[Oberon] SRAM vs. BRAM

Jörg Straube joerg.straube at iaeth.ch
Tue May 12 07:10:39 CEST 2015


The Pipistrello board uses HDMI.
To generate HDMI output, the Oberon code is not changed at all. The HDMI driver is written in Verlog.

Jörg

> Am 12.05.2015 um 04:23 schrieb eas lab <lab.eas at gmail.com>:
> 
> Markus Greim wrote:-
> 
>> ..what I really
>> like about the Oberon system is that it's so simple and easy to
>> understand how it works, and this would add a bunch of fairly complex
>> code.
> ...
>> The price for the Pipistrello and the Oberon wing is about 200$.
>> Thats, compared with the Raspberry PI quite expensive, but we aren't
>> talk about 5 Mio. pcs. here.
> 
> rPi is a replacement PC & I should expect, more so the rPi2 with more
> than 2 USB-ports. But it's not for education, because it's closed.
> Even the boot-SD is *LABELED* <MicrosoftDOS>.
> And being linux it's not real-time.
> Also it uses a lot of current? - 250mA. What do mobile devices use?
> My one rPi in a shoebox with a 6V acco + a fat-diode has been delivering
> TestToSpeech, for 18 months, where the only control is the powerswitch,
> which <marks> the sound-files according to the stage-in-the-sound that
> power is cut: a kind of time-modulation.
> 
> What's remarkable is that after thousands of cut-power-in-flight cycles
> the SD shows no problem.  These semiconductor disks are remarkable.
> But the software for USB [which I load the sound files on to] is
> probably more that ETHO-total.
> 
>> After some fiddling with the Linux dd command for writing a micro SD
>> card it runs really out of the box!
> 
> I can't remember if <PO2013> gave the hopefully simple driver for SD.
> If so, that could reduce dependance on USB?
> PS2 for mouse, kybrd is simpler?  For an educational project.
> Is HDMI complex?
> 
> == Chris Glur.
> 
> --
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> https://lists.inf.ethz.ch/mailman/listinfo/oberon
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