The Yamaha AN1x Synthesizer mailing list

erroneusnickname9876 a \ufffdcrit :

>I don't know if this is common knowledge or not, but according to yamaha tech support the 
>chip is no longer available. I recall someone mentioning 'burning' them. Is that possible?
>
Yes !
 you must have access to an EPROM programmer (something plugged behind a 
PC or a Mac with the related software) and a blank EPROM of the same 
type than the AN1X one (pinout, size and access time) . Assuming you 
have both , there are 2 possible ways :
copy an EPROM with the good OS inside or,
with the same equipment, dump the OS from the Yamaha EPROM into a JEDEC 
or binary format file, load it into the computer and "burn" a new 
EPROM.. Or 10!
The second is more convenient for a collective use because the file 
could be shared by a lot of people, even if they can't copy an EEPROM 
loaded with the last O.S. But some EPROMS can be protected : you can 
copy them, but not dump the whole content into a file.

>Legal?
>
It depends on the country but in theory the answer is no in most cases. 
But as Yamaha has stopped its production i don't think they could be 
interested in some lawsuit. For old cars or motorcycles some people are 
re-manufacturing spare parts unavailable from the original manufacturer 
without any legal problem.

> Expensive?
>  
>
The EPROM chip itself not , but the programmer can be expensive for a 
hobbyist.... Not the hardware which is relatively "basic" but without 
software .... sometimes it is possible to find one on the second hand 
market, some electronics DIY magazines have certainly issued their own. 
But it is not very common.... and to use it once ...

>Thought I would throw that out there. I'm at version 1.02, I don't know what the difference 
>is...but I figure it's more than the .02 makes me think it is, haha...
>  
>
Personnaly i don't know what's the soft rev. inside mine, as long as it 
works .....
Don't expect a monster upgrade: maybe some minor changes mostly related 
to the MIDI interface, some bugs found when you try to use your synth 
with another special one or some exotic soundcard . 99% of the owners 
could not even notice it ! Yamaha is a huge company and its products are 
extensively tested before entering the market. With small companies the 
first customers often "end" the tests, and the first revisions are often 
awfully unreliable. Some famous exemples : the first Prophet 5, the 
first Linn drums ... and lots of others.
Has someone tried to compare accurately the last O.S. to a previous 
revison ? Results ?
Cheers
J.F.
.

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