test-drb June 2008

test-drb@ccmp.vtda.org

194 participants
304 discussions

by evan＠snarc.net

>>>http://www.brielcomputers.com/replica1.html That's been around for a few years. Catch up on your list messages from 2005. :)

16 years, 6 months

Apple I back up on ebay

by tiggerlasv＠aim.com

. . . . and, it has sold, for about $2000 . . . <Thud> (That was me passing out, from disbelief.) T

16 years, 6 months

NEC D7220AD datasheet wanted

by sethm＠loomcom.com

Folks, Does anyone have a NEC 7220 datasheet? I was just given two of these chips (D7220AD, 1986 datecodes), and was interested in tinkering with them. I have no earthly idea what the specs are, though, other than "graphics controller". -Seth

16 years, 6 months

RGB to VGA converter, your posting at classiccmp.org/pipermail/cctech/2005-March/041987.html

by giidii＠gmail.com

Hello, would your circuit work for RGsB to VGA, 1280x1024 resolution, to connect an old digital workstation to a TFT? thank you! best regards Gunter

16 years, 6 months

NEC D7220AD datasheet wanted

by dm561＠torfree.net

---------ORIGINAL MESSAGE: Date: Fri, 20 Jun 2008 09:32:24 -0400 From: Steve Stutman <steve at radiorobots.com> Subject: Re: NEC D7220AD datasheet wanted Seth Morabito wrote: > Folks, > > Does anyone have a NEC 7220 datasheet? I was just given two of these > chips (D7220AD, 1986 datecodes), and was interested in tinkering with > them. I have no earthly idea what the specs are, though, other than > "graphics controller". > > -Seth > Used these once in a Nav product. If you do not find data on Net, let me know. Believe I still have the book. Steve -------------REPLY: I also have it in Vol.2 of the 1987 NEC Microcomputer Products Data Book. It's 28 pages; unforch I don't have a scanner set up at the moment, but if there's no other source... mike

16 years, 6 months

NEC D7220AD datasheet wanted

by fjkraan＠xs4all.nl

cctech-request at classiccmp.org wrote: > Folks, > > Does anyone have a NEC 7220 datasheet? I was just given two of these > chips (D7220AD, 1986 datecodes), and was interested in tinkering with > them. I have no earthly idea what the specs are, though, other than > "graphics controller". > http://electrickery.xs4all.nl/comp/qx10/doc/nec7220.pdf or http://oldcomputers.dyndns.org/public/pub/rechner/epson/~fjkraan/comp/qx10/… > -Seth > > Fred Jan

16 years, 6 months

NEC D7220AD datasheet wanted

by cclist＠sydex.com

> Date: Fri, 20 Jun 2008 08:14:06 -0600 > From: "maurice smulders" > Make sure you google for uPD7220 (that's the NEC prefix) You can also look for the Intel 82720, which is the Intel-packaged version of the same chip. Both are on the web and the text for the datasheets and programming manual is essentially identical. Cheers, Chuck

16 years, 6 months

Earl(y|iest) recording of computer music

by roger.holmes＠microspot.co.uk

> Message: 28 > Date: Thu, 19 Jun 2008 21:41:57 -0500 > From: Jim Leonard <trixter at oldskool.org> > Sellam Ismail wrote: >> This is very cool: >> >> http://news.bbc.co.uk/2/hi/technology/7458479.stm > > Unfortunately, no mention of how the machine produced the sound... I expect it was the same as slightly later mainframes, every time a conditional jump instruction actually jumps, it flips the speaker to the opposite state. When single shotting a program this is useful as you can hear a click and know to not carry on down the list of instructions, and when a program is running you can hear the tone change as it does different tasks (because the size of the loops are different). My 1301 has a three of four instruction program which uses the variable delay of the multiply instruction to make a ghostly sound.

16 years, 6 months

Earl(y|iest) recording of computer music

by sellam＠vintagetech.com

This is very cool: http://news.bbc.co.uk/2/hi/technology/7458479.stm -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

16 years, 6 months

Low Cost EPROM programmer (Ben, this is for you)

by lynchaj＠yahoo.com

Ben, if you need a low cost EPROM programmer just go get yourself a junk PC (practically free) and for $20 on Ebay Buy-It-Now (or less if you are patient), get a Willem Programmer. Here is a link: http://search.ebay.com/willem-programmer_W0QQfromZR40QQfsooZ1QQfsopZ34QQsbrs rtZd Decent EPROM programmers are so cheap now as to be hardly an issue. These are super simple to use and practically disposable. They are amazingly durable and useful. They won't work with first generation EPROMs but anything 2716 or later is good. 2816s should be no problem. Good luck with your project. Andrew Lynch

16 years, 6 months

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test-drb June 2008