[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Apple II+'s 16K RAM Card
- Subject: Re: Apple II+'s 16K RAM Card
- From: aiiadict@gmail.com
- Date: 14 Apr 2005 07:22:51 -0700
- Complaints-to: groups-abuse@google.com
- In-reply-to: <Uum7e.1020$JJ2.254@newssvr12.news.prodigy.com>
- Injection-info: o13g2000cwo.googlegroups.com; posting-host=64.165.71.95; posting-account=wL7QqAwAAADveYas09gsbDvmMNiULH_b
- Newsgroups: comp.sys.apple2
- Organization: http://groups.google.com
- References: <Uum7e.1020$JJ2.254@newssvr12.news.prodigy.com>
- User-agent: G2/0.2
- Xref: g2news1.google.com comp.sys.apple2:10330
I don't think any RAM cards allow you to display data
that is stored in the Aux slot RAM.
bank switching from
$0000 - $BFFF
$C000 - $CFFF skipped, this is Hardware access area
$D000 - $FFFF
The video circuits are constantly reading RAM on motherboard to
display data to screen. The reason you cannot display must
be because there is some extra connection between the RAM
and video circuit on the MB? Michael M. mentioned in a post
a few months back that he thought he saw a modification that
could be made to aux cards to allow them to display data to
the screen.
Rich