HP-65/67 Instructions in HP-41?

[Dieter]

(12-18-2015 08:00 PM)toml_12953 Wrote:  I should have made it clear. I'm using a DM-41L which has no ports for peripherals.

Ah, OK – this means you will not have to read HP67/97 program cards, thus no compatibility functions are required.

BTW, the subject refers to "HP-65/67 instructions". There are no HP65 instructions in the card reader ROM. Also HP65 cards cannot be read. But there is a kind of "HP65 compatibility command" inside the HP41 ROM itself: unlike the 67/97 it features OCT and DEC. ;-)

Dieter