https://github.com/DC-SWAT/DreamShell/issues/80
Updated Post: https://www.reddit.com/r/dreamcast/s/X2fW7bdw5c
Original Post:
Hi i've been looking into alternatives for the Piggy Back Bios mods and the PCB add on mods. As I haven't had luck with such mods in the past. Until I stumbled upon an alternative for a multiboot bios mod without the need for Piggy Back Bios mods and PCB add ons, by simply just installing a larger bios that can hold multiple banks of bios's in place of the original.
(https://assemblergames.org/viewtopic.ph ... 7&start=10)
It is a post about some person trying to do a Triple Bios mod to there Dreamcast using a 4MB 29l3211 chips. But I'm only interested in the Dualboot bios mod. And I got this 4MB 29l3211 preflashed, and i installed it into my Dreamcast following one of the diagrams in that post. But it was a partial success. I can only boot into Bank 2 through the Pin 44 pin. But not bank one through the pin 12 pin. Have I made a mistake anywhere with my install? I only cut the trace for pin 12 and went over my install multiple times with reflows and switching around wires.
Here is my work log with me installing this larger bios into my Dreamcasts. https://github.com/DC-SWAT/DreamShell/issues/80
