It wasn't about "tuning", you simply needed to configure everything so there weren't any collisions, and this depended on whatever other expansion cards and por

It wasn't about "tuning", you simply needed to configure everything so there weren't any collisions, and this depended on whatever other expansion cards and ports you had in your PC, because there was a limited amount of IRQ channels (2, 5, 7, 10), DMA channels (0, 1, 3), and I/O addresses (0x220, 0x240, 0x260, 0x280) that expansion cards could use. The original 8-bit cards could be configured through jumpers on the card, and the settings you put into autoexec.bat or individual setup programs for your games, simply had to match the hardware settings. Later, plug'n'play meant that your PC's BIOS could auto-detect and auto-assign everything to avoid collisions, so you didn't have to bother with it.