[Coco] NitrOS9 LEVEL 2 running on Multicomp

[Dave Philipsen]

Yes, the Cyclone II board that Grant uses is nice for a basic project 
but you run out of I/O pretty quickly.  I have a Cyclone IV board that 
I've worked with and am pretty happy with.  The build quality is also 
considerably better than the EP2C5 boards I have purchased.  At 16 bucks 
though, you can hardly go wrong!

I've already got a working 6809 system with 512K SRAM (10 ns) and 4MB 
Flash and a host of other little goodies but I have not pursued getting 
OS9 to run on it.  It will run full tilt at 25 MHz without a problem.  
So my proposed new design won't take quite so much debugging since I'm 
already part way there. But, yes, a dual-headed board maybe even with 
two SD card sockets (1 for backup) and some other goodies and maybe even 
a little prototyping area...

The FPGA card costs about double of what the EP2C5 board costs ($34) but 
you get double the logic elements (10K), more than triple the internal 
block RAM (~50K), and about double the I/O (164) so it's probably worth 
it if you're gonna use all of the stuff.

Dave


On 4/6/2017 5:21 PM, Neal Crook wrote:
> Sorry, $25, not $20. ~$2.50 each (10 boards for ~$25). Actually, they
> guarantee to ship a minimum of 8 boards; I received 12 in my last batch of
> "10" (I guess they over-build and the yield is good). Yes, it's hard to
> find on dirtypcbs.com - you have to page though their shared boards until
> you find it. It's named Cyclone2v110.brd and (in case this helps your
> recognition) it's RED.
>
> Dave: your board sounds intriguing (I considered a 2-headed board: one
> screen devoted to debugger) but I guess it will need a bigger/more pricey
> FPGA because the Cyclone II is pretty much *full*
>
> Neal.
>
> On 6 April 2017 at 20:16, Bill Gunshannon <bill.gunshannon at hotmail.com>
> wrote:
>
>> ________________________________________
>> From: Coco [coco-bounces at maltedmedia.com] on behalf of Dave Philipsen [
>> dave at davebiz.com]
>> Sent: Thursday, April 6, 2017 3:07 PM
>> To: CoCoList for Color Computer Enthusiasts
>> Subject: Re: [Coco] NitrOS9 LEVEL 2 running on Multicomp
>>
>> And, of course, that's just the PCB that the Cyclone II board attaches
>> to, not the Cyclone II board itself...
>>
>> Dave
>>
>>
>> On 4/6/2017 2:04 PM, Neal Crook wrote:
>>> Bill,
>>>
>>> the blank pcb 10cm x 10cm costs about $20 for a batch of 10. Easiest to
>>> just buy them then post here with your spares
>>>
>>> Neal
>>>
>> _______________________________
>>
>> I'm probably going to wait, but did you mean 10 boards for $20 or $20 a
>> board
>> if you order 10?  If the former I may just order some of the, too.  It's
>> all for fun
>> anyway.  Oh yeah, and order from who?  I went to dirtyboards but couldn't
>> figure
>> out how to actually order (or even find) anything on their website.  Not
>> one of
>> the better sites I have visited.
>>
>> bill
>>
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