Vintage Synth Repair

Hello listers,

first of all, thank you for the help some of you gave me in looking for 
info about the TMS3615 chip

now I have a new quest: does anyone know where to find a M-147 chip 
and/or its datasheet ?
it was a 24 pin chip made by SGS/ATES, listed as "13-bit latch pedal 
sustain"
it was used in some organs, and I am sure there is one in the Eko K3
20-note pedalboard

any help would again be very welcome

thank you for this great list

greetings
Paolo Vallebona

Hello again Paollo
This seems to be a very versatile board you are working on.  I Googled your
chip number and came up with this.......
Quote.
A pedal tone generator for an electronic musical instrument, such as an
electronic organ, having the capability of automatically producing bass
rhythm patterns based on a tonic note, includes a memory for storing a
plurality of rhythm patterns which has a plurality of outputs for producing
a predetermined pattern sequence for each of the notes of the diatonic
musical scale, and a circuit for producing signals indicative of which of
the pedal keys, usually thirteen, is operated by the instrumentalist. The
pedal key signals are binary encoded to produce a plurality of code words
each unique to the tone of one of the keys, and each of the outputs from the
memory is also binary encoded to be uniquely represented by one of a
corresponding number of code words. Code words representing a depressed key
and the note instantaneouly being "played" by the memory are added to
produce a coded digital signal representative of the sum in the duodecimal
system of counting. For as long as a pedal key is depressed, the selected
pattern from the memory causes the variable modulo counter to produce a
pattern of musical tones, each being different from but related to the
others, the memory determining the pattern played and the depressed pedal
key determining the note at which the pattern sequence starts. end quote

So can we go back to the start.  What is the make and model of the
organ/pedal board. What problem do you have with it.

Seasons greetings.
JohnB


----- Original Message -----

From: "zaph632002" <vallebona.paolo@...>
To: <vintagesynthrepair@yahoogroups.com>
Sent: Tuesday, December 19, 2006 10:08 AM
Subject: [vintagesynthrepair] M-147


> Hello listers,
>
> first of all, thank you for the help some of you gave me in looking for
> info about the TMS3615 chip
>
> now I have a new quest: does anyone know where to find a M-147 chip
> and/or its datasheet ?
> it was a 24 pin chip made by SGS/ATES, listed as "13-bit latch pedal
> sustain"
> it was used in some organs, and I am sure there is one in the Eko K3
> 20-note pedalboard
>
> any help would again be very welcome
>
> thank you for this great list
>
> greetings
> Paolo Vallebona
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>

Hello again Paolo
Here is one source.
Organservice.com
920-028630-000  Custom IC: 13 Note Pedal Latch & TOS, M147  38.00
They may have data on this chip or at least be able to give you the pin out
info.
JohnB

----- Original Message -----

From: "zaph632002" <vallebona.paolo@...>
To: <vintagesynthrepair@yahoogroups.com>
Sent: Tuesday, December 19, 2006 10:08 AM
Subject: [vintagesynthrepair] M-147


> Hello listers,
>
> first of all, thank you for the help some of you gave me in looking for
> info about the TMS3615 chip
>
> now I have a new quest: does anyone know where to find a M-147 chip
> and/or its datasheet ?
> it was a 24 pin chip made by SGS/ATES, listed as "13-bit latch pedal
> sustain"
> it was used in some organs, and I am sure there is one in the Eko K3
> 20-note pedalboard
>
> any help would again be very welcome
>
> thank you for this great list
>
> greetings
> Paolo Vallebona
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>