Original idea from Ben Eater https://eater.net/8bit
Förbättringar/enhancements:

  • 256 byte RAM
  • 8 bit address register
  • 8 bit program counter
  • Stack/general purpose register
  • Hardware instruction step counter reset
  • Random number generator (LFSR)
  • Clock halt when in program mode
  • 6 bit instruction register, I’m using A0-A2 for step, A3-A8 for instruction and A9-A10 for flags. I use two different EEPROM images
  • Arduino for programming RAM
  • Replaced LED and resistors with network type
  • Decimal or hexadecimal output 

Bilder/Pictures

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Click on the i at the bottom to read more information about each image

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Video

Datorn räknar Fibonacci-tal
The computer counts Fibonacci numbers

Datorn slumpar tal
Computer shows random numbers

Räkna upp och sedan ner igen
Count up and count down

Addition med 1 sedan 2, 3, 4, o.s.v.
Increased addition, addition of 1 then 2, 3, 4, etc.

Bit stress test

Kopplingsscheman/Schematics

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