FAT16 in a BS2!!

Archiver

I just wrote a routine that gets the start of the first partition from the MBR,
finds the first FAT sector, reserves a cluster in the FAT, finds the first root
directory sector, makes a file entry, finds the beginning of the data portion of
the partition and writes a small text file.

I put the CF card in my USB reader and Win2000 didn't complain. Notepad popped
up and there was the text I entered using the BS2!!

Here, I thought I had run out of room in the BS2. I found a way to free another
250 bytes of code space. The code to work with the ram, ide and lcd takes 1104
bytes. That leaves 944 bytes to actually do something with this thing. The
code to write the text file takes 656 bytes, leaving 288 bytes free.

Next, I'm gonna try to read a file created on the PC and display it to the LCD.

I'll put the code on my site, but it will have to wait till tomorrow after work.
It's late....



Barry Michels
http://www.barrymichels.com/ide


[noparse][[/noparse]Non-text portions of this message have been removed]

Archiver

Barry,

I just had to go on the record and say that your IDE interface project is an
incredible effort on your part and just shows how a bit of determination can
yield tremendous results. The fact that you are sharing your results ( & code )
with everyone here just adds to an already amazing and appreciated
project. Keep up the excellent work.

Much Thanks,
Bill Mrozinski

Barry Michels wrote:

> I just wrote a routine that gets the start of the first partition from the
MBR, finds the first FAT sector, reserves a cluster in the FAT, finds the first
root directory sector, makes a file entry, finds the beginning of the data
portion of the partition and writes a small text file.
>
> I put the CF card in my USB reader and Win2000 didn't complain. Notepad
popped up and there was the text I entered using the BS2!!
>
> Here, I thought I had run out of room in the BS2. I found a way to free
another 250 bytes of code space. The code to work with the ram, ide and lcd
takes 1104 bytes. That leaves 944 bytes to actually do something with this
thing. The code to write the text file takes 656 bytes, leaving 288 bytes free.
>
> Next, I'm gonna try to read a file created on the PC and display it to the
LCD.
>
> I'll put the code on my site, but it will have to wait till tomorrow after
work. It's late....
>
> Barry Michels
> http://www.barrymichels.com/ide
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
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Archiver

I agree with Bill!! I think this is an outstanding effort on the part
of Barry and I think he needs to be publicly commended for it!! Keep up
the good work and keep us posted on your results..


Regards,

Leroy

"William E. Mrozinski" wrote:
>
> Barry,
>
> I just had to go on the record and say that your IDE interface project is
an incredible effort on your part and just shows how a bit of determination can
yield tremendous results. The fact that you are sharing your results ( & code )
with everyone here just adds to an already amazing and appreciated
> project. Keep up the excellent work.
>
> Much Thanks,
> Bill Mrozinski
>
> Barry Michels wrote:
>
> > I just wrote a routine that gets the start of the first partition from the
MBR, finds the first FAT sector, reserves a cluster in the FAT, finds the first
root directory sector, makes a file entry, finds the beginning of the data
portion of the partition and writes a small text file.