test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jnc＠mercury.lcs.mit.edu

So, as part of the work on getting our QSIC card to support SD cards for storage, Dave and I have produced some tools that people might find useful. Dave's original concept was to do SD support with a state machine. However, the SD protocol turned out to be a little too complex for that, so we decided to create a bespoke micro-engine (hereinafter 'uengine' - I use 'u' in place of the lower-case 'mu' all the time) to handle it. This turned out to be a good call; Dave cranked out a uengine in Verilog (which was incredibly quick to produce), and I whipped up (literally - the first version was done overnight) a uassembler. The latter has since been much improved; the current version reads the entire definition of the uengine >from a configuration file, and thus should be usable on any umachine. So, if you need a uassembler for some project, here's one. (And if you need something it can't do, let me know, and I can add stuff; e.g. it doesn't currently support the '+' operator in literals, only '|', but it would be fairly simple to add '+' if anyone had a use for it.) The source is here: http://ana-3.lcs.mit.edu/~jnc/tech/QSIC/tools/uas.c (and no, I don't have the energy to learn how to use sourceforge or github to distribute it, so don't bug me about it). I wrote it under Cygwin on Windows, but Dave compiled and runs it on Linux as-is, so it's pretty portable. The current output format is hex that Dave massages into 'ROM' contents on the FPGA in some fashion I don't know the details of, but if anyone needs something different, again, I'd be happy to add whatever's needed. The source syntax supported is documented in comments at the start of the uassembler source; it's pretty simple, here's a brief synopsis (see the file for more detail). ucode is a collection of lines, one per micro-instruction. The syntax for individual lines is: {<label>:} <operator>{, <operator>}... {<literal>} <operator> can be either: <value> (symbolic) or <field>=<fvalue> (where fvalue can be symbolic or numeric); specific symbolic values are assigned by the configuration file (where they are defined) to specific fields. <literal> is <data>{|<data>}... where <data> is symbolic (a label, or a value) or numeric. Forward references to labels are supported. Numeric items (everywhere) are either octal, decimal or hex. Whitespace (either space(s) or tab(s)) can be used in most places. Comments start with a ';' or '/', and the rest of the line is ignored. A sample umachine configuration file (for the QSIC uengine) is here: http://ana-3.lcs.mit.edu/~jnc/tech/QSIC/tools/ueng and the (simple) format of the config file is documented in the comments at the start. A sample source file for uas for that uengine is here: http://ana-3.lcs.mit.edu/~jnc/tech/QSIC/sd.asm if you want to see what source looks like. Dave has a github site where all his stuff is available; the latest version of the ucode is here: https://github.com/dabridgham/QSIC/blob/master/verilog/sd.asm and the whole thing is here: https://github.com/dabridgham/QSIC including the Verilog for the uengine. Dave reports that it should be easy to adapt his uengine design to other uses, it should run in pretty much any FPGA. So if you want to build a PDP-15 (or a Multics! :-) in an FPGA, there you go. Dave indicates he'd be happy to help anyone who needs to tweak the uengine design for their particular application. Hopefully someone will find this useful! Noel

8 years, 2 months

Parts for old RS/6000's

by BHuntsman＠mail2.cu-portland.edu

Anyone on here have any old RS/6000 parts? I have an old C10 I'm trying to beef up a bit for a project. I'm after the following (pardon the lame table): FC FRU Qty Desc 3033 74G8824 2 2.2GB SCSI-2 Fast/Wide Disk Drive 4012 9H5583 8 32MB SIMM Memory 4224 02G7431 1 Ethernet 10BaseT Transceiver 3107 31G4126 1 Serial Port Converter Cable D/T 7008,7009 51G7737 1 System Unit SCSI Terminator Also interested in some MCA blanks, if anyone has some extras lying around. Thanks!

8 years, 2 months

Sun 3/50 processor board and unknown processor

by chd＠chdickman.com

I was given two boards that were "spares for a PDP-11/40." The business that I got my PDP-11/40 from was cleaning out storage and found these two boards and gave them to me. It looks like board 2 is for a Sun 3/50 workstation. Board 1 is some kind of micro-programmed processor based on AM29331 and AM29331. There are also some Analog Devices DSPs. AM29000 based processor with Analog Device DSPs http://www.chdickman.com/board1.jpg Sun 3/50 processor http://www.chdickman.com/board2.jpg Can anyone identify them? -chuck

8 years, 2 months

what is this NCR modem? what did it go to?

by Flash688＠flying-disk.com

COURYHOUSE at aol.com wrote: > what is this NCR modem? what did it go to? > > NEW Vintage 1971 NCR Acoustic Coupler Modem, NOS, Factory Boxed, C260-400 > / F01 132411929563 on the bay It is a Bell 103A compatible modem (110 or 300 baud) used with the NCR 260 series of thermal printing terminals. The 260 came in several variants: -1 (receive only), -2 (keyboard send/receive), -6 (Automatic (cassette tape) send/receive). I worked with them at NCR in 1973 and 74. I still have the manuals, and just a few days ago scanned them for Bitsavers. If you need a copy I can send you the raw TIFF files (one per page). Both the -400 and -500 were EIA I/O to the terminal. The C260-400 connected to a Bell System DAA (Data Access Arrangement), while the C260-500 was an acoustic coupler. The acoustic coupler had a solenoid that would would automatically raise and lower the handset on the telephone! Back in those days you could not connect anything directly to the telephone lines -- you had to use the telco-supplied DAA (kaching!) or an acoustic coupler. I don't know if this modem can be connected directly to a phone line without a DAA. I think the asking price is totally unrealistic unless you are a rabid collector of NCR gear. Alan Frisbie

8 years, 2 months

what is this NCR modem? what did it go to?

by COURYHOUSE＠aol.com

OK! Shades of the crown answering machine we have in the museum with the handset lifter! Yea the price is defiantly a barrier on this except for Paul Allen I suppose. Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 11/27/2017 12:16:16 P.M. US Mountain Standard Tim, cctalk at classiccmp.org writes: COURYHOUSE at aol.com wrote: > what is this NCR modem? what did it go to? > > NEW Vintage 1971 NCR Acoustic Coupler Modem, NOS, Factory Boxed, C260-400 > / F01 132411929563 on the bay It is a Bell 103A compatible modem (110 or 300 baud) used with the NCR 260 series of thermal printing terminals. The 260 came in several variants: -1 (receive only), -2 (keyboard send/receive), -6 (Automatic (cassette tape) send/receive). I worked with them at NCR in 1973 and 74. I still have the manuals, and just a few days ago scanned them for Bitsavers. If you need a copy I can send you the raw TIFF files (one per page). Both the -400 and -500 were EIA I/O to the terminal. The C260-400 connected to a Bell System DAA (Data Access Arrangement), while the C260-500 was an acoustic coupler. The acoustic coupler had a solenoid that would would automatically raise and lower the handset on the telephone! Back in those days you could not connect anything directly to the telephone lines -- you had to use the telco-supplied DAA (kaching!) or an acoustic coupler. I don't know if this modem can be connected directly to a phone line without a DAA. I think the asking price is totally unrealistic unless you are a rabid collector of NCR gear. Alan Frisbie

8 years, 2 months

what is this NCR modem? what did it go to?

by COURYHOUSE＠aol.com

thanks for dates. yes that all makes sense. some how my mind slipped a decade. I a looking for a GE Diginet tdm-114 acoustic coupler. 2 reasons, GE computer related but also my first acoustic coupler I had with an ASR-35 teletype I am also looking for the top mental plate that covers an ASR-35 punch also. ( drop me a line off list if you have either you want to sell/trade/?) thanks ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 11/26/2017 3:38:36 P.M. US Mountain Standard Time, cctalk at classiccmp.org writes: On Sun, 26 Nov 2017, COURYHOUSE at aol.com wrote: > does the 71 sate seem early? No, a 1971 date does not seem too early. The price seems steep, even for a "relatively" early modem. Bell 103 (300bps) dates from 1962. The Bell 101 (110 baud) was 1958. SCROTUS "Carterfone" was 1968 (ruling permitting direct connect) Bell 212A (1200bps) came out in 1976. The Livermore Data Systems modems that I sold off were from about 1964? 1970-1972, when I was working at Goddard Space Flight Center (Bldg 26, "National Space Sciences Data Center"), we used a time-sharing system for APL. APL type ball on Selectric terminal. Yes, 1971 is prior to most mass-marketed "personal computers" (1978?: Apple, PET, TRS80). But there were teminals.

8 years, 2 months

VCF Pacific Northwest (Feb 2018): Last call for Exhibitors and Speakers

by mbbrutman＠brutman.com

Where: Living Computers: Museums+Labs (Seattle, WA, USA) When: February 10th and 11th, 2018 Registration deadline: December 10th, 2017 (About 2 weeks left) We have about 15 registered exhibitors now. We are looking for a few more to fill things out and to ensure that if somebody drops out that the show doesn't look too thin. The exhibits span a wide range so it won't be a pure 8 bit gaming or a DEC heavy iron show. If you are procrastinating about being an exhibitor then it is time to register ... If I can answer questions to help you decide then email me. This is our first time in Seattle; the bar is low so don't be too worried about having the perfect exhibit. We are still looking for speakers too; the floor is pretty open. If you did something cool during your career or just want to share aspects of the hobby with others, this is a great place to do it. (I especially enjoyed Lyle's talk on repair and restoration at VCF West.) Interested or know somebody who is? Check out at http://vcfed.org/wp/festivals/vintage-computer-festival-pacific-northwest/ . Please email me directly if you have questions or need encouragement. Regards, Mike Brutman michael at vcfed.org

8 years, 2 months

what is this NCR modem? what did it go to?

by COURYHOUSE＠aol.com

what is this NCR modem? what did it go to? NEW Vintage 1971 NCR Acoustic Coupler Modem, NOS, Factory Boxed, C260-400 / F01 132411929563 on the bay not mine etc etc etc ed#

8 years, 2 months

FFS: Kennedy 9100 Op/Maint Manual

by silent700＠gmail.com

This one is already on Bitsavers but if you'd like a nice original copy with the fold-out schematics and color cover, I'll send it to you for the cost of shipping from 60070. The manual is in fairly good shape, bent a bit near the spine and the glue is starting to crack. Still an essential display accessory for your 9-track. -j

8 years, 2 months

Western Peripherals docs scanned

by silent700＠gmail.com

I've never even heard of this company. Three tape drive manuals scanned and posted, two that weren't on bitsavers and one that is a newer version: http://chiclassiccomp.org/docs/index.php?dir=%2Fcomputing/WesternPeripherals Enjoy. -j

8 years, 2 months

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