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
184 lines
7.2 KiB
Markdown
184 lines
7.2 KiB
Markdown
---
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title: SEMI-TECH (STM) Pied Piper
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categories:
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- Computers
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types:
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- Professional Computer
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origins:
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- U.S.A.
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years:
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- '1983'
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cpus:
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- Zilog Z80A
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params:
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name: Pied Piper
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image: /media/museum/photos/semitech_piedpiper_system_s2.jpg
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company: /companies/semi-tech-stm
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company_name: SEMI-TECH (STM)
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specs:
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- label: NAME
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value: Pied Piper
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- label: MANUFACTURER
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value: Semi-Tech (STM)
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- label: TYPE
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value: Professional Computer
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- label: ORIGIN
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value: U.S.A.
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- label: YEAR
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value: May 1983
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- label: BUILT IN LANGUAGE
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value: None
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- label: KEYBOARD
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value: Typewriter keyboard, QWERTY, 62 keys
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- label: CPU
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value: Zilog Z80A
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- label: SPEED
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value: 4 MHZ
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- label: RAM
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value: 64 kb
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- label: VRAM
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value: 2 KB
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- label: ROM
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value: 8 KB
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- label: TEXT MODES
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value: 40 or 80 columns x 24 lines
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- label: GRAPHIC MODES
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value: None
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- label: COLORS
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value: '16'
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- label: SOUND
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value: None
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- label: SIZE / WEIGHT
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value: 51 (W) x 27 (D) x 10 (H) cm / 6.25 Kg.
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- label: I/O PORTS
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value: serial / parallel port , RF Modulator
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- label: BUILT IN MEDIA
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value: 5.25'' disk-drive (720kb)
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- label: OS
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value: CP/M 2.2
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- label: POWER SUPPLY
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value: Built in power supply unit
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- label: PERIPHERALS
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value: External 5.25 floppy drive, internal RAM card and modem card, Hard disk interface
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- label: PRICE
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value: $1299 (1983)
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tabs:
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- photos
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- adverts
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forum_thread: 203
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photos:
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- title: LARGE VIEW
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subtitle: ''
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text: ''
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image: /media/museum/photos/semitech_piedpiper_system_s1.jpg
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- title: LEFT SIDE
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subtitle: ''
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text: ''
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image: /media/museum/photos/semitech_piedpiper_leftside_s1.jpg
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- title: RIGHT SIDE
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subtitle: ''
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text: ''
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image: /media/museum/photos/semitech_piedpiper_rightside_s1.jpg
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- title: SECOND FDD
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subtitle: ''
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text: With external 5.25" FDD unit
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image: /media/museum/photos/semitech_piedpiper_dualdrive_s1.jpg
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- title: BACK SIDE
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subtitle: ''
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text: |-
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**(1)** External fllopy drive unit connector\
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**(2)** Z80 bus connector\
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**(3)** Reset switch\
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**(4)** Serial port DIN socket\
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**(5)** Parallel printer connector\
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**(6)** Optional Modem card location\
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**(7)** Power switch and socket
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image: /media/museum/photos/semitech_piedpiper_backside_s1.jpg
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- title: 'INSIDE #1'
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subtitle: ''
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text: |-
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**(1)** Switching power supply unit\
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**(2)** Video chip (unknown reference)\
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**(3)** Nec 8279 Keyboard/Display interface chip\
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**(4)** Keyboard connector\
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**(5)** Z80 processor, here a SGS version\
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**(6)** 2 KB Video RAM - 4 x 2114 chips\
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**(7)** Internal expansion connectors for modem and RAM cards\
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**(8)** 64 KB main RAM - 8 x 4164 chips\
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**(9)** FDD controller chip and connector
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image: /media/museum/photos/semitech_piedpiper_inside_s1.jpg
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- title: 'INSIDE #2'
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subtitle: ''
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text: RAM, ROM and FD controller chips.
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image: /media/museum/photos/semitech_piedpiper_inside_s2.jpg
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- title: 'INSIDE #3'
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subtitle: ''
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text: Complete system with Mitsubishi 5.25" floppy disk drive installed.
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image: /media/museum/photos/semitech_piedpiper_inside_s3.jpg
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- title: MANUALS
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subtitle: ''
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text: User and 'Perfect' suite manuals
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image: /media/museum/photos/semitech_piedpiper_manuals_s1.jpg
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- title: ORIGINAL MODEL
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subtitle: ''
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text: To be franck, the Pied Piper model we own isn't as clean as the above pictures. We had to 'slightly' retouch them...
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image: /media/museum/photos/semitech_piedpiper_realsystem_s1.jpg
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- title: CLONE
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subtitle: ''
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text: In 1985, a company called STM took up the design of the Pied Piper to make a PC compatible system. The detachable keyboard covered a LCD display. The system also featured a built-in printer. It had a very short life.
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image: /media/museum/photos/semitech_piedpiper_clone_s1.jpg
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- title: SEMI-TECH BUILDING
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subtitle: ''
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text: |-
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Semi-Tech building (Markham Ontario Canada).\
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The whole 3 story building and land were belonged to Semi Tech until the company went bankrupt.
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**Steve Otsuka** who worked for Semi Tech during 1982-1987 says:\
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We were cash rich (over $100M), and bought a mainframe computer from Control Data which occupied one floor, mini-computer from DEC VAX series, expensive paintings, old China collectibles. Inside Semi Tech there were people with creative brains including myself (sorry to say this but I was a key engineer) and some of the most advanced projects in North America that time which you would be surprised.
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Thanks to **Steve Otsuka** for information and picture.
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image: /media/museum/photos/semitech_building_s1.jpg
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adverts:
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- title: 'SEMI-TECH BROCHURE #1'
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subtitle: ''
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text: ''
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image: /media/museum/pubs/semitech_piedpiper_brochure_s1.jpg
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- title: 'SEMI-TECH BROCHURE #2'
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subtitle: ''
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text: ''
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image: /media/museum/pubs/semitech_piedpiper_brochure_s2.jpg
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- title: US ADVERT (MAY 1983)
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subtitle: ''
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text: No info in this advert about the display that could be used (TV, composite, colour, B/W?)
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image: /media/museum/pubs/smt_piedpiper_pub_1982%5B2%5D.jpg
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- title: NEW ZEALAND REVIEW
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subtitle: ''
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text: |-
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Review from a New Zealand magazine. Notice the prices in Australian$ at the bottom right of the page.
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Thanks to **Murray Moffatt** from New Zealand
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image: /media/museum/pubs/semitech_piedpiper_pub_s2.jpg
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- title: UK ADVERT, OCT. 1983
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subtitle: ''
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text: ''
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image: /media/museum/pubs/semitech_piedpiper_pub_s1.jpg
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oc_id: 193
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source:
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url: https://web.archive.org/web/20230608213119/http://www.old-computers.com/museum/computer.asp?c=193
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date: '2023-06-08'
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---
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Not much is known about this small computer, designed in Canada and presented at the 1983 NCC show (Anaheim, California), in May. It was marketed then as a portable computer! Quite strange as when you have look at the picture, it looks more like a desktop computer, no built-in screen... In fact it had a handle on the back and a plastic cover for the keyboard. One could carry it like a briefcase. You still needed a monitor (TV) at the other location, however...
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Anyway, the Pied Piper apparently didn't last long. All we know is that it was intended to be marketed in the US, at $1300. It was based upon a Z80 CPU, had a 5''1/4 disk-drive built-in (720 KB) and used CP/M. It was sold with a complete "Perfect Software" package.\
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The modem card was optional, manufacturered in Hong Kong at Semi Tech Hong Kong Ltd.
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According to **Terry Danyleyko** who worked for Semi Tech, 1000 pieces were sold to China. A Chinese CP/M was even written specially for the Pied Piper.
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---
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**Tim Gieseler** reports :\
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I sold ONE pied-piper at my short-lived computer store around 1983-4. There was nothing portable about it, but it was a smallish CP/M machine distinguished by it's use of a standard video monitor (none was supplied) and an unusually large single floppy drive compared to the Eagle/Kaypro/TRS-80s of the day. It was able to read/write many of the numerous floppy formats, as well.
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The "Perfect" software, same as supplied by Kaypro, was universally horrible, buggy, barely functional - but heavily promoted by the manufacture and bundled by many computer makers.
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