[Coco] Mark McDougall's CoCo 1/2 FPGA Project
Mark McDougall
msmcdoug at iinet.net.au
Tue Nov 14 21:19:57 EST 2017
On 15/11/2017 11:50 AM, Dave Philipsen wrote:
> The EP2C5 eBay boards only have about 14.5K of internal block RAM. If
> you disassembled both the CB and ECB ROMs and then re-assembled
> eliminating some stuff you don't need you *might* get them to fit but
> then you would have no memory for font tables or anything else.
Without external RAM you won't get close to running any sort of Coco
emulation on a 2C5.
There's also no video...
> I don't know what the requirements are for Pace.
The default configuration is to load the ROMs (including HDBDOS) into
on-chip RAM and use external (S)RAM to emulate the Coco DRAM.
Also without any storage you're stuck without any means to load/save
programs, so pretty useless, unless you somehow rig up a Drivewire server.
The EP3C16 board o the waveshare site has (just) enough block RAM but
again - no video, no storage.
Regards,
--
Mark McDougall
<http://retroports.blogspot.com.au>
More information about the Coco
mailing list