[Coco] CoCo3 accelerator add-on

Luis Antoniosi (CoCoDemus) retrocanada76 at gmail.com
Sat Apr 27 23:25:57 EDT 2013


my cp/m emulator would run faster too :)


On Sat, Apr 27, 2013 at 11:04 PM, Nick Marentes <nickma at optusnet.com.au>wrote:

> Here's an idea I've been tossing around for awhile and wonder if it is
> possible/feasible.
>
> The GIME chip is so tied down to the speed of the 6809 in order to keep
> video syncronised for output to a monitor.
>
> As we've seen in the past, clocking up the 6809 just makes the GIME lose
> video sync.
>
> What if a replacement 6809 could be created using an FPGA with adaption to
> fit the standard 6809 socket?
>
> The FPGA would ensure that the signals to the GIME remain what it expects
> but internally, it can process much faster.
>
> This will be similar to Sock Master 4Mhz mod which made the 6809 slow down
> when being accessed by the GIME (or vice versa) but number crunching can
> run at a higher rate.
>
> A faster CoCo3 opens the doors to more complex programs such as a Wolf3D
> game (graphics still at old speed but number crunching for the math much
> faster).
>
> Possible? Another pipe dream?
>
> Nick
>
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