TI-66 double speed mod

[pauln]

One problem with the linked list approach is that it needs 7 extra bits for each one of the 100 registers of the HP-65 (to point to the next step).

I guess this is why there is no a BST key in the HP-65 (it would require 7 extra bits per register to point to the previous step).

By the way, no BST key seems a huge flaw, unless I'm missing something.