Difference between revisions of "Maplins 8bit Input Port"

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== Schematic ==
 
== Schematic ==
  
[[Image:Maplin 8bit Input Port.png]]
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<gallery>
 +
Image:Maplin 8bit Input Port.png|Schematic
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</gallery>
  
 
== Scanned Article ==
 
== Scanned Article ==
  
 
* [[Media:Maplins Amstrad 8bit Input Port (Project Book 20).pdf|Amstrad 8bit Input Port (for use, among others, with the Satellite Receiver) - project 20.b]] (pdf)
 
* [[Media:Maplins Amstrad 8bit Input Port (Project Book 20).pdf|Amstrad 8bit Input Port (for use, among others, with the Satellite Receiver) - project 20.b]] (pdf)

Revision as of 11:15, 23 August 2010

A simple 8bit Input port from Maplin. Intended (among others) for use with the Maplins Weather Satellite Receiver.

Technical

Can be mapped to Port F8F0h..F8FFh (jumper select-able). F8F0h (with a mirror at F8F1h) can be considered as default (this address is also recommended as 8bit-input address in the Weather Satellite source code).

Note that the original article specifes addresses F8E0h..F8EFh instead of F8F0h..F8FFh - that is wrong, the schematic connects A4 to EN1, so ports are accessed when Address Bit4=1.

Schematic

Scanned Article