[sdiy] Oberheim Matrix 6r ROM image needed

[Roman Sowa]

It's real-life tested part and it worked for about 20 years since 
manufacture. You don't have that assurance with new part, that may work 
for 200 years as some EPROMs claim, or only for 2 weeks before it breaks 
because new process uses 100 times less silicon than 20 years ago.
Besides, it's vintage EPROM, so I'm sure it contributes to that vintage 
sound...

Anyway - if you choose to use new one, check the datasheet first. Some 
new EPROMs have data retention rated at only 10 years. More than needed 
for consumer stuff, but total mistake for synths.

Mahined sockets are overrated IMHO. The best gas-tight grip have those 
2-springing leaves type, I guess you can call them old shool, been 
around for few decades.

Roman

W dniu 2014-08-18 21:48, Csaba Zvekan pisze:
>
> Two things that worry me off hand: 1. the connectors with the ribbon
> cable. Lot’s of problems there in the future and 2. the EPROM 27256.
> The question is if the actual part needs replacing as well or if it
> is freshly programmed will the lifetime be another 10-15 years. Isn’t
> it better to get brand new parts from today and burn them freshly to
> avoid more problems. Oh and the sockets are really old school. Would
> be nice to get new machined sockets. And tons of capacitors puhh lots
> of work.
>
> Many thanks for your help
>
> Csaba
>
>
> On 18 Aug 2014, at 17:20, Csaba Zvekan <czvekan at gmail.com> wrote:
>
>> Yes, they are all completely different firmware. 2.13 is for Matrix
>> 6r while the 2.13a is for Matrix 6. The Matrix 1000 is using a
>> different version called 1.12.
>>
>> Many thanks
>>
>>
>>
>>
>> On 18 Aug 2014, at 16:31, ChristianH <chris at chrismusic.de> wrote:
>>
>>> Considering that the 1000 has 800 ROM presets, I wouldn't expect
>>> it to have the same firmware as anything else. It *may* be
>>> compatible, but most certainly not the same.
>>>
>>> And I seem to remember that there are some M6 or M6r SysEx
>>> messages that the M1000 ignores. Don't have the manual right now,
>>> IIRC some additional performance/effects/combination stuff.
>>>
>>> Chris
>>>
>>>
>>>
>>> On Mon, 18 Aug 2014 16:03:26 +0200 Andre Majorel
>>> <aym-htnys at teaser.fr> wrote:
>>>
>>>> On 2014-08-17 23:15 +0200, Csaba Zvekan wrote:
>>>>
>>>>> Thank you Terry and many thanks , Andre that?s the one. I
>>>>> believe Matrix 1000 and Matrix 6r share somewhat the same
>>>>> architecture. Perhaps I could readout the ROM from my Matrix
>>>>> 1000 or swap the firmware and see if that solves my problem?
>>>>
>>>> From what I've read in the archives of the oberheim Yahoo
>>>> group, the Matrix 6 and Matrix 1000 don't respond to all the
>>>> same MIDI messages so there are significant differences between
>>>> their firmwares.
>>>>
>>>> They don't have the same front panels so they the may have
>>>> completely different electronics. Could be that, on the Matrix
>>>> 1000, writing 0x12 to I/O register 0x34 prepares for reading a
>>>> front panel switch but on the Matrix 6R, it shorts two output
>>>> ports...
>>>>
>>>> This also applies to the M6 vs. M6R, by the way. It would be
>>>> pretty perverse but we've all seen worse.
>>>>
>>>> Maybe the experts on the oberheim list know ?
>>>>
>>>> https://groups.yahoo.com/neo/groups/oberheim/
>>>>
>>>> -- André Majorel http://www.teaser.fr/~amajorel/
>>>> _______________________________________________ Synth-diy
>>>> mailing list Synth-diy at dropmix.xs4all.nl
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>>>
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>
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