------------------------------
On Mon, Feb 25, 2013 2:19 PM PST Richard wrote:
>EGA and CGA have compatible signalling, but MDA is very different
>(TTL vs. analog signalling).
None of those monitors are analog. Internally EGA monitors mix it up differently, but all the above monitors take digital inputs. The EGA just has more. A analog monitor is RGB, CGA is RGBI, EGA is RGBI + 2.
>Presumably the color ones she mentions are either CGA or EGA and the
>mono ones are MDA.>
There were others...
in GERMANY. International shipping available ( 12 Euros / $ 15 ?? )
Not affiliated in any way with the seller.
Just for information of this list members ;-)
http://cgi.ebay.fr/ws/eBayISAPI.dll?ViewItem&item=330878622028&ssPageName=A…
Please, let me know if this kind of "information" is helpfull for the list, or NOT.
and if I should continue to post such "findings" ??
Date: Mon, 25 Feb 2013 11:06:53 +0000
From: Dave <dave.g4ugm at gmail.com<mailto:dave.g4ugm at gmail.com>>
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk at classiccmp.org<mailto:cctalk at classiccmp.org>>
Subject: Re: Strobe plotter documentation or information?
Message-ID: <512B45CD.8090903 at gmail.com<mailto:512B45CD.8090903 at gmail.com>>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 25/02/2013 11:06, Dave wrote:
> Carl
>Poking around on the net, in particular here:-
>
>http://www.atarimagazines.com/creative/v10n2/212_Print_about_printers.php
>
>and here
>
>http://www.cpm.z80.de/roche/DRGDOC.TXT
>
>and here
>
>http://bitsavers.informatik.uni-stuttgart.de/pdf/convergent/manuals_b20/118…
>(Page 135 onwards)
>
>implies that the interface is RS232 and that it kind of understands a
>subset of HPGL....
>
>
Hi Dave
Yes, those links were the three mentions that I had previously found (plus links to some ads in archived magazines).
However, since the interface board is a S-100 bus card labeled as "Strobe 100 parallel interface" I believe the RS232 is a different option that this does not have, or the link from the plotter enclosure to the card itself is using RS232.
The Burroughs document defines their graphics subroutine library and mentions that these can be used (unsupported) on the Strobe plotter, but not enough to write anything that will talk to the box. Further, they mention in appx B the configuration file that defines the format for talking to each peripheral that there is a format Strobe which is different from the HP plotter formats. The review link mentions commands, which do not sound like HPGL to me, but with only these three documents to go on, it is a grain of data and a pound of interpolation to decide what the protocol might look like.
The DR Graph document mentions a unique driver for the plotter, in a long list of many different monitors, plotters and printers. All of these documents suggest to me there is a unique programmatic interface, thus I was hoping for a one in a million chance that someone has the manual or enough documented about this plotter to allow me to send it valid sequences. All mention RS232 so that may at least resolve the question of communications protocol - well documented across the three links you listed. What to send over that link is the question now. Reverse engineering may be quite challenging, but I might be able to replace the controller inside the plotter with my own controller, driving the servos and motor myself, thus free to create my own programming interface.
Thank you for looking and posting the citations.
Carl
________________________________
This e-mail message, including any attachments, is for the sole use of the person to whom it has been sent, and may contain information that is confidential or legally protected. If you are not the intended recipient or have received this message in error, you are not authorized to copy, distribute, or otherwise use this message or its attachments. Please notify the sender immediately by return e-mail and permanently delete this message and any attachments. Gartner makes no warranty that this e-mail is error or virus free.
Hi folks,
having several Alphaserver 1200's in my collection, I thought I could part with one so that it find a good new home and make somebody happy.
Unit is tested and located in Germany near Cologne, local pick-up preferred.
Dual CPU 533MHz, 1GB RAM, 3x 9GB and 1x4GB disks, graphics and network card, 1x CD-ROM drive.
Please make offers.
Kind regards,
Pierre
------------------------------
console output:
starting console on CPU 0
sizing memory
? 0??? 256 MB
DIMM
? 1??? 256 MB DIMM
? 2??? 256 MB DIMM
? 3??? 256 MB DIMM
starting console on CPU 1
probing IOD1 hose 1
? bus 0 slot 1 - NCR
53C810
? bus 0 slot 2 -
QLogic ISP1020
probing IOD0 hose 0
? bus 0 slot 1 - PCEB
??? probing EISA
Bridge, bus 1
? bus 0 slot 2 - S3
Trio64/Trio32
? bus 0 slot 3 -
DECchip 21140-AA
** keyboard error **
configuring I/O adapters...
? ncr0, hose 1, bus 0,
slot 1
? isp0, hose 1, bus 0,
slot 2
? floppy0, hose 0, bus
1, slot 0
? tulip0, hose 0, bus
0, slot 3
System temperature is 9 degrees C
AlphaServer 1200 Console V5.3-1, 27-OCT-1998 11:16:38
?
CPU 0 booting
?
(boot dkb0.0.0.2.1 -flags A)
block 0 of dkb0.0.0.2.1 is a valid boot block
reading 32 blocks from dkb0.0.0.2.1
bootstrap code read in
Building FRU table
base = 200000, image_start = 0, image_bytes = 4000
initializing HWRPB at 2000
initializing page table at 1f2000
initializing machine state
setting affinity to the primary CPU
jumping to bootstrap code
?
halted CPU 0
?
halt code = 5
HALT instruction executed
PC = 20000000
boot failure
P00>>>sho config
?????????????????????????? Digital Equipment Corporation
???????????????????????????????? AlphaServer
1200
?
?Console V5.3-1? OpenVMS PALcode V1.19-18, Digital UNIX
PALcode V1.21-26
?
?Module????????????????????????? Type???? Rev??? Name
?System
Motherboard????????????? 0??????? 0000?? mthrbrd0
?Memory? 256 MB DIMM???????????? 0??????? 0000?? mem0
?Memory? 256 MB DIMM???????????? 0??????? 0000?? mem1
?Memory? 256 MB DIMM???????????? 0????? ??0000?? mem2
?Memory? 256 MB DIMM???????????? 0??????? 0000?? mem3
?CPU (4MB Cache)???????????????? 3??????? 0001?? cpu0
?CPU (4MB Cache)???????????????? 3??????? 0003?? cpu1
?Bridge
(IOD0/IOD1)????????????? 600????? 0032?? iod0/iod1
?PCI Motherboard???? ????????????a??????? 0003?? saddle0
?
?Bus 0? iod0 (PCI0)
?Slot?? Option Name????????????? Type???? Rev??? Name
?1????? PCEB???????????????????? 4828086? 0015?? pceb0
?2????? S3 Trio64/Trio32???????? 88115333 0044?? vga0
?3????? DECchip 21140-AA???????? 91011??? 0012?? tulip0
?
?Bus 1? pceb0 (EISA Bridge connected to iod0, slot 1)
?Slot?? Option Name????????????? Type???? Rev??? Name
?
?Bus 0? iod1 (PCI1)
?Slot?? Option Name????????????? Type???? Rev??? Name
?1????? NCR 53C810?????????????? 11000??? 0002?? ncr0
?2????? QLogic ISP1020?????????? 10201077 0005?? isp0
P00>>>sho power
?
??????????????????? Status
Power Supply 0?????? good
Power Supply 1?????? good
System Fans????????? good
CPU Fans???????????? good
Temperature????????? good
?
Current ambient temperature is 10 degrees C
System shutdown temperature is set to 55 degrees C
?
The system was last reset via a power-on reset
?
3 Environmental events are logged in nvram
Do you want to view the events? (Y/<N>) y
?
Total Environmental Events: 3? (3 logged)
?
1? FEB 17 12:52? Temperature, Fans, Power Supplies Normal
2? FEB 25 18:36? Temperature, Fans, Power Supplies Normal
3? FEB 25 19:15? Temperature, Fans, Power Supplies Normal
?
Do you want to clear all events from nvram? (Y/<N>) y
P00>>>
P00>>>sho dev
polling ncr0 (NCR 53C810) slot 1, bus 0 PCI, hose 1 ?? SCSI Bus ID 7
dka500.5.0.1.1???? DKA500?????????????????? RRD46? 0557
polling isp0 (QLogic ISP1020) slot 2, bus 0 PCI, hose 1?? SCSI Bus ID 7
dkb0.0.0.2.1?????? DKB0???????????????????? RZ1CB-CA? LYJ0
dkb100.1.0.2.1???? DKB100?????????????????? RZ1DF-CB? 0372
dkb200.2.0.2.1???? DKB200?????????????????? RZ2DA-LA? N1H1
dkb300.3.0.2.1???? DKB300?????????????????? RZ1DF-CB? 0372
polling floppy0 (FLOPPY) PCEB - XBUS hose 0
dva0.0.0.1000.0??? DVA0????????????????????? RX23
polling tulip0 (DECchip 21140-AA) slot 3, bus 0 PCI, hose 0
ewa0.0.0.3.0?????? 00-00-F8-31-4E-4D??? Twisted-Pair
P00>>>
?
-------------------------------------------------------------------------------
Pierre's collection of classic computers : http://classic-computing.dyndns.org/
The 20 wire cable that might have been an RS232 link is definitely not - among other signs, pin 3 is ground, not receive data.
The S-100 interface card has no UART or intelligence, just routes the signal lines through an 8255A to the bus.
Finally, opened the plotter itself - no microcontroller/processor, no logic circuits, just transistor drivers to activate the stepper motors and solenoids, wired to the various lines of the cable.
So, yes, it is a parallel interface and it appears to be completely proprietary to the Strobe plotter. No fancy protocol to speak to it, at least, just raise lines to drive the motors one way or the other in 3.6 degree rotary steps. The power supply in the plotter has a 7805 on it, so appears to be standard TTL 5V interface at first glance.
Seems it will be more straightforward than I thought to put this into service.
Carl
________________________________
This e-mail message, including any attachments, is for the sole use of the person to whom it has been sent, and may contain information that is confidential or legally protected. If you are not the intended recipient or have received this message in error, you are not authorized to copy, distribute, or otherwise use this message or its attachments. Please notify the sender immediately by return e-mail and permanently delete this message and any attachments. Gartner makes no warranty that this e-mail is error or virus free.
If anyone is looking for old 9-pin monitors, color or mono, please let me
know.
_____
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2899 / Virus Database: 2641/6130 - Release Date: 02/25/13
There are a few Princeton, Taxan and other uncommom brands I could be interesred in. CGA, MDA, and largely EGA I am not. If you have a list w/model numbers, I'll be sure and look it over.
------------------------------
On Mon, Feb 25, 2013 9:18 AM PST Cindy Croxton Electronics Plus wrote:
>If anyone is looking for old 9-pin monitors, color or mono, please let me
>know.
>
>
>
> _____
>
>No virus found in this message.
>Checked by AVG - www.avg.com
>Version: 2013.0.2899 / Virus Database: 2641/6130 - Release Date: 02/25/13
>
I am soliciting offers for a very nice condition HP 2116C with a 2748 tape
reader until the end of this week.
Here's a not great photo. The 2748 is on top beneath the shrinkwrap.
http://vintagetech.com/photos/bigiron/HP%202116C.JPG
This is in very good condition cosmetically, just a little dirty. I will
get better photos after I've cleaned it up and get a hold of a key so I
can open the front door.
The configuration is roughly as follows:
TOP SHELF:
02116-6175 - POWER FAIL
02116-63248 - MDB
02116-63212 - MAD
02116-? - "SSA"
02116-? - "XYD"
02116-63210 - INHIBIT DRIVER
MIDDLE SHELF:
02116-6208 - A101
02116-6237 - A102-105
02116-6237 - A102-105
02116-6237 - A102-105
02116-6237 - A102-105
02116-6028 - A106
02116-6258 - A107
02116-6029 - A108
BOTTOM SHELF:
???
More details are in this file:
http://vintagetech.com/photos/bigiron/2116C/Notes
My asking price is $6,000, but I will consider any offer over $4,000 until
this Friday.
Please contact me directly if you have any further questions.
Thanks!
--
Sellam Ismail VintageTech
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintagetech.com
Whatsoever a man soweth, that shall he also reap...The truth is always simple.
Hi, all retrocomputing fans!
I'm starting a new podcast called Floppy Days to discuss vintage computers and calculators. I plan to cover things like:
- history
- specs
- emulation
- modern upgrades
- magazines/books
- assembly language tools
and much, much more.
I plan to cover the vintage computers and vintage programmable calculators in which I have interest, or in my collection, and would be willing to cover computers I've never seen or were not popular or available in the U.S. I would love to be able to interview experts on these systems as well, if anyone would be willing to participate.
I would also like to know if anyone would be interested in being a co-host for this show. It would make it much easier to pool our knowledge and share the workload.
The podcast is on iTunes, or you can download it at:
floppydays.libsyn.com
Thanks so much and please listen and provide feedback if you can.
Randy Kindig
floppydays at gmail.com
voice mail 206-426-7200
Web site floppydays.libsyn.com
Sent from my iPad
