[Oberon] Flash wear levelling

[peter at easthope.ca]

From:	Paul Reed <paulreed at paddedcell.com>
Date:	Fri, 25 Sep 2020 09:13:58 +0100
> I suppose you could have cheap+endurance by using a PDIP package for 
> the SPI flash and socket it, replacing it when it wears out, but then 
> you have the price of the socket, the through-holes and the larger 
> footprint (which really look almost comically huge these days on a 
> modern surface-mount-technology design), the decreasing availability 
> of such packages, etc.

A 44 pin connector on the board with a CF card is another klunky 
possibility.  Smaller than a large pencil eraser.  =8~)  "Old 
fashioned" but inexpensive and reliable, and the ATA driver is well 
established in ETH Oberon already.

The USB connector on the RiskZero offers too many possibilities there.

> For the System Construction class last year, we used on-board SPI 
> flash ...

That's a commercial board?  Made to order?  

Do the students solder on it?

Do they keep it at the end of the course?  Used again next year?

Thanks,                           ... L.

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