parInterface

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Internal construction and programming of the parallel interfaces

paralleles Interface : BlockSchaltbild

block diagram

paralleles Interface : Impulsdiagramm

pulse diagram

Interface Signal Printer Signal Pin Number
LOAD OUT Data bit 0 2
LOAD IN Data bit 1 3
DATA OUT Data bit 2 4
CLOCK Data bit 3 5
TRIGGER-X Data bit 4 6
TRIGGER-Y Data bit 5 7
DATA/COUNT IN Busy 11
- - -

Pins

On programming the interface a little protocol is used, which can be derived from the pulse diagram. It is described (for example) in the fischertechnik Computing manual "Interface für Atari ST Computer" (30566). The pages 27 and 28 from that manual (with kindly permission of fischerwerke) are available here. With Win 3.1 and Win 95/98 the parallel port can be addresses directly by its port addresses. With Win NT a special driver is needed for that purpose.

The download package TipsftSP.ZIP contains a Visual Basic source (with english comments) with enables the access to the interface (Win 3.1, Win 95/98). The source is intended to be a documentatation of the access protocol more then an application (therefore use umFish.ZIP - with english manual). The source is constructed very simple. That will enable programmers from other systems ore programming languages to transscribe it for there purposes.