> Date: Tue, 30 Jan 2001 19:01:26 -0000
> From: "Gareth Knight" <gareth.knight(a)btinternet.com>
> Subject: Re: Spectrums, Ultrix, feeling old :)
>
> You can tell the difference by the colour of the machine. The
> +2A was grey, while the +2B was black.
Nope, the +2 (vanilla) was grey and both the +2A and +2B are black. There
were 3 models, all increasing in bug-ness. I was going to say check the
Sinclair page in the Museum but I've just noticed the +2B isn't
there.....hmm....
--
Adrian Graham MCSE/ASE/MCP
C CAT Limited
Gubbins: http://www.ccat.co.uk (work)
<http://www.snakebiteandblack.co.uk> (home)
<http://www.binarydinosaurs.co.uk> (The Online Computer Museum)
0/0
One of scrappers has got in a Nova 3 that he is interested in selling. it
appears to be a 12 slot card cage with the following cards.
Nova 3 CPU D4864
Nova 3 Triple option 8534
2 16K SCMEM 1638 & 0659
DGC nova Cassette I/O 4F-0334
DGC Nova Compatable wiring board 005-000-449-04
Disk Cartridge Control 4134
another DGC Nova Cassette I/o 5075
There is also a DG removable pack disk drive 4234
I have not seen it yet but I think it is missing the plastic front covers.
If anyone is interested please contact me off list and I will try to find
more about it.
I suspect it is heavy but I have considerable experience in shipping this
type of hardware. It has been about 9 years since I have seen a Nova 3.
Paxton
Portland, OR
Yeah, I'd be interested in it, especially for the cassette controller board,
I have a friend who is trying to repair his cassette control board.
Will J
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
I also found two Micropolis 1203-I disk drives in the loft.
They are 8-inch hard disks, +24V, -12V and +5V power
requirements and connected to an ICL "formatter" dated
1989. The formatter has various chips from the 8X300
bit-slice system all over it.
They're in Bristol, UK, if anyone wants them.
--
John Honniball
Email: John.Honniball(a)uwe.ac.uk
University of the West of England
I finally dug out the VAX PSU that's been in my loft for a
while. It's a 5Volt, 100Amp power supply dated 21st Feb
1980. Model H7100B, with 240V 6A 50/60Hz input. No idea
what model VAX it's for, but it was most likely a big 'un.
The PSU is in Bristol, UK. It's very heavy, and 240V, so
it's probably only useful to someone in this country.
Anybody want it?
--
John Honniball
Email: John.Honniball(a)uwe.ac.uk
University of the West of England
On January 31, Ross Archer wrote:
> Am I the only one who thinks mechanical design cost-cutting has
> finally gone too far? I almost forgot that stuff was once
> this well put-together.
I'm with you there. Fairly recently I was moving stuff around in
the basement; I stood on a PC chassis to reach over some stuff. It
was a recent chassis, maybe a year old.
It collapsed under my weight. The "sheet metal" was like foil. Now,
I'm not a small guy, but I'm not hugely fat either.
-Dave McGuire
I always thought the TMS9900 was a neat chip (having a PDP-10
background may have influenced me :-) Having the register set
show up in memory gave me a nice warm nostalgic feeling. I
wouldn't blame the poor performance of the 99/4A on the CPU. The
architecture had a lot of nifty things in it. Most of the blame
for the poor performance of the 99/4A falls on the low-end
save-every-penny-you-can design criteria for the machine. I
ordered the technical manual on the 99/4A from TI... What
I saw in the manual made me gag... aside from a very small amount
of memory actually on the system bus, any add-on RAM was
accessed _serially_ (i.e. 1 bit at a time) via what TI called
a "CRU" interface (basically a high speed serial port) I
believe we can all appreciate the crippling effect on any
machine's performance when the bulk of it's memory is only
available through a 1-bit serial interface.
BTW, I also had the technico board... a really neat product that
never quite took off. :-(
> -----Original Message-----
> From: ajp166 [mailto:ajp166@bellatlantic.net]
> Sent: Tuesday, January 30, 2001 8:30 AM
> To: classiccmp(a)classiccmp.org
> Subject: Re: TI-99/4A
>
>
> From: Ross Archer <archer(a)topnow.com>
> >
> >Correct me if I'm wrong, but I've heard the 99/4A suffered
> something of
> >an unfair rap for being slow due to the fact that its TI BASIC was
> >dreadfully inefficient and sloppy, and that little or no
> blame for its
> >slowness rested on the actual CPU or hardware. (Windoze
> >users may spot a parallel here.) >;)
>
> Partially correct. there were many issues. One the 9900 is
> 16bit wide
> data bus demuxed to 8bit (costs a lot of cycles!, penalty 1),
> it's run at
> less than maximum speed for the time and BASIC {internal} was
> interpreted as an end language {penalty 2} and the BASIC interpreter
> was interpreted {penalty 3}.
>
> Those things really hurt speed. The other side was it did have one of
> the better from a capability standpoint Basics in the
> standard console.
>
> >The TMS 9900 CPU actually used a "window" in RAM as its
> register space,
> >with an internal pointer register to locate its base
> address. This was
> >actually a great idea at the time, because CPU cycles were
> long enough
> >back then it made no difference whether you stored temporary
> values in
> >internal registers or external RAM, as either could get you
> your data in
> >the 1 cycle time available.
>
>
> Actually many of the older DEC hardware also used part fo ram to
> implement the registers including early PDP11, DEC-10s and previous
> machines. The idea was not new and was to save logic in the CPU
> as FlipFlops (memory) were costly in hardware back then and even in
> late 70s were costly on silicon. The other factor is the 9900 was
> a single chip recreation of the TI990 mini (not unlike like the
> 6100{pdp-8}, LSI-11 and DG MicroNova).
>
> >(And interrupt latency can be really short if you can make a "fresh"
> >register bank with one register load!)
>
> The ability to context switch fast was one of the strong points.
> Compared
> to Z80 or 8086 it was a nicer cpu to program save for the 32KW memory
> limitation. In many respects it was more similar to the minis like
> PDP-11
> or Nova than the micros of the time. It was rich in general
> registers,
> Addressing modes and IO.
>
> I have a Technico Super starter board and it runs the TI9900 at 4mhz
> with 16bit wide memeory and rom really fast compared to the Z80
> (comparison made on both machines I still have from 1979!).
> I picked up
> the TI99/4a and was sadly disappointed save for the bundle of
> really good and inexpensive software for it. Still, it plays
> a mean game
> of
> Parsec!!!
>
> Allison
>
Manual transfer of data was the only way to go in the "old days".
There was bike-net also. I used to take my 800 bpi tapes over to the
computer room and knock on the back door, they would sneak them in. The
official way was they logged in tapes twice a day, slow turn around. There
was a slight risk of bike accident especially if I was not looking, perhaps
distracted by scenery :)
The risk with Beetle-Net was that if you left the top down some wacko would
walk off with your tape. One of my fellow students came back to his car to
find the tape unspooled down the hill, somebody stood on one end and rolled
the reel down the hill. We tried manually re-rolling the tape and decided
there was to much dirt and grime on it.
Later in the 80's I held the local record for awhile, I carried 10 LMSI 12"
2GB optical disks from one end of the hospital to the other, they had
planned on doing a network transfer via ftp. The sneaker was faster.
20GB/10 minutes = 2 GB/minute in 1985.
Mike
mmcfadden(a)cmh.edu
> What kind of stuff do you run on it if not any of the TI stuff?
>
> Jeff
The stuff I have for the technico mostly. Save for I have a complete
99/4a
so I can run edtasm.
Allison
From: Ross Archer <archer(a)topnow.com>
>
>Correct me if I'm wrong, but I've heard the 99/4A suffered something of
>an unfair rap for being slow due to the fact that its TI BASIC was
>dreadfully inefficient and sloppy, and that little or no blame for its
>slowness rested on the actual CPU or hardware. (Windoze
>users may spot a parallel here.) >;)
Partially correct. there were many issues. One the 9900 is 16bit wide
data bus demuxed to 8bit (costs a lot of cycles!, penalty 1), it's run at
less than maximum speed for the time and BASIC {internal} was
interpreted as an end language {penalty 2} and the BASIC interpreter
was interpreted {penalty 3}.
Those things really hurt speed. The other side was it did have one of
the better from a capability standpoint Basics in the standard console.
>The TMS 9900 CPU actually used a "window" in RAM as its register space,
>with an internal pointer register to locate its base address. This was
>actually a great idea at the time, because CPU cycles were long enough
>back then it made no difference whether you stored temporary values in
>internal registers or external RAM, as either could get you your data in
>the 1 cycle time available.
Actually many of the older DEC hardware also used part fo ram to
implement the registers including early PDP11, DEC-10s and previous
machines. The idea was not new and was to save logic in the CPU
as FlipFlops (memory) were costly in hardware back then and even in
late 70s were costly on silicon. The other factor is the 9900 was
a single chip recreation of the TI990 mini (not unlike like the
6100{pdp-8}, LSI-11 and DG MicroNova).
>(And interrupt latency can be really short if you can make a "fresh"
>register bank with one register load!)
The ability to context switch fast was one of the strong points.
Compared
to Z80 or 8086 it was a nicer cpu to program save for the 32KW memory
limitation. In many respects it was more similar to the minis like
PDP-11
or Nova than the micros of the time. It was rich in general registers,
Addressing modes and IO.
I have a Technico Super starter board and it runs the TI9900 at 4mhz
with 16bit wide memeory and rom really fast compared to the Z80
(comparison made on both machines I still have from 1979!). I picked up
the TI99/4a and was sadly disappointed save for the bundle of
really good and inexpensive software for it. Still, it plays a mean game
of
Parsec!!!
Allison
From: Corda Albert J DLVA <CordaAJ(a)nswc.navy.mil>
>I saw in the manual made me gag... aside from a very small amount
>of memory actually on the system bus, any add-on RAM was
>accessed _serially_ (i.e. 1 bit at a time) via what TI called
>a "CRU" interface (basically a high speed serial port) I
>believe we can all appreciate the crippling effect on any
>machine's performance when the bulk of it's memory is only
>available through a 1-bit serial interface.
???? I still have 4 of them. HAving hacked one rather severely the CRU
interface was IO only. Ram was either accessed as:
128 words on the 16bit bus (pair of 6810s) this was fast ram
relative to all other.
32KW in the Expansion box, this was slower due to the word to byte
wide conversion logic (adds at least 2 waits for every access!)
Grom, byte parallel, sequential access, you wrote to a register
in the GROM to set the starting address and every byte read
would increment an internal counter. This was slow at times
being both on the byte wide bus and the higher software
maintenance. Mostly used for internal Basic and the plug in
carts.
Vram.... 16k or 4116 Dram on the video refresh bus. This was also
used as general storage for the internal BASIC and was a byte wide
access via the 9918 VTAC and also CRU IO (setting a pointer).
Horribly slow, cool graphics for the time!
I have a severely hacked one with 32KW of 61256(32kx8) and 32KW
of Eprom both 16bits wide and clocked to 4mhz... it screams. Nothing
standard and doesnt run any of the TI stuff. Nice package though.
The CRU interface for IO was actually pretty fast in practice and had
flexibility that was not available on most of the 8bitters.
>BTW, I also had the technico board... a really neat product that
>never quite took off. :-(
IT's interesting that it was one of the first 16bit cpus and was not
well supported by TI at that time. Good programmers CPU.
Allison
Hey folks, who's got one of the above subject machines? I found one over
at the Salvation Army store.
Looks very clean and complete: has the Operator's manual in a slipcase,
MSDOS manual (DOS v.2.1), keyboard, printer, vinyl slipcover, cables, some
floppies of s/w. They want $50 for it which is probably a little high.
Maybe I can negotiate it down to something better.
Found several hits on a NorthernLight search. One good photo to help show
what I'm talking about is at:
http://home.plex.nl/~hwrsoft/11.htm
Some list members' collections show as hits too, but no descriptive info
was to be found in those links.
Anybody have any comments about this machine? How was the screen clarity?
Regards, Chris
-- --
Christian Fandt, Electronic/Electrical Historian
Jamestown, NY USA cfandt(a)netsync.net
Member of Antique Wireless Association
URL: http://www.antiquewireless.org/
>Date: Sun, 28 Jan 2001 20:46:43 -0500
>From: Jeff Hellige <jhellige(a)earthlink.net>
>Subject: NeXT question
>
> Ok...I'm having a bit of trouble networking my NeXT with
>other machines, specifically my Mac-clone....
>Unfortunately, I can't get the NeXT and Mac to talk
>to each other over the 10base-T ethernet link, using a twisted patch
>cable so I don't have to have a hub installed. ...
>I'm also using a CD
>called 'NeXTstep Objectware, Summer 1995', which is full of 3rd party
>product demos, internet tools and drivers, which is where Omniweb
>came from. Does anyone have any ideas?
Jeff,
I've got a very similar setup. NeXT '040 cube, NS3.3 w/Y2k patches,
crossover ethernet cable to a Mac Powerbook 3400 running MacOS 8.1. The
NeXT will respond the Mac *if* the Mac is already connected and running
when the NeXT boots. Of course the Mac has to be set up for TCP/IP to the
ethernet port, etc. I usually hit the NeXT with Fetch 3.0.3 from the Mac
first, but I have also succeeded by firing up CAPer on the NeXT first then
looking in Chooser..Appleshare on the Mac.
The NeXT setup is the same as it was in my office, on an ethernet
internet hookup, so it's possible there are some settings in there not the
same as yours. For example, during the NeXT boot process, I get some
message about "not being able to find a server ... hit c to continue or see
my administrator" (or similar) and have to hit c to continue. If that's the
problem, email me direct and I'll post the NeXT Networking setup.
http://www.peak.org/next/apps/internet/www/OmniWeb/ for a more
recent version? But one step at a time, I guess.
>Date: Mon, 29 Jan 2001 05:33:53 -0500
>From: Jeff Hellige <jhellige(a)earthlink.net>
>Subject: Re: Needed: 4 - 4meg 72pin non-parity SIMMs
>
>....
>The only NeXT I've seen listed as
>supporting more than 32meg is the '040 Cube. Otherwise, as far as I
>know, 8meg 72pin SIMMs will only work in the Turbo's.
True as far as I know. My 040 non-turbo Cube has 16 30-pin slots, all
currently stuffed with 4M simms for a total of 64M.
>Date: 29 Jan 01 03:21:04 +0100
>From: "Iggy Drougge" <optimus(a)canit.se>
>Subject: Re: Needed: 4 - 4meg 72pin non-parity SIMMs
>
>...OTOH, I'll gladly trade for 4 MB 30-pin SIMMs, parity or not.
http://www.sur-tech.com/cgi/page?menu,missim
I don't know if this is the best price, but I've dealt with
Christian before and it was a delight. "Will this drive work in my NeXT?"
"Probably, but hang on a second - I'll just pull another NeXT off the
shelf, open it up, plug in the drive, format it, write to and read from it
... yep, seems to work. You want it?" *That's* what I call service!
>Date: 29 Jan 01 03:26:47 +0100
>From: "Iggy Drougge" <optimus(a)canit.se>
>Subject: Re: Altaircomputers.org down??
>
>Okay, so now I'm thinking about a threesome between ChibiChibi,
>Jar-Jar and Pikachu. You bastard.
> A. Jones
How can one put a price on jewels like this?
- Mark
At 08:41 AM 1/30/01 -0500, Doug wrote:
>
>> Ha! Ha! Ha! Ha! Obviously you've never dealt with the IRS!!!!! They
>may
>> not "enter" your residence but they'll sure as hell padlock it shut until
>> they get what THEY want! As far as they're concerned you have about the
>> same rights that the Jews did in Nazi Germany!
>
>Actually, I have.
>
>In 1986, when I filed for Chapter 13, they sent me a letter saying
>I hadn't filed for 1985 and 1986 and owed an estimated $11,000 in
>back taxes.
>
>I wrote back saying, it was true, I hadn't filed for 1985, *yet*, but
>would do so now as I expected a refund. Additionally, I sent them
>photocopies of the 1986 filing & refund check they didn't seem to
>know about.
>
>And human engeineering has yet to create the lock
>that can keep me out of my house.
It's not the locks as much as it's the US Marshall's Service that backs
it up!
Joe
>
>
Hi,
On Thu, 25 Jan 2001 Jason McBrien wrote:
> I've seen these things around, a local advertising firm had stacks of them
> they were throwing away. These are basically Macintosh IIfx's clock chipped
> from 40MHz to 50MHz, in a gigantic metal tower case with power and frame key
> locks. An interesting machine, but remember before buying...
>
> 1 - The IIfx uses wacko 64-Bit (I think) SIMMs that aren't compatable with
> anything except a particular LaserWriter. These are VERY hard to find and
> expensive.
Some time ago, a seller on eBay mentioned in the item listing for some IIfx
SIMMs that they also work with Amiga accelerator cards made by GVP (Great
Valley Products).
Has anyone tried using IIfx SIMMs with a GVP card? (One which takes 64-pin
SIMMs, obviously.)
While the connector may be the same, I'm sceptical that they are compatible; a
few years ago I tried an AST 64-pin SIMM in my GVP card unsuccessfully.
-- Mark
One of the 'toys' I recently purchased is an eval board with the Xilinx
Spartan II 200K gate FPGA on it. My plans for this are classic computer
emulation. (there is already a PDP-8 VHDL description floating around and
I'm looking at doing one for the PDP-5, PDP-11, and PDP-12). But this board
includes bits that let you drive a VGA display with it if you choose and it
has PS/2 ports etc that you can also use. So I figured wouldn't it be cool
to actually try doing "new" Atari 2600 hardware or something like that? It
should be pretty easy to design a PONG equivalent game, the original was
all TTL gates anyway. All I need it another hobby I don't have time for but
it helps motivate me to learn the tools if I've got a project to work on.
--Chuck
> From: Alex Holden <alex(a)linuxhacker.org>
> Subject: Re: Machines I'm looking for...
>
> (Speccy +2A)
> Oh, the first machine I bought was one of those (before that I used my
> brother's VIC 20). It had the ROMs from a +3 (which had a
> disk drive) but
> the hardware of a +2 (which had a tape drive).
That was the +2B wasn't it? I know my +2B does things my +2A doesn't, like
have a RAM drive and the like.
> I still have a +3 in a drawer somewhere, but absolutely no
> disks for it...
Would you like a Vic-20 to play with again then? :)
--------------
> Date: Sun, 28 Jan 2001 22:02:57 +0000 (GMT)
> From: ard(a)p850ug1.demon.co.uk (Tony Duell)
> Subject: Re: Machines I'm looking for...
>
> I can see the point in having one of each type of machine,
> having spares,
> having examples of all the major revisions, etc. But there has to be
> _some_ difference between them in general.
*grin*. My ZX81 stack wins on this point because they're all in different
packaging, except the 2 kits! Can't say the same for Spectrums though, but
when someone's got a mint boxed one for a fiver I can never say no! Plus
they're good for trades.
> But in my case the first disk-based micro I ever used was an
> RML380Z at
> school. So when I saw such a machine at a radio rally, I bought it,
> partly for nostalgic reasons.
Heh. Me too, which makes you the same age as me. I hope you don't *feel* as
old as me though :o)
---------------------
> Date: Mon, 29 Jan 2001 10:23:17 -0500 (EST)
> From: Lincoln Fessenden <linc.fessenden(a)juno.com>
> Subject: DecStation Help please!
>
> boot 3/rz6/vmunix
> both without luck.. After each command the response is
> identical. The
> cdrom spins up for a minute and then stops. No further
> prompts, action,
> etc..
>
> Anyone have any suggestions?
You need to put it in quotes - "3/rz6/vmunix" as it's uppercasing it for
you.
-----------
> Date: Mon, 29 Jan 2001 11:37:49 -0500
> From: Tony Eros <tony.eros(a)machm.org>
> Subject: RE: Collecting and taxes
>
> Interesting question though -- "should the tax people visit
> my site they
> might think I'm making a living from buying and selling
> machines" -- what
> if the "site" in question is a web site? Can the revenooers
> use what they
> see on a web site against the owner? :-)
It was the website I meant actually - they'll see a list of the collection
and also some machines for sale or trade and think 'aha'.....
------------
--
Adrian Graham MCSE/ASE/MCP
C CAT Limited
Gubbins: http://www.ccat.co.uk (work)
<http://www.snakebiteandblack.co.uk> (home)
<http://www.binarydinosaurs.co.uk> (The Online Computer Museum)
0/0
>Date: Thu, 25 Jan 2001 10:38:03 -0500
>From: "Jason McBrien" <jbmcb(a)hotmail.com>
>Subject: Re: eBay Dash30fx
>
...
>1 - The IIfx uses wacko 64-Bit (I think) SIMMs that aren't compatable with
>anything except a particular LaserWriter. These are VERY hard to find and
>expensive.
http://www.sur-tech.com/cgi/page?menu,macsim Same comments as my
last post, where I forgot to get the subject line right, about the
proprietor - he's great.
- Mark
Please reply to the original sender.
Reply-to: Jjentrps(a)aol.com
---------- Forwarded message ----------
Date: Tue, 30 Jan 2001 11:55:14 EST
From: Jjentrps(a)aol.com
Subject: (no subject)
i have a ibm personal computer 5150 with monitor and keyboard and disks in
mint condition, how would i donate this computer without any shipping costs?
---
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
Hello all,
I just obtained three S-100 boards that I thought were floppy controllers,
but on inspection, may be something altogether different. I have no
documentation on these boards, so here's the description:
All three are marked "DYSAN (c) 1982"
Two are marked "Wear Tester Cert. Bd."
One is marked "Model V TrackWriter Certifier Sub."
All three have 34-pin and 50-pin connectors, and all three look to be the
same PCB layout, but with different components present or absent, and
slightly different silkscreenings. For example, the two "Wear Tester"
boards have ByteDAC chips in two sockets, but the "Model V" has those
sockets empty. Most of the other chips on the boards are either standard
"74" logic, or Op-Amps, or the aforementioned ByteDAC chips. All three also
have a National LH0032CG in a can (don't know if that's significant or not).
If anyone can identify these boards, or more importantly provide
documentation (including schematics), I would surely appreciate it! I am
willing to trade $$$ for information...
Thanks!
Rich B.
P.S. I'm a digest subscriber, so I will not reply immediately if you send to
the list....
> Interesting question though -- "should the tax people visit my site they
> might think I'm making a living from buying and selling machines" -- what
> if the "site" in question is a web site? Can the revenooers use what they
> see on a web site against the owner? :-)
Web sites currently don't enjoy the protection they should.
If you painted a picture of Superman on your bedroom wall,
because you like Superman and want people who come to your
bedroom to know you like Superman, that's fair use doctrine.
If you put a picture of Superman on your web site, and DC
Comics sees it, you'll get a cease-and-desist letter from
DC lawyers. And if you don't comply, you're in court. That's
because the law isn't making distinctions between corporate
and personal/private web sites, but it should. My personal
home page is a virtual bedroom wall.
Enough of that, we're swinging way off topic again.
-dq
> > Ha! Ha! Ha! Ha! Obviously you've never dealt with the IRS!!!!! They
may
> > not "enter" your residence but they'll sure as hell padlock it shut
until
> > they get what THEY want! As far as they're concerned you have about
the
> > same rights that the Jews did in Nazi Germany!
>
> This is no malarkey. An IRS data-entry error credited our tax payment to
> someone else's account, and the IRS immediately froze our bank accounts.
If
> not for the kind intervention of our Congresswoman, Corrine Brown, we
> probably would have had to close up shop.
>
> Warrant? Who needs one?
This is very quickly getting out of hand.
My comments were intended to deal with the issue of entry into my
home, and nothing more.
Regards to all,
-dq
> Ha! Ha! Ha! Ha! Obviously you've never dealt with the IRS!!!!! They
may
> not "enter" your residence but they'll sure as hell padlock it shut until
> they get what THEY want! As far as they're concerned you have about the
> same rights that the Jews did in Nazi Germany!
Actually, I have.
In 1986, when I filed for Chapter 13, they sent me a letter saying
I hadn't filed for 1985 and 1986 and owed an estimated $11,000 in
back taxes.
I wrote back saying, it was true, I hadn't filed for 1985, *yet*, but
would do so now as I expected a refund. Additionally, I sent them
photocopies of the 1986 filing & refund check they didn't seem to
know about.
And human engeineering has yet to create the lock
that can keep me out of my house.
Regards,
-dq
From: Cameron Kaiser <spectre(a)stockholm.ptloma.edu>
>If the TI uses a DSUB-9 connector (I must be the only one here who
doesn't
>have one), I wonder if the Tomy Tutor joysticks would work. I know TT
>joysticks are definitely not Atari compatible -- I nearly killed my C64
with
>one (remember that the joystick lines go right into the PLA, the glass
jaw
>of the C64).
Atari joysticks may work with the TI save for connector. The ti joystick
is only an array of contacts in PARALLEL with the keyboard contacts
and there is no logic inside.
A common problem is the TI version of the joysticks have a poor contact
life so bad ones are good for the plugs and wires.
Allison