yann64andClaude Opus 5.5
b274874139
1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
129 lines
4.3 KiB
Markdown
129 lines
4.3 KiB
Markdown
---
|
||
title: IBM PC JX
|
||
categories:
|
||
- Computers
|
||
types:
|
||
- Home Computer
|
||
origins:
|
||
- U.S.A.
|
||
years:
|
||
- '1984'
|
||
cpus:
|
||
- Intel 8088
|
||
params:
|
||
name: PC JX
|
||
image: /media/museum/photos/ibm_pc-jx_1.jpg
|
||
company: /companies/ibm
|
||
company_name: IBM
|
||
specs:
|
||
- label: NAME
|
||
value: PC JX
|
||
- label: MANUFACTURER
|
||
value: IBM
|
||
- label: TYPE
|
||
value: Home Computer
|
||
- label: ORIGIN
|
||
value: U.S.A.
|
||
- label: YEAR
|
||
value: October 1984
|
||
- label: BUILT IN LANGUAGE
|
||
value: Advanced BASIC (Same as PCjr)
|
||
- label: KEYBOARD
|
||
value: Full stroke 79-key with 10 function-key and arrow keys
|
||
- label: CPU
|
||
value: Intel 8088
|
||
- label: SPEED
|
||
value: 4.77 MHz
|
||
- label: CO-PROCESSOR
|
||
value: No 8087 socket
|
||
- label: RAM
|
||
value: |-
|
||
JX :64k (up to 512k)\
|
||
JX2 : 128k
|
||
- label: VRAM
|
||
value: |-
|
||
JX : 16k\
|
||
JX2 : 32k
|
||
- label: ROM
|
||
value: 128k
|
||
- label: TEXT MODES
|
||
value: 40 or 80 chars. x 25 lines in 8 colors
|
||
- label: GRAPHIC MODES
|
||
value: 320 x 200 / 640 x 200 (16 colors) / 720 x 512 (2 colors)
|
||
- label: COLORS
|
||
value: '16'
|
||
- label: SOUND
|
||
value: 3 channels, 8 octaves
|
||
- label: I/O PORTS
|
||
value: 2 cartridge ports (64 KB each), Centronics (optional), RS232, Joystick, Light Pen
|
||
- label: BUILT IN MEDIA
|
||
value: 2 x 3.5'' disk-drives
|
||
- label: OS
|
||
value: MS DOS 2.1
|
||
- label: POWER SUPPLY
|
||
value: Built-in power supply unit
|
||
- label: PERIPHERALS
|
||
value: Expansion unit - Houses a 5.25'' FDD and 5 expansion slots
|
||
- label: PRICE
|
||
value: |-
|
||
JX2 : 270000 yens (Japan 84)\
|
||
From A$2115 to A$3365 (Australia 1985)
|
||
tabs:
|
||
- photos
|
||
- adverts
|
||
forum_thread: 197
|
||
photos:
|
||
- title: IBM JX-5
|
||
subtitle: ''
|
||
text: |-
|
||
Differences between the different JX models are obscure yet...
|
||
|
||
Thanks to [FPCU Japan](http://www.nifty.ne.jp/forum/fpcu/pchist/) for this picture
|
||
image: /media/museum/photos/ibm_pc-jx_2.jpg
|
||
- title: AUSTRALIAN VERSION
|
||
subtitle: ''
|
||
text: ''
|
||
image: /media/museum/photos/ibm_jx_englishversion_1.jpg
|
||
- title: REAR CONNECTORS
|
||
subtitle: ''
|
||
text: |-
|
||
**(1)** Light-pen DIN plug\
|
||
**(2)** Cassette recorder DIN plug\
|
||
**(3)** Audio out jack\
|
||
**(4)** Parallel printer DB25 connector\
|
||
**(5)** Joystick 1\
|
||
**(6)** Koystick 2\
|
||
**(7)** Memory expansion housing\
|
||
**(8)** Serial card housing\
|
||
**(9)** Display connector\
|
||
**(10)** Keyboard RJ45 jack
|
||
image: /media/museum/photos/ibm_jx_back_1.jpg
|
||
- title: AUSTRALIAN KEYBOARD
|
||
subtitle: ''
|
||
text: |-
|
||
JX compact and extended keyboards provided both infra-red or cabled operation.\
|
||
The infra-red worked well with a distance from the main unit of about 2.5 meters.
|
||
image: /media/museum/photos/ibm_jx_englishkeyboard_1.jpg
|
||
adverts:
|
||
- title: JAPANESE AD
|
||
subtitle: ''
|
||
text: Thanks to [P.KATSU](http://club.pep.ne.jp/~p.katsu/pasocata/index.html) for this picture
|
||
image: /media/museum/pubs/ibm_pc-jx_pub-jp_1.jpg
|
||
oc_id: 187
|
||
source:
|
||
url: https://web.archive.org/web/20221203214528/http://www.old-computers.com/museum/computer.asp?c=187
|
||
date: '2022-12-03'
|
||
---
|
||
|
||
IBM JX was what the PCjr should have been. It was first released in Japan with dual English/Kanji features, but has not been a big succes in that market dominated by Japanese companies.
|
||
|
||
The Kanji features were then removed and the system was introduced in Australia. It was first submitted to the Victorian Education Department then released for general dealer sales in September 1985.
|
||
|
||
The JX was thus an enhanced version of the [IBM PC Junior](/museum/ibm-pc-junior/) (which had no great success) with which it was compatible. Its enhanced features were :\
|
||
\- the RAM could be extended up to 512 KB instead of 128 KB,\
|
||
\- it had two 3.5" floppy drives instead of only one 360 KB 5.25" one\
|
||
\- it had a high graphic resolution (750 x 512 instead of 640 x 200)\
|
||
\- and the keyboard was a true one (contrary to the early PC Jr which has a poor one).
|
||
|
||
It used version 2.1 of MS-DOS and functioned exactly the same as an original PC model. However the inside of the computer was vastly different from an IBM PC. The expansion slots were limited and not compatible with IBM-PC slots. Several options were available: Extended 98-key keyboard, joysticks, cassette recorder, light pen, asynchronous communications and additional expansion slots.
|