> From: Tony Duell
> Were there 2 things called the KM11?
> The KM11 that I know is the maintenance unit
> From: Paul Birkel
> I think that we're all talking about the ML11-A, or at least are
> intending to ... although the Subject line has been erroneous from the
>
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Tony Duell
> via cctalk
> Sent: Friday, September 24, 2021 4:12 AM
> To: Noel Chiappa; General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: DEC KM11 (Was: DEC KL11)
>
&
On Thu, Sep 23, 2021 at 6:38 PM Noel Chiappa via cctalk
wrote:
> Huh? The KM11 doesn't plug into the UNIBUS (or QBUS); it's a MASSBUS device (a
> solid-state storage device, actually), so it plugs into an RH11 or RH70 or
> something like that. (I should work with the VAX MASSBUS controller, too.)
My notes (from sources unknown) say (of the ML11A):
solid-state (ram) disk; 2MB/s xfer
1-31 arrays of 512 or 2048 blocks ea
using 11/70 MK11 (MOS) memory
looked like RS03/RS04 to s/w
Ok, that makes sense.
http://gunkies.org/wiki/RS03/04_disk_drive
says about *REAL* RS03/04
> But the sector format is a different matter. If it's designed for
> PDP-11 and friends, presumably it has a 512 byte sector size.
> For PDP-10 or -20 use you'd presumably want a sector size consisting
> of some round number of 36 bit words.
576 byte sectors (128 words), IIRC.
The unit of allo
> From: Paul Koning
> But the sector format is a different matter. If it's designed for
> PDP-11 and friends, presumably it has a 512 byte sector size. For
> PDP-10 or -20 use you'd presumably want a sector size consisting of
> some round number of 36 bit words.
Actually, the
> On Sep 23, 2021, at 1:38 PM, Noel Chiappa via cctalk
> wrote:
>
>> So I can't say whether they are 18 bit compatible.
>
> Huh? The KM11 doesn't plug into the UNIBUS (or QBUS); it's a MASSBUS device (a
> solid-state storage device, actually), so it plugs into an RH11 or RH70 or
> something
> From: Mark Kahrs
There's a typo in your original Subject: line: the KL11 is a very early UNIBUS
(probably the very first UNIBUS device ever, looking at the board's Mxxx
number) asyn serial line interface:
https://gunkies.org/wiki/KL11_asynchronous_serial_line_interface
> manx tells
