Re: Unixisms on top of P8?

[BLuRry <brendan.robert@gmail.com>]

On Wednesday, December 19, 2012 7:00:19 PM UTC-6, Bill Buckels wrote:
> "BLuRry" <brendan.robert@gmail.com> wrote:
> 
> >There is one softswitch that cannot be read AFAIK, LCWRITE (which indicates 
> 
> >if writes to the language card are enabled or not).  That could make things 
> 
> >tricky if you're trying to keep the state 100% correct.  Of course, this is 
> 
> >one of those things I would totally love to be wrong about. (like if 
> 
> >someone said: "Oh it's not well documented but you can read it at c013" 
> 
> >that would be great!)
> 
> 
> 
> 0x12  - RDLCRAM - Read LCRAM switch state
> 
> 
> 
> http://vinace.sourceforge.net/en-x1290.html#UnitLanguageCard
> 
> 
> 
> I don't profess to know anything about this topic... I just did a quick 
> 
> google on apple II LCWRITE and this came-up...
> 
> 
> 
> Bill

Thanks for the info -- it seems that c012 reads the LCRAM switch which determines if ROM or LC RAM will be read.  I'm talking about LCWRITE which is a separate mapping for write operations instead of reads.  There's no way to know if LCWRITE is set or unset from the 6502 side of things.

-B