LastXY Register for WP34S

[Paul Dale]

(12-01-2014 05:10 PM)brouhaha Wrote:  The undo save could be in the non-battery-backed 4K of RAM. If you turn the 34S off, or leave it idle so it turns itself off, then undo would not be available when you turn it back on.

Flash space could probably be found. The problem is that we use every last byte of the volatile RAM during some operations (statistics and matrix functions). There simply is nowhere to store UNDO memory.

The only way I can see to include such a feature would be to install a SPI memory device.


- Pauli