HP42S with non-volatile ram

[G-SAN]

Greyuser and lyuka,

I have read with great interest the posts on adding en FRAM to the HP42S.

I was wondering if the room between the PCB and the bottom of the calculator leaves sufficient room to add another PCB ?

The case of the HP42S tapers to a lower height on the bottom (compared to the top).

I understand the placing of the small protoPCB for the SN74LVC1G97.

But it seems there is still some room to add a PCB with the width of the main PCB en and about 10mm height, if one glues this PCB to the EMC shielding.

I have never opened my HP42S (3143S08979), so I have no idea if the free height between the EMC shield and the backside of the calculator is sufficient to add a PCB with SMD components.

Could any of you give mee feedback on this ?

best regards,

Gert