Re: apple II roms side not...mousetrap ROM chip

["brad" <mrbrad@ll.net>]

depending on how hard it is to whip one of these together...you could prob
sell a few on ebay for change...i'd think at least a market for them the
size of some of the clock chip orders for the //e i've seen on ebay

anyway....just a thought...i have an eprom card or two have never been brave
enough to muck with the beast without hand holding...

ah..yet another project i'll never get to..

my goal these days on apple ii projects is to keep a list of goals for my
apple // projects that i'll never get too

endless loop cause i continue to get stuff from ebay or elsewhere...circular
don't ya know

brad
former sysop lost-gonzo.com (still down)




"Quadrajet1" <quadrajet1@aol.com> wrote in message
20040622043308.10778.00000309@mb-m25.aol.com">news:20040622043308.10778.00000309@mb-m25.aol.com...
> >I thought i'd ask these guestions due to the recent discussion thread on
> >eproms and roms on the apple // and //e etc
> >
> >I have an exotic product called the "moustrap" chip....for the //e ..it
was
> >made (briefly till apple sued them) by a
> >company that took a switchable ROM (ie. able to hold the old
pre-mousetext
> >char set and also the new mousetext char set) on the same EPROM chip and
> >switch back and forth between char sets...
> >and it was all incased in a hard plastic with a nice little label called
> >"mousetrap" w/date (shinny metal foil label whoo who) with a cable off
the
> >end of it and a toggle switch...so back in the day..(1983 or so)
>
>  I made a number of them mods back in the day, right after the enhanced
//e
> came out.  Never got sued since I didn't commercialize it, but probably
made
> 40-50 sets total.
>
>   But what I did was take the 3 ROMs and switch from regular //e and
enhanced
> //e. The 2 ROMs and the video ROM got switched.  It was so simple with an
EPROM
> burner.  Take a 27128 and burn the lower half of CD ROM with regular //e
code
> and the upper half with enhanced //e. Same with EF ROM and the Video ROM,
> except it used a smaller EPROM. Obviously a 65C02 was installed.
>
>   All that was needed was to toggle 1 pin high or low on each ROM to
switch
> back and forth.  Tie all three pins together, all done with 1 wire. You
would
> have to reboot once you switched over of course.
>
>   I did this mainly because when the enhanced //e came out, there was some
> programs that had problems with the enhanced //e ROMs, and not just the
new
> Mousetext characters.
>
>   I think the market for these fizzled out around 18-20 years ago.  Wasn't
long
> before the software guys made their software compatible.  I may still have
one
> installed in my personal Frankenstein //e, can't remember.
>
> Raymond