Thread: SD card adapter
View Single Post
Old 13 September 2014, 12:03   #42
ferix
Registered User
ferix's Avatar
 
Join Date: Sep 2009
Location: Spain
Age: 40
Posts: 95
Yes, they do in nibbles (4 bits), but it's only mandatory for high speed cards.
And there's no benefit in my case, I just read and write bytes.
The serial SPI transfer is achieved at very high speeds (from the amiga point of view), so you have your byte transmitted and/or received faster than the cpu can get them from the main memory.

In case you're interested:
https://www.sdcard.org/downloads/pls...partE1_100.pdf
and
https://www.sdcard.org/downloads/pls.../part1_410.pdf

Last edited by ferix; 13 September 2014 at 12:40.
ferix is offline  
 
Page generated in 0.08610 seconds with 9 queries