October 2014 - TechToolsList - listserv.classicarcade.com

FS Fluke 9100a Calibration Module
by Default 26 Oct '14

26 Oct '14

I dont have a 9100a to test, but they look brand new. I have a bunch. $30 shipped anywhere in the US. _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/

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Free: Telequipment (Tektronix) D32 10MHz Oscilloscope
by Chris Loggans via Techtoolslist 13 Oct '14

13 Oct '14

I have an old non-working Telequipment (Tektronix) D32 10MHz oscilloscope that someone gave to me years ago that I've never had a chance to repair. This unit had the ability to run off of 6 D sized NiCd's or line power. Unfortunately, the NiCd's leaked at some point before I got the unit and there is corrosion on one corner of one of the trigger/sweep generator circuit board. The unit powers up but there is nothing on the display. I am just never going to get around to fixing this so I wanted to offer it up to someone who has the time to resurrect it. It's missing a trim piece on one side and the brackets that hold the NiCd's but is otherwise complete. I also have the original manual that I'll include with the unit. If you want this, send me an email and I'll send it to you for just the cost of shipping. PS - If you want to see a breakdown of the unit, someone has posted a YouTube video about it here: Telequipment D32 Oscilloscope Teardown and Repair Telequipment D32 Oscilloscope Teardown and Repair View on www.youtube.com Preview by Yahoo Thanks, -Chris _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/

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Re: [Techtoolslist] Techtoolslist Digest, Vol 119, Issue 1
by Sprout 09 Oct '14

09 Oct '14

Thanks John - Was a mixture of two issues; I wondered about using the LS's as well - didn't key in that the C's were CMOS right away but had some HC245's on order by the time you replied. It also appears that some of the "tested good" 74C245's were marginal. After replacing all of them with the 74HC245's, it's working great! Otherwise, had a link to the FTP site - but had to back up a few directories to find the ROM files, so I'm good there as well. Regards, Brent On Thu, Oct 2, 2014 at 12:48 AM, <techtoolslist-request(a)flippers.com> wrote: > Send Techtoolslist mailing list submissions to > techtoolslist(a)flippers.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://pairlist7.pair.net/mailman/listinfo/techtoolslist > or, via email, send a message with subject or body 'help' to > techtoolslist-request(a)flippers.com > > You can reach the person managing the list at > techtoolslist-owner(a)flippers.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Techtoolslist digest..." > > > Today's Topics: > > 1. Re: Z80 Pod - weak signal strength? (John Robertson) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 30 Sep 2014 22:59:36 -0700 > From: John Robertson <jrr(a)flippers.com> > To: Technical Tools Mail List <techtoolslist(a)flippers.com> > Subject: Re: [Techtoolslist] Z80 Pod - weak signal strength? > Message-ID: <542B9848.5040605(a)flippers.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > On 09/29/2014, 6:40 PM, Sprout wrote: > > Relatively new owner, and learning my way around the hardware.. Picked > > up a Z80 pod as part of a larger bundle purchase that was flaky. > > Eventually got it working, and in the process replaced a few 74C245's on > > the secondary PCB with 74LS245's. Consistently passing self test now. > > 74Cxx(x) devices handle noise better than 74LSxx(x) as I understand it. > Best to hunt the 74C245s down. Voltage swings are also a bit better > allowing for a better noise immunity over the length of the cable. > > Initially, when it was somewhat flaky (and before I appear to have blown > > the '245's by troubleshooting with the pod removed from it's shell - > gotta > > be very careful the two boards don't come apart while moving it around :P > > Initial issue was the two boards were poorly seated), I had a couple of > > good game boards where it allowed me to consistently run UUT with no > > issues. Since then, I'm noticing certain boards will run perfectly with > > the pod (ie Galaxian), and others (Jr. PacMan, Sega Frogger, Ms. Pac > > modified to run Crush Roller) just constantly watch-dog. My guess is > that > > I have poor signal strength between the pod and the PCB's, but wanted to > > see if anybody found this as a common issue, and whether there are any > > components in the pod that may be worth looking at/replacing to address > > this? The Ms. Pac board has the small satellite board, and I noticed if > I > > bypass it and go directly to the main PCB socket, the board is a bit more > > active, which makes me feel I'm on the right track. Jr. Pac doesn't use > > that however, and refuses to budge. > > > > I've verified all the '245's and '374's check out good as per the IC test > > functions on my EPROM programmer, and again - passes self-test > > consistently. When on the Galaxian PCB, I could read ROM without issue, > > pass all RAM tests without issue - seems to work perfectly. Can't do > > anything on the others as it's complaining about active lines constantly, > > which are toggling because the boards seem to be watch-dogging as noted. > > If I disable active line monitoring, bus tests pass. > > The ROM and RAM tests are run at the Pod's speed, not the UUT's (Unit > Under Test) so they will often pass even if the Pod won't boot the > board. Only if you have the Z80QT can you run RAM/ROM tests directly > under the UUT's CPU at system speed. > > I find one has to disable the watchdog to get these boards to boot from > the pod... > > I also built a new cable (slightly longer than the original) with no > change > > in behavior. This one uses the standard, flat ribbon cable. Also > dropped > > in a Z80B - no change; these boards are all running at 3.072Mhz anyway, > > which shouldn't be an issue... > > > The cable for each family of pod is a bit special - you have to have the > correct one for yours. See notes at the bottom of my Fluke page: > > http://flippers.com/fluke.html > > I haven't taken a cable apart but I suspect there may be some funky bits > in that rather fat header on some of them. Anyone with access to X-Ray > equipment care to take a look? > > > Thoughts/suggestions? On a side note - what's the most current version > on > > the ROM? Mine shows part# 536581, version 1.0. I found the Z80QT pod > ROM > > and a few others online, but not this one. Plan to dump it regardless, > but > > would like to upgrade if there's a newer version floating about. > > > > ... > > Thanks, > > > > Brent > > > > The ROM code has been up on the TTL FTP site for over a decade...lots of > useful info there! > > FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment > > John :-#)# > -- > How to subscribe or unsubscribe from TTL > http://seven.pairlist.net/mailman/listinfo/techtoolslist > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Techtoolslist mailing list > Techtoolslist(a)flippers.com > https://pairlist7.pair.net/mailman/listinfo/techtoolslist > > > ------------------------------ > > End of Techtoolslist Digest, Vol 119, Issue 1 > ********************************************* > _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/

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WTB: Unipak 2 or 2B
by KERSCH Martin 08 Oct '14

08 Oct '14

Hello, I am looking for a replacement Unipak 2 or 2b, in working condition, for my Data I/O 29b. Only the pak, I do have a working programmer. Thanks, Martin [http://www.herold.at/images/hbdat_logo.gif]<http://www.herold.at> HEROLD Business Data GmbH Guntramsdorfer Straße 105 2340 Mödling FN 233171z Landesgericht Wiener Neustadt Besuchen Sie uns online und mobil www.herold.at! Weitere Informationen zu unseren Produkten finden Sie unter: http://ichbinderherold.at Oder in unserem Video auf YouTube.<http://www.youtube.com/watch?v=i--5-weI7Ck> [http://www.herold.at/images/fb_icon_mail.gif]<http://www.facebook.at/derherold>Werden Sie Fan von HEROLD auf Facebook! Diese E-Mail kann vertrauliche und/oder rechtlich geschützte Informationen enthalten. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese E-Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail sind nicht gestattet. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and delete this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden. _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/

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Data I/O 29B Firmware Upgrade
by Greg Baumgratz 06 Oct '14

06 Oct '14

I just picked up a 29B with a ton of extra modules. The 29B shows v01 so I would like to upgrade the firmware as far as possible. It looks like the FTP site has v6 available but i am not sure of the requirements. I have ROMs only at u33-u37 and v6 has u32-u38 so there are additional ROMs used and I also assume that u49 may need to be replaced as well. I cant really find any good materials on the upgrade requirements so I thought i would ask here in case anyone has gone through the same process. Are there any additional changes necessary? Jumpers, etc? Also, does the RAM board have any limitations in regard to the firmware? Apparently I have the 64K board so it is not upgradeable - does this matter for the firmware level? Does anyone have one they are parting out that may have the 256K board they would like to part with? Thanks, Greg _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/

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Z80 Pod - weak signal strength?
by Sprout 01 Oct '14

01 Oct '14

Relatively new owner, and learning my way around the hardware.. Picked up a Z80 pod as part of a larger bundle purchase that was flaky. Eventually got it working, and in the process replaced a few 74C245's on the secondary PCB with 74LS245's. Consistently passing self test now. Initially, when it was somewhat flaky (and before I appear to have blown the '245's by troubleshooting with the pod removed from it's shell - gotta be very careful the two boards don't come apart while moving it around :P Initial issue was the two boards were poorly seated), I had a couple of good game boards where it allowed me to consistently run UUT with no issues. Since then, I'm noticing certain boards will run perfectly with the pod (ie Galaxian), and others (Jr. PacMan, Sega Frogger, Ms. Pac modified to run Crush Roller) just constantly watch-dog. My guess is that I have poor signal strength between the pod and the PCB's, but wanted to see if anybody found this as a common issue, and whether there are any components in the pod that may be worth looking at/replacing to address this? The Ms. Pac board has the small satellite board, and I noticed if I bypass it and go directly to the main PCB socket, the board is a bit more active, which makes me feel I'm on the right track. Jr. Pac doesn't use that however, and refuses to budge. I've verified all the '245's and '374's check out good as per the IC test functions on my EPROM programmer, and again - passes self-test consistently. When on the Galaxian PCB, I could read ROM without issue, pass all RAM tests without issue - seems to work perfectly. Can't do anything on the others as it's complaining about active lines constantly, which are toggling because the boards seem to be watch-dogging as noted. If I disable active line monitoring, bus tests pass. I also built a new cable (slightly longer than the original) with no change in behavior. This one uses the standard, flat ribbon cable. Also dropped in a Z80B - no change; these boards are all running at 3.072Mhz anyway, which shouldn't be an issue... Thoughts/suggestions? On a side note - what's the most current version on the ROM? Mine shows part# 536581, version 1.0. I found the Z80QT pod ROM and a few others online, but not this one. Plan to dump it regardless, but would like to upgrade if there's a newer version floating about. Have otherwise done the USB mod - works great - and got one of the two tape drives I have working. Bundle came with 9 new tapes, so was nice to be able to use them if I want to. Going to try and manufacture replacement rings for the other tape drive, and will post any success I have doing so, since replacements are non-existent! Thanks, Brent _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/

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