How to copy a cartridge game in 1983

Back in the 80's, all I had was a cassette tape drive and it's not easy to copy a cartridge to tape.
We used a long forgotten little program called "ROMSAVE" to copy cartridges, but it required a bit of hardware hacking to allow the VIC to save the contents of a cartridge ROM.

Thanks to Robin at 8-Bit Show And Tell for his generous help.
https://www.youtube.com/8BitShowAndTell/featured

Link to ROMSave program: https://bit.ly/3j5YLNc

Index
Intro: 0:00
Hardware: 1:20
Saving to Disk: 2:23
Saving to Tape: 4:39
Loading a saved cartridge: 8:47
Write protecting a RAM cartridge: 10:13
Summary and End: 11:13

Видео How to copy a cartridge game in 1983 канала Chuck Hutchins