Date   : Mon, 16 Jan 2017 21:40:58 +0000
From   : richard.broadhurst@... (Richard Broadhurst)
Subject: Asking for directions in setting mode 7 screen to

On the model B, setting R12R13 in mode 7:
Code:
&2000..&23FF displays &3C00+R12R13 wrapping after &3FFF to &3C00
&2400..&27FF displays &3C00+R12R13 wrapping after &3FFF to &7C00
&2800..&23FF displays &7C00+R12R13 wrapping after &7FFF to &7C00
&2B00..&23FF displays &7C00+R12R13 wrapping after &7FFF to &3C00
This does not work on beebem, b-em, jsbeeb or a master.

Tricky.

On 16 January 2017@..., nicola giacobbe <nicolagiacobbe@...>
wrote:

> Hello everybody,
>
> sorry for bothering for what has probably already answered but I have
> searched long before giving up.
>
> I have many times found reference to the possibility to set the MODE 7
> starting address to &3C00 even on a BBC B but I could not collect any
> reference to example code and/or any theoretical info.
>
>
> Is there any BBC expert willing to tell me how to do it? There is a
> (closed) thread on stardot (http://stardot.org.uk/forums/
> viewtopic.php?t=11884&start=30) hinting at the possibility but I would
> try to find some information before asking to tricky how/if he did it.
>
>
>
>
>
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