newRPL: Now for 39GS and 40GS! [June 29-2017]

[Claudio L.]

(06-29-2017 06:15 PM)yoeljacobsen Wrote:  Flashed my 39gs.

A few initial comments:
- On first boot the contrast is very low.
- Very high contrast is required to read the key character in menus but it looks ok.
- The ON+F4 combination to get to the testing (and then reflashing) menus no longer works.

BTW these units are being sold at about $15 over Aliexpress. It just became the lowest cost RPN calc AFAIK.. :-)

The initial contrast is set to 7 on a scale from 0 to 15. On my 50g it's a bit light too, but nothing that a couple of On-Plus / On-Minus can't solve.
Regarding the diagnostics menu, its code is not on the bootloader, but in the ROM we replaced so it gets wiped out of the calculator. This happens on all targets and it's normal. You can still get to flashing by using Plus and Minus simultaneously during reset, that part remains in the bootloader.

I'm interested in how the keys are mapped in hardware, is the ALPHA key working as a left shift? and the tick mark working as Alpha?