From news.columbia.edu!sol.ctr.columbia.edu!math.ohio-state.edu!caen!batcomputer!news.reed.edu!usenet Thu Jul  1 14:11:41 EDT 1993
Article: 315 of alt.sys.pdp8
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From: bob@reed.edu (Robert Ankeney)
Newsgroups: alt.sys.pdp8
Subject: Re: PDP-8 emulators
Date: 1 Jul 1993 17:08:26 GMT
Organization: Reed College,  Portland, Oregon
Lines: 17
Message-ID: <20v5ma$7eu@scratchy.reed.edu>
References: <1993Jun27.152654.25750@crash> <1993Jun28.205004.1684@news.uiowa.edu> <20qg3m$44f@sousa.ako.dec.com> <1993Jun30.093255.1772@news.columbia.edu>
NNTP-Posting-Host: reed.edu
Keywords: PDP8, emulator


     Years ago I wrote a PDP-8 simulator in Pascal on a PDP-11 running RSTS/E.
I simulated an RF08 and had it running OS/8.  Speed was surprisingly good!
Maybe 10-20 times slower than the 8 itself.  I implemented the EAE set, partly
by using some in-line assembler code for speed.  Sadly, I don't think I have
the source around anymore.  The best part was the instruction decoding, which
was fast.
     Anyway, it can be done (of course), and on something with a bit of zip
should run noticably faster than an 8.

     Robert

--
----------------------------------------------------------------------
Robert Ankeney                 | "Yield and overcome.                |
...!tektronix!reed!bob         |  Bend and be straight.              |
...!tektronix!bob@reed.EDU     |  Empty and be full."    - Lao Tzu   |


From news.columbia.edu!sol.ctr.columbia.edu!math.ohio-state.edu!cs.utexas.edu!swrinde!network.ucsd.edu!munnari.oz.au!bruce.cs.monash.edu.au!monu6!vaxc.cc.monash.edu.au!decus!geremin Mon Jul  5 03:21:21 EDT 1993
Article: 316 of alt.sys.pdp8
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Newsgroups: decus.nop,decus.pdp11,vmsnet.pdp-11,alt.sys.pdp8,comp.org.decus
Subject: NOP and PDP-11 happenings down under, July-93.
Message-ID: <1993Jul4.145531.14610@decus.com.au>
From: geremin@decus.com.au
Date: 4 Jul 93 14:55:31 AEST
Organization: DECUS, South Pacific Chapter
Lines: 113

Hello Folks,
		Firstly, welcome to some new additions to my mailing  
list. This list is intended to supplement the distribution of the local 
DECUS.NOP and DECUS.PDP11 newsgroups for DECUS Australia.

		I have included some overseas names because of their 
interest in Nostalgic or Obsolete(!!) systems. (Or so I have assumed 
from their postings), and because I suspect that our local postings to 
vmsnet.pdp11 or alt.sys.pdp8 do not get world distribution.

		Main reason  for this note is to remind people that the 
DECUS Australia 1993 Symposium will be held in Adelaide 22-27 August.
We have been asked by the Digital Exhibition organiser to suggest a 
display of NOP items that would be of interest.

		My initial feeling is that something from 1968 or 1973 
would be appropriate (being 25 or 20 years ago). My listing of PDP-11 
release dates shows the 11/40 and 11/35 as being from 1973, only problem 
is that my 11/35 is largish and a bit awkward to transport to Adelaide, 
and I dont have any O/S that came with it - but could probably dig up a 
vintage RK05 drive with RSX on it. I believe over 25,000 PDP-11s were 
shipped by the end of 1973.

		The only major event I know of for 1968 was the release 
of TSS/8 for the PDP-8.

		Does anyone know of other events for either year which 
could make a good focal point for a NOP display.?
		--------------------------

		Progress with  PDP-11 workshop planned for Melbourne in 
October. I have sort of persuaded Ken Kirkby from plc Peripherals to be 
our principal speaker - possibly giving the main paper on the "QED 95 
Upgrade Modules for Unibus Systems" (making your 11/24 or /34 run TEN 
times faster). He is also heavily involved in process control system 
applications where PDP-11 systems are still very respected.

		We hope to have a registration form ready for 
distribution in Adelaide and will try to get some extra publicity with 
the Institute of Intrumentation and Control of Australia where Ken is 
also a member.
		Now is the time to let us know about any paper you wish 
to present or any topics you specifically want discussed in the Workshop 
sessions. This year we will be devoting extra time to hands-on testing 
and workshop groups. The main themes will be upgrading PDP-11s for the 
rest of the Nineties and PDP-11s Communicating with the world, as this 
seems to be the most requested topics for the DECUS gurus.

		--------------------------------

		Here is my current NOP mailing list - any suggested 
additions?


!		SMIFFY::USER:[GEREMIN]NOP_MAIL.LIST
!
!	I recommend you copy this to a local file (eg NOP.LIST), do 
!	a quick edit on the unwanted names, then MAIL to @NOP.LIST
burnet		! Museum MAX to his friends, speaks to DECtalk.
chevallier	! Mike from Ramparts, RT-11, TSX+.
cherkowski	! Jan - ex DEC, expert on configuring systems.
edmonds		! Peter with a PRO-350 and Pallette, in Perth.
faets		! Walter (not Werner) at the 'Digital Centre'.
gayford		! The original Trader Tom, now Pty Ltd. PRO expert.
geremin		! Big-John from Megatronics, 02 764 4855. RSTS +++.
goddard		! Noel, in wheelchair + rally licence, PDP-8s, 11/725.
hawkins		! Malcolm, from the Adelaide LUG.
hawley		! Dave from Tektronics. 
higgins		! Colleen with an interest in a VAXmate.
howard		! Andrew, ex-TSC, Software expert, + Harley man.
kerr		! Ed - currently a DECUSnews sub-editor.
kirkby		! Ken at plc Peripherals, Terrigal. Insustrial Control gear.
manson		! Cameron, Scottish with a DECmate, Rainbow and uV2000.
mckeon		! Peter in Melb. RSTS/E in Alfred Hosp.
orman		! Gary, RSX expert in Mackay, north Qld. PDP-11 SIG Chairman.
stewart_andy	! Andy (mad-DECaholic), Q-bus, desktop, networks, SECV.
taylort		! Board member, general good guy, uEDT, etc.
thorne		! Bill - chapter administrator - ex-Pioneer concrete.
warner		! Charles, ex-RSTS, SPC, Perth.
wilson		! Chester - of course - NOP SIG Chairman, RT11, TSX+, .MAC etc.
IN%"bruceb@psychvax.psych.su.oz.au"	! Bruce Beilby, Q-bus and Macintoshes.
IN%"r.caffin@syd.dwt.csiro.au"		! Roger, ex DECUSnews editor, ex-Board.
IN%"j.edwards@latrobe.edu.au"		! John ex-Chapter chairman.
IN%"dale@mpce.mq.edu.au"		! Dale Woodside, PDP-11 TSX+, Fortran.
IN%"forsyth@zodiac.dsto.gov.au"		! Graham, been around for a long time.
IN%"fulton@extro.ucc.su.oz.au"		! Roger,  GAMMA-11, RPA Hosp.
IN%"i.hunter@jcu.edu.au"		! Ian, on Leadership Development.
IN%"ccdfm@cc.newcastle.edu.au"		! David Morrison, ex-RSTS.
IN%"steveq@swifty.dap.csiro.au"		! Steve Quigg, PDP-8 guru.
IN%"adrian@internode.com.au"		! A.Corston, Internode Systems, Adel.
IN%"bennett@cis.dsto.gov.au"		! John, Head, I.T. Services Devel.
IN%"J.NEWMAN@icarus.curtin.edu.au"  	! John, DECsystem in Perth.
IN%"p.nankervis@latrobe.edu.au"		! Paul, Rainbow archive in Melb.
IN%"tovey@mundil.cs.mu.OZ.AU" 		! Matt Tovey, 11/34?. via Andy.
IN%"don@zl2tnm.gen.nz"			! Don Stokes. All sorts of things.
IN%"mbg@world.std.com"			! Megan Gentry - ex-RT11 devel team.
IN%"TERRY@spcvxa.spc.edu" 	! Terry Kennedy, St. Peter's College, NJ USA
IN%"wagner@avalon.physik.unizh.ch"	! Contact in Switzerland.
IN%"zcookbruc@cc.curtin.edu.au"		! Bruce Cook, RSX etc.
IN%"zrepachol@cc.curtin.edu.au"		! Paul (Reptile), DEC-10/20, RSX, etc.
!----------------------------------------

-- 

Regards,   John G.		(alias 'megaJOHN')
v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v
  John Geremin,  PDP-11 Support Consultant,  MEGATRONICS, Aust.
IN%"geremin@decus.com.au"     voice: 61-2- 764 4855  (9am-9pm)
-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-
Warning: 'PLENTIUM-32' fries your brain cells 4 times faster 
	than 'PLENTIUM-16' sayeth the PDP-11 mountain gurus.
	Naturally 'PLENTIUM-64' is 4 times worse again.   8-}



From news.columbia.edu!watsun.cc.columbia.edu!lasner Wed Jul  7 04:32:09 EDT 1993
Article: 317 of alt.sys.pdp8
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From: lasner@watsun.cc.columbia.edu (Charles Lasner)
Subject: Re: TRS-80 Model I Emulator for MS-DOS machines -- Now available!
Message-ID: <1993Jul7.081123.25831@news.columbia.edu>
Sender: usenet@news.columbia.edu (The Network News)
Nntp-Posting-Host: watsun.cc.columbia.edu
Reply-To: lasner@watsun.cc.columbia.edu (Charles Lasner)
Organization: Columbia University
References: <1993Jun30.164122.25791@mnemosyne.cs.du.edu> <1993Jul1.154302.6485@bilver.uucp> <1993Jul2.100448.69650@cc.usu.edu>
Date: Wed, 7 Jul 1993 08:11:23 GMT

In article <1993Jul2.100448.69650@cc.usu.edu> ivie@cc.usu.edu writes:
>In article <1993Jul1.154302.6485@bilver.uucp>, bill@bilver.uucp (Bill Vermillion) writes:
>> 
>> Not really.    In those days this was refered to as memory mapped video
>> - and several different computer systems used it.   You changed the
>> memory that the video was mapped onto and instant display change.
>> That fast video used in machine of this type was one reason I hated the
>> IBM PC when it first came out.  It was SLOW!!!
>
>Hate to break it to you, but the IBM PC has had memory mapped video from
>day one. I hate it because I can't hang my nifty terminals off it...

The PDP-8 has had memory-mapped video since the VT8E was introduced around
1973 or 1974.  Moreover, you could specify the mapping addresses dynamically to
any addressable main memory.  One of the first things I wrote for the beast
was a VT05 emulator because it's usually housed in a terminal box that
looks like one.

Also, by alternating between two DMA buffers on clock tick interrupts, it's
possibly to have two "shared" screens visually overlaying each other.  Either
of them can be text or graphics since the hardware supports text characters
with attributes or bitmapped graphics.

Output is standard video in monochrome.  It was done as a CSS project for a
newswire system that fed a cable-type network.  (I think the customer was
Reuter's.  In any case, DEC decided to package it inside a modified VT05
housing with a keyboard and video monitor.  The cards alone were known as
a VK8E.)

By specifying a display starting address on top of a running program and
using graphics mode, it is possible to get a fascinating view of a running
program.  You can actually see the various counters, etc. being updated at
rates that correspond to program activity if you study it a little, etc.

Because of the buss loading due to fast back-to-back DMA cycles, running
core memory diagnostics patched to run the VT8E in graphics mode over the
tested data areas can exacerbate a memory failure in a marginal core stack.
You can actually see the checkerboard patterns of a memory checkerboard
test!

cjl


From geremin@decus.com.au Tue Jul 27 13:35:58 EDT 1993
Article: 318 of alt.sys.pdp8
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Newsgroups: decus.nop,aus.general,comp.sys.dec,vmsnet.pdp-11,alt.sys.pdp8
Subject: DECUS NOP SIG meeting for July, in OZ.
Message-ID: <1993Jul26.221110.14619@decus.com.au>
From: geremin@decus.com.au
Date: 26 Jul 93 22:11:10 AEST
Organization: DECUS, South Pacific Chapter
Lines: 51
Xref: news.columbia.edu comp.sys.dec:15597 vmsnet.pdp-11:1274 alt.sys.pdp8:318

		AUSTRALIA			AUSTRALIA

	DECUS  NOP  DECUS  NOP  DECUS  NOP  DECUS  NOP  DECUS  NOP


	NOP SIG  *  July, 1993  Meeting  *  Lunch at  Neutral Bay.
	==========================================================

    Meet at 12 noon on FRIDAY 30th, in the Beergarden of the OAKS HOTEL, 
    in Military Road, Neutral Bay. SYDNEY.  (If wet meet in the Lounge).
    A good range of food outlets are available at reasonable prices.

	
	Primary business will be a discussion of the suggestions for a 
	NOP SIG Display at the coming Adelaide Symposium. So far we have 
	had an offer from John Bennett in Adelaide to lend us an 11/40,
	but its condition is not guaranteed. We should try to have a proper
	working system if we are going to the trouble of moving hardware.
	[How much space have we got to fill Max?]
	I have also been looking out for advertising materials and brochures
	from 1973 and 1983. What other products came out in 1973?

	Next item will be discussion on agenda items for the AGM to be
	held in Adelaide during the Symposium. Who will write the 
	report for the Sydney Activists. Mike Chevallier is in the process
	of making a perpetual trophy to be awarded to a deserving NOP
	SIG members from time to time. Nominations will be considered.

	General Business is likely to include: where to find DB44 connectors
	for an Emulex P-8000, networking of VAXmates, microVAX-3 for sale,
	transport to and from Adelaide, economical accomodation in Adelaide,
	cataloguing methods for paper-tapes, magtapes, dectapes, diagnostics
	manuals and other precious documents from Digital.
		______________________________________________

	RSVP:-  All network users are to reply via e-mail to me or
	IN%"manson@decus.com.au" so that we can book a big table.

	Tom Gayford and Cameron Manson for the local NOP activists,
	on behalf of  Chester WILSON, NOP SIG Chairman.
		      --------------------------------

-- 

Regards,   John G.		(alias 'megaJOHN')
v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v
  John Geremin,  PDP-11 Support Consultant,  MEGATRONICS, Aust.
IN%"geremin@decus.com.au"     voice: 61-2- 764 4855  (9am-9pm)
-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-^-
Help prevent brain cell deterioration - avoid using computers 
that contain excessive 'PLENTIUM-32' and 'PLENTIUM-64' - 8-}


