Hi,
I picked up a couple of blue three ring binders with Perkin Elmer logos
on them. Both have manuals in them. One is for PECESS Software Packet for a
UV/VIS/NIR Spectroscopy and has some printouts with BASIC listings. The
other has a manual for Command Descriptions Reference Manual for CDS-3
Application program. Does anyone want them? I'll trade for something I can
use like HP manuals, Tektronix 4041 manuals or ????
Joe.
>On my much-older and much-more-clearly-used Cipher on the Prime,
>the rubber pads are fine; on this nearly-new-looking TS05, they
>have lost all firmness and have turned almost to the consistency
>of tree sap. They didn't drip, they weren't that bad; but one
>attempt to load a tape left most of the pads on the inside of the
>tape reel.
>
>It seems strange for the drive to look so otherwise perfect and
>these items to be mush. Any thoughts?
Storage conditions, especially atmospheric ozone. I spent 6 years
living in LA, and the lifetime of my natural-rubber bike tires there
was measured in months. Foam would either dry up and turn brittle
or go the other way and turn gooey, typically within a couple of
years of manufacture.
Obviously temperature and exposure to UV light/direct sunlight are
factors too.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Hello,
The TS05 I picked up last week looked to be in perfect condition.
There was very little dust on or in it. However, I did notice a
slight amount of rust on the shaft coming out of the take-up
motor (the top of the shaft is visible through the hub). On
further inspection, there is a slight amount of oxidation on
the surface of the takeup hub; this can be easily removed with
Scotch-Brite, I think. But what disturbs me is this...
I found one particular sign that this drive may not have been
used for some years. The supply hub has three short arms which
emerge from their normal position tucked inside the supply hub
and which press against the inside metal rim of the tape reel
in order to hold it in place. Each little arm has a small rubber
or latex pad which helps to provide grip against the tape reel.
On my much-older and much-more-clearly-used Cipher on the Prime,
the rubber pads are fine; on this nearly-new-looking TS05, they
have lost all firmness and have turned almost to the consistency
of tree sap. They didn't drip, they weren't that bad; but one
attempt to load a tape left most of the pads on the inside of the
tape reel.
It seems strange for the drive to look so otherwise perfect and
these items to be mush. Any thoughts?
Plus, anyone been there/done that? I need to replace these pads,
and they weren't listed in the Cipher manual as a replaceable
part (you have to replace the entire supply hub, it would seem).
tia,
-doug quebbeman
> Unless I'm mistaken, the 7980XC is a current production drive. At least it
> was about a year ago. You should be able to still get complete docs direct
> from HP.
Apparantly, they don't want to admit it being an HP product on their
web site, as I can't find it through the usual means.
-dq
In a message dated 7/5/00 1:03:22 PM Eastern Daylight Time,
elmo(a)mminternet.com writes:
>
> IIRC ADM-5's have gone unsold on Ebay at $19-24 for some time, from
> more than one seller. The latest seller has quantity and includes a
> transport
> case. Exhorbitant?
>
>
I just re-checked Ebay's past and present sales and found 1 (one) sale of ADM
terminals....Currently going for $24.00. Seller has 4, HOWEVER, they are
going AS IS. I would like to find a <working!> ADM 3 or 5 preferably from
someone qualified enough to make that judgement.
You see, $24 would be a lot of money with a $60 shipping charge for a broken
dumb terminal.
-Linc.
>
> Great drive (If it's the same as the one they OEM'd to Pyramid).
> 1600/6250 bpi.
>
> It's fast and reliable. Is it the SCSI, Pertec or other version.
>
HPIB...
I've been looking for documentation on the web but, haven't found any :-(
Steve Robertson <steverob(a)hotoffice.com>
A person in my state has expressed willingness to come to my home and pick
up the TRS items. Since such an arrangement would relieve me of the time
demands of packing and shipping the items, I have given that person first
chance to get all of it. Once he has looked at it, I will repost to the
ClassicCmp mailing list regarding what is still available. Thanks for your
interest.
Arthur Clark
Carlos Murillo <cem14(a)cornell.edu> wrote:
> Well, I made the cable and plugged it into a terminal. The
> right voltages appear on the correct lines. However,
> the card never asserts DTR or RTS when I turn the computer on.
I think that makes sense -- it looks like DTR and RTS are under program
control (i.e. it's up to software to set the appropriate control register
bits).
> I also discovered that the HD in the 7946 is busted
> (haven't opened it yet)-the "online" light doesn't come on,
> but the "fault" light does. It seems to have trouble
> spinning up. So, loading an OS is out of the question
> for a while. Is it possible to at least run some tests
> and have it output diagnostics to one of the BACI cards?
I suspect it depends on what loader ROMs are installed in the
computer. There is a loader ROM that supports booting from
cartridge tape drives in an attached 264X terminal.
In the meantime, I've keyed in the sample program from the manual (at
the end of this message). Turning it into executable code and loading
that into the 1000E is left as an exercise for the reader, at least
'til I find time to figure out how to do that sort of thing. Others
who know are welcome to chime in!
> There is a sheet of paper glued to the front panel with instructions
> on how to reboot the system; it says to load the S/s register
> with ones in bits 15,14,9, and 6, then hit the store, preset,
> some other button, then preset again and finally the run button.
Unfortunately, most of the 21xx documentation I have here at home
right now is for 2100s, not 21MXs (which are a whole lot closer to
1000s), so I'm just guessing as to what that tells the machine to do,
but I expect it's instructions for selecting a given loader ROM (and
maybe device) and starting the boot.
So...I'll try to keep this in mind for the next foray into storage.
What I probably need to look for is the 21MX or 1000 E-Series
operating and reference manual, instead of the installation and
service manual that I have in front of me.
--- cut here ---
ASMB,A,B,L,T
ORG 100B
*
****12966 SAMPLE PROGRAM*************************
*THE PROGRAM BEGINS BY CLEARING ALL ADDRESSES OF THE
*SPECIAL CHARACTER RAM TO ZEROS.THE 12966 THEN IS
*ENABLED TO RECEIVE MODE,1200 BAUD.THE USER ENTERS A
*MINIMUM OF 64 CHARACTERS FROM THE TERMINAL KEYBOARD
*(HP2640 OR SIMILAR TERMINAL). WHEN BUFFER HALF FULL
*(64 CHARS.) IS DETECTED,THE CHARS. ARE TRANSFER FROM
*THE FIFO BUFFER OF THE 12966 TO THE CPU. WHEN THIS
*TRANSFER IS COMPLETE THE CPU HALTS (HLT 01).THE USER
*PRESSES 'PRESET' & 'RUN', THE 12966 GOES INTO THE
*TRANSMIT MODE. THE CPU BUFFER (64 CHARS.) IS SENT TO
*THE 12966 FIFO BUFFER. WHEN THIS TRANSFER IS COMPLETED
*THE 12966 TRANSMITS TO THE TERMINAL UNTIL BUFFER EMPTY
*STATUS FLAG SETS. THE CPU NOW HALTS (HLT 02),PRESSING
*'RUN' RESETARTS THE PROGRAM.
*
*
A EQU 0
B EQU 1
SCT EQU 12B 12966 IS IN SELECT CODE 12B
SAVA BSS 1
SAVB BSS 1
COUNT BSS 1
SIZE DEC 64 64 CHARACTERS
BHF OCT 1000
CW3 OCT 030023
CW4R OCT 040011
CW4T OCT 140411
CW5 OCT 050077
CW6 OCT 060000
PAT OCT 777
DAB. DEF DAB
CLEAR OCT 060400
ORG 1000B
DAB BSS 400
*
*
ORG 200B
START LDA CW4T MASTER RESET,INITIALIZE TRANSMIT
OTA SCT
LDA CW6 CLEAR OUT SPECIAL CHAR RAM
R1 OTA SCT
INA
CPA CLEAR CHECK IF SPECIAL CHAR RAM IS CLEAR
RSS YES IT IS,CONTINUE WITH PROGRAM
JMP R1 NO IT ISN'T,CONTINUE CLEARING
OVER LDA SIZE SETUP AND INITIALIZE CHAR COUNTER
CMA,INA 2'S COMP.
STA COUNT
LDA CW5 LOAD WORD 5,CLEAR FLAGS
OTA SCT
LDA CW3 LOAD WORD 3,1 STOP BIT,8 DATA BITS
OTA SCT ECHO ON,NO PARITY
LDA CW4R LOAD WORD 4,RECEIVE MODE,1200 BAUD
OTA SCT
CHECK STC SCT,C SET CONTROL 12966
SFS SCT CHECK IF STATUS FLAG SET
JMP *-1 NO,NONE IS SET,CONTINUE
CLC SCT YES,FLAG HAS SET
LIA SCT GET STATUS WORD
AND BHF CHECK FOR BUFFER HALF FULL
SZA,RSS
JMP CHECK BHF NOT SET AS YET
LDA CW5 BHF SET,CLEAR STATUS FLAGS
OTA SCT
LDB DAB. SETUP CPU BUFFER ADDRESS
STC SCT,C SET CONTROL 12966
T1 LIA SCT GET A CHARACTER FROM FIFO
AND PAT MASK OUT UNWANTED BITS
STA B,I STORE CHAR INTO CPU BUFFER
INB
ISZ COUNT INCREMENT COUNT,COUNT=64?
JMP T1 NO,GET NEXT CHARACTER
HLT 01 YES,CPU BUFFER IS FULL
***PRESS 'PRESET' AND 'RUN' TO PUT 12966 INTO TRANSMIT
*MODE.
*
NOP
LDA CW4T SETUP 12966 TO TRANSMIT @1200 BAUD
OTA SCT
LDA CW5 CLEAR BUFFERS
OTA SCT
LDA SIZE SETUP CHAR COUNTER
CMA,INA 2'S COMP.
STA COUNT
LDB DAB. SETUP BUFFER ADDRESS
STC SCT,C
T2 LDA B,I GET A CHARACTER
OTA SCT PUT IT IN THE FIFO BUFFER
INB
ISZ COUNT INCREMENT COUNT,COUNT=64?
JMP T2 NO GET NEXT CHAR!!!
LDA CW5 YES,LOAD W TO CLEAR BUFF
OTA SCT HALF FULL
STC SCT,C SET CONTROL,START TRANSMIT
SFS SCT IS BUFFER EMPTY?
JMP *-1 NO,CONTINUE SENDING
HLT 02 YES, IT IS EMPTY,HALT CPU!!
JMP START RESTART 12966
END
--- cut here ---
-Frank McConnell
>>2. The Catweasel uses a proprietary, largely undocumented programming
>>interface. My circuitry is entirely open, and I think it's pretty easy
>>to program. (My first hack at acquiring data with the new buffer was
>>dashed off in about half an hour under QBASIC.)
>Thier doc's pretty much stink, or at least did when I got mine!
It sounds like John Wilson has reverse-engineered at least *some* of
their programming interface, though last I heard there were parts of
the interface that were a mystery even to him :-).
>>Would it be worth writing up my new floppy disk data buffer so that
>>others could improve on it? Would anyone be interested in unstuffed and/or
>>stuffed PCB's? Should I give it a name? (The "Timweasel", anyone? I
>>gotta think of a better name!)
>Maybe/probably.
It looks like my circuit can be put on roughly a 3" x 4" PCB, meaning
that after paying for ExpressPCB overhead it'll be maybe $20 or so per
PCB in small quantities. The PCB would have a 24-pin header for interfacing
to a PC-clone parallel port (or whatever cabling you want to any other sort
of parallel type port on another hardware platform), and 34-pin and 50-pin
headers to hook to 3.5", 5.25", and 8" disk drives. I haven't priced
the chip costs, but they'll probably total around $25 or so from a hobby
place like Jameco or from a real distributor like Digi-Key.
Chip lineup in my current design:
1 62C1024 128K*8 SRAM.
1 74HCT373 for latching control signals from parallel port, 3 of
the outputs are used to drive the head load and step/direction
lines to the floppy drive.
8 MHz crystal clock.
1 74HCT74 for bi-phase clock generation and pulse synchronization from
the floppy read line
2 74HCT175's to make a seven-stage ring counter. Only 3 phase outputs are
used, one to latch and increment the counters, one to latch the
outputs of the shift register, and one to do the write enable.
1 74HCT164 for taking serial data from the 74HCT74 pulse synchronizer
and turning it into 7-bit wide parallel out.
(The 8th bit comes from the index line).
1 74HCT374 for latching the shift register data and tri-stating it onto
the memory buffer bus.
1 74HCT04 and 1 74HCT00 for gating and inverting as necessary
2 74HCT590's and 1 74HCT93 for making a 20-bit buffer address counter.
(17 bits are used in the current implementation, though
we obviously could just drop in a bigger SRAM and use
the extra address bits.)
I took some pains in my design to allow things to be sped up for more
oversampling at a later date. (I'd probably want to replace the 74HCT93
with a third 74HCT590 just to make all the address counters fully
synchronous, but I only had 2 HCT590's in my junk box when I built this
implementation). The timing from the ring counter and the
rest of the HCT logic ought to make sampling up to 40 MHz very straightforward
(I'd have to lengthen the write-enable from the ring counter at higher
clock speeds to cover a couple of clock phases).
> It would be nice to stuff one in a Linux box, or will it
>work in an Alpha under VMS :^)
Anything with a bidirectional parallel port oughta work fine.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
>The only problem I'd point out is the the 9500 series CPLD's drive only 8 mA
>per output and, unless you were planning to pair them up, i.e. use multiple
>pins tied together to drive the FD cable, you might have problems.
The biggest problem is with the outputs that'll drive the floppy disk bus.
Typically it's an open-collector output terminated to +5V with 150 ohms, so
you have to be able to sink 30 mA or so. So yes, this may be a concern.
(Or you can cheat and tie the lines high with "only" 220 or 300 or 470 ohms -
shouldn't be a big problem as long as there's only one drive on the bus.)
Do any CPLD's have "real" open-collector outputs, or can you fake it by
sending the output into tristate mode? (I'm asking this as a guy who's
never designed with CPLD's but does know 74XX00 series logic pretty
well.) I don't think it's an issue either way with exactly one controller
and one floppy drive on the bus.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927