[Coco] memory expansion, SPI interface with VGA output
henrymainville at gmail.com
Wed May 1 08:36:53 EDT 2019
Sounds like a lot to ask for, and who has it all ? I think Tormod's MOOH
<http://tormod.me/mooh.html> might have provided enough functionality to
make it possible.
Thanks to the work of Tormod, CoCo/Dragon users can get a memory
expansion board with an SPI and MicroSD interface which helps greatly if
you want expanded functionality and ease of development on the CoCo/Dragon.
In the mean time, there's a project I've been keeping my eye on which
has been the VGATonic
serial VGA graphics module which is targeted towards microcontrollers
and embedded devices with exposed SPI or TTL interfaces and capable of
driving a display at 640x480
on your serial speed.
I think these two modules might make the perfect combo for modernizing
6809-based computers like CoCO/Dragon but it might need a bit of dev
work on drivers for NitrOS-9 or FUZIX to detect the SPI interface and
drive the video module connected to it.
I don't know for sure if it's even feasible but I would think so and I
also wanted to share incase anyone else was curious.
Have a nice day and happy hacking!
More information about the Coco