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
Atari600XL_Ram_Upgrade_to_64MB
