4 ms·
It was probably a VAX 11/780. If you were cheap you purchased an 11/750. The 780 had a PDP-8 for a console processor. https://news.microsoft.com/features/the-en
by Hilift 2y ago
It was probably a VAX 11/780. If you were cheap you purchased an 11/750. The 780 had a PDP-8 for a console processor. https://news.microsoft.com/features/the-engineers-engineer-computer-industry-luminaries-salute-dave-cutlers-five-decade-long-quest-for-quality/ https://news.microsoft.com/features/the-engineers-engineer-c...
- SulphurCrested 2y agoThe console processor was an LSI-11, a PDP-11 on a chip. It hung off the inside of one of the cabinet doors. It was responsible for booting the 780 and also gave VMS access to its own 8″ floppy drive, which had a habit of overheating. The 750 was later technology, IIRC MOSFET. It also lacked the 780’s “compatibility mode”, which allowed VMS to run 16 bit RSX-11 executables by implementing the PDP-11 instruction set in addition to the 32 bit VAX one, and could boot without a console processor. If you didn’t need all the users on one machine, the 750 was cheaper per user.