HP97 The journey begins

[teenix]

Hi all,

One more hurdle hopefully crossed.

Most of it appears to be working, however, the card read/write is being cranky so I must have inadvertently changed something while chasing down problems.

Below is the new CPU board as it currently stands.

It looks complicated, but broken down into parts, it becomes simpler. One of the new parts is a small Bluetooth module which means that transferring programs to the on board memory chip, setting options and re-flashing the firmware can be accomplished without opening the calculator or modifying the casing for connectors. Just pair the calculator to a PC and away you go.

More fun tomorrow.

cheers

Tony