Date   : Wed, 08 Oct 2003 03:07:28 +0100
From   : Mike Tomlinson <mike@...>
Subject: Re: XFER v4 problem

In article <002701c38d29$7993a2c0$94342fca@...>, Bob Devries
<bdevries@...> writes

>C.Pascal    8000   D9CD Locked CRC= E388
>
>Is there something wrong with this?

The load and exec addresses are unusual - &8000 is the start of Sideways
ROM space, and &D9CD is the warm start entry point on the BBC B OS 1.20.
So if one tried to execute C.Pascal (*RUN C.Pascal) it would load the
file over the currently selected ROM (which does nothing) then reset the
machine.  

This has two possible purposes:  to indicate that the file is not
executable machine code, or it could mean the file is a ROM image (if it
is exactly 8192 or 16384 bytes, it probably is a ROM.  You can tell by
looking at the first few bytes with *DUMP.)

I can't see the load and exec addresses affecting XFer - it simply opens
files from disc and squirts the contents down the serial port.

"Locked" simply means the file has been made read-only with *ACCESS
<file> L.

-- 
A. Top posters.
Q. What's the most annoying thing on Usenet?