Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!paperboy!hsdndev!cmcl2!adm!smoke!gwyn
From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.sys.apple2
Subject: Re: apple memory card
Message-ID: <16344@smoke.brl.mil>
Date: 6 Jun 91 02:12:05 GMT
References: <1991Jun5.051341.196@CAM.ORG>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 17

In article <1991Jun5.051341.196@CAM.ORG> gammal@CAM.ORG (Michael Gammal) writes:
>I don't know why this is so, but I have a 1 meg //e apple card made by apple
>that states not to plug it into slot 3, and when i load such programs as 
>proterm...it will not give me more memory than standard.....i find this
>strange.... any reason why?

Sounds like a "RAM disk emulator", which generally is accessed as ProDOS
volume name /RAM just like a small, fast disk drive.  Access to such a
device is radically different from access to the extended memory card
used in the //e's auxiliary memory slot, which permits expansion up to
128KB (configured as two 64KB address spaces of which only one is
accessible at a time, requiring a call to firmware to switch to the
other address space).  There is no practical way to use the /RAM memory
as "main memory" like the auxiliary memory slot's memory.  Some
applications can use the /RAM memory to hold data, but to do so they must
use different access methods than for main memory; many applications
don't bother.