test-drb July 2000

test-drb@ccmp.vtda.org

155 participants
521 discussions

by rigdonj＠intellistar.net

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.

25 years

Cipher Streamer / DEC TS05 Tape Drive

by CLASSICCMP＠trailing-edge.com

>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

25 years

Cipher Streamer / DEC TS05 Tape Drive

by dhquebbeman＠theestopinalgroup.com

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

25 years

Great Finds

by dhquebbeman＠theestopinalgroup.com

> 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

25 years

Looking for....

by LFessen106＠aol.com

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.

25 years

HP Tape drive

by steverob＠hotoffice.com

> > 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>

25 years

TRS items taken - Re: newbie intro

by aclark＠envirolink.org

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

25 years

New find: HP 1000 E series

by fmc＠reanimators.org

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

25 years

Tim's own version of the Catweasel/Compaticard/whatever

by CLASSICCMP＠trailing-edge.com

>>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

25 years

Tim's own version of the Catweasel/Compaticard/whatever

by CLASSICCMP＠trailing-edge.com

>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

25 years

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test-drb July 2000