Hi,
My Zilog S8000 Winchester Controller board carries 2 ceramic DIL16
packaged chips labeled (beside a logo) just with the two lines of text.
The chip looks like this (tried to ASCII-art the logo in front of the
text)
+----------------------------------------+
| +-------+ |
| |----- | |
\ | > ----| 6306-1J |
/ |----- | 8147 |
| | > ----| |
| +-------+ |
+----------------------------------------+
I guess the 2nd line means:
81 == 1981
47 == calendar week 47
So I wonder what 6306-1J stands for? I've not analyzed the circuit to see
if it is a PROM or something like that. It is put in a socket so I guess
it must be something (onetime?) programmable...
Maybe you can tell...
--
Oliver Lehmann
http://www.pofo.de/http://wishlist.ans-netz.de/
>
>Subject: Re: What kind of IC is this
> From: ard at p850ug1.demon.co.uk (Tony Duell)
> Date: Wed, 31 Dec 2008 22:50:52 +0000 (GMT)
> To: cctalk at classiccmp.org
>
>> > If you're lucky, eitehr th microcontroller is old enough not to
>> > have any
>> > security features, or they're not used. In which case you remove
>> > the chip
>> > from the PCB and stick it in a suitable programmer.
>>
>> Even the original Intel 8051/8751, circa 1980, has security
>> bits. :-( There are ways to get around (at least) those, though.
>
>Yes, but IIRC the 8048 series (common in classic computer stuff) doesn't...
>
>-tony
My fractional portion of currency is that the 630x is a hitachi varient of the
680x (6800 single chip mpus). I've seen and have some them from older hard
disks and DC300 tape drives that had mechanically expired.
Allison
On 19 Jan, 2009, at 05:10, cctalk-request at classiccmp.org wrote:
>> The steel parts are fine, but the rest has a white material over
>> most
>> of it. I'm not sure what sort of metal it is, looks a bit dark for
>> aluminum but the white material looks similar to aluminum oxidation.
>> What's a good approach to cleaning it up?
>
> I seem to recall that the drums on 02x keypunches were brownish
> (probably an anodized coating) and silver-metallic if you scratched
> them or they wore through. I suspect that the drum is a magnesium-
> aluminum die casting.
>
I always through they were rubber covered, but from the picture it
looks like I'm wrong. My 836 (like an 026) came without its drum and I
was told that all leased machines had their drums removed and the
customer got to dispose of the rest. Maybe it was rubbish. A couple of
them have come up on eBay in the last five years and both went for
silly money which to me means there are more keypunches than drums.
Roger Holmes.
Hi,
I haven't got ULTRIX/VAX V3.0C, but:
V2.0
V3.1 (disk image only)
V4.2
V4.4
V4.5
I'd like to have the missing versions, too.
More ULTRIX-Manuals would be VERY interesting as well.
(I scanned the ones at bitsavers.com)
What type of VAX do you want to run ULTRIX on?
Regards,
Ulli
Hi,
I was able to acquire 4 Zilog S8000 boards lately.
- S8000 Central Processing Unit
- S8000 Winchester Disk Controller
- S8000 Cartridge Tape Controller
- S8000 ECC Controller
I'm trying to get my hands on the Case and the 1MB memory card, but I was
wondering if someone has still pieces of the S8000 at hand? What about
tape images of ZEUS? I mean - when I'm getting the minimum required
hardware sooner or later - without an installation tape I'm a bit lost -
right? ;)
I've tried to put all the information I was able to found about the S8000
together at http://pofo.de/S8000/ I've scanned the boards I got and put
all the EPROM images online.
COPYRIGHT, ZILOG, INC. 1980
S8000 Monitor 1.2 - Press START to Load System
;)
--
Oliver Lehmann
http://www.pofo.de/http://wishlist.ans-netz.de/
As the title suggests, I have a PSS (Problem Solver Systems?) RAM65
S-100 static RAM board. No documentation. Anyone have any
docs/schematics/info about this?
I ask because I need to configure it, plus a chip appears to be missing
at IC51...
Thanks!
Josh
> -----Original Message-----
> From: cctalk-bounces at classiccmp.org
> [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Al Kossow
> Sent: Friday, January 16, 2009 9:45 PM
> To: classiccmp at classiccmp.org
> Subject: hams on classiccmp
>
> > Wonder who else?
>
> probably lots..
>
> Eric Smith just got his licence.
> I know Don North is, as am I (wb9ggj)
[AJL>]
Andrew Lynch, 73 de N8VEM
Hi, All,
I was one of the ones lucky enough to get one of the DEC Computer Labs
on ePay last month. Mine finally showed up, and after a quick
inspection, I'm ready to make some cables and hook up some circuits.
Somewhere, I do have the teacher's manual. It was given to me nearly
30 years ago, a thoughtful gift from my step-dad's mother who was the
local high school chem teacher. I haven't seen my copy in years, and
I'm worried it was one of the things I lost in a basement flood in the
1980s. I did a google search and a look through bitsavers and didn't
see anything to download, but I did see that this topic has come up on
the list before. There was a call for scanning the docs some time
back (6 years ago?) but no posting of where said scans might be.
Also, there are Phillip's pictures of the cables on grid paper, so
they look like pretty ordinary crimp pins, but I'm having to guess at
the nominal diameter... 3mm? From the cover of the student manual, it
looks like there are 25-ish of the shortest (brown) jumpers, and fewer
of each longer length, but if anyone has a documented count of the
number of each length of jumper wire, that'd be really nice to know.
So are there scans of the student and teacher's manuals for the
Computer Lab anywhere, and does anyone have a list (including in one
of the manuals) of the normal inventory of jumper leads?
Oh... one more thing... does anyone have any idea which bi-pin bulbs
DEC used on this? I didn 't tear mine apart far enough tonight to get
bulb details.
Thanks,
-ethan
Working with EPROMs, one must have an eraser. I built my own a while back, using a germicidal UV lamp tube, a flourescent fixture, a sealed box and a programmable timer. It works well, and I typically can erase an batch of eproms in like three minutes.
At least, when I was working primarily with 2732's and 2764's, I could. Now, I've been needing to use higher capacity chips - and these seem to take longer to erase. Five minutes isn't enough for some. AMD 27C010's seem to take closer to ten minutes to erase.
My eraser has a drawer that can accept about a foot of eproms (I used a 12" tube). I could probably cram more on there, but I try to keep them centered under the light. So, if I stick a dozen chips on there, of varying sized and types, and 'nuke' them for five minutes, I'll go and blank-check them, and some will be blank, others will be nearly blank (lots of FF's, but some garbage left), and some don't seem affected at all. I've been trying to come up with a correlation between manufacturer and erase time, but it seems to vary. Last time, I nuked four AMD 27C010's that I pulled off of an old LaserJet font cartridge. Three were unaffected and the other was blanked.
I worry about leaving the chips in there too long, since I know too much UV can damage them. But at the same time, I wonder about the lifespan of the UV tube - and how many hours it's good for. (I guess I should have checked the package when I bought it...).
So, how much UV exposure does it take to damage an EPROM? Is UV exposure cumulative? For example, if I have a chip that's unaffected by five minutes, and I put it back in for another three - is that the same as as running it for 8 minutes total, or do the charges that the UV is supposed to dissapate simply linger? Are CMOS chips harder to erase, taking a longer time than the older parts?
-Ian
