[BBC-Micro] Curse of the long TUBE cable
julesrichardsonuk at yahoo.co.uk
Wed Dec 20 19:40:36 GMT 2006
Pete Turnbull wrote:
>> a) render the cheese wedge redudant and thus lose some of that show-off
>> quality :)
> You may be right -- there may not be enough room in the cheese wedge for
> two cards. But if there is, you could still do this, just break the
> links between the 5V rail and the 5V Faston tab on each, and fit the
> switch there.
I expect that there is room; remember that the ARM copro with the memory
expansion is two boards on atop the other. OK, so they'd sit closer together
than two separate boards will, but I bet there's space. Heat may well be a
I think I'd be tempted to find a basket-case wedge from somewhere and mount a
small muffin fan in the back along with the switch.
If the PSU was a stock item and designed to cope with the 32016 / ARM boards
then I expect it'd have no trouble driving a 6502 / Z80 combo.
>> c) raise questions about the capability of the model B power supply, which
>> is already running a floppy disc drive and an Econet upgrade.
> It has a fair amount of spare capacity. I used to have one Beeb with
> two floppies on the auxiliary connector, speech processor, a
> fully-populated ATPL ROM board, Econet, internal Econet clock and
> terminator, an EPROM programmer powered from the User Port, and the two
> 2nd processors.
OK, that's probably a record :-)
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