[Coco] Time for that CoCo 3 ethernet card! Twitter access on the C64.

[Mark McDougall]

jdaggett at gate.net wrote:

> I have a copy of Gary's work before his webpage went down. Yes it can be 
> fairly easily ported to any Xilinx FPGA if you want the basic ROMs internal 
> to the FPGA. External ROMS would require some modification if you 
> wanted to go into a smaller FPGA. 

Thanks James, but I too have a copy and have ported it to an Altera EP2C35 
(Cyclone II) board. I had to mangle the use of SRAM to target hardware with 
a single 16-bit wide SRAM. I also hooked it up to a Gamecube controller to 
emulate the Coco analogue joystick.

Unfortunately, there are one or 2 serious compatibility issues that prevent 
a lot of games from running. I believe that nested GIME interrupts is one of 
them.

I was working on a project based on Gary's design but rather unfortunate 
circumstances has sadly put that on hold atm.

Regards,

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