Sega Saturn Mod Chip Notes
If you want a pain free way of playing CDr discs on your Saturn, then I think the best solution is to install a modchip, the alternatives are hunting down some old/rare’ish carts, doing disc swaps, messing around with the lid switch etc. I guess once you get used to a method, you don’t mind it, I’m just used to having the modchip fitted.
If your Saturn has a CD drive that attaches to the motherboard with a 21 pin cable, then you’re in luck, there’s a few shops selling a suitable modchip and they usually provide excellent online guides for installing it. Have a look at consolegoods.co.uk and Racketboy for example.
If you have a CD drive that attaches using a 20 pin cable (Model 1 Saturns with oval buttons, and some very early Model 2’s I think), then it’s a lot more difficult. I haven’t seen a suitable chip for sale for years. You can mod your modchip though!