HP15C LE vs. HP15C

[robert rozee]

(10-06-2014 07:39 AM)Paul Dale Wrote:  There is an exposed SPI bus which we could use for extra storage space. How would one program it? What would the performance be like?

Pauli

the performance would be mediocre at best, but then that is one of the trade-offs. i'd envision any such storage being used for infrequently used code written in the high-level "calculator language", that could be swapped into ram when required.

or it could be used just to hold user programs. this is what the MicroMite does - a single-chip basic interpreter that runs basic programs from flash.

but then, as others have noted, with the 30B being retired the future is rather limited.

btw, i am surprised that the 43S has such a long lead. it seems that with a 32MX795 and a few wires (quite literally) one could have hardware running within a few weeks. 512k flash, 128k ram, 2.3v to 3.6v (4.0v max) power supply range.


rob :-)