Micro PDP-11 53

The main goal has been to get BSD2.11 running a Micro PDP-11/53 Plus.

• hardware
  • KDJ11-SC in a BA411 enclosure
• setup
  • Installing BSD2.11
• docs
  • KDJ11-D/S CPU System Maintenance
  • KDJ11-D/S CPU User Guide
  • BA411

KDJ11-SC in a BA411 enclosure

I purchased this spare 11/53 off ebay -- it even arrived with a DEC cardboard box. This is exactly the PDP-11 I have looking for:

• has s-box handles -- to be used with my spare BA411 enclosure
• has 1536-Kbyte of RAM -- should have enough RAM to run TCPIP networking with out using extra memory boards
• has the PDP-11/53 boot ROMs -- not the DECserver ROMs
• has separate I/D space -- can run BSD2.11
• has a KA in the serial number -- it was manufactured in Kanata , only 6kms down the road

Here is the boot ROM output:

		9 8 7 6 5 4 3 2 1 

		Commands are Help, Boot, List, Map, Test and Wrap.
		Type a command then press the RETURN key: MAP

		KDJ11-D/S   ROM V2.0

		1536 K Bytes

		00000000 - 05777776     1536 KB    CSR = 17772100

I have a spare BA411. Would a 11/53 would work in a BA411? I left the first five non-QBUS slots empty and put the 11/53 board in the sixth slot. The 11/53 booted without any issues -- it appears to work fine:

card cage	module
slot one to five	empty non-qbus
slot six	KDJ11-SC
slot seven	DESQA-SA
slot eight	CMD CQD 223M
slot nine	TQK50-AA
slot ten	empty
slot eleven	empty
slot twelve	empty

Installing BSD2.11

I used maketape.c on the DECstation , running Ultrix, to create the TK50 boot tape.

I installed BSD2.11 with no problems:

• installed patch level 431
• required patch level 432 to boot of my MSCP hard disk
• used date 0505121114 to set the date to 2005
• read Steven Schultz kernel overlay emails before trying to link the kernel
• installed the remaining patches
• configured networking:

  		# uname -a
  		BSD busybee.on.kr 2.11 2.11 BSD UNIX #3: Thu Jun 16 22:55:56 EDT 2005     root@busybee.on.kr:/usr/src/sys/BUSYBEE  pdp11
  		# ifconfig qe0
  		qe0: flags=63
  				inet 192.168.1.53 netmask ffffff00 broadcast 192.168.1.255
  		# ping -c 1 www.pdp12.org
  		PING www.pdp12.org (206.191.28.202): 56 data bytes
  		64 bytes from 206.191.28.202: icmp_seq=0 ttl=253 time=33.334 ms