[no subject]

I think there are some free block editors out there if you just want to
read and write disks. I use a commercial program called Salvation Supreme
that allows reading and writing of blocks.

A simple program would be this:

   JSR $BF00
   DFB function_code
   DW  address_of_parameters

$BF00 is the entry point for ProDOS, function_code is what you want done
($80 is read a block & $81 is write a block) and the address_of_parameters
contains a pointer to information like which block to read or write, where
to put or get the information, etc.

I am sure this has been done from Applesoft. The routine would be put in a
free part of memory and then called from Applesoft.

It is usually done on a block level. I think a sector is half a block.

- James - [IMAGE]