February 2007 - TechToolsList - listserv.classicarcade.com

Help request: 16500B LA ROM images needed
by David Fish 16 Feb '07

16 Feb '07

Could someone with access to an HP 16500B Logic Analyzer do me a big favor and read the ROM images off the CPU card? The devices are AMD 27H256 PROMS in a 32-pin PLCC package. If that's not possible could you verify that all four 32-pin PLCC sockets are populated? I'd really appreciate the help. Thanks, Dave _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist

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HP 16510B programming info
by Adam Courchesne 15 Feb '07

15 Feb '07

I'm looking to make an app that will convert HP16510B timing info into a VCD (value change dump) format. I can get the data from the HP16500A, but I need the 16510B programming manual to know what the block data format is. Does anyone have one that can scan that section for me? Manuals are like $30+ on ebay and I can't justify that for this simple project. Thanks, -Adam "Don't judge my God by my inability to follow him" =============== www.onecircuit.com =============== _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist

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Looking for 24-pin IDC flat cable plug
by Matt Rossiter 14 Feb '07

14 Feb '07

I'm trying to find a source for a 24-pin IDC flat cable plug that is .600 inch wide (like a standard eprom). Mouser has part number 151-2P24 - but it's only .300 inch wide (like a standard 74 series ttl chip). I found this part here --> http://tinyurl.com/3aqqy6 - but I don't think I can order directly from this company. I sent them an email though. Anyway, I want to build a connector that allows me to separate the Sega XY timing and control boards far apart, but I seem to be having a hard time locating this plug. http://games.rossiters.com/24p-connector.jpg Just wondering if anyone knows a good source. Matt PS - Action Electronics is a good source if you want to make your own Cinematronics connectors. http://www.action-electronics.com/computerconnectors.htm _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist

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Manual for the Fluke Z80 pod...
by Chris Hardy 13 Feb '07

13 Feb '07

I was curious about the physical differences between the Z80 and the Z80QT pod but there only seems to be a scan of the Z80QT manual. (would be nice to convert a std z80 pod to a qt one) Does anyone have a scan of the standard Z80 manual? I've looked in my old spies TE archive and it's not there or on the TTL ftp Thanks Chris Hardy _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist

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Re: [Techtoolslist] O-scope Z-Channel Question
by Dave M 11 Feb '07

11 Feb '07

Taken from the 475 manual, the Z-Axis has the following characteristics: Sensitivity: Positive-going signal from ground decreases intensity 5 V P-P signal causes noticeable modulation at normal intensity Maximum Input Voltage: 100 V (DC plus peak AC) 100 V P-P AC at 1 kHz or less Useable Frequency Range: DC to 50 MHz. I take the sensitivity spec to mean that you need AT LEAST 5Vp-p to see any intensity modulation. To completely blank the trace, you need more than 5Vp-p. I haven't used the Z-Axis on my 575 in recent memory, but it makes sense that you will need to (A) check the amplitude and polarity of the signal you're feeding to the Z-Axis, (B) amplify it to an amplitude that will give you the needed blanking level, and (C) invert it if necessary to give a positive-going pulse with ground reference. Getting sufficient amplitude to completely blank the trace will likely require some experimentation, but shouldn't be difficult. If I were doing this, I'd start with an amplifier with a gain of 2x to maybe 5x and see how that works. My guess is that it will take a pulse of around +10V to give complete blanking. Cheers!! Dave M _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist

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O-scope Z-Channel Question
by Matt Rossiter 10 Feb '07

10 Feb '07

I'm using a Tektronix 475 Oscilloscope and, of course, I use XY mode for testing to see if the X and Y signals look good on the screen. There is an external Z axis channel in the back, but I've never gotten it completely to work. Someone once told me that I need to use an inverter to invert the signal into the probe - which sort of works, but I still see the vector retrace lines. Is it possible to completely blank out the Z signals so that the picture looks the way it's supposed to? Thanks Matt _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist

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HP16500A manual
by Adam Courchesne 01 Feb '07

01 Feb '07

Also looking for a copy of the operators manual for the 16500A. Thanks, -- -Adam =============== www.onecircuit.com =============== _______________________________________________ Techtoolslist mailing list Techtoolslist(a)flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist

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