809
+  - label: SPEED
+    value: 1 Mhz
+  - label: RAM
+    value: 48k ?
+  - label: VRAM
+    value: 16k
+  - label: ROM
+    value: 24k (Basic Interpreter)
+  - label: TEXT MODES
+    value: 80 x 28 / 40 x 25
+  - label: GRAPHIC MODES
+    value: 80 x 100 / 160 x 100 / 160 x 200 / 320 x 200 / 640 x 200
+  - label: COLORS
+    value: '8'
+  - label: SOUND
+    value: Unknown
+  - label: I/O PORTS
+    value: 6 expansion slots, RS232c, Tape-recorder
+  - label: POWER SUPPLY
+    value: Built-in PSU
+  - label: PERIPHERALS
+    value: Tape-recorder, printer interface board, light-pen, Chinese character ROM board, 8088 CPU board, Disk Interface board, Z80 CPU board, RAM expansion boards
+  tabs:
+  - photos
+  - links
+  photos:
+  - title: MB 6890
+    subtitle: ''
+    text: ''
+    image: null
+  - title: THE KEYBOARD
+    subtitle: ''
+    text: Thanks to [Ueda's Page](http://www.japan-net.ne.jp/~a-ueda/oldcom/) for this picture
+    image: null
+  links:
+  - title: Ueda's Page
+    url: http://www.japan-net.ne.jp/~a-ueda/oldcom/
+    text: Lot of infos and pictures here ! (japanese)
+  comments:
+  - author: Michael Schipp (Australia)
+    date: Sunday 6th June 2021
+    text: Memory came in two sizes, 16k and 64k. Our School computer lab was full of these but only 2 had 64k in 1985/86 then replaced with IBM xt clones
+  - author: Carlos Camacho (United States)
+    date: Thursday 1st April 2021
+    text: '@Rusty, I would be interested in those cards. Do you still have the schematics?'
+  - author: Rusty (Australia)
+    date: Thursday 26th May 2016
+    text: I designed a number of add-on cards for this computer in my teenage years - two floppy disk controllers, hard disk interface with networking, multifunction card with rtc, two ay-3-8910 psg chips and a spo256 speech chip along with two atari joystick ports and a z80 card to run cp/m. I still have those boards but not the computer. It was a very well made piece of hardware and very reliable - too expensive for me to buy at the time.
+  oc_id: 2
+  source:
+    url: https://web.archive.org/web/20230413210407/http://www.old-computers.com/museum/computer.asp?c=2
+    date: '2023-04-13'
+---
+
+This japanese computer seems quite powerful. The main board is located into the main case, under the monitor.
+
+Inside this main case there are 6 expansion slots which is quite enough ! Thus a lot of expansion boards were available (disk, printers, 8088, Z80 boards, etc).
+
+An interesting feature is that there's a little trap-door on the keyboard which reveals some cool control switches : a power switch, a text mode switch (80 / 40 columns), a reset button and volume control knob. Quite useful !