>Now this is sounding fun. One question, do you feed the output from the
>SLU to the input of the VT?
You should be able to do that... but the VT103 had some special
paddle board which plugged into the connector on the VT100
basic video board and which provided a connector (2x5) which
connects to something like an MXV11-B, and a second connector
which also attaches to the MXV11-B (or DLV11-J) and routes the
signals through to the external connector (if I remember
correctly - otherwise it provides a separate external
conenction).
I'll have to open up my VT103 at work one of these days to get
the info for you (like part numbers).
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry zk3.dec.com |
| Unix Support Engineering Group | (home): mbg world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of ' ' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
> Wow. I didn't know that anybody besides Commodore ever used XT IDE. I
have
> a couple of WD-98???-X drives, one in a Commodore Colt that I use for ROM
> burning. IIRC, WD made 20Mb and 40Mb XT IDE before moving on to AT IDE.
> Commodore even designed-in an XT-IDE port on their A2091 and A590 disk
> controllers for the A2000 and A500, respectively. The A590 did ship with
> 20Mb XT drives; the A2091 did not have the 40 pin connector soldered in
place.
> It does work; I have retrofitted one. They are slow.
>
> And, yes, the ST251/251-1 are both MFM. I use them on ancient DEC
hardware.
>
> -ethan
>
>
I believe the Tandy 1000 TL/2 and TL/3 (not sure about the TL/2) also had a
built-on XT-IDE controller. The TL that I have has a HardCard.
--
-Jason
(roblwill(a)usaor.net)
ICQ#-1730318
(in his best Rodney King voice)
Can't we all just get along?
Actually, for me, Providence is quite a haul :)
Tony
> -----Original Message-----
> From: William Donzelli [mailto:william@ans.net]
> Sent: Tuesday, August 18, 1998 1:54 PM
> To: Discussion re-collecting of classic computers
> Subject: RE: Tony - SOL docs and MIT flea market
>
>
> > >Dare we attempt to create a Boston area computer users
> group with our
> > >raggedy group?
> >
> > I'd join...!
>
> Hey, Providence is not too far away.
>
> (Blatant RetroComputing Society ot Rhode Island plug).
>
> William Donzelli
> william(a)ans.net
>
Okay, which board do you have?
Jeff
At 12:25 PM 8/18/98 -0500, you wrote:
>>
>>
>> Ethan:
>>
>> Try www.natinst.com. Far as I know national still supports prettyy much
all
>> of their hardware.
>
>When I first got the cards last year, I tried them. I couldn't find
>a reference to my board. I wasn't surprised (the board is over 10 years
old),
>so I stopped digging.
>
>Maybe they have added more to their support page recently.
>
>Thanks,
>
>-ethan
>
Ethan:
Try www.natinst.com. Far as I know national still supports prettyy much all
of their hardware.
At 09:15 AM 8/18/98 -0500, you wrote:
>
>> > I came up with an IEEE488 8-bit card, with drivers. Anyone want it?
>> >
>> > manney(a)lrbcg.com
>> > "Enough is abundance to the wise." -- Euripides
>
>What is the card? What drivers? I have a couple of 8-bit IEEE-488 cards
>and _no_ drivers. It's a standard, but old, National Instruments card. If
>you tell me the model number of yours, I'll check it against mine when I get
>home. I'd love drivers for it.
>
>-ethan
>
At 09:56 PM 8/17/98 -0500, Doug Yowza wrote:
>OK, it's been killing me, so I've just gotta ask. What do you do with a
>C64 running at 20MHz? Play a *really* fast game of Ms. Pacman?
>
>-- Doug (from his 200MHz IMSAI 8080)
Tsk, tsk! ONLY 200mhz??? Didn't you see the IMSAI overclocking FAQ???
:)
-
- john higginbotham ____________________________
- webmaster www.pntprinting.com -
- limbo limbo.netpath.net -
< Well, Joan did want to start a club called Computer Preservationists of
< Massachusetts (CPM for short). Maybe this might be the time to get it
< goin'.
Sounds like a good thing. There are people in RI and south RI doing
this as well.
Allison
< then wire-wrap one slot AB<->CD... Also, when I did it, I went down
< to one of the Digital Stockrooms and picked up some specialized
< 'power strips' which were generally used for bussing DC on the
< backplane, but could also be used to connect signal pins. It was
< a copper strip which had alternating pin-sized holes and large
< holes which wouldn't contact the pin... Perfect for connecting
< corresponding pins of successive backplane slots...
I have a bunch of them still, for exactly that use! Handy for home made
backplanes!
Allison
< two minutes? that is slow... I can boot my TU-58 based system
< in 30 seconds... (I engineered an optimized TU58 many years
< ago when people within Digital were asking how to get it to boot
< faster). It involves specific placement of various RT-11
< files on one of the four recording tracks. For those who wanted
< the system to run faster once booted, you could additionally take
< the step of loading stuff into VM and rebooting it it...
Having done that (I have a system I can demonstrate) plus the VM: trick
it's possible to build a really nice system using TU58 only! It's in the
V5 RT11 doc set.
FYI for the 11/730 hackers the TU58 boot tape for that beast also has an
optimum order for faster booting.
< (depending on the rev of the 11/23... only Rev.C could
< do so).
I've found earlier revs do, but not all and they may fail diagnostics
while appearing to work normally. I try to reserve 11/23 (KDF11-A M8186)
to 256k unless I've verified it's a REV-C or later and tested it.
The later 11/23B (KDF11-B M8189) is Q22 and saves needing a boot rom/card.
They are common enough.
Allison
