Scientific RPN Calculator (with ATTINY85)

[Paul Dale]

(03-06-2018 02:28 PM)pier4r Wrote:  The 35 and the Sinclair did not use different integrated circuits instead of a rom? I did not know.

The 35 had three 256 word ROMs, all external to the processor ICs. The gave 768 10 bit instructions. The Sinclair had everything in one IC and had 320 11 bit instructions in total.

Pauli