Atari 600XL RAM Ugrade to 64MB

Its time to bring up this little beauty to the level of a Atari 800XL.

An easy mod, because all parts in a Atari 600XL are socket and you  only need to change 2 RAM Chips and do some wiring

Works with Pal and here shown NTSC Version

Remove U11 and U12 (was: TMS 4416-15NL 4bitx16k)

Replace with : MCM41464 AP10 (4bitx64k)
or : NEC D41464C-10 (4bitx64k)
OR : HMS50464P (4bitx64k)
or : any 4464 equialent (4bitx64k)

Wire Lifted DownSide R36 to Lifted U16 Pin 08

Wire Lifted U5 Pin 03 to U9 Pin 21 Dia Nearby

Wire Lifted U6 Pin 10 to U9 Pin 22 Dia nearby





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