[Coco] new high density controller

[jdaggett at gate.net]

Before anyone goes hog wild and tries to reinvent the wheel, Michael Holly of the FLex User 
Group has a design using the WD2797 chip and a Xilinx XC9572 CPLD, plus other discretes 
to form a Floppy disk controller card. 

All that would be needed to fit this to a Coco would be to resynthesize the CPLD to the 
address range for the Coco Floppy address and relayout he card to fit the Coco form factor. 

For the CPLD code it appears that he has included it in his documentation and all that is 
needed is to change the address decode location, instantiate the modules and sysnthesize 
the new code to program the CPLD. 

james


On 9 Aug 2006 at 18:28, Mike Pepe wrote:

> > Though I guess you would need more glue logic, unless you use a CPLD or
> > something like that.
> 
> Maybe less. It depends on how I do it.