TI-66 double speed mod

[pauln]

Yes, some instructions may not get registered.

I think that auto-insert is, from an usability point of view, the right way to go, but the calculator needs to be fast enough.

That's why I'm surprised that the first programmable handheld, the HP-65, was able to achieve that. In contrast, the HP-25 overrides but it was a much more affordable device.