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
173 lines
6.6 KiB
Markdown
173 lines
6.6 KiB
Markdown
---
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title: Signetics Instructor 50
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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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- '1978'
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cpus:
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- Signetics 2650
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params:
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name: Instructor 50
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image: /media/museum/photos/signetics_instr50_system_s1.jpg
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company: /companies/signetics
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company_name: Signetics
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specs:
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- label: NAME
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value: Instructor 50
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- label: MANUFACTURER
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value: Signetics
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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: '1978'
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- label: BUILT IN LANGUAGE
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value: Hexadecimal Monitor
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- label: KEYBOARD
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value: 1 hexadecimal keypad + 1 function keypad
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- label: CPU
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value: Signetics 2650
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- label: SPEED
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value: 895 kHz
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- label: CO-PROCESSOR
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value: Signetics 2656
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- label: RAM
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value: 128 bytes (used by the monitor) + 512 bytes (free for the user)
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- label: ROM
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value: 2 KB (monitor)
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- label: TEXT MODES
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value: LED display - 1 line of 8 characters
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- label: GRAPHIC MODES
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value: None
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- label: COLORS
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value: None
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- label: SOUND
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value: None
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- label: SIZE / WEIGHT
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value: 35 (W) x 25 (D) x 7.5 (H) cm / 1.1 kg
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- label: I/O PORTS
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value: Tape interface, S100 compatible expansion bus
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- label: BUILT IN MEDIA
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value: None
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- label: POWER SUPPLY
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value: External power supply (5V or 8V depending on models)
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- label: PRICE
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value: 350$ (USA, 1978)
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tabs:
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- photos
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- adverts
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- emulators
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- links
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- docs
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forum_thread: 1003
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photos:
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- title: INSTRUCTOR 50
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subtitle: ''
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text: ''
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image: /media/museum/photos/signetics_instr50_system_s2.jpg
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- title: EARLY MODEL
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subtitle: ''
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text: Early models were labeled ''Signetics 2650 Instructor''
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image: /media/museum/photos/signetics_instructor-50_3.jpg
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- title: KEYBOARD
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subtitle: ''
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text: The right keypad allows to enter Hexadecimal data, the left one manages the ROM monitor - program Run/Stop, breakpoints, CPU registers and memory contents.
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image: /media/museum/photos/signetics_instr50_keyboard_s1.jpg
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- title: I/O SWITCHES
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subtitle: ''
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text: Each parallel I/O line has its own switch and LED.
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image: /media/museum/photos/signetics_instr50_keyboard_s2.jpg
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- title: 2650 INSTRUCTIONS
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subtitle: ''
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text: All the 2650 instructions along with their Hex codes are printed onto the user panel.
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image: /media/museum/photos/signetics_instr50_keyboard_s3.jpg
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- title: BACK SIDE
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subtitle: ''
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text: S100 connector and AC adaptor jack.
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image: /media/museum/photos/signetics_instr50_rear_s1.jpg
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- title: UNDERNEATH
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subtitle: ''
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text: Thanks to **Rainer Bauer**
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image: /media/museum/photos/signetics_instr50_underneath_s1.jpg
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- title: SIGNETICS LABEL
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subtitle: ''
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text: Thanks to **Rainer Bauer**
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image: /media/museum/photos/signetics_instr50_label_s1.jpg
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- title: MOTHERBOARD
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subtitle: ''
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text: |-
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**(1)** 512 Bytes RAM chips (4x2112)\
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**(2)** 2656 chip, holds the clock generator, 2 KB ROM (Monitor), 128 bytes RAM and I/O decoding\
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**(3)** Signetics 2650 CPU\
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**(4)** Parallel lines decoder\
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**(5)** Tape recorder jacks
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image: /media/museum/photos/signetics_instr50_mainboard_s1.jpg
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- title: RUNNING
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subtitle: ''
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text: ''
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image: /media/museum/photos/signetics_instr50_mainboard_s2.jpg
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- title: MANUALS
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subtitle: ''
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text: |-
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Complete set of Signetics and Instructor 50 manuals, along with the Instructor demo cassette.
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Thanks to **Rainer Bauer**
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image: /media/museum/photos/signetics_instr50_manuals_s1.jpg
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- title: LOGIC DIAGRAM
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subtitle: ''
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text: ''
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image: /media/museum/photos/signetics_instr50_diagram_s1.jpg
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adverts:
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- title: US ADVERT
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subtitle: ''
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text: |-
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Advert for Instructor 50, Byte March 1979, Page 45.
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Thanks to Adam Trinfo for this advert
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image: /media/museum/pubs/byte%20%28pub%20for%20instructor%2050%29%28march%201979%2C%20page%2045%29.jpg
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emulators:
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- title: WinArcadia
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url: http://amigan.classicgaming.gamespy.com/
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platform: Windows
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text: emulates the Emerson Arcadia 2001 console family, the Interton VC 4000 console family, the Elektor TV Games Computer and the Signetics Instructor 50 computer
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- title: AmiArcadia
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url: http://amigan.classicgaming.gamespy.com/
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platform: Amiga OS
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text: emulates the Emerson Arcadia 2001 console family, the Interton VC 4000 console family, the Elektor TV Games Computer and the Signetics Instructor 50 computer
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links:
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- title: Amigan Software
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url: http://amigan.classicgaming.gamespy.com/
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text: A lot of interesting info and documentation here
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docs:
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- title: SIGNETICS INSTRUCTOR 50 MANUAL
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url: http://bitsavers.trailing-edge.com/components/signetics/2650/Signetics_Instructor_50_Users_Guide_Aug1979.pdf
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cover: /media/museum/docs/couvs/signetics-2650_usermanual_s.jpg
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text: |-
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[**SIGNETICS INSTRUCTOR 50 MANUAL**](http://bitsavers.trailing-edge.com/components/signetics/2650/Signetics_Instructor_50_Users_Guide_Aug1979.pdf)written by Signetics
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type of document : PDF\
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size : 20 MB\
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source : [BitSavers](http://bitsavers.trailing-edge.com/)
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oc_id: 1029
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source:
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url: https://web.archive.org/web/20230606131744/http://www.old-computers.com/museum/computer.asp?c=1029
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date: '2023-06-06'
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---
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The Instructor 50 was a small system designed to teach the use and programmation of the Signetics 2650 CPU. But it was also a real micro-computer with a tape interface to save and load programs, and a S-100 compatible expansion bus.
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It actually belonged to a second generation training computers: unlike its predecessors, it wasn't just a raw electronic board, but offered a real plastic case, S-100 bus, tape-interface, etc....
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The built-in display was only a eight-digit, seven-segment LED display... When turned on it displays "HELLO". The keyboard was made of an hexadecimal keypad (16 keys) and function keypad (12 keys). Interaction is also made through 8 parallel I/O switches and their corresponding LEDs.
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The only software built-in the system was the monitor (called User System Executive or USE), used to program the Instructor 50. Of course, programmation was made in hexadecimal through a simplistic assembler.
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The 2 KB ROM was used to store the monitor. RAM was 640 bytes, but 128 bytes were used by the monitor, leaving 512 bytes for programmation. But having 14 address lines, the 2650 CPU was capable of addressing 32K bytes !
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<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>
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