Date   : Sun, 11 Sep 2005 12:01:11 +0100
From   : "Ian Wolstenholme" <BBCMailingList@...>
Subject: Re: checking ROMS.

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The purpose of *HELP is to give you a list of keywords which you
can use to find out more about installed ROMs.  *HELP won't show you
what banks are ROM, or sideways RAM, or show you in what ROM slot
a particular ROM is installed, unlike *ROMS and similar routines which
will give you this information.

The additional problem with *HELP is that if a particular ROM doesn't
respond to service call 9, then nothing will come up.  BASIC is a case in
point, it has a language entry point but no service entry point.  BASIC
wasn't given recognition in *HELP until the Master MOS 3.50 version.

Best wishes,


Ian
----- Original Message -----
From: Tim Matthews
To:  <bbc-micro@...>
Sent: Sun, 11 Sep 2005 11:35:00 +0100
Subject: RE: [BBC-Micro] Re: checking ROMS.

*dumb question*

what do all these fancy routines do that *help doesn't...?

'cuse my ignorance :-)

tim.

> -----Original Message-----
> From: Majordomo List Manager [mailto:majordomo@...] 
> On Behalf Of Jonathan Graham Harston
> Sent: 10 September 2005 23:30
> To: bbc-micro@...
> Subject: [BBC-Micro] Re: checking ROMS.
> 
> 
> > Message-ID: <2Yg+SDJLtsIDFwQ5@...>
>  
> Mike Tomlinson <mike@...> wrote:
> > In article <1126349255.6331.0.camel@...>, 
> Tom Drage 
> > <drage@...> writes
> > 
> > >Just wondering what the command for the BBC B is to list the 
> > >installed ROMs, I couldn't find it in the manual?
> > 
> > There isn't one.  You can use this little program:
>  
> Why the assembled machine code? You may as well just call OSRDRM
> direct:
>  
> >    FOR Y% TO 0 STEP -1
> Y$=RIGHT$("0"+STR$~Y%,2)
> >    PRINT Y$"> ";
> >    PRINT FNrom
> >    NEXT
> >    END
> >    DEF FNrom
> >    IF Y%?&2A1=0 := "(vacant)"
> >    A%=&8009
> >    a$=""
> >    REPEAT
> !&F6=A%:B%=(USR&FFB9)AND&FF
> IF B%>31 AND B%<127:a$=a$+CHR$B%
> >    A%=A%+1
> UNTIL B%=0
> >    :=a$
>  
> -- 
> J.G.Harston - jgh@... - mdfs.net/User/JGH
> BBC BASIC for Windows and Internationalisation
>   See http://mdfs.net/Software/BBCBasic/Windows/ProgTips
> 
> 

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