[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: $C00B location

Subject: Re: $C00B location
From: "John B. Matthews" <nospam@nospam.com>
Date: Mon, 31 Jan 2005 03:34:21 GMT
Newsgroups: comp.sys.apple2
Organization: Road Runner High Speed Online http://www.rr.com
References: <1106967603.318481.80240@c13g2000cwb.googlegroups.com> <41FB675A.CEA538D7@buckeye-express.com> <1107139948.862046.251740@c13g2000cwb.googlegroups.com>
User-agent: MT-NewsWatcher/3.4 (PPC Mac OS X)
Xref: g2news1.google.com comp.sys.apple2:7715

In article <1107139948.862046.251740@c13g2000cwb.googlegroups.com>,
 pererasanjaya@gmail.com wrote:

> can someone explain SETSLOTC3ROM?
> thanks

On an Apple //e with 80-column card or a IIgs, some of the screen 
firmware (which handles PR#3, et.) is not on a card; it's internal. 
Two soft switches control whether the memory map sees the card in 
slot 3 or the 80-column firmware:

CLRC3ROM = $C00A ;use internal Slot 3 ROM (WR-only)
SETC3ROM = $C00B ;use external Slot 3 ROM (WR-only)

-- 
John
jmatthews at wright dot edu
www dot wright dot edu/~john.matthews/

References:
- $C00B location
  - From: pererasanjaya@gmail.com
- Re: $C00B location
  - From: "Paul R. Santa-Maria" <paulrsm@buckeye-express.com>
- Re: $C00B location
  - From: pererasanjaya@gmail.com

Prev by Date: Re: CallApple.org (A.P.P.L.E.) status?
Next by Date: Re: $C00B location
Previous by thread: Re: $C00B location
Next by thread: Re: $C00B location
Index(es):
- Date
- Thread