[Coco] NitrOS9 LEVEL 2 running on Multicomp

[Dave Philipsen]

Ok, I'll definitely let you know.  I've got a board right now that has 
all of the basic circuitry on it and probably more than a person would 
ever need/want.  But the board is rather spacious as it was designed to 
fit a certain form factor and the connectors are not necessarily what 
you would be used to.  At any rate, the important thing is that the 
general design has been proven and tested.  I've got one on my bench 
that has been running continuously 24 hours a day for over a year now 
with no intervention other than an occasional firmware update here and 
there.  And I've got routines that will work for manipulating the flash 
memory, rtc, etc. that are working.  It shouldn't take too long to 
export the general design to a new board.  What is most important to 
you?  Ultra small board size?  Bunch of serial ports?  Digital I/O? Lots 
of memory?  etc, etc.?

Dave


On 4/6/2017 11:12 PM, Kip Koon wrote:
> Hi Dave,
> I have been reading your email about the Multicomp PDCB upgrade you are working on and I am truly impressed.  When you are ready to do a run of them, I would like several.  Thanks a bunch.
>
>
> Kip Koon
> computerdoc at sc.rr.com
> http://www.cocopedia.com/wiki/index.php/User:Computerdoc
>
> -----Original Message-----
> From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Dave Philipsen
> Sent: Thursday, April 06, 2017 7:09 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] NitrOS9 LEVEL 2 running on Multicomp
>
> 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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>>>
>
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