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Now this is just damn cool!


potatohead

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Got a test, partial 6502 emulated, with a quick test code bed. This weekend, it's some assembler work to do a speed check, and figure out the details. Just by way of a comment, I don't think you really understand a CPU, until you work on stuff like this. I'm enjoying the experience. Pretty sure the Prop can get to VCS 6502 speed. Gonna find out real quick.

 

Now, the coolness is this little project!

 

http://www.parallax.com/tabid/708/Default.aspx

 

The Propeller sits between the 6502 and 64K of static RAM. It also contains 32K of it's own internal memory as well, some of which is used to run the 6502, obviously. The Prop feeds the 6502, meaning it controls what happens on a read or write to the RAM, can do address translation and all sorts of other tricks!

 

Several of the Propeller COG's remain, unused, meaning video chip emulation and other things can be done that would essentially make this a software configurable computer! Apple ][ emulation would be a no brainer. Just load the ROM's and setup bitmaps for the graphics pages. Probably could get this thing to run lots of other 6502 computer code, with only software to provide the I/O and chipset emulation on the Prop.

 

I'm gonna build one of these, or buy a board, if he sells them!

 

Could do cool tricks too. Ever wonder what a given computer would be like, if it had this feature or that, or perhaps a different CPU? You can find out on this bugger!

 

...thinking about the potential for this, if put in a cart. Lots of good stuff might be possible. Anyway, just fun stuff. Had to share!

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