Re: VSDRIVE stand alone host (no pc) thread

[Kevin <kevin@hackaday.com>]

On Friday, October 12, 2012 6:14:57 AM UTC-5, schmidtd wrote:
> On 10/11/2012 8:59 PM, Kevin wrote:
> 
> > for reference, the position is calculated as ...
> 
> >
> 
> > 512*command[1]+131072*command[2], // bytes to move pointer
> 
> 
> 
> You might need to post more of your code.  But keep in mind that the 
> 
> protocol being sent to you by my driver is slightly different than 
> 
> Terence's original...
> 
> http://adtpro.sourceforge.net/protocol.html#Read
> 
> 
> 
> Depending on how you're filling your command[] buffer, bytes 1 and 2 of 
> 
> the incoming request are going to be shifted by one byte, because 
> 
> there's the "E" envelope in front of it.  You have said the checksums 
> 
> agree, so that might not be the issue.  But I'd expect bytes 2 and 3 to 
> 
> be your lo/hi incoming block number, not 1 and 2.  Lacking any other 
> 
> clues, I'm not sure where else to go - it's a simple translation from 
> 
> incoming block number to position in the file.

well its 1 and 2 cause I dont save the 'E' into the buffer, so  its

input[0] = command ie 0x03
input[1] = block
input[2] = block
input[3] = checksum