Max Ram Cartridge for the Commodore VIC20
No Buttons, No switches, No Roms.
Plug the MAXRAM cartridge into your VIC20 and switch on, you will see a menu in the style of the original Penultimate Cartridge. From this you can select how much RAM to add to your VIC20. The four unshifted function keys give the most popular RAM configurations.
f1 - 0K, unexpanded VIC20
f3 - 3K, 3K RAM in block 0
f5 - 8K, 8K RAM in block 1
f7 - 35K, 3K RAM in block 0, 4x8K RAM in blocks 1,2,3 and 5
The shifted function keys give a further four RAM configurations
f2 - 16K, 2x8K RAM in blocks 1 and 2
f4 - 24K, 3x8K RAM in blocks 1, 2 and 3
f6 - 27K, 3K RAM in block 0, 3x8K RAM in blocks 1,2 and 3
f8 - 32K, 4x8K RAM in blocks 1,2,3 and 5
For a more complete VIC20 ROM/RAM solution, check out the Pentulimate+ Cartridge