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1408A, a 8Bit RISC CPU made in Logisim

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Uploaded by on Apr 9, 2010

1) Deutsch
2) English (scroll down ;) )

1)
Die letzten 3 Tage waren bewegliche Ferientage, also hab ich die Zeit genutzt und was sinnvolles (^^) gemacht und hab ne kleine 8 Bit CPU in Logisim gebaut.
Sie hat:
8 Bit Adressbus (also kann 256 Byte Daten im RAM ansprechen)
8 Bit Datenbus (kann also mit Zahlen von 0 bis 256
arbeiten)
8 IN/OUT Kanäle
und ein wirklich simples Instruction Set.

Das Programm, das gerade abgearbeitet wird, nimmt eine Zahl vom IN Kanal (Zahl von 0 bis 9), zieht 1 davon ab, da jede Zahl mit 1 addiert wurde um eine "0" von keinem input zu unterscheiden, und gibt diese auf dem OUT-Kanal aus. Wenn die Zahl eine "0" ist, beendet sich das Programm mit einem HLT Befehl (die rote Lampe leuchtet).

2)
I had the last tree days off, so I decided to do something useful (^^) and so I've build a little CPU in Logisim.
She's got:
an 8 bit addressbus (so she's able to adress 256 byte of data)
an 8 bit Databus (so she can handle numbers from 0 up to 256)
8 IN/OUT channels
and a very simple instruction set.

The programm she's executing, takes a number from the IN channel (a number from 0 to 9), subtracts one of it, becaus every number is added with one to discern the input "0" from no input. After that the calculated number is outputted on the OUT channel. If you input a "0", the program outputs it and halt itselfs (the red led is glowing).

I hope my English is readable and I hope you've a nice day.

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  • kann ich die haben ^^ ich mache auch so was und ich will mal versuchen die zu verbessern ;)

  • Ulrich kaka!

  • Wirklich geil.

  • Hey, I decided to check out your channel. Very cool work you've done. It's always awesome to see someone else sharing such an interest.

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