Watch from 6:59 in this video: https://www.youtube.com/watch?v=EV1ki6LiEmg
The program is this simple one (numbers are in octal):
- Code: Select all
0000 303 JMP 020
020
000
0020 303 JMP 000
000
000
There are at least three different displays:
1. Altair Clone (see video starting at 6:59) lights up D7, D6, D4, D1, D0.
2. AltairDuino lights up D7, D6, D1, D0. D4 is not lit.
3. Altair 8800c (and real Altair?), all the Data lights D7 - D0 are lit.
Which one should be correct?
Is this a bug in the Clone or AltairDuino emulation software or are there variations of the 8080A chip that would act this way?
Tom L