Difference between revisions of "Amstrad LP-1 light pen"

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[[Image:Amstrad light pen.jpg|right|thumb|250px|The LP-1 Lightpen by Amstrad]]
 
[[Image:Amstrad light pen.jpg|right|thumb|250px|The LP-1 Lightpen by Amstrad]]
  
−
A Lightpen by [[Amstrad]] ....
+
The '''LP-1''' is the official [[Amstrad]] lightpen (with software from [[Amsoft]], and hardware from [[Trojan]]).
 +
 
 +
The '''CAD-MASTER''' seems to be the same hardware (but marketed directly by [[Trojan]], and with different Software included).
  
 
== Technical ==
 
== Technical ==
  
−
Looking at the french manual, it seems to be connected to the Joystick port (not to the Lightpen input on the Expansion Port).
+
Connects to the Joystick port (not to the Lightpen input on the Expansion Port).
 +
  Input:
 +
  Light Sensor --> Keyboard.Row9.Bit1 (aka Joystick Down) (0=Light, 1=No Light)
 +
  Output:
 +
  Keyboard.Row9 is constantly held LOW during lightpen access
 +
  Keyboard.Row6 is constantly held floating during lightpen access (isn't HIGH because it's open collector)
 +
  Keyboard.Colums aka PSG.Ext.PortA are configured as inputs aka HIGH-Z
 +
The above LOW and HIGH-Z levels seem to be misused as power supply GND and 5V. There seems to be no power-supply required for the CPC version (unlike the ZX Spectrum version, which connects to cassette EAR port, and which requires an external 9V battery).
  
−
The pin-outs are unknown?
+
* As seen on the package and advert, both the LP-1 and CAD-MASTER light pens work with '''colour monitor only''', ie. not with green screens.
  
−
There seems to be only the light-sensor (no additional button)?
+
== Pictures ==
  
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== Manual ==
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<gallery caption="Amstrad LP-1 (Amstrad/Trojan)">
 +
File:Amstrad Crayon Optique LP-1 Advert.jpg|Advert
 +
File:Amstrad Crayon Optique LP-1 Package.jpg|Package
 +
File:Amstrad LP-1.jpg|Amstrad Light Pen LP-1 Package - English
 +
File:Amstrad light pen.jpg|Pen
 +
</gallery>
  
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<gallery caption="Manual (in French)">
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<gallery caption="Trojan Cad-Master (Trojan)">
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Image:lp1 1.jpg|Frontpage
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File:Trojan-cad-master-light-pen-front.jpeg|Front
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Image:lp1 2.jpg|Page 1
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File:Trojan-cad-master-light-pen-back.jpeg|Back
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Image:lp1 3.jpg|Page 2
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File:Trojan-cad-master-light-pen-open.jpeg|Open
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Image:lp1 4.jpg|Page 3
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File:Trojan-cad-master-light-pen-pen.jpeg|Pen
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Image:lp1 5.jpg|Page 4
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Image:lp1 6.jpg|Page 5
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Image:lp1 7.jpg|Page 6
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Image:lp1 8.jpg|Page 7
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Image:lp1 9.jpg|Page 8
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Image:lp1 10.jpg|Page 9
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Image:lp1 11.jpg|Page 10
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Image:lp1 12.jpg|Page 11
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Image:lp1 13.jpg|Page 12
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Image:lp1 14.jpg|Page 13
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</gallery>
 
</gallery>
  
−
[[Category:Hardware]] [[Category:Peripherals]]
+
== Software / Downloads ==
 +
 
 +
* [[Media:LIGHTPEN.ZIP|Amstrad LP-1 drivers]] - (English) (bas/bin) - [http://www.cpcwiki.eu/index.php/User:Jonathanen Jonathanen]
 +
* [[Media:LP-1.zip‎|Amstrad LP-1 drivers]] - (English) (DSK for Emulators) - [http://www.cpcwiki.eu/index.php/User:Jonathanen Jonathanen]
 +
* [[Media:Amstrad Crayon Optique Trojan LP-1 Tape.zip|Amstrad LP-1 drivers]] - (French) (cdt)
 +
* [[Trojan CAD-MASTER drivers.zip]] - none such?
 +
 
 +
The LP-1 package consists of MCPEN.BIN (machine code driver), and LIGHTPEN.BAS (instructions, demonstration, and NIM game).
 +
 
 +
== Manual ==
 +
 
 +
* [[Amstrad LP-1 Light Pen Manual]] (jpg's) (French)
 +
* [[Media:Lightpen LP-1.pdf|Amstrad LP-1 Light Pen Manual]] (pdf) (French)
 +
* [[Trojan CAD-MASTER Manual]] - none such?
 +
 
 +
[[Category:Input Device]] [[Category:Peripherals]][[Category:Amstrad Products]]

Latest revision as of 04:04, 13 December 2018

The LP-1 Lightpen by Amstrad

The LP-1 is the official Amstrad lightpen (with software from Amsoft, and hardware from Trojan).

The CAD-MASTER seems to be the same hardware (but marketed directly by Trojan, and with different Software included).

Technical

Connects to the Joystick port (not to the Lightpen input on the Expansion Port). 

 Input:
 Light Sensor --> Keyboard.Row9.Bit1 (aka Joystick Down) (0=Light, 1=No Light)
 Output:
 Keyboard.Row9 is constantly held LOW during lightpen access
 Keyboard.Row6 is constantly held floating during lightpen access (isn't HIGH because it's open collector)
 Keyboard.Colums aka PSG.Ext.PortA are configured as inputs aka HIGH-Z

The above LOW and HIGH-Z levels seem to be misused as power supply GND and 5V. There seems to be no power-supply required for the CPC version (unlike the ZX Spectrum version, which connects to cassette EAR port, and which requires an external 9V battery).

  • As seen on the package and advert, both the LP-1 and CAD-MASTER light pens work with colour monitor only, ie. not with green screens.

Pictures

  • Amstrad LP-1 (Amstrad/Trojan)

  • Advert

  • Package

  • Amstrad Light Pen LP-1 Package - English

  • Pen

  • Trojan Cad-Master (Trojan)

  • Front

  • Back

  • Open

  • Pen

Software / Downloads

The LP-1 package consists of MCPEN.BIN (machine code driver), and LIGHTPEN.BAS (instructions, demonstration, and NIM game).

Manual

Retrieved from "https://gryzor.info/index.php?title=Amstrad_LP-1_light_pen&oldid=102428"