【Mitsubishi Electric】Apricot Qi Workstations and LAN Terminals

As more offices adopted LANs, a new trend toward distributed processing in client-server configurations picked up momentum. Mitsubishi Electric announced its Apricot client-server computer series in April 1991 to implement these client-server configurations. The series consisted of servers — FT servers, and client machines — Qi workstations and LAN terminals. This article describes the Qi workstations and LAN terminals.

Qi workstations were client computers with a high-performance CPU and a high-performance bus architecture. Qi workstations had the following features.

  • The high-end model was standard equipped with a high-performance Intel 32-bit i486 (25 MHz) CPU and 128 KB of external cache memory, and the entry-level model used an inexpensive 32-bit 386SX (16 MHz) CPU.
  • The workstations had a high-performance 32-bit MCA (micro channel architecture) bus and four expansion slots (two 32-bit slots and two 16-bit slots).
  • The computers’ open architecture included a VGA (video graphics array) display control module and the DOS J 4.0/V operating system
  • The workstations came with NetWare and LAN Manager, highly rated standard networking OSs,.
  • The included security system had such features as infrared security card-protected logins and screen-blanking.

The LAN terminals were designed specifically as client computers. They had the following features.

  • Slim, compact form factor (323 x 350 x 57 mm (w x d x h)).
  • An Ethernet controller was mounted on the motherboard as standard equipment.
  • Packaged with DOS J4.0/V, NetWare, and LAN Manager.
  • Used an Intel 32-bit 386SX (16 MHz) CPU.
Specifications of the 25 MHz Qi workstation
CPU Processor 32-bit i486 microprocessor (25 MHz)
High-speed math coprocessor Built in the CPU
Memory Cache memory External cache: 128 KB Internal CPU cache: 8 KB
ROM 128KB
RAM 4 MB (expandable up to 16 MB in increments of 4 or 8 MB)
Video RAM 512KB
Storage memory devices Flexible disk drive One 3.5-inch drive (1.44 MB)
Hard disk drive Capacity 100MB200MB305MB
Access time 17ms15ms12.5ms
Display device 64KB32KB64KB
Internal streaming tape unit 120MB (optional)
Display device Display method 14-inch color monitor (optional), analog RGB
Display colors VGA specification, 16 colors from a 262,144-color palette
Japanese mode Resolution: 640 x 480 pixels Japanese: 40 characters x 25 lines, 16 x 19 pixels Alphanumeric: 80 characters x 25 lines, 8 x 19 pixels
English mode Resolution: 640 x 480 pixels Alphanumeric: 80 characters x 30 lines, 8 x 16 pixels
Kanji font file ~7,300 characters including standard JIS Level 1 and Level 2 characters
Keyboard 106 keys, JIS layout
Mouse (optional) Two-button PS/2 mouse
Interfaces RS-232C D-sub 25 pin, asynchronous
Printer Centronics interface
LAN (optional) Ethernet or token ring
Expansion slots Four slots (two 32-bit slots, one 16-bit slot, one 16-bit video slot) MCA bus
Power supply AC 100V±10%,50Hz/60Hz
Power consumption 320VA
External dimensions [mm] 396×430×130 (w x d x h)
Weight 7.5kg
Specifications of the LAN terminal
CPU Processor 32-bit 386SX microprocessor (16 MHz)
High-speed math coprocessor 387SX(16MHz)Processor (optional)
Memory ROM 64KB
RAM 1 MB (expandable up to 8 MB in increments of 1, 2, 4, or 7 MB)
Video RAM 256KB
Storage memory devices Flexible disk drive One 3.5-inch drive (1.44 MB)
Hard disk drive Capacity 50MB
Access time 17ms
Display device 64KB
Display device Display method 14-inch color monitor (optional), analog RGB
Display colors VGA specification, 16 colors from a 262,144-color palette
Japanese mode Resolution: 640 x 480 pixels Japanese: 40 characters x 25 lines, 16 x 19 pixels Alphanumeric: 80 characters x 25 lines, 8 x 19 pixels
English mode Resolution: 640 x 480 pixels Alphanumeric: 80 characters x 30 lines, 8 x 16 pixels
Kanji font file ~7,300 characters including standard JIS Level 1 and Level 2 characters
Keyboard 106 keys, JIS layout
Mouse (optional) Two-button serial mouse
Interfaces RS-232C D-sub 25 pin, asynchronous
Printer Optional
LAN Ethernet, standard
Power supply AC 100V±10%,50Hz/60Hz
Power consumption 80VA
External dimensions [mm] 323 x 350 x 57 (w x d x h)
Weight 5.2kg

 
Apricot Qi workstationApricot LAN terminal