Lpc2000

Can you please explain in a bit detail what you mean by Software SPI 
and hardware SPI.
--- In lpc2000@yahoogroups.com, "Atanas Tulbenski" <top4e@y...> 
wrote:
> 
>  I'm using SD card with LPC2124. At first I used software SPI and 
> everything was fine. When I start using hardware SPI got problem. 
The 
> SD card initializes, I can read serial numbers, but I cant read 
data 
> using CMD17. The card returns error code 0x04 "ilegal command". 
Any 
> sugestions?