Will the new 12c with arm processor take the firmware for the 15C LE?
I do like the desighn of the 10 series calculators. Does the 12C+ have enough memory space to make it possible to have a 12C, 15C and 16C rom on board, so the calculator to run would be selectable? I know this would prove more complicated than it appears!
hp12C capability
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10-13-2011, 08:48 PM
10-13-2011, 09:45 PM
Quote: Yes. The hardware is identical.
Quote: Is 128 kB enough?
10-13-2011, 10:21 PM
I would think the annunciators would be different.
10-13-2011, 10:40 PM
It has been done, with modification to the older hardware.
I'd be interested in replacing the guts of an original, non-working 15c with the internals of a new 12c and flashing it with the 15c firmware. Edited: 13 Oct 2011, 10:43 p.m.
10-13-2011, 11:29 PM
Quote:
For an AVR target a KEMU config including 11c/12c/15c/16c support
/usr/bin/avr-size kemu_m1284p.elf
Note this in on a modest 8-bit AVR core which isn't exactly
Even a 64KB sam7l would suffice if the above assumption holds.
RWM (bss + data above) however would need to be partitioned
10-13-2011, 11:48 PM
Quote:
The lcd glass used in the encore voyagers is identical to the
I found this simplification convenient, allowing use of a more
10-14-2011, 12:20 AM
Thanks for the knowledgeable answers so far. It would be an awesome combination and appears to be possible. Maybe the 12C re purposing project could be restarted to accomplish this
10-14-2011, 07:11 AM
I am going to take a wild guess and say that though they look very similar, that the 12c+ and the 15c LE are actually a little bit different. The 20b and the 30b have some minor difference that allows the 30b F/W to recognize that it is running on a 20b chassis. On the 20b chassis, HP was a bit clever here and the 30b F/W runs in a reduced "20b" mode -- none of the 30b-specific functions run. So, given that I own neither a 12c nor a 15c LE, that if you could get ahold of the 15c LE F/W, that it would not run on the 12c chassis. Note that this is likely a one direction limitation. We have seen that 12c F/W does run on a 15c LE just as the 30b will run the 20b F/W. Just a guess...
10-14-2011, 11:58 AM
Quote: This is true with the exception of the 12CP, it has different annunciators and uses all of them. It has larger digits too. |
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