[Info-vax] VMS 5.0

[Johnny Billquist]

On 2011-11-08 22.11, Bob Koehler wrote:
> In article<j9c0g9$fr2$1 at Iltempo.Update.UU.SE>, Johnny Billquist<bqt at softjar.se>  writes:
>
>> Just read the manual for the VAX-11/780, by the way. standalone backup
>> for that machine is 5 8" floppies. Reading through it, it appears to
>> take about 10 minutes to boot the standalone backup...
>
>     The serial port interface to the 8" floppy (1 word programmed I/O, I
>     think) was much faster than the interface to TU58.  11/750 was a
>     downgrade from 11/780 in more ways than one.

Well, the RX01 don't have a serial interface, to start with. :-)
But yes, it was programmed I/O (no DMA). But that is equally true of the 
TU58 interface in the 11/750, except that one actually is serial, and 
runs at 9600 bps.

	Johnny