Re: Flashboard questions...

Otto:

The idea of tearing the innards of a CF card out of its case did occur
to me.  The problems I found with that idea were two-fold:

1. Without its case and connector, the CF card wouldn't fit back into
a card reader, pcmcia carrier, or a CF slot for reprogramming. (one of
the issues I am attempting to solve is not only the initial programming,
but also undoing subsequent "botched" programming).

2. The CF board still takes up too much space - there's no room for
TSOP-style RAM.  However, with BGA RAM, it might work (my initial
research for the stripped-CF idea only focused on TSOP RAM as BGA RAM
wasn't yet available).

I'll look again at the stripped-CF idea with an eye towards using BGA
RAM - however, the stripped CF *must* retain its connector to solve
problem #1 above.

Regards,
-MarkG


[email protected] wrote ..
> Mark Gollahon <[email protected]> wrote: 
> > Actually, a CF card would be the perfect way to do this, since it has
> > three modes of operation (ATA/IDE, PCMCIA, and straight memory access).
> > The other storage mediums (MMC/SD/XD/SM/etc.) are serial-based and
> > the additional circuitry would more than offset the media's size. But
> > only if there was enough room. But I've already shown you that there
> > isn't enough room.
> 
> I just teared a cf shielding off, and noticed that after
> soldering off the connector, it would well fit in the place of
> the rom board. I'm not quite sure about the amount of wires we'd
> have to draw, but the connectors would be near each other and
> there's even some place to fit the wires. If not, then I'd go
> for dremeling the smartcard-slot :)
> 
> This might end up with eg. the Epsons display chip interfering 
> with the cf, so ofcourse it would be good to cover the cf with
> tinfoil or something that'd shield it.
> 
> Cheers.
> Otto Waltari

_______________________________________________
jornada mailing list
[email protected]
https://handhelds.org/mailman/listinfo/jornada