|Re: Where's the RAM??|
Message #9 Posted by don wallace on 1 Sept 2005, 5:28 a.m.,
in response to message #8 by DavidY
Thanks for the quick reply David.
There certainly are a few talented people doing work in this area.
I like Meindert's effort and am amazed at what Diego has already done and what Monte is doing...
At the moment I am interested in doing a FORTH41 module and a
PPC module in one plug in ROMPACK. I am planning to use the quad flat pack version of a PIC chip which is backward compatible to
the chip Diego was using, an 18LF2520. I have some pictures on
my website, if anyone is curious.
Later I want to rewrite the code (if possible) to drop the
PIC clock speed and lower the power consumption. It will be a
while before I am ready to do that, though. I am far from sure
if it can be done. I like a challenge though.
Considering it's age, the 41 machine is very well designed.
I don't have any other HP calcs (or other gear), but I remember
when I first bought my CV in early 1981 it just mesmerized me...
I still get a kick out of playing with it and use it to do simple
project management using the TIME module I bought in 1985 from a guy who had upgraded to the CX, then brand new.
Since then my calculator has suffered some four different hardware failures, so I am not sure how much longer it will last, but it's an amazing, functional, beautiful relic from a bygone age.
I am certainly getting good at fixing them... ;-)