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EPROM Emulator Questions
by Jess Askey 14 Oct '19

14 Oct '19

John's AdCOM question got me thinking a little bit.... So I have an old Itasca Systems NoROM Eprom emulator, it is sorta a genius little device because it is literally a small black 'Extended 32-Pin DIP' and it only sticks up about 1.5 Inches. It has a Serial Port built in with an RJ-12 (6/8Pin?) so the cable is lightweight. They stopped making it in 2000 or so and I really just want to make more of them (functionally). Some improvements would be... 1. Switch to USB + daisy chain so you can literally have dozens of these on a PCB if really needed. 2. An improved interface for sending data to the device(s) 3. Nice in place debugging and sniffing Anyone interested in working on a project like this with me? I can do the software side but Im not really there on the FPGA end. I have good details on the packaging of the ITASCA one and I can post pics if you want. They no longer make it or are in existence so I don't want to duplicate it per se, just build something with core functionality in the same form factor. Email me if interested.... jess(a)askey.org _______________________________________________ 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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Tek 1240/1241 Mainframe Card Compatability?
by Brad Gass 03 Oct '19

03 Oct '19

Hoping there might be a Tek guru out there that can answer this off the top of their head... Are the basic mainframe modules/boards compatible between the 1241 and 1240 (excluding the video card, obviously)? I can't find my paper service manuals right off to research, and PDF manuals are a pain to skim for me anyway. I have a bad "Control Processor" board in my 1241 (long story, yes, it's definitely toast, physically damaged) and am wondering if they are the same between the 1240 and 1241 (sans probably different firmware in the EPROM's). If they are the same, I'd just pick up a cheap locally available 1240 donor on eBay and go from there. Thanks for any insight anyone can give! --Brad _______________________________________________ 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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WTD: parts for ABI Boardmaster
by Tony Jones 26 Sep '19

26 Sep '19

Does anyone have any parts for an ABI Boardmaster 4000 that they'd be interested in selling/trading. Interested in any parts but specifically an LCD enclosure and LCD driver pcb. My unit has the pivot mount for the LCD on the case but none of the actual LCD parts. Open to non-working. Please drop me an email if you have anything. UK is fine. Tony _______________________________________________ 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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CPU tester - any one tried it?
by John Robertson 20 Sep '19

20 Sep '19

I run into CPUs that I think are bad (usually intermittent) and also buy the old bulk group of CPUs and I stumbled across this test fixture that claims to check all the 6800 and 6500 family of CPUs: http://www.cpushack.com/mc680xmcs650x-test-boards-for-sale/ Has anyone tried it and is it worth the investment? Copyright 2009, don't people ever update their web pages copyright info? Thanks! John :-#)# -- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ 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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Upgrade 68000 in 9100?
by John Robertson 18 Sep '19

18 Sep '19

I was glancing at some of the upgrade paths for 68000s a while ago and stumbled across this site: https://amiga.resource.cx/exp/pak3 Which talks about upgrades to 68020/030 for the 68000. Not sure if it is worth it, although my 9100FT does boot up much faster than my 9100s. In any case, I thought someone here may be interested if going further with this... John :-#)# -- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ 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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Using Flir android thermal camera to track down short
by davids＠oz.net 10 Sep '19

10 Sep '19

So I have an MCR board set which roasted the inductor on the +12v rail. Swapped the inductor for a fuse holder temporarily, instantly popped a .5A fuse, and then a 1A fuse. Pulled the sound board off the set (only thing that actually uses the +12). Hooked it up to my bench supply which can do constant current or constant voltage. Set it the voltage at 12 and dialed the current down to 0. Started turning up the current while watching the board with my phone using a FLIR One Pro camera attachment. The voltage stayed < 1v as the CC was kicking in. At .5A I could start to see the +12v and Analog ground traces light up. And one cap in particular was showing. Brought it up to 1A and that cap was definitely glowing. But not even warm to the touch. CP20 a 10MF 25V Axial Tantalum cap. Turned off the power supply and cut the cap leg. Turned on power supply and current was negligible and voltage was at 12V. Total time to find it, 15 minutes and most of that was setup. I had tried using the HP current tracer on this board but wasn’t getting very good feedback and after an hour or so I gave up with it. This camera is kind of expensive ($300 on amazon). And I was skeptical about how effective it would be. I was AMAZED at how well it was showing the current path through the traces at even a low current level. And you can use the software to take pictures & video of the work for later review. I had borrowed this unit from someone at work and was talking to the wife (aka the finance committee) about this and showed her the pictures. Then mentioned there was a $200 non pro unit and a $300 pro unit (which I was using). She said “Spend the extra $100, it’s a tool not a toy”. I knew I married the right woman 😊 David _______________________________________________ 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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Fluke 9005a or 9010a Key Caps Wanted Correction
by Bob Economaki 09 Sep '19

09 Sep '19

Hi Fluke enthusiasts Looking for the Number 0 key cap for a Fluke 9005a or 9010a. The legend on the key cap is the numeral 0 with 0000 printed below. Any help would be most appreciated. Thanks everybody BobE _______________________________________________ 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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Fluke 9005a or 9010a Key Caps Wanted
by Bob Economaki 08 Sep '19

08 Sep '19

Hi Fluke enthusiasts Looking for the Number 0 key cap for a Fluke 9005a or 9010a. The legend on the key cap is the numeral 0 with 0001 printed below. Any help would be most appreciated. Thanks everybody BobE _______________________________________________ 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 : Pat9000 extender card
by Andrew Welburn 18 Aug '19

18 Aug '19

hi all, I'm doing some work on my pat9000 and i could really do with an extender card, mine didn't have one when i got it.. have you got a spare to sell? let me know! thanks -- Andrew Welburn andys-arcade _______________________________________________ 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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Fluke FIDE 4.1.9 Run-time error'68'
by John Robertson 12 Aug '19

12 Aug '19

I've been using the 9010A only with the keyboard, however I am now finding that I have to run some scripts for servicing some old game boards - Pole Position 2 by Namco. By and large I can type the stuff in, but I wanted to use FIDE to both edit the code and upload it to my unit either via the USB mod or the Wi-Fi mod (back in 2015/2016 we talked about these). Is anyone else using Quarterarcade's FIDE? I have a regular occurrence of the run-time error 68. It is Windows based: 68 Device unavailable A hardware device or necessary requirement for the program is not being found. Verify all hardware and software required by the program is installed. If you continue to have the same issues verify the latest updates are installed for the program as well as any hardware device the program needs. Anyone else found a solution or a cause for this? James did leave the source code for FIDE: https://app.assembla.com/spaces/FIDE/subversion/source/HEAD I don't know if James is still hanging out here at TTL, but I certainly appreciate his FIDE program! Perhaps FIDE just isn't happy running over a network...or does it needs longer timeouts? Thanks, John :-#)# -- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ 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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