Conectando a BANnet X.25 con módem de 9600 baudios
Conectando a BANnet X.25 con módem de 9600 baudios
Domingo da Dave-entrevista: David Plummer entrevista David Cutler
#MundoRetro #DavePlummer #DavesGarage #DavidCutler #entrevista #RSX11M #VMS #Windows #WindowsNT
3 horas, 10 minutos e 27 segundos de David Plummer entrevistando ninguém mais ninguém menos que David Cutler - que, para quem anda com a memória fraca, é o pai do RSXm, do VMS, do Windows NT (e portanto de todo o Windows como o conhecemos hoje em dia) e de sei lá mais o
@dosnostalgic VAX/VMS circa 1978 used to boot with PDP-11 RSX-11M compatibility mode available and a fair chunk of the apps in the early VAX/VMS versions were RSX-11M apps running in compatibility mode.
The VAX-11 boxes supported PDP-11 instructions in hardware.
You could run your existing PDP-11 RSX-11M apps directly, too.
That all ended at VAX/VMS V4.0 (~1984), and with then-new VAX models after VAX 8600.
VAX 8600 was originally to be named VAX-11/790, but marketing marketed and dropped the -11 with the “architecture for the ‘80s”.
PDP-11 RSX-11M compatibility mode became a separate product, and the PDP-11 instructions were emulated, and the -11 was dropped from VAX.
Technically, an LSI-11 console processor booted RT-11 from the 8” console floppy which then booted the VAX-11/780 (organizationally within he hardware, the VAX was an enormous LSI-11 peripheral) which ran VAX and PDP-11 instructions and which could run simh emulator to emulate PDP-11 running RT-11. If the LSI-11 failed—as happened on a couple of occasions—the VAX could continue to run. Just not reboot.
The approach Apple used for migrations with Rosetta and Rosetta 2 was far smoother.
Yeah. Fun times. When it all worked.
There are shenanigans in newer boxes too, but they’re usually somewhat better hidden.
#digitalequipmentcorporation #OpenVMS #VMS #VAX #PDP11 #RSX11 #RSX11M #RT11 #retrocomputers #retrocomputing #history
Breakout, Pac-man and Missile Command on the PDP-11/73 with RSX-11M-Plus v4.6
https://toobnix.org/videos/watch/6886d044-298a-4b93-a429-8c27622407d3
Later, the "Brisbane computer based #totalisator" was running on a #PDP11 running #RSX11M in two mobile vans/trailers, each one hosting a twin PDP11 running in hot standby mode.