Memex on the 4A?

[Ed in SoDak]

I was re-reading an old Delphi WHT conference from October 25, 1992. One of the topics was the upcoming release of the Memex for the Geneve and the TI99/4A. I was interested back then but never did pop for one.

 

Doing a search here, it appears they are uncommon but several members have one or more. But all seem to be used on a Geneve. Did the 4A version ever make it into production? Are any still extant or maybe the board could be cloned?

 

I still have plenty of old Mac Simms that could perhaps be used in one of the 4A Memex cards. Same as beck then, curious and possibly still interested in finding one. I'm also still cheap and don't spend much on my old TI system.

[+jedimatt42]

Nothing I've seen on any real memex cards ( I used to have one for a Geneve ) used SIMMs... all DIP memory. 

 

The boards used lines for extra addressing that the flex cable card on a 4A hold HIGH, so... a 4A version would have to be radically different from the Geneve version.

[Ed in SoDak]

2 hours ago, jedimatt42 said:

Nothing I've seen on any real memex cards ( I used to have one for a Geneve ) used SIMMs... all DIP memory. 

 

The boards used lines for extra addressing that the flex cable card on a 4A hold HIGH, so... a 4A version would have to be radically different from the Geneve version.

Hmm, just going by the WHT Conference transcript. I excerpted the SIMMS info here (emphasis mine).

 

"...The 4a memex will sell for $175, and will
   include 1 MB of RAM built in.

<Ed> Mac type SIMMS?
 
<Don O'Neil> And will include Al Beards FULL C for the 4a, FORTRAN memory
   libraries, and maybe a few other surprises. Mac OR IBM type simms.

<Ed> SIMM size? /Sounds like a nice software "bundle"!
 
<Don O'Neil> The SIMMS can be from 256K to 4MB in size... the card will come
   with 4 256K simms installed, and for an aditiona l $20 we will install a
   single 1 MB SIMM (256K simms are MUCH cheaper than 1MB ones)

<Jeff> Also, unlike the AMS card, the 4A Memex will have a DSR with memory
   management built-in.

<Ed> Would you sell it unpopulated? (I have a bunch of 256k's left over from
   Mac upgrades)

<Don O'Neil> AND will support ANY RAMBO compatible program.

   Yes we could sell it un-populated, but for the same price. Origionally we
   were going to sell it for $175 for 0K, but because of the cheapness of 256K
   simms we decided to ship with 1MB of 256K simms. ..."

 

The Spoiler below copies all the Memex discussion. It was a fun conference!

 

 

Spoiler

Excerts about 4A Memex and 9640 Memex from:

 Western Horizon Technologies Conference #2  
        Delphi TINET October 25, 1992

   Attendees:

 DONEIL        Don O'Neil
 JHWHITE       Jeff
 TIRUGED
 TINET         Gary/OPA
 JERRYC
 9640NEWS      Beery
 JCARVER       John
 CAL47
 BRADSNYDER    Brad S
 BDOORNBOS
 VONRICKY
 LMCCLURE
 MARKANDERMAN
 RMARKUS
 EGERKEN       Ed
 ILLUSIONIST   Mike
 JPLESLIE

...

<Jeff> ...
   Well, does anyone have questions about 4A Memex?
 
VONRICKY> Jeff, do you feel that you are near completion on the DSR? Most
   problems solved, good feeling about the rest, etc.?

<Jeff> No.  I am not near completion. Not as I define near.

VONRICKY> Is Memex shipping?
 
<Jeff> No.
<Don O'Neil> I do not expect memex to ship until after the 1st.
<Jeff> Unlike Asgard, for better or worse, WHT announced products still under
   development at the time.

VONRICKY> Anyone writing software for it?

<Don O'Neil> Yes, Al Beard, Mike Maksimik.  

VONRICKY> Whats Mike writing for it?
 
<Don O'Neil> Midi Master 3.0

VONRICKY> Great!!
 
<Don O'Neil> Of course, Digi-Port will work with the 4a memex.

<Jeff> Any RAMBO program will.
 
VONRICKY> I've got MM 2.3, but can't do much with it til he finishes the
   sequencer. Any idea when he'll finish that part?

<Don O'Neil> No.
 
<Jeff> I'll try to get Mike to agree to a conference. I'll see him Friday.

VONRICKY> Don, what products are you shipping now?
 
<Don O'Neil> Digi-Port. I only have 4 announced products, they are..

   Digi-Port, Geneve PAL, SCSI and 4a Memex.

   We have others in the works but we are going to wait until we ship to talk
   about those. Geneve PAL will ship in 1 week at Chicago. Of course I still
   offer all sorts of replacement PAL and EPROM part s as well as repair
   services. I also do custom work for projects and can sell you just about
   any chip or IC for your systems.

.....

<Don O'Neil> WHT has only 2 products that have been longer than a year in
   develo pment, the Accelerator (which has been canceled) and the 4a Memex
   which ran into product dis-continuation from TI. We've got an OK
   reputation, but I'd like to change that, so we've changed our policies
   about announcements, and you will NOT see any more "unfinished" product
   announcements.

....

<Ed> I assume I missed discussion of the 4a Memex (price, size, ect.).

<Don O'Neil> I anticipate (on my end) about 3 weeks after the Chicago faire
   having production units of the 4a memex being made, and soon after DSR
   will go into development, as well as other Software to support the card. We
   never really talked about it. The 4a memex will sell for $175, and will
   include 1 MB of RAM built in.

<Ed> Mac type SIMMS?
 
<Don O'Neil> And will include Al Beards FULL C for the 4a, FORTRAN memory
   libraries, and maybe a few other surprises. Mac OR IBM type simms.

<Ed> SIMM size? /Sounds like a nice software "bundle"!
 
<Don O'Neil> The SIMMS can be from 256K to 4MB in size... the card will come
   with 4 256K simms installed, and for an aditiona l $20 we will install a
   single 1 MB SIMM (256K simms are MUCH cheaper than 1MB o nes)

<Jeff> Also, unlike the AMS card, the 4A Memex will have a DSR with memory
   management built-in.

<Ed> Would you sell it unpopulated? (I have a bunch of 256k's left over from
   Mac upgrades)

<Don O'Neil> AND will support ANY RAMBO compatible program.

   Yes we could sell it un-populated, but for the same price. Origonally we
   were going to sell it for $175 for 0K, but because of the cheapness of 256K
   simms we decided to ship with 1MB of 256K simms.

<Ed> I'm just cheap! Or is that German? /Yes, used 256k's sell for a quarter
   locally!

<Don O'Neil> We could possibly arrange a "discount" for trade in of your
   256K's. A quarter?

<Ed> I'll check on that. Yes, at the local Computerland, in a bucket, no less!
 
<Don O'Neil> WOW, I'd BUY A BUNCH for that price, that's ALOT less than I'm
   paying.

<Jeff> SIMM's for a quarter?
 
<Ed> Ok, you drive a hard bargain. 50 cents! That's what the service guy told
   me just a few weeks ago. I have 6 (at least) sitting around now. He has
   how many, I don't know, but said "in a bucket".

<Don O'Neil> I'd like to talk to this guy!
 
<Ed> I'll check into it. Seemed like a waste to me.
 
<Don O'Neil> REally, it would make ALOT of TI users happy, instead of the
   waste basket. How fast/slow are they?

<Ed> He said they only sell them for repair of older Macs that users don't
   want to upgrade to meggers. Standard (?) Mac stuff from SE's.

<Don O'Neil> Hmmmm, I don't know whaty that would be. But we need at least
   150ns ones.  

<Jeff> Fast enough for the 68000, fast enough for the 9900/9995.
   We're really going long tonight.
 
<Ed> I think they are 150ns, but I'd better check on the reality of all this
   first.

<Don O'Neil> Ok, great, just leave me some email.
 
<Jeff> Maybe "quarter" means $25 each.
 
<Ed> Roger willco. How many to earn me a free memory card? heheee!
   No 25 CENTS. 50 cents tops.
 
<Don O'Neil> I don't know about that. But we can discuss it.
 
<Jeff> Wonder if 25cents each would drop the price of the 4A Memex.
 
<Ed> All the Macs are going to larger SIMMS. Older ones "near worthless"
   according to guy at computerland. Doubt he has enough to make a dent in
   the supply needs for Don.

<Jeff> Yep, with System 7, Mac's need lots of RAM.
 
<Ed> We have 8meg, 5 meg and 6 meg in our three SE's.
 
<Jeff> Should we close.
 
<Don O'Neil> Sure , unless there are any other questions?
 
<Ed> Sorry to "dominate" the ending here...
 
<Jeff> Don't worry about it.
 
<Ed> I'm not up to snuff on RAMBO. Does it allow the writing of larger EXB
   programs?

<Don O'Neil> No,
   But there are plans by somebody to expand his XB to use 4a Memex.
   There are certain utilities that can use RAMBO from XB...
   The Digi-Port XB links for example uses RAMBO memory for playing from.
   There are Assembly programs that use RAMBO, but not much more than that.
   ga.  

<Ed> You mentioned that Memex would run RAMBO programs. That's what got me
   wondering.

<Jeff> Well, if XB can directly use RAMBO, it can directly use 4A Memex in the
   same fashion. The XB interpreter is in the ROM located at the cartridge
   space RAMBO use s to page memory.

...

<Ed> What is the principal advantage of the 4a Memex? Is it mainly a huge
   RAmdisk? Does it have the 32k installed, or must you keep that card in as
   well?

<Don O'Neil> It REPLACES all 32K cards and gives you many other features...
   Like ANY size page of memory from 8K to 64K ANYWHERE in the Memory Map...
   Temporary RAM disk functions (like on the geneve)..
   Print spooler memory..
   NEW C and FORTRAN languages for developing up to 64MB Programs...
   FULL RAMBO Emulation for running RAMBO programs..

   and of course COST. It is PRIMARILY intended for PROGRAM and DATA RAM.
   But THE MOST FLEXABLE RAM CARD EVER AVAILABLE FOR THE TI.

<Ed> But not expanded EXb programs at present? Wish, hope!
 
<Don O'Neil> Cost wise it is CHEAPER than any other NEW memory card on the
   market.  [RE XB:] There is somebody who is going to do that, But I am not
   at liberty to speak about him/it.

<Ed> Asgard's new card will also need an EXb rewrite to use that space for XB
   programs, right?  

<Don O'Neil> It will NOT come with the new XB though. Yes Asgards card also
   needs a re-write. Asgards card costs you 96 cents per K, then 4a Memex,
   only 17 cents (right out of the box) and it get's cheaper as you expand it,
   down to 4 cents per K at 16 MB. Asgards card is FIXED to 128k and they say
   they will have a similar card to the 4a memex sometime in the future, but
   IT WILL NOT be compatible, and that is Chris's decision not mine. I wanted
   him to join the NCTIS group with his card, but so far he has refused.

      EDITOR's NOTE: The ASGARD MEMORY SYSTEM (AMS) is a memory system
      designed prior(?) to the 4a/MEMEX or the recently formed NCTIS.  It
      is a 128k non-DSR card (like the TI 32k) with a 16 meg card in the
      works.  One objective of NCTIS (National Committee on TI Standards)
      is to develop a universal DSR for memory hardware that uses a DSR.
      For additional discussion of standardization issues, different
      different support strategies, and design differences, read the AMS
      Conference Transcript in the NEW library here on TINET.

<Jeff> Chris has said recently that the 128K card will be upgradable to 512K.
 
<Ed> Well, didn't Chris start his memory card long ago?
 
<Don O'Neil> He started his after I started mine.

<Gary/OPA> AEMS [aka AMS] card is not fixed at 128K, but expnadable up to 512K.
 
<Ed> Thought he said 3 years ago. (original developer)

<Gary/OPA> AEMS is a very old project. Prototype been around for a year now.
 
<Ed> What's the limit in K for the Memex?
 
<Don O'Neil> 16 MB.
 
<Gary/OPA> The DRAM version of AEMS, will be software compatible to the 128K
   version.

<Jeff> 4A Memex is no "spring chicken" either.
 
<Don O'Neil> The AMS in it's current state was not around when I first started
   4a Memex, nearly 3 years ago. the Current AMS has only been around for a
   year.

<Jeff> Gary, are you involved in AMS (AEMS) development?
 
<Gary/OPA> I could dig up old papers with a '1612 design dating back to almost
   10 years ago.

<Don O'Neil> BUT, you are not the origonal designer for the AMS. What
   difference does it make. the NCTIS standard is not anybodies particular
   card, but a software interface to ALL cards.  Except for the AMS (Chris's
   decision) [and other non-DSR devices -ED].

<Gary/OPA> My only involvment with AMS is in the building of the hardware, and
   in software writing of third-party software.  

<Jeff> Sure.  The TI 128K card supposedly used the 99612 I think.
   Or the 99/8 memory card.
<Don O'Neil> Yep.

   [Rumor has it that the TI 128k design influenced the AMS approach -ED]

<Gary/OPA> The 99/8 used the 99610, and TI made a flex card cable that used
   the 74612.

<Jeff> Basically the same MMU.
 
<Gary/OPA> THe TI 128K/384K/512k cards didn't but they did have the same bank
   system using logic chips.

<Jeff> Just because a design is old does not make it vintage.
 
<Don O'Neil> Very true.
 
<Jeff> But Gary wins either way, I guess.
   His RAMBO software will work with 4A Memex.
 
<Ed> Well, NCTIS aside, I'd put heavy points towards a card that allowed
   larger EXB programs.

<Jeff> And [Gary's] AMS software will work with the AMS.
 
<Don O'Neil> and probably RAMBO (if i was him)
   More possible sales.

   There will only be 10 AMS cards at Chicago, but there are 2800 horizons
   capable of being upgraded to RAMBO for only $40.

<Jeff> And if NCTIS had its way, I suppose, all software would be able to use
   any memory cards.

<Don O'Neil> and ALL [Horizon] 4000's come with RAMBO built in.
   [to Jeff] That's the goal of NCTIS
 
<Gary/OPA> There maybe only 10 cards at Chicago, but lots more in stock,
   waiting to be shipped. Also less than 150 RAMBO's have been sold so far,
   not much of a market there either.

<Don O'Neil> BUT tell me this, from a $$ point of view, wouldn't yuou rather
   spend $40 instead of $120 to get more program space? and if RAMBO was half
   that price you'd have 1000+ cards probably.

<Jeff> Get out the flame-throwers.  We're cooking tonight.
 
<Don O'Neil> ESPECIALLY of there was some good software that supported it.
 
<Gary/OPA> The 128K AMS is mainly marketed towards those programmers out
   there, who wish to get software rolling before the DRAM version is
   released.

<Don O'Neil> So, it's still going to be more than $40 for the DRAM version
   right ?

<Gary/OPA> Bud can sell the RAMBO for less if he pleases, my price is still
   $45 US.

<Don O'Neil> But why? I think the decrease in RAMBO cost would be made up by
   the increase in software sales that supported it. (why your price)_

<Jeff> What's the price of the new 4000 series?
 
<Gary/OPA> You can discuss Bud's price with him if you like, he makes it, he
   can sell it for what he wants to.

<Don O'Neil> Hold on, just a sec....  [Horizon?] 128K is $155.

<Ed> Rambo Mod is $45 in Sept. Micropendium.
 
<Jeff> RAMBO is on the 4000 board, Ed.
 
<Don O'Neil> [Horizon?] 512 is $245
 
<Ed> [referring to RAMBO mod] Assuming you already own a Horizon (sigh)
 
<Don O'Neil> Yes, assuming you already own one.
   I thought the price was $40, my mistake.
   A [Horizon] 4000 with 128K is only $155 and can go to 8MB.
 
<Ed> Couldn't find 4000 info in Sept. issue.
 
<Jeff> 4000 is just becoming available.
<Don O'Neil> 4000 info isn't in sept issue, it's in new oct issue.
<Jeff> Will appear at Chicago.
<Don O'Neil> Shipments just started today. It has RAMBO and 32K built in.
   It's a better deal than the 3000.

<Ed> What's the diff between the 4000 and Memex? Geneve vs. TI99?
 
<Don O'Neil> Price and flexability.

<Ed> Either runs on a 4a?
 
<Don O'Neil> A 2MB 4000 will cost $595, a 2 MB 4a Memex, only $215. BIG
   difference. 4000 only allows banks of 8k at >6000 space [plus ramdisk use],
   4a memex 8-64K anywhere in the map. Both run on 4a or Geneve.

<Ed> The similar naming confused me, I guess. 4aMemex and Memex for the 9640.
 
<Don O'Neil> AMS only run on TI.
 
<Jeff> 4A Memex supports up to 64 Meg with 4 full cards.
 
<Don O'Neil> 4a Memex is different than the MEMEX card. The 4a Memex is
   intended for primary use on the 4a, but can be used on the geneve.

<Ed> different=competing?
 
<Don O'Neil> The MEMEX ONLY runs on the Geneve.
 
<Ed> OK. got it! (finally!)
 
<Don O'Neil> Actually, MEMEX is planned to be discontinued. Only 10 cards
   remain. The 4a Memex will most likely replace it if we can get full MDOS
   support (which is pretty likely)

<Ed> As well it should, considering price alone. Not to mention [lack of] 4a
   compatibility.

<Don O'Neil> Bud will be "closing out" the 512 K memex's at chicago for around
   $200. (That's his plan at least)

<Jeff> The MEMEX had a very limited market. The 4A Memex/AMS market is not
   unlimited. However, if Don Walden gets rights to sell Geneve kits, and MDOS
   ripens rather than rots on the vine, the 4A Memex may be the memory
   solution.

<Ed> Appreciate the info. (Thanks for the memories! ;> )
   Too bad "Illusionist" is probably going to IBM with his work plans.
   That was a market in itself, almost!
   (But, he still wants to port that "Z" language to the TI)
 
<Jeff> Well, when 4A Memex is ready, it will have a K&R C compiler.
 
<Don O'Neil> That should be neat. (both C & Z)

<Ed> I'm mixing up the thread a bit, but Illusionist, with his 210 TI's interest
ed me a lot. He was interested in a full C complier.
 
<Jeff> That was a ? Illusionist had about the the TI.
<Don O'Neil> Yes.
 
<Ed> I tried to "keep him in the fold"
 
<Jeff> And TIC, a full C compiler, can be used to write programs for the TI.
<Don O'Neil> Yep.
 
<Jeff> But it only runs on a Geneve, Amiga, or clone.
 
<Don O'Neil> Yep. But eventually the 4a.

<Jeff> And must use c99 libraries to work in GPL on TI or Geneve.
<Don O'Neil> Yep.
 
<Jeff> Right.  4A Memex makes it happen.
<Don O'Neil> Yep.
   :0
  

<Jeff> I'm not showing much moderation tonight.
 
<Ed> Pity the poor soul who must make the database entry on this!
 
<Don O'Neil> This is pretty amazin, 7 left at 2am.
 
<Jeff> Jerry normally handles it as of late.
 
<Ed> I think it happens everytime I show up!
 
<Gary/OPA> 3am  for some
 
<Ed> midnite here.
 
<Jeff> And Jerry does a FINE job of editing it.
 
<Ed> YES WONDERFUL! ;>
   I dl them all!
 
<Don O'Neil> Only 11 here.
 Shall we wrap up?
 
<Ed> Any other "projects" not touched on?
 
<Don O'Neil> Nope.
 
<Gary/OPA> Wrap it up? This early?
 
<Don O'Neil>
 
<Ed> Yeah, only 11, Don! ;>
 
<Jeff> If we are going to get to after-conference part, I think we should.
 
<Ed> I thought that's where we were now!
 
<Don O'Neil> Nope, transcript still going.
 
<Jeff> I never officially closed the conference.
 
<Ed> Do so, I'll stick around a bit, if anyone else does.

...

** ILLUSIONIST just joined "Western Horizon Technologies Conference" (8 members
  now) **

<Jeff> Now this is interesting!
 
<Jeff> Hi, Illusionist.

<Mike> [Illusionist] hello guys, just thought I would pop in for a while
 
<Ed> Oh, oh, he heard us! ..Your name was "dropped", shall I say?

<Jeff> Stay here long enough, and even the Boone-man will show up.
 
...

VONRICKY> Midi-Mike?
 
<Jeff> Mike Maksimik is not here, else I'd corral him, too.
 
<Ed> This Mike is new to us here, I think, yes?
 
<Mike> yup..I dont even have a TI, yet.
 
<Ed> But an interesting kinda guy, I think!
 
<Jeff> Mike is contracted to port his Z language to the 99/4A.
 
VONRICKY> Neato!
 
<Mike> :), what is the approximate user base for the TI?? 100-200 user range??
 
<Don O'Neil> And if he does it will most likely doing it on a 4a Memex.
 
<Jeff> He's got 20 P-boxes waiting for 4A Memex's [you wish! - ED], and many
   other basic console systems.

<Don O'Neil> User base? With just a TI? In the millions.
 
<Ed> Don! Your're so... blatant!
 
<Don O'Neil> With the 4a Memex, none yet, but that will change Thank you Ed.
 
<Ed> MICROpendium has a subscriber base of 3500 or so.
 
<Don O'Neil> There were some 200 thousand P-Boxes sold in the US, who know how
   many elsewhere.

<Mike> :), yeah, but I mean active users, with pebs, amd some sorta ram
   upgrade, and at least 1 drive

VONRICKY> We got 200 just in one of my 2 user groups.
 
<Ed> That is a TI specific magazine.
 
<Jeff> Does Mike even know about WHT products?
 
<Don O'Neil> Germany is a BIG market.
   Yes he does.
   I'd have to say at this point, you're looking at 1-200 in a year with
   4a Memexes.

<Mike> ok, good, I want to get the language out to as many possible users as
   possible..

<Don O'Neil> As per your requirements, it's the only card that will work for
   your project, unfortuneatly.

<Ed> The TI market may be small, but it is loyal.
 
<Jeff> There were 2200 or so Geneves sold, and many of them are still used.
 
<Don O'Neil> We've allready had interest from germany and Australia for the 4a
   Memex....

...

<Mike> I am going to TRY and modulate the language, hopefully I will be able
   to get the system to run on a 512k ram disk.. and just call the appropriate
   modules off of the ram disk

<Don O'Neil> YES! If you write in K&R it will run on BOTH systems!
 
<Ed> Mike did you check out the classified for used TI's yet?
 
<Mike> no, not yet, U am going to try to buy one off of the lab manager, if
   not I will buy through the classifieds..

<Don O'Neil> If you can modularize it to 8K blocks then it will run on the
   LARGEST possible installed base, the HRD. 2800 some cards in use today.
   -- plus any other RAM disk out ther e(CorComp,, Myarc, and soon 4a Memex)

<Jeff> BUT only 150 [HRDs] with RAMBO. Without RAMBO, you'd have to use 2K
   chunks.  
 
<Don O'Neil> I'm assuming he's going to do it in standard 32k and page in 8k
   segments at a time.

<Ed> Something like Mike's plans might enduce more to upgrade to Rambo...
 
<Don O'Neil> Or maybe use RAMBO which would definately boost RAMBO sales.
 
<Jeff> Gary and I will tell you that 2K is not a fun block size to program with.
 
<Mike> I will probably be able to sqeeze it down to 16k blocks..
 
<Don O'Neil> 16k PC blocks?
 
<Mike> thats about as small as I can do though..
 
<Don O'Neil> Are you speaking in PC (80x86) code? Or even 680x0 code?

<Mike> the entire language, (with run-time executive) is about 400k 68030 code

<Don O'Neil> You'll be in for a BIG surprise then, the 9900 is one of the MOST
   efficient processors out there.

<Jeff> Without all the pushing and popping unnecessary with the 9900, its code
   is normally quite small.

<Don O'Neil> If that's the case I think you can squeese to 8k segments.
   Especially since the 4a is only a 16 bit machine. 

 VERY

			   small, it's amazing what you can do in 32k.  
		

		

<Mike> well, the I am gonna do it in K&R C, so hopefully the compiler can
   produce compact enough code.  
<Jeff> Al Beard's TIC compilers and X-compilers attest to the memory
   efficiency of 9900 code.

<Don O'Neil> How about a full featured text editor in less than 8k?
 
<Ed> Wait'll you do some other things with the TI, than just the dedicated
   processes you do now, Mike.

<Jeff> TIC is a K&R C for the Geneve and 99/4A that runs on clones, Amiga, or
   Geneve.
   The compilers are writen mostly in C themselves.
   From a basic kernel.
 
<Don O'Neil> Then you will almost have to do it on the 4a Memex, since it will
   be the only memory card with K&R that uses it.

<Mike> yeah..

....

[End of Memex-specific discussion. Conference continues on the proposed "Z" language and other topics]

 

 

 

Two years ago, I posted the entire CO transcript here:

 

Edited February 13, 2022 by Ed in SoDak

[Ed in SoDak]

Too bad, looks like it never made it far beyond a few mentions. By late '96 it had morphed into the 4A Memex Jr., to come after the WHT SCSI DSR was finished. The DSR was still somewhat of a work-in-progress into 1997 and beyond and I never saw another mention of either Memex for the 9640 or the 4A.