Date   : Mon, 13 Jan 1997 13:38:38 +0000
From   : deweger <deweger@...>
Subject: Re: How to read/write *OPT4 parameter

> You haven't made it clear what machine you're using to read the data. If
> you're using a PC then you will have to read sectors. Here's what to do:

Sorry. I was talking about reading the data on a BBC.

> Read track 0 sector 1 into a buffer. The boot option is stored in bits
4 and 5
> of byte 6 (counting byte 0 as the first byte). The format is pretty
obvious:
> 
>         00 - no option
>         01 - load
>         10 - run
>         11 - exec

Right. This works (probably) for Acorn DFSs. But does it also work for
Acorn ADFS, Watford, Opus and Solidisk DDFs, etc.?

> Hope this helps,
> 
> Dave.