I am not sure if anyone here is interested in this type of project, but I was for a few reasons (mainly to get my own CPS3 working with all 6 titles). While looking into them I made a few interesting discoveries that are not widely publicised and may assist anyone looking at taking on this project. This is based on early testing so ill update it when or as I know more.
1. They appear to be 100% compatible with the UltraBios, so you dont need to update your cart again if you already have an UltraBios.
2. The instability issues mentioned on the github appear to stem from the LS148a. This part appears to be to slow to turn off (tDIS) causing the mentioned instability. It can be fixed by using a 74F148 in the same location. I suspect a 74LVC148 would also achieve the same thing but have not tested it. This is important because the 74F is obsolete and difficult to obtain where as the 74LVC is still in production.
1. They appear to be 100% compatible with the UltraBios, so you dont need to update your cart again if you already have an UltraBios.
2. The instability issues mentioned on the github appear to stem from the LS148a. This part appears to be to slow to turn off (tDIS) causing the mentioned instability. It can be fixed by using a 74F148 in the same location. I suspect a 74LVC148 would also achieve the same thing but have not tested it. This is important because the 74F is obsolete and difficult to obtain where as the 74LVC is still in production.
