[sdiy] Keyboard scanner IC

[Tristan]

Emu also used a mask programmed 6500 for the panel/keyboard scanner on
the EIII, Emax and Emax II. All I can say is they must have been
really cheap back in the day :P

Tuesday, January 27, 2009, 9:11:03 PM, you wrote:

RB> On Mon, 26 Jan 2009, Andre Majorel wrote:

>> I have no idea where you could find a 6511. I don't even have a
>> data sheet for it.

RB> 6500/11, not 6511.
RB>  
->> http://www.buchty.net/ensoniq/files/r6500.pdf

RB> I do have some Mirage (-01) and ESQ1 (-02) keyboard scanners as well als
RB> ESQ1/SQ80 display processors (-03). Although especially the count on the
RB> latter is steadily decreasing -- seems like especially the ESQ1 is good
RB> in frying either.

>> I don't see an EPROM in the parts list. Is the 6511 OTP or even
>> mask-programmed?

RB> Yes, it is. 

RB> Unfortunately also with no easy way of reading out the internals like 
RB> 80xx microcontrollers.

RB> Rainer
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