-----Message d'origine----- De : firstname.lastname@example.org [mailto:email@example.com] De la part de Uffe Jakobsen Envoyé : vendredi 2 janvier 2015 23:36 À : firstname.lastname@example.org Objet : Re: 6502 with logic sniffer On 2015-01-02 23:09, didier derny wrote: >> The cbm3000 had a relatively short life around 1979/1980 >> >> I'm using this product: >> http://dangerousprototypes.com/open-logic-sniffer/ >> >> I give up this product is hell, loosing the usb serial port (need >> reboot each time it is disconnected) The documentation is poor, >> browsing a lot of web pages to find some elementary information's >> > > Aah, yes the Open Bench LogicSniffer, I have one of those. > > Are you using the OLS java GUI ? Yes I'm using OLS > > I have no serial port problems on linux - but guessing from your mail-client I guess that you are on > Windows. > >> Apparently the vhdl code for this specific model is not available (I >> wanted to check the .ucf file to find the information I needed) > > Yes, It seems to closed source - there seems to be no development on its features (and bugs) - it is > a dead project. > It's a particularity of "open" project, they are often tightly "closed" >> Compared to other commercial LAs its proces is extremely low for up to >> 32 channels. >> >>It has some nice features- up to 200Mhz sampling - *BUT* only 216k sampling memory (not so nice). >>That is compensated by its ability to do RLE compression of its samples - which often can save you >>especially with low-frequency retro systems like CBMs where it in theory can stream the RLE samples >>to the host system "forever"... The one I was using in 1981 could only record 256 events x 32 channels Most of the time it was sufficient to debug [or crack a dongle in 10mn] (was not the official use) :) The nice part was that it was very easy to use the external clock / external trigger It also had IEEE-488 to transfer the data to another computer. >> >> It is brand new but one channel is not responding... >> > > You do know that it is only the first 16 channels that are buffered and thereby 5-volt tolerant ? > > The next 16 channels are unbuffered - and hence they are not 5 volt tolerant. > > For the last 16 channels to become 5 volt tolerant you need the OLS input buffer wing - a separate > add on. Yes, I've bought and installed the add on I traced the missing signal, it cross the level shifter correctly and reach the fpga >> http://www.seeedstudio.com/depot/Logic-Sniffer-16bit-Input-Buffer-Wing-p-721.html > Anyway I've never used the clock-input pins on the OLS - but a (quick) look at the traces on the PCB > shows that they are running directly to the FPGA - and hence I suspect that neither of CKI,TRGI,TRGO > are 5v tolerant either... That’s what I thought, but I've not found any clear information I checked CKO I found 1.6v Anyway I contact seedstudio for the failing signal And I move to something else I'll try my project in a few weeks with another logic analyser /Uffe > > -----Message d'origine----- > De : email@example.com > [mailto:firstname.lastname@example.org] De la part de Uffe Jakobsen > Envoyé : vendredi 2 janvier 2015 22:45 À : email@example.com > Objet : Re: 6502 with logic sniffer > > > > On 2015-01-02 20:41, didier derny wrote: >> To tell the truth for me amiga never existed, Commodore ended with >> the departure of Jack Tramiel in 1984... >> >> http://fr.wikipedia.org/wiki/Commodore_International#mediaviewer/File: >> CBM3008_01_mod02_res.jpg > > Aaah, I see - I've never seen a CBM3xxx model - only the > CBM2001,40xx,80xx models > >> >> I think I found how to rebuild the same thing with a logic sniffer My >> main problem is to know the voltage that the CKI pin can accept >> >> I guess it's not 5.v but I'm not sure if it's 3.3v or less > > Still, if you are looking for help on the list - it would help if you told what brand of logic sniffer you are using... > > /Uffe > >> >> >> -----Message d'origine----- >> De : firstname.lastname@example.org >> [mailto:email@example.com] De la part de Uffe Jakobsen >> Envoyé : vendredi 2 janvier 2015 16:39 À : firstname.lastname@example.org >> Objet : Re: 6502 with logic sniffer >> >> >> >> On 2015-01-02 13:05, didier derny wrote: >>> I’m trying to reproduce what I had in 1981 >> ... >>> >>> then we had a software on a commodore 3000 [directly connected to >>> the logic analyser via IEEE-488] to disassemble the code captured by >>> the logic analyzer >>> >> >> A Commodore 3000 - what model is that ? given that you mention the >> year >> 1981 it is not an Amiga 3000 as it came out in 1990 >> >>> recently I was using a 16 channels zeroplus but not enough channels >>> for a 6502 >>> >>> so I bought a logic sniffer >>> >> >> A logic sniffer is a quite generic term - are you referring to a specific product ? >> >> /Uffe >> >> Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2015-01-03 08:00:04
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