test-drb

test-drb@ccmp.vtda.org

101090 discussions

by rtomek＠ceti.pl

Folks, Merry Christmas and Happy New Year, thanks for all interesting reading matter and let there be plenty of interesting stuff to read about in a future, too. :-) -- Regards, Tomasz Rola -- ** A C programmer asked whether computer had Buddha's nature. ** ** As the answer, master did "rm -rif" on the programmer's home ** ** directory. And then the C programmer became enlightened... ** ** ** ** Tomasz Rola mailto:tomasz_rola at bigfoot.com **

7 years, 8 months

Merry Christmas (Tom Manos)

by c.murray.mccullough＠gmail.com

I hope everyone is having a wonderful Christmas and may the New Year bring all your computing wishes true. Happy computing all!

7 years, 8 months

How to convert CGA video to HDMI…

by cctalk＠gtaylor.tnetconsulting.net

If you're into retro computing at all, and want to see how to hook old computers up to new HDMI monitors, then check out @craig1black's new video on doing exactly that. Link - How to convert CGA video to HDMI for around $65 - https://www.youtube.com/watch?v=HpfrelhokKQ I find this quite impressive and will likely have to look into this further. -- Grant. . . . unix || die

7 years, 8 months

Newbie Punch Tape Questions

by info＠cvmakerspace.ca

Ok - not so much of a newbie - fed punch tape into a reader for a PDP8 when I attended tech school back when the earth was cooling .... I have my hands on a PDP8a and a Remex reader. They both seem to function OK with basic tests. I would like to try to read a Mylar punch tape to see if there is anything interesting on it - as well as a couple of paper tapes. My end run would be to show something useful running on the PDP8a - and loaded with the punch tape. The Mylar reel would have been the programming for a CNC machine. I suspect the first part of the reel may be some boot loader or init routine. So, my thought is this - connect the Remex unit to a Pi or Arduino to capture the data and have a look at it or, load the tape directly into the PDP8 and see what happens? Then, examine the PDP8 memory locations. So, the issue is that I have not researched the proper way to get the tape and PDP8 initialized and reading into the PDP8. I am not 100% sure the Remex unit is working, other than it spins the reels. Any suggestions?? Love the forum by the way - I wish I had a machine that would slow the clock on the wall down to give me more time to play. I guess they call that retirement ..... Cheers, Brian -- Brian McIntosh Columbia Valley Maker Space Communications Guy info at cvmakerspace.ca 250 270 0689

7 years, 8 months

Another weird paper tape

by kylevowen＠gmail.com

I have another paper tape...this time, it's 7-channel. I dumped it and found that it has very, very little data on it. Tape image here: https://drive.google.com/open?id=1kCiSiNuPvAPzBG0XCqBJiBoPhjmyvU21 Here's some of the first of the tape. 0000000 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 * 0000380 a0 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 0000390 80 80 a0 80 80 80 80 80 80 80 80 80 80 80 80 80 00003a0 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 * 00003d0 80 80 80 80 80 80 80 80 80 80 a0 80 80 80 80 80 00003e0 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 * 0000430 80 80 80 80 88 80 80 80 80 80 80 80 80 80 80 80 0000440 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 * 0000ca0 80 80 80 80 81 81 80 80 80 80 80 80 80 80 80 80 0000cb0 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 * 00010d0 80 80 80 80 80 80 80 80 80 80 80 80 81 81 80 80 00010e0 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 * 0001100 81 81 80 80 80 80 80 80 80 80 80 80 80 80 80 80 0001110 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 0001120 80 80 80 80 81 81 80 80 80 80 80 80 80 80 80 80 0001130 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 0001140 80 80 80 80 80 80 80 80 81 81 80 80 80 80 80 80 0001150 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 0001160 80 80 80 80 80 80 80 80 80 80 80 80 81 81 80 80 0001170 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 The tape is dated 22 October 1958. Any ideas what this could have been used for? The 8th channel is set since I read this on an 8-channel reader. Thanks, Kyle

7 years, 8 months

Speaking of paper tape...

by jfehlinger＠comcast.net

Does anybody here recognize the manufacturer of this gear, presumably some kind of punched paper tape equipment? Second to the last image at: http://www.tapeheads.net/showthread.php?t=15284&highlight=movies&page=10 I recently had the chance to play with a Blu-Ray transfer of the old gothic sci-fi TV show _The Outer Limits_ (the original 1963-64 series), and some of the 50s magnetic tape equipment used as recurring props can be identified -- e.g., an Ampex FR200 data recorder, Magnecord and Roberts audio tape recorders, and even a pair of old Univac Uniservo I tape drives in one episode. But that twin paper-tape device (if that's what it is), which occurs in the background of a number of first-season episodes, remains a mystery. The lower reels (if there are any) seem to be out of sight in the lower part of the cabinet in all shots of the device, and there seems to be a continuous loop of paper tape threaded around the tape guides and back up to the upper reel (which is actually spinning in at least one episode). Anybody know what this might be?

7 years, 8 months

flashx20 - Floppy and screen for the Epson HX-20

by norbert_kehrer＠yahoo.de

Hi, the Epson HX-20 handheld computer offered an interesting way to connect it with peripheral devices. The serial port at the back of the computer can talk to external hardware using an Epson-specific protocol for data exchange. As this protocol is quite well documented, I wrote a little program called "flashx20" (for FLoppy And Screen for the HX-20), which allows to connect a normal Windows PC or notebook computer to the HX-20, where the PC interprets the Epson serial protocol and simulates an external display controller and four external floppy disk drives (like e.g. the Epson TF-20). With that, you get a big screen (the PC monitor) and disk space for programs and data on the PC's hard disk, which can then also be used for data and program exchange. You can read more about it and download the program from my website at http://members.aon.at/nkehrer/ Norbert

7 years, 8 months

by couryhouse＠aol.com

wanted any and all XSCRIBE closed caption related and steno typer key board related ... docs... parts.. units building up an working analog CC demo chain for display in our Deaf and Hard of Hearing assisting tech area. will consider othe brand gear to if even just for static display too.... Interested in ad materials photos, war stories. etc etc thanks. Ed Sharpe Sent from AOL Mobile Mail

7 years, 8 months

Unknown paper tape format

by kylevowen＠gmail.com

I found a spool of mylar tape dated 23 March 1972, with "EARS" on it; best I can tell, this was for the Experimental Array Radar System. Image can be found here: https://drive.google.com/open?id=11VKKklor1QDyWCz0b3zVNj_I_vmt4oN4 Anyone have any clue as to the format? Here's the beginning of the tape: 0000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 * 0000060 00 00 00 00 00 00 00 00 00 00 00 40 40 40 08 e5 0000070 43 c1 40 5b 43 c1 40 dc 43 c1 40 5d 43 c1 40 5e 0000080 43 c1 40 df 43 c1 40 e0 43 c1 40 61 43 c1 40 62 0000090 43 c1 40 e3 43 c1 40 64 43 c1 40 f1 c2 c1 40 f2 00000a0 c2 c1 40 73 c2 c1 40 f4 c2 c1 40 75 c2 c1 40 f7 00000b0 c2 c1 40 45 43 c1 40 46 43 c1 40 c7 43 c1 40 c8 00000c0 43 c1 40 49 43 c1 40 4a 43 c1 40 4c 43 c1 40 cb 00000d0 43 c1 40 d5 43 c1 40 d6 43 c1 40 4a 40 c1 40 cd 00000e0 40 c1 40 cb 40 c1 40 7f e0 c1 40 f2 45 c2 40 57 00000f0 43 c1 40 58 43 c1 40 d9 43 c1 40 da 43 c1 40 6e and the end: 0006400 45 c2 40 57 4c c1 40 5e 4c c1 40 f4 cb c1 40 e5 0006410 4c c1 40 fb cb c1 40 ec 4c c1 40 e0 7f 7f 40 40 0006420 40 c7 40 73 4c c1 40 7a 4c c1 40 c7 40 40 40 da 0006430 c8 c2 40 ef 57 c1 40 c1 cd c1 40 46 d0 d0 40 79 0006440 cd c1 40 d5 57 c1 40 4f cd c1 40 5d cd c1 40 c2 0006450 4c c1 40 6b cd c1 40 c8 cd c1 40 58 cb c1 40 df 0006460 cb c1 40 e6 cb c1 40 f2 cd c1 40 46 40 40 40 cd 0006470 40 40 40 4c 40 40 40 d5 d6 c1 40 d5 61 c1 40 40 0006480 61 c1 40 fb d3 c2 40 c7 ce c1 40 7f 57 c1 40 c2 0006490 cb c1 40 49 40 40 40 e3 d6 c1 40 f2 d6 c1 40 58 00064a0 57 c2 40 76 d9 c2 40 40 40 40 08 07 80 80 80 00 00064b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 * 0006600 00 00 00 00 00 00 Would love to know what computer system this was running on. Thanks! Kyle

7 years, 8 months

Origin of 'Straight 8' name

by jnc＠mercury.lcs.mit.edu

> From: Al Kossow > "Straight-8" seems to be a fairly modern name coming from collectors My _guess_ is that that probably happened because there is no formal 'model' for that first one (unlike the first -11, which got re-named the -11/20 BITD), and people recently picked that to disambiguate them from all the other -8's. But what I _don't_ know is _why_ that particular name? I was hoping some -8 collector knew... Noel

7 years, 8 months

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