RE: 6809 assembly knowledge needed

Date: Wed, 3 Feb 2010 10:07:22 +0100
Message-ID: <>
Hallo Rainer,


Very interesting! But you being much more familiar with these kind of
things, could you answer some questions, please?

- I assume that the FPGA is big enough for replacing the 6510, how much
room is left for extra goodies? (that is my purpose, otherwise it makes
no sense to use this device)

- The PDF says: "I/Os are not 5V tolerant". I see a lot of resistors to
handle this. But is it still capable of driving the C64 plus some
extras? If not, what is needed to make it capable? For example, will
74HCT245's and 541's do?

- I'm not a newbee but I'm more famliar with Altera. What is needed,
hard- and software, for programming it?

> Plus, 6502 and 6809 are almost sourcecode-compatible, so ....

Hmmm, nice idea! If I find the time, I'll give it a good thought.

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