I just unpacked the rack with my TU56 DECtape drive and discovered that
the movers managed to break the takeup reels. This, despite many layers
of foam padding, stretch film, and warning signs. On the other hand,
this was the only item that suffered any damage at all. Not too bad for
three moving van loads!
Can anyone help me with an empty DECtape reel or two?
Thanks,
Alan Frisbie
On Wed, 2021-12-15 at 12:00 -0600, cctalk-request at classiccmp.org wrote:
> Not sure who needs to know.
> Perhaps they are useful for emulation crash analysis, or for
> educational
> purposes.
> You also see the highly optimizing BLISS32 compiler at work.
First thing that popped into my mind was "fix the huge DCL security
hole finally for VAX." I don't think it has been done yet. Be a lot of
reading after OCR though, too bad it wasn't text files. Also I have no
clue how to program BLISS32 or even MACRO-32, so mostly a pipe dream.
Hi all,
the german Engeneer Tillman Reh has build an Zilog Z280 SBC card with
Eurocard Bus connector:
http://oldcomputers.dyndns.org/public/pub/rechner/zilog/z280/index.html
The Software is open and Tillman allows the PCB to be reproduced from
his original Gerber files on request.
Unfortunately some parts for those cards are almost unobtanium in the
meantime, the Zigzag DRAMs, the COM8117 Uart, the LT1134 Driver chip
and also the SMC FD37C65CLJP FDC are difficult to source.
I have two such cards and I got all the necessary parts, but I have
friends that are also interested in such a card to run CP/M 3 or UZI280
on that Z280 (The Z800!) 16 Bit CPU.
There are many other FDCs that should be compatible, the WD37C65 for
example. This was used in many PC related Floppy controllers..but they
are in fact not compatible. The use of the SMC37C65CLJ P seems to be
necesary for this board, for reasons that are unclear.
While copying data to the disc there happens a timeout on the earlier
FDC varaints, I have read somewhere that reading the status register
gives unexpected results, they have tried to fix this already in the
90ies by inserting some delays, w/o success.
Has someone here Errata Sheets for those SMC FD37C65B (not working) and
FDC37C65C (working) variants of that FDC Chip, so that one can see what
they may have changed between the releases?
Here are some part of the BIOS:
; I/O-Page mu~ bereits auf BOARDP gesetzt sein. Ver{ndert ABHL.
FdcCom::
if loader
ld hl,CList
else
ld hl,(CmdAdr) ; Zeiger auf Befehlsliste
endif
FdcCo1::in a,(FdcSta) ; (Einsprung mit Zeiger in HL)
rla
jr nc,FdcCo1 ; warten bis FDC-RQM (Request for Master)
rla
jr c,FdcErr ; bei falscher Datenrichtung: DIO-Error
nop
nop
nop
ld a,(hl)
out (FdcDat),a ; Befehls/Datenbyte an FDC ausgeben
inc hl ; Zeiger auf naechstes Byte
djnz FdcCo1 ; alle Befehlsbytes ausgeben
ret
; DIO-Error (Datenrichtungsfehler im FDC) : Stoppen des Systems
;*** evtl. Fehler korrigieren und weiterarbeiten?
; (Ist Fehler ueberhaupt korrigierbar?)
FdcErr: ld hl,DioMsg
call PMsg ; "DIO-Error" ausgeben
di
halt ; sicherheitshalber nicht weiter arbeiten
It seems that the FDC Status register requests a data transfer in the
wrong direction on the B-Release Chips... It is this "DIO-Error" that
happens after a few write operations, but formating the disk is possible.
Kind Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Goethestrasse 15, 09569 Oederan, USt-Id: DE253710583
info at tsht.de Fax +49 37292 709779 Tel +49 37292 709778 Mobil: 0172 8790 741
I will be in Switzerland/Germany near Davos Feb 5-15 and I was curious what
kinds of museums and sights were worth planning to see during this time of
the year in that area? Is there an orchestra concert show season there?
Any recommendations for resources for travelers that are not overly
commercial, in English, would be appreciated.
On the inside of an old painting of my great great great grandfather from
around 1830 was a piece of paper with a note written by his granddaughter
many years later about someone called "Count von Burlowe" (spelling?) about
a partnership to found or make commercial a health resort called "Bad
Krautzma", but I believe she was way off spelling-wise. It's written in
19th century US cursive, hard to read. So I am interested in learning a
bit about my heritage too.
Thanks
BIll Degnan
Landenberg, PA USA
Are you still in need of any HP1000 RTE equipment? I have a lot of boards, chassis?, tape drives, etc. If not and if you know of someone who would be interested in this equipment please let me know?Kind Regards?Joe
Sent from my iPhone
Since they're vintage...
A friend is selling two HP 3000/928LX computers. I don't know what he
wants for them. For people interested in the HP 3000, this would be a nice
buy.
Size-wise, they're between a PC and a 2-drawer file cabinet in size.
They'll be network capable (may require a transceiver, but likely comes
with, and they're generally about $10 otherwise).
The following describes one, but there are two...
----
1. HPe3000 928LX.
2. 128mb main memory.
3. (2) 4gb internal disk drives.
4. DDS-2 internal tape drive.(two in one system and one in the other)
5. MPE/iX 7.5 Operating System with 8 user license.
6. System Consoles with keyboards.
7. SE SCSI Interface Card
8. External Disk drive mini cabinet with SCSI drives
Bonus: Backup and systems DDS tapes, Manuals, extra 4gb SCSI disks, and
Misc. Documentation
Lots of software.
Both systems were operating when shut down recently. Buy as is with no
guarantee..
Make an offer. Buyer to arrange packing and shipping.
Location: At my home office in Carrollton, TX
Contact Paul Edwards, pedwards at gte.net
I have two power supplies that I no longer need.
1. Power One model SPM5A2M6G1K: 115 VAC 30 A or 230 VAC 15 A 50-60 Hz
input, outputs 48 V 5 A, 5 V 10 A, 2 x 12 V 10 A, 5 V 150 A.
? ? 13" x 5" x 8 ", 17 lb
2. Lambda LM 124 FM lab supply: 115 VAC 50-60 Hz input, outputs 0-40 V,
0-1.5 A
? ? 17" x 4" x 5", 13 lb
Yours if you send me a PDF of a shipping label. I can send photos (but
they're too big to fit in classiccmp.org mailings).
Local pickup OK.
Van Snyder
La Crescenta, CA
Hi all,
where do you guys go for assembly of your boards, when you replace old
stuff?
Not too many places like THT anymore, and getting ridiculously expensive
lately.
Any recommendations?
