test-drb

test-drb@ccmp.vtda.org

101090 discussions

by LYNCHAJ＠YAHOO.COM

Hi, If there are any builders who would like to participate in the MC68040 SBC project please let me know. We are working on an intermediate project at the moment based on the MC68360 which is the integrating glue for the MC68040 SBC. The MC68360 is the all-important piece that has to work well before even considering the MC68040 CPU since it is a standalone processor by itself. There are some spare MC68360 P1 PCBs remaining (see the excerpted status update below) and the basic board seems to be working. It is booting from the ROM and partially initializing. More work is underway to further initialize the MC68360 chip subsystems like timers, UARTs, etc. The plan is to integrate a Propeller based IO subsystem (VGA display, PS/2 keyboard, microSD mass storage), DRAM, and Flash memories to the final SBC. This is an ambitious project and will take quite a bit of time so if there are any experienced MC68040/MC68360 builders that would like to contribute your help would be greatly appreciated. Additional information is posted below. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=68040%20SBC http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=MC68360%20P1 Similar to other N8VEM home brew computing project boards these are free/open source designs including hardware, software, and other related information. Please contact me at LYNCHAJ at YAHOO.COM if interested. Thanks and have a nice day! Andrew Lynch -----Original Message----- [snip] To: Andrew Lynch Subject: Re: 68360 - status Hi Andrew! I have made quite a bit of progress - if you look at the steps on 9-13 through 9-16 of the User Manual I am at step 11 so I only have a few steps left. [snip] BTW - I have I think 4 extra boards (the other place sent me boards anyways) so if people want to join in the fun, I can forward you the boards. We are also going to have to chat on how we proceed from here - looking at the stuff Alan sent and other errata - the 68040 is not going to be a "glue less" implementation and will require some GALS or a CPLD. [snip]

13 years, 3 months

SCSI to IDE/SD bridge board project

by LYNCHAJ＠YAHOO.COM

Hi Recently there has been a bit of renewed interest and an uptick in activity in the N8VEM SCSI to IDE/SD bridge board project. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=SCSI%20to%20ID E%2FSD%20prototypes> &param=SCSI%20to%20IDE%2FSD%20prototypes There are still some prototype boards available in case anyone would like to help bring this project to completion. The prototype boards do work in that they are booting the debug monitor (Zapple) and the IO subsystems are checking out. What we need is the programming to make the Z53C80 SCSI controller work in target mode with the SCSI host mode controller. This board project will be free/open source with software, hardware, and other design information posted to the public. Please contact me if you are interested in helping out at LYNCHAJ at YAHOO.COM I realize there are many ways to accomplish this task and the Z80 based embedded controller board is but one. There may be other valid approaches however none are free/open source projects AFAIK. Please post a link if I am mistaken. Any lessons learned and/or design information from this project could be readily applied to a follow-on project potentially using different technologies. However I think it is important to get this first step working before moving on to another design. I am willing to support a follow-on design once we get this one working properly. I believe with a quick Z80 (8 MHz or greater) there should be sufficient through put for most SCSI-1 applications. It will never be a "speed demon" but the older vintage/classic/hobbyist SCSI-1 machines probably don't need one either. Many of the aging SCSI-1 machines are going to go "offline" forever if the supply of SCSI-1 drives dries up. Thanks in advance for your consideration. Have a nice day! Andrew Lynch

13 years, 3 months

3.25 alingment?

by pinball＠telus.net

Looking to test/service/align a number (10 or so) of double-sided double-density 3.25 floppy drives and hoping there is someone here in Canada who has the alignment discs that I could borrow/buy. These are for setting up some of my older computerized microprocessor test gear (Fluke mostly)... Suggestions on aligning are also greatly appreciated! Thanks! John :-#)#

13 years, 3 months

older Yamaha keyboards

by rampaginggreenhulk＠yahoo.com

are they component level repairable, that is, are the individual chips readily available? Something tells me not likely.

13 years, 3 months

Bootdisk for Vector graphics MZ wanted...

by jdr_use＠bluewin.ch

Since I don't have hardsectored floppies, I would hope that someone here could help out ? I am located in Switzerland,costs will be covered . Jos Dreesen

13 years, 3 months

Bootdisk for Vector graphics MZ wanted...

by jos.dreesen＠bluewin.ch

Since I don't have hardsectored floppies, I would hope that someone here could help out ? I am located in Switzerland,costs will be covered . Jos Dreesen

13 years, 3 months

N8VEM and S100computers.com S-100 board status

by LYNCHAJ＠YAHOO.COM

Hi A quick status of N8VEM and S100computers.com S-100 board PCB New S-100 LAVA PCBs are on their way and should be here in a week or less. http://s100computers.com/My%20System%20Pages/Lava-10%20Board/LAVA-10%20Board .htm Reordered respin S-100 Console IO PCBs should be here in mid to late Jan 2013 http://s100computers.com/My%20System%20Pages/Console%20IO%20Board/Console%20 IO%20Board.htm Reordered S-100 regular prototyping boards (just PTH area, no additional circuitry) will be ordered mid-Jan 2013 with estimated delivery early to mid Feb 2013 http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=S-100%20regular %20prototyping%20board Finally, a couple of new S-100 PCBs are in work and my plan is to order them in Feb 2013 starting with the S-100 68K CPU board. Please note the V3 version of the S-100 68K has the chips in horizontal layout and has a completely different appearance than the prototype boards on the webpage. http://s100computers.com/My%20System%20Pages/68000%20Board/68K%20CPU%20Board .htm Immediately followed by the S-100 80286 CPU board (Don't be scared of the prototype board images since the final board has all the fixes and is clean) http://s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%20Boa rd.htm If you are interested in any of the above boards please contact me at LYNCHAJ at YAHOO.COM Please note this is a hobbyist project and purely for entertainment/educational purposes. By getting these PCBs you are participating in their development at the N8VEM home brew computing project. Thanks and have a nice day! Andrew Lynch PS, there are a couple of S-100 board projects that are languishing "on the back burner" and would like any ideas, comments, thoughts, and/or questions as to what to do with them. The S-100 VDP V2 (V9938 and AY-3-8910 color graphics and sound generator) and the S-100 uPD7220 GDC (accelerated graphics VGA monitor compatible - not register compatible - 640x480 or 800x600 at 16 colors - 4 bit planes).

13 years, 3 months

N8VEM multiple ECB board special

by LYNCHAJ＠YAHOO.COM

Hi Things have slowed down a bit on the N8VEM home brew computing project lately. I'd like to clear some boards off the shelf to free up some hobby funds and make room for new projects. To help move things along a bit I am having the first ever multiple ECB board "free shipping special" So far it has been pretty popular. Please see the note on the mini-68000 ECB system though regarding the minimum system. More information here: http://groups.google.com/group/n8vem/browse_thread/thread/f240fa29ece4cfae Thanks and have a nice day! Andrew Lynch

13 years, 3 months

My Commodore VIC-20 on YouTube

by terry＠webweavers.co.nz

My Commodore VIC-20 (and the VIC-20 in general) is discussed in this YouTube video (see link). This will be the last video for a while as I return to work on Monday after the Xmas break (bummer). http://youtu.be/hyHNdAhWVmM Terry (Tez)

13 years, 3 months

Identifying power connector for GRiD laptop

by derschjo＠gmail.com

Hi all -- Picked up an interesting old "laptop" -- a GRiDCase 1537E. This is a Tempest-hardened devicewith (I believe) a 386 processor. Also looks to have an electroluminescent display. Inside there isn't a single exposed wire or circuit board, so any debugging I might need to dowill be a fun prospect. At any rate, I didn't get the AC adapter with this thing and it's got an odd connector that I'm not familiar with. See here: http://yahozna.dyndns.org/scratch/gridcase/1537/power.png The connector's abit over 1cm in diameter with three oddly-spaced pins. I'dlike to build areplacement assuming I can work out the pinouts (and find/fabricate a mating connector). Anyone know anything about this machine?Any ideas where to find such a connector? Thanks, Josh

13 years, 3 months

Early CD-ROMs was: NASA computers circa 1969

by barythrin＠gmail.com

What country/nationality are those names? I'm jealous. They sound straight out of a Tolkien novel. -----Original Message----- From: "Bill Sudbrink" <wh.sudbrink at verizon.net> Sender: cctalk-bounces at classiccmp.orgDate: Fri, 04 Jan 2013 16:49:56 To: 'General Discussion: On-Topic and Off-Topic Posts'<cctalk at classiccmp.org> Reply-To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: RE: Early CD-ROMs was: NASA computers circa 1969 Dave McGuire wrote: > You didn't work for a flaming asshole of epic proportions > who went by the name of "Murf", did you? No, not that I remember. Are you talking about someone at Meridian? I didn't work there, I worked for AIRS (Automated Information Retrieval Systems) back then. The guy I worked for was named Eldon. I collaborated with (over the phone) a a guy named Wink at Meridian. What was his last name? Like the chipmunk guy I think... Seville? We were one of Meridian's first customers on the East Coast. Wink wrote their custom drivers. Before mscdex, before Yellow Book, back in the dark days. Bill S.

13 years, 3 months

8 bit virii

by tshoppa＠wmata.com

geneb writes: > As far as I know, there was never a known instance of a virus on an 8 bit machine. "Elk Cloner" for the Apple II, according to Rich Skrenta went wild in 1982. Was written up very nicely in a Scientific American article in March 1985 (good enough that I wrote a "me too" virus based on the article.) Very similar to what a IBM-PC guy would call "a boot sector virus" (although really there's a little more than that in either the Apple II or PC-clone cases.) It would be interesting if any of the Apple II disk image archives, have Elk Cloner or lookalikes in them. I once thought about automating such a search as an addition over the effort to index the Apple II disk images floating around on the net. Haven't thought of that in, oh, nearly 20 years now!!! Tim.

13 years, 3 months

3.5 alignment? (~~opps, not 3.25!)

by pinball＠telus.net

Looking to test/service/align a number (10 or so) of double-sided double-density 3.5 floppy drives and hoping there is someone here in Canada who has the alignment discs that I could borrow/buy. These are for setting up some of my older computerized microprocessor test gear (Fluke mostly)... Suggestions on aligning are also greatly appreciated! Thanks! John :-#)# -- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out"

13 years, 3 months

NASA computers circa 1969

by dgriffi＠cs.csubak.edu

I just stumbled across a sort of show-and-tell of computers used by NASA in the 1960s. See http://www.youtube.com/watch?v=nrwpXEiTDVk -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

13 years, 3 months

Early CD-ROMs was: NASA computers circa 1969

by mcguire＠neurotica.com

On 01/04/2013 04:49 PM, Bill Sudbrink wrote: >> You didn't work for a flaming asshole of epic proportions >> who went by the name of "Murf", did you? > > No, not that I remember. Are you talking about someone at > Meridian? I didn't work there, I worked for AIRS (Automated > Information Retrieval Systems) back then. The guy I worked > for was named Eldon. I collaborated with (over the phone) a > a guy named Wink at Meridian. What was his last name? Like > the chipmunk guy I think... Seville? We were one of Meridian's > first customers on the East Coast. Wink wrote their custom > drivers. Before mscdex, before Yellow Book, back in the dark > days. Ok, different gang. Fortunately for you. ;) -Dave -- Dave McGuire, AK4HZ New Kensington, PA

13 years, 3 months

Atlantic research 4500 manuals

by hp-fix＠xs4all.nl

I'm looking for the manuals or copies of my Atlantic Research 4500 protocol analyzer. If somebody has a copy for me I would be very happy. -Rik PS. I got a spare unit if anyone wants it, it is a but busted and the tape drive is missing but it seems to work.

13 years, 3 months

Early CD-ROMs was: NASA computers circa 1969

by wh.sudbrink＠verizon.net

Bill Sudbrink wrote: > Shoppa, Tim wrote: > > I'm sure somebody here did it. 5150 with a CM153 card for > > Philips CM100 player? > > Yes. That was the test platform for an early CD-ROM company > I worked for. We also had a Meridian Data CD-Publisher. > It wrote 9-track tapes that we sent to PDO Holland. They > would send us back some count of CDs along with the glass > master. That was what? 1983 or maybe 1984. I had one of > those glass masters in my office for a while but I've lost > it somewhere along the way. > As I think about it, I'm pretty sure I have a CM110 (the SCSI interface version) in a box around here somewhere. Bill S.

13 years, 3 months

An interesting article on text-book vrs real-world programming

by terry＠webweavers.co.nz

Seen on one of my Google groups http://www.theregister.co.uk/2012/12/21/financial_software_disasters/ Terry (Tez)

13 years, 3 months

rtVAX 300.

by holm＠freibergnet.de

Next time I'll get this: http://www.tiffe.de/images/11122012114.jpg Is anything known about this board here (Manufacturer, Adresses, Switch settings and so on)? Looks to me like an VAX upgrade to an PC with onboard SCSI, Ethernet and Serial Ports... I have 2 2nd rtVAX board here from a friend, this is a VME CPU with SCSI on board. I should look if I could get it to boot.. Any hints welcome, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

13 years, 3 months

PDP-8 Paper Tape Reader Emulator

by michael.99.thompson＠gmail.com

With lots of help from members of this forum and other friends I made a high-speed paper tape reader emulator from a wire-wrapped interface board and an Emcraft SmartFusion FPGA evaluation board. The interface board plugs onto the Posibus interface slots in a PDP-8/L. I loaded Focal from a BIN paper tape image into a PDP-8/L in about 2 seconds. That equates to about 3000 characters per second. I put some details about the project here: https://sites.google.com/a/ricomputermuseum.org/home/Home/equipment/pdp-8-l… I will make an expanded version of the interface board and change to the Emcraft SOM FPGA board. That will give me enough I/O pins to emulate just about any peripheral that you can connect to the Posibus. It would be possible to make an interface board for the Negibus so that the peripheral emulator could be used on earlier PDP-8 systems. -- Michael Thompson

13 years, 3 months

1959 Electronics Experimenters Handbook

by sales＠elecplus.com

For those of you who like the OLD electronics, here is a free ebook: http://www.tubebooks.org/Books/Findlay_experimenters.pdf Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2805 / Virus Database: 2637/6005 - Release Date: 01/02/13

13 years, 3 months

EZ-SCSI 4.1

by sales＠elecplus.com

For those of you trying to deal with old Adaptec cards, like the AHA-15xx series, EZ-SCSI is needed, since they have no on-board controls, others than a few jumpers. The software came with some drives, but is hard to locate now. You can download the entire program here: ftp://82.199.101.173/install/System/Driverzzz/CD/SCSI/Adaptec%20EZ-SCSI%204. 01a%20-%201 Documentation is here: http://www.adaptec.com/en-us/support/_eol/scsi_sw/ez-scsi_4.01/install_sw/ez scsi_401_readme.htm?nc=/en-us/support/_eol/scsi_sw/ez-scsi_4.01/install_sw/e zscsi_401_readme.htm According to Adaptec, this will not work with anything higher than Win95 or NT, but you can use it in DOS or 3.1 Enjoy! Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2805 / Virus Database: 2637/6005 - Release Date: 01/02/13

13 years, 3 months

CFFA3000 and Apple III?

by wheagy＠gmail.com

Good idea. Thanks for the plan. I'll give that a try. ---- And why would he do it with such a great memory board he has? It is just a matter of finding one (socketed) memory chip! :oD You can do a simple troubleshooting to discover which chip is defective without having 4164s there: Number chips from 1 to 16: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Now swap the first and last (1 and 16) and run the memory test No problems? swap 2 and 15, and run the memory test No problems, swap 3 and 14 and so on When you find that the last swap changed the position of memory error, you know that one of these two chips has problems :o) Since you said you have a //e, you can find 4164 as the main board memories of the //e.

13 years, 3 months

IBM Displaywriter software?

by aek＠bitsavers.org

Is there an image archive of software for the Displaywriter somewhere? Someone donated one to the Computer History Museum recently, and I went through our archives and have only come up with a bunch of versions of the CE disk and a single TEXT PACK 1 diskette. I did image what we have, and put it up under http://bitsavers.org/bits/IBM/Displaywriter One thing I discovered was you HAVE to degauss the floppy before cloning the CE diskette. It expects tracks 37, 41 and 43 to be blank or it hangs.

13 years, 3 months

FS: Compact Flash Adapter 3000 For Apple II

by slandon110＠gmail.com

Im forced to sell my spare CFFA 3000 for Apple II, this allows you to use USB and Compact Flash cards on your Apple II, boot disk images right off a USB Stick 175 shipped in the USA, These are sold out right now Heres a link to what they are http://dreher.net/?s=projects/CFforAppleII&c=projects/CFforAppleII/main.php

13 years, 3 months

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