Date   : Fri, 29 Aug 2008 04:04:33 +0100
From   : mike@... (Mike Tomlinson)
Subject: Question about 1770 DFS interface testing it on a B

In article <48B6E5A6.2090308@...>, Andy Ford
<acorn@...> writes

>I just wondered if anyone can confirm on a B, if the usual Acorn 1770 
>DFS message should show up (on startup) or with *H. regardless of 
>weather the actual module is fitted to IC78 or not assuming the rom is 
>present.

I'm not sure.  However, you can jump into the ROM "blind" with *fx142,n
where n is the ROM number (15 is the right hand most socket, 14 the one
next to it, etc.)

The DFS isn't a language, of course, but jumping into it should produce
something on the screen, enough to indicate whether the ROM is working
or not.

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