KL-10B in DEC-20 [was RE: Who's rewired their house for this hobby?]

[Phil Budne]

Rich wrote:
> ITS ran on exactly 1 KL, MIT-MC.  It was a "Model A" system, probably a KL10B
> but I'd have to ask the owner.  It's currently in storage in Sweden.
....
> All KL10-based systems have RH20s.  The front end 11/40 has an RH11, and one
> disk (at least) has to be dual-ported between the front end and the -10.

I think MIT-MC was a "1080" and only had RH10s.  I think they used a
DL10 for PDP11 interfacing (including chaosnet and some disks), and
ran KLDCP (pre RSX20) on the console front end....

I don't remember ever having heard the ITS equivalent of "Tony in RH20
Land"...  Ah... here is some of ITS SYSTEM;CONFIG 188:

    IFE MCOND MX,[
    DEFOPT KL10P==1         ;MX IS WHAT WE CALL THE KL10 NOW
    DEFOPT MAXJ==120.       ;MAX NUMBER OF JOBS ALLOWED
    DEFOPT SWBLK==1         ;1 => SWAP BLOCKING, 0 => PRIVILEGED USER
    DEFOPT SWPWSP==0        ;NO WORKING-SET SWAP SCHEDULER
    DEFOPT PAGPRE==1        ;PAGE-IN PREEMPTION
    DEFOPT SCHBLN==20.      ;NUMBER OF RUNNABLE JOBS TO REMEMBER

    DEFOPT NQS==6           ;# OF DISK UNITS (3 RP04'S AND 3 T-300'S)

    DEFOPT NTUTBL==2        ;TUTS ARE TWO BLOCKS LONG
    DEFSYM NUDSL==500.      ;# USER DIRECTORIES ON DISK
    DEFOPT NQCHN==50.       ;NUMBER 2314 CHNLS
I _think_ this means the number of open files...

    DEFOPT RH10P==1         ;HAS DEC RH10 DISK CONTROL (RP04)
    DEFOPT T300P==3         ;TRIDENT T-300S VIA PDP-11 START AT DRIVE 3
ISTR a disk farm labeled "Moon's Laundromat"
    ...
    DEFOPT DL10P==1         ;HAS DL10/DC76 TTY CONTROLLER
    ...
    DEFOPT DLCP==1          ;CHAOS NET GOES THROUGH DL10

    ....
    DEFOPT NETYS==33.       ;# KL-10 DTE20 TTYS
    NEWDTE==1               ;TEMPORARY CONDITIONAL TO ENABLE NEW DTE20 PROTOCOL

I hadn't remembered *THAT*! ^^^^

    DEFOPT NDLTYS==4.       ;# TTYS ON DL10/DC76
			    ;Note: 3d TTY on DL10 is VT52 by console.


It looks like:
AIKA had a systems concepts DC10
MLKA and DM had RP10s (RP02/3) controllers