[Coco] CC-Five (was Re: Pseudo CoCo4???) (LONG)

[Mark McDougall]

Joel Ewy wrote:

> Have any idea about what percentage of likely FPGA
> candidates would be consumed by something like an off-the-shelf PIC core?

No idea, sorry. But the T80 (Z80) core takes 2302 LEs in a Altera Cyclone II 
EP2C35, which is 6.9%. John's CPU09 (6809) core takes 2599 LEs, about 7.8%.

The EP2C35 is a moderately-sized FPGA. High-end Stratix devices have up to 
132,000 LEs - a 6809 would take about 2% of the device. You may argue that 
no hobbyist could afford such a device - and that's true - today!

I'd still like to have a crack at the TI 4-bit micro... the difficult part 
is verifying the implementation...

Regards,

-- 
|              Mark McDougall                | "Electrical Engineers do it
|  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"