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
Ethan Dicks via cctalk wrote:
On Thu, Sep 23, 2021 at 6:41 PM Jonathan Stone via cctalk
wrote:
I've read that there is circuitry in the expansion base (BA40A?) has circuitry
. Does anyone know what the circuitry does? Is it required for SCSI
operation? (I hope not, or I'll have to kludge o
On Thu, Sep 23, 2021 at 6:41 PM Jonathan Stone via cctalk
wrote:
> I've read that there is circuitry in the expansion base (BA40A?) has
> circuitry . Does anyone know what the circuitry does? Is it required for
> SCSI operation? (I hope not, or I'll have to kludge one up to make use of
> pk2
>
> I've read that there is circuitry in the expansion base (BA40A?) has
> circuitry . Does anyone know what the circuitry does? Is it required
> for SCSI operation? (I hope not, or I'll have to kludge one up to make
> use of pk2k SCSI boot-roms!)
>
I don't know what circuitry there is or is no
I've read that there is circuitry in the expansion base (BA40A?) has circuitry
. Does anyone know what the circuitry does? Is it required for SCSI
operation? (I hope not, or I'll have to kludge one up to make use of pk2k SCSI
boot-roms!)
> 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
Subject: Re: PDP-11/73 boot issues
References: <87ilytoikj@carbon.nat.rhwyd.co.uk>
<87fstxohuj@carbon.nat.rhwyd.co.uk>
<21789e85-2aa4-3b61-db31-b21fd8c08...@dunnington.plus.com>
<87czp1obv4@carbon.nat.rhwyd.co.uk>
User-agent: mu4e 0.9.18; emacs 27.2
In-reply-to: <87czp1obv4@c
On 9/23/2021 8:12 AM, Scott Quinn via cctalk wrote:
On Wed, 2021-09-22 at 12:00 -0500, cctalk-requ...@classiccmp.org wrote:
Currently the Hobbyist Program covers Alpha and Itanium. We?ve been
told it will cover x86 at some point. I for one can?t wait for x86,
as I don?t really want to add an I
On 9/22/2021 7:21 AM, Philip Pemberton via cctalk wrote:
Hopefully a few of the DEC/VMS fans here might be able to help!
I'm on a bit of a quest. I've been given some old VAX/VMS software -- a cross
compiler and some source code -- that I'd like to get running. My goal is to
get the source cod
> 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
On 23/09/2021 14:23, Paul Koning via cctalk wrote:
On Sep 23, 2021, at 9:12 AM, Scott Quinn via cctalk
wrote:
...
Isn't VMS DCL pretty close to RSX? Never used RSX, but that is what I
was always told.
I don't know how close it is to RSX, but I do know that RSTS (V9 and later) DCL
was explici
A few details for the curious:
It's housed in a BA-11 box with 3 controller cards.
The Massbus paddles fit into that box and terminate in flat ribbon cable,
not the massive cables.
The DRAM chips are 4116s.
manx tells me that these documents were known to exist:
PartTitleStatus
EK-0ML11-TD *ML11
> On Sep 23, 2021, at 9:12 AM, Scott Quinn via cctalk
> wrote:
> ...
> Isn't VMS DCL pretty close to RSX? Never used RSX, but that is what I
> was always told.
I don't know how close it is to RSX, but I do know that RSTS (V9 and later) DCL
was explicitly modeled on VMS DCL, including the DCL
On Wed, 2021-09-22 at 12:00 -0500, cctalk-requ...@classiccmp.org wrote:
> Currently the Hobbyist Program covers Alpha and Itanium. We?ve been
> told it will cover x86 at some point. I for one can?t wait for x86,
> as I don?t really want to add an Itanium to run some of the newer
> software.
>
>
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