This is the next project I will be taking on – the BBC SD Card interface!
After reading Charlie’s post on his blog, I posted a comment for more info. I later received a reply to my comment and a email with the following URL to a post on the Stairway to Hell forum with more info on the interface. The original post can be found here.
Looks like the guys on the forum have put in a lot of work to get the SD interface designed. One forum contributor has created the board layout that you can see on the left.
With the design on the left, I have enough info on how to build the interface. He has used surface mount resistors, but I will use normal wired resistors as I have a large stock of them. Biggest challenge will be getting ahold of the L78133 3.3v voltage regulator. Charlie suggested I contact BitsBox to see if they have any in stock. He also suggested that I could use HT7133 but said they are a little weedy. Another alternative is the 1086v33, but this regulator comes in a larger package.
So, I will start building the interface as soon as I acquire the regulator. Watch this space for updates!