[Coco] NitrOS9 running on multicomp

[Boisy G. Pitre]

Super work!

> On Oct 4, 2015, at 4:10 AM, Neal Crook <foofoobedoo at gmail.com> wrote:
> 
> Booted for the first time last night after getting the "final" bug out of
> my serial driver.
> 
> https://github.com/nealcrook/multicomp6809/blob/master/photos/re_20151003_multicomp_nitros_boot.jpg
> 
> The hardware is the 6809 flavour of Grant Searle's "multicomp" FPGA-based
> computer, along with a new logic block that supports a 50Hz timer interrupt
> and a coco-compatible memory mapper (which is not currently in use, since
> this is only a level 1 port).
> 
> The boot image is a standard floppy disk image file, slopped onto an SDcard
> at a Known offset and accessed by the disk device driver accordingly. This
> crude but effective technique allows the SDcard to hold multiple disk
> images - it actually holds images for multiple OS and bits of software
> (photos below).
> 
> I also have a version of the FPGA project set up for James Moxham's Cyclone
> II PCB daughtercard (Kip Koon has that one up and running with all my older
> ports)
> 
> Neal.
> 
> 
> https://github.com/nealcrook/multicomp6809/blob/master/photos/re_20150429_multicomp.jpg
> 
> https://github.com/nealcrook/multicomp6809/blob/master/photos/re_20150429_multicomp_cubix.jpg
> 
> https://github.com/nealcrook/multicomp6809/blob/master/photos/re_20150509_multicomp_basic.jpg
> 
> https://github.com/nealcrook/multicomp6809/blob/master/photos/re_20150509_camelforth.jpg
> 
> also running FLEX but I don't seem to have a photo of that.
> 
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