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#µC80C535

The µC80C535 is a simple circuit from maybe 1998. It was published by a german electronic magazin, named Elektor and uses the 80C535 from Siemens/Infinion. The EEprom stores a monitor program with some usefull functions. It is also possible to code in the running system by manipulating the RAM. The monitor has also an inbuild debugger. The only disadvantage, there is no flash memory inside. So every program is stored in RAM.

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DCF_Receiver

This is a part of my old school project. It was an digital station clock with LED display. Programming the decode functions for the received DCF77 signal was my part. Sorry for this ugly piece of code, but i learned assembler these days. ;-)

There are two ASM program's in the directory:1

  • The first One emulate a DCF77 transmitter. It was used to test the decode functions without hardware.
  • The second One is the decoder itself.

keyboard_ext

An implement of a simple 4x4 matrix keyboard. Could be attached to the µC80C535 board. More to come...

input_output

Two simple circuits for input and output.

doc

Some documentation for the µC80C535

About

Some assembler code.

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