Hello,

Is it possible to change the specifications of Novag Constellation Junior ?

1. There is no crystal (only capacitor and coil) but the external frequency is less than 4 MHz : The internal clock is therefore about 1 MHz (HD6301 divides the external clock by 4).

2. There is no external additionnal RAM to this microcontroller , so only 128 bytes for RAM.

Cordially.

ps : I haven't figured out (1/2 hour) how to modify this myself

Sorry for not answering your question - just a tiny remark.

About ten years ago I wrote a little article about Constellation Junior:
https://www.schachcomputer.info/foru...llation+Junior

Perhaps one could add this site under weblinks when updating the wiki
with the correct specifications for Novag Constellation Junior.

Hans-Jürgen