Re: IIe Keyboard On A II Plus

["Bill Garber" <willy46pa@comcast.net>]

<a2aviator@gmail.com> wrote in message 
fffa1aca-f717-4dbd-b778-73242489b6fe@p25g2000pri.googlegroups.com">news:fffa1aca-f717-4dbd-b778-73242489b6fe@p25g2000pri.googlegroups.com...
> Thats freaking kinda cool actually..
> 
> I never would have thought that the AY3600 could contain code/be
> emulated like that. Too bad that Atmel didn't exist back when.. heck.. 

Actually, this was possible for quite a long time, before Atmel. 
Keyboard encoders are microcontrollers. The ATmega8515/L 
can do much, MUCH more than encode a keyboard matrix. 
This application only uses a little more than $0200 of the total 
programming ram, then there is some sram, and eeprom, too. 
Then you can add external components, as well. 

As Michael Mahon put it, this thing makes the 6502 look like 
a toy by comparison. 

Bill Garber from GS-Electronics
http://www.garberstreet.com