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Nibbler 4 Bit CPU

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1Nibbler 4 Bit CPU Empty Nibbler 4 Bit CPU Wed Feb 24, 2021 6:03 pm

Fizik_S

Fizik_S

I offer a working scheme of a 4-bit Nibbler CPU. The website of the author: https://www.bigmessowires.com/nibbler/ . The diagram for the repetition was taken here: http://www.nedopc.org/forum/viewtopic.php?p=140960 . The game "mastermind"is loaded in the ROM. The clock frequency selected is approximately 16 kilohertz. In the original device-2.46 MHz. Therefore, in the simulator, the speed of work is greatly underestimated. You may get the impression that the simulation is frozen, but it is not. Instead of the clock buttons, switches are used. The reaction to pressing can be up to several minutes - this is normal. On the author's website or on the website nedopc.org there is an assembler, so you can recompile games from the source code to increase the speed of work. On the official website there is a description of the processor and assembler. The simulation runs on SimulIDE software versions 0.4.14 and higher.

Nibbler 4 Bit CPU Nibble11
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arcachofo likes this post

2Nibbler 4 Bit CPU Empty Re: Nibbler 4 Bit CPU Wed Mar 24, 2021 5:47 am

Mistral



@Fizik_S, thanks for letting the visitors of this forum know about this really nice 4-bit Cpu and for showing us that it can be simulated in your very well done project.

My version of it can be found in this topic.
https://simulide.forumotion.com/t143-74hc181-alu-8-bit#673

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