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 ?

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.

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"...

>
> 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.

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...

/Uffe

>
> -----Message d'origine-----
> De : owner-cbm-hackers@musoftware.de [mailto:owner-cbm-hackers@musoftware.de] De la part de Uffe Jakobsen
> Envoyé : vendredi 2 janvier 2015 22:45
> À : cbm-hackers@musoftware.de
> 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 : owner-cbm-hackers@musoftware.de
>> [mailto:owner-cbm-hackers@musoftware.de] De la part de Uffe Jakobsen
>> Envoyé : vendredi 2 janvier 2015 16:39 À : cbm-hackers@musoftware.de
>> 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
>>
>>




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