Hi all,
I've just been skimming the archives and while I've spotted a couple of Amstrad PPC640 threads, one of which confirms that you can use a normal 12V power supply, none of them indicate the amps needed nor the polarity.
I found one of these units at a swapmeet a month or so ago but it was sans power supply. I'm hoping to get it up and running within a couple of weeks for a demo in an introductory computing class.
TIA, Chris J.
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I have a DEC VR320 monitor which I have never been
able to get to work on a PC and don't want to spring
for an expensive video card that would sync to it.
I also have a Dec Rainbow 100+ with a color card that
I use with a VR241-A monitor, and a DEC Pro 150.
It occurred to me that the RB or the Pro 150 (in mono)
might work with the VR320. I don't want to chance
blowing something or causing the magic smoke to
escape tho.
Does anyone have any info on this ?
Lawrence
lgwalker@ mts.net
I guess I could scan the CIS chip.. I know I have at least 3 or 4 of them.
Will J
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To find DEC MMJ cables, go to
http://catalog.blackbox.com/BlackBox/templates/blackbox/search.asp
and look for keywords DEC MMJ.
You will probably need at male-male MMJ and a female MMJ to DB9/DB25.
AS with any serial connection, verify pins (on a DB-25) 2-7 and 3-7 (i.e.,
make sure terminal/PC is transmitting on one line, DEC VAX is transmitting on
the other). I usually do this with a VOM; transmit will be a strong (5-15
VDC) signal; receive may be around 0.
Usually you will get a >>> prompt from VAX firmware. It will accept a help
command and you can do "show devices", then try "boot dua0:" or some other
disk device that's listed (they are 99% devices beginning with "d").
Of course you may get a very first product/CPU ID, then some testing
messages. You are hoping that it progresses through the self-tests and gets
you to the >>> firmware prompt. Often >>> will take a "help" command too.
Often you need to send "delete" and not "backspace." Try 9600/8/N/1 settings.
Also probe the Compaq, Montagar, and Process sites. With the VMS hobbyist
program you can get going pretty well these days.
Message: 26
Date: Tue, 7 Jan 2003 16:27:54 -0500 (EST)
From: Megan <mbg(a)TheWorld.com>
To: cctalk(a)classiccmp.org
Subject: Re: Chip Upgrades for 11/23 (was Re: 11/03 system on eBay sold)
>
>>Yes, there sure was a CIS chip for the 11/23[+]. And I am still looking
>
>I know... I have one (maybe two) KDF11-B boards with the CIS chip.
>
>>for one to upgrade one of mine. I do have the FPF-11 floating point
>>processor board that alternately connects to the socket for the FIS
>>chip, I have a FIS chip in another processor board, but the sockets for
>>CIS are still vacant in both.
>
>It was my understanding that the EIS/FIS chip is only usable with
>the 11/03 (11/2, PDT) machines (and the PDT requires the dual microm
>in order to make space for it).
Sorry to correct you, but EIS/FIS is an option to the F-11 uprocessor, hence
for 11/23, 11/23+ and 11/24 computers. I'm not aware of any CS-firmware options
for 11/03 or 11/02.
>The CIS chip is a dual-wide
>chip... it spans two chip spaces on the 11/23 and 11/23+ boards.
>
>>Once I get it / Should I ever get it, which languages could make use of
>>it? - Assembler, of course, and COBOL, I think?
>
>You can always do it in assembler. As for cobol or other layered
>products, you probably have to use a version which has been specifically
>built to use those instructions (or can detect their availability on
>the fly and use them).
Dibol does that.
regards,
Frank Arnold
John, I've been trying to get up with you for over a
month to find out if that CDROM drive worked or not.
Please contact me off-list.
Thanks,
Frank
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Montvale Software Services, P. C.
P.O. Box 840
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On Jan 9, 11:36, Frank Arnold wrote:
> I wonder, EIS/FIS chip as well as CIS are basicalley Roms that expand the
> microcode control store of the F-11 microprocessor. True?
Almost. They are ROMs, but EIS/FIS is for the 11/03 KD11 processor, not
the F-11 family. CIS is a set of microcode ROMs for the F-11.
There's quite a lot of information in the KDF11 CPU Module User Guide, and
probably more in a technical manual. Basically, it seems that the the
microcode is stored in a device with two bidirectional 16-bit busses (MIB
and CDAL). MIB is a multiplexed bus. Part of the time it outputs the
current microinstruction and the rest of the time it receives control
signals from the CPU. The CDAL bus (which is actually a 22-bit bus, but
only 16 bits are presented to the option sockets) is what eventually
connects to the external BDAL bus, but it's also used internally for
control signals.
--
Pete Peter Turnbull
Network Manager
University of York
On Jan 9, 11:36, Frank Arnold wrote:
> From: Megan <mbg(a)TheWorld.com>
> >It was my understanding that the EIS/FIS chip is only usable with
> >the 11/03 (11/2, PDT) machines (and the PDT requires the dual microm
> >in order to make space for it).
>
> Sorry to correct you, but EIS/FIS is an option to the F-11 uprocessor,
hence
> for 11/23, 11/23+ and 11/24 computers. I'm not aware of any CS-firmware
options
> for 11/03 or 11/02.
No, Megan is correct. EIS/FIS is an option (a single 40-pin MICROM IC
called a KEV11) on the 11/03 KD11 processors. The relevant instructions
are built-in on the 11/23 and 11/24 KDF11 processors. The options for the
KDF11 are KEF11-BB CIS (dual-width), DC304 MMU chip, and KEF11-AA floating
point.
--
Pete Peter Turnbull
Network Manager
University of York