Motorola 6800

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(link to SVG images and JSSim)
(short list of features to be expanded)
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We have a JavaScript simulator available here [http://visual6502.org/JSSim/expert-6800.html?nosim=t (graphical mode)] [http://visual6502.org/JSSim/expert-6800.html?graphics=f&loglevel=4&steps=20 (non-graphical mode)]
We have a JavaScript simulator available here [http://visual6502.org/JSSim/expert-6800.html?nosim=t (graphical mode)] [http://visual6502.org/JSSim/expert-6800.html?graphics=f&loglevel=4&steps=20 (non-graphical mode)]
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Interesting features (more detail to be added)
 +
* register circuit
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* data latch circuit
 +
* clock pulse shaping
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* bus pullup
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* carry chain
Here's the block diagram from the [http://www.google.com/patents?id=6OkAAAAAEBAJ&zoom=4&pg=PA3#v=onepage&q&f=false 1976 topology patent] (See also [http://www.freepatentsonline.com/4090236.pdf this later patent.]):
Here's the block diagram from the [http://www.google.com/patents?id=6OkAAAAAEBAJ&zoom=4&pg=PA3#v=onepage&q&f=false 1976 topology patent] (See also [http://www.freepatentsonline.com/4090236.pdf this later patent.]):
[[File:M6800-arch.png]]
[[File:M6800-arch.png]]

Revision as of 17:59, 5 April 2011

See here for an overview of the chip and the photographs we have of the die. As of late March 2011 we have vectorised polygons and a transistor level netlist, which we hope to publish soon.

Here are JPEG images of the recaptured polygons - these may be easier to explore than the svg format:

Medium size Full size (14Mbyte)

We have a JavaScript simulator available here (graphical mode) (non-graphical mode)

Interesting features (more detail to be added)

  • register circuit
  • data latch circuit
  • clock pulse shaping
  • bus pullup
  • carry chain

Here's the block diagram from the 1976 topology patent (See also this later patent.): M6800-arch.png

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