It replaces the stock C64 KERNAL ROM mapped to memory addresses $E000-$FFFF .
So, what made JIFFYDOS so special? Here are some of its key features: jiffydos-c64.bin
Usually, this was the part where Leo would go upstairs to make a sandwich. But today, the drive didn't groan. It It replaces the stock C64 KERNAL ROM mapped
If you want to set this up for your own system, let me know: jiffydos-c64.bin
Desolder the original C64 Kernal ROM from the motherboard (if it is not already socketed).