> I've been running and looking at the PDP-8/E INSTRUCTION TEST 1. And it > is supposed to write the BEL (07) character after each round of passed > tests. However the code loads and outputs the constant "0207", which is > 07 with the eigth bit set. I think the 8/E serial interface outputs all > eight bits in this case? > > I suppose a real ASR-33 would ignore the eight bit? > > Why does the code not load 07?
I would guess it is sending it as 7 (data) bits and even parity. -tony