In message <001601c4ca22$6086ead0$0b00a8c0@PAARD>
          "Wouter van Ooijen" <wouter@voti.nl> wrote:

> If you legally use a wisp628 (bought one from me, bought a kit from me,
> bought a programmed chip from me, or built one for yourself
> home-brew-wise)

I've got one of each - a homebrew that I built from the plans on your website
(was a pig laying out the PCB though), and one that I built from a wisp628
kit.

> I have (I would say of course) no objection to you doing
> anything with it. My only point is that when you publish anything that
> is derived from my hardware or software you must make very clear that
> the same restrictions I apply still apply (with of course any
> restrictions you add).

So that would basically be:
  - You can homebrew a Wisp628, but you can't have a commercial PCB
    manufacturer make a PCB for you, nor can you distribute the PCB designs
    or sell PCBs.
  - You can make a Wisp628 for a friend, or program a 16F628 for a Wisp628
    programmer, but you must do it on a non-profit basis.
 
Seems fair to me, but I'd also add
  - If you make any modifications to the firmware, you must release them
    to the public free-of-charge. If someone asks for a copy of your modified
    Wisp628 firmware, you must give it to them.

> For adding more code to the current Wisp628 firmware: you could use a
> 16F648, with Jal for an 877 target. But for >2k code targets Jal
> generates more code (lots of page settinmg instructions), so you'd have
> to check wether the current code swould still work. I did try the
> current (f628 target) code on an f648 and that seemed to work OK.

I'd be tempted to do an Assembler rewrite, maybe using a simpler protocol, or
a variant of the Easyprog protocol.

> As for a big Wisp628 update: I will likely make a firmware/PIC update
> for the Wisp628, using a 16F87/88.

The PIC16F88 looks like a nice chip. Must remember to order some of those
to play with...

Later.
-- 
Phil.                              | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
philpem@philpem.me.uk              | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.me.uk/          | 48xCD, ARCINv6c IDE, SCSI
... I'd like to live like a poor person with lots of money.
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