21 Apr
2010
21 Apr
'10
12:23 p.m.
On 4/20/10 10:47 AM, H?lscher wrote:
> Has anyone got manuals for the DEC DMP-11 synchronous serial interface?
> It was a common interface for multipoint DDCMP DECnet connections in the
> era before Ethernet became well-established.
>
On Tue, 20 Apr 2010 12:03:45, Al Kossow wrote:
The documents for the DMR-11, which uses the same board set, is on bitsavers
under pdp11/unibus.
I don't know what the difference is between the
DMP and DMR
AA-H803C-TE DECnet-VAX System Manager's Guide says on page 2-45:
"DECnet-VAX supports four DDCMP line devices:
the DMC-11, the DMR-11, the DMP-11, and the DMF-32 synchronous line.
The DMC-11 and the DMR-11 are point-to-point line devices and are
considered identical. The DMP-11 is either a multipoint control,
or multipoint tributary line device.
The DMF-32 synchronous line is a point-to-point or multipoint tributary line
device."
The boards are identical at the module number level seemingly, but there are most
probably different subtypes of the M8207 DMx microprocessor and/or M8203 line units
I think the M8207-RA is for the DMR11 and the M8207-YA/YB/YC is for the DMP11.
Anyone to confirm or doubt that?
Regards,
Ulli