What is Nostr?
Michael Engel /
npub1qr3…h5my
2023-09-08 00:59:45
in reply to nevent1q…jwgv

Michael Engel on Nostr: npub13levf…s6saf Ha, I also just checked that the enables are grounded 🙂. The ...

npub13levfmuj9uu5gy4mhh0tg5nkujqujkyky8220rd0dkwpm4p950eqss6saf (npub13le…6saf) Ha, I also just checked that the enables are grounded 🙂. The schematics seem to indicate that the MSB output bit 7 only gives a signal "SN" (https://github.com/warmech/lisa-hardware/blob/main/CPU%20Card/Schematics/Video.pdf), so I assume this is only used to generate the "magical" Lisa serial number – there are three different versions of the PROM on bitsavers (SN_*.BIN at http://bitsavers.informatik.uni-stuttgart.de/bits/Apple/Lisa/firmware/).
Author Public Key
npub1qr3r7e8stpe05hlxk4uyxa0vajqlmy6gge4acle5hdl5n0qjqwfqjlh5my