Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!usc!jarthur!nntp-server.caltech.edu!toddpw
From: toddpw@nntp-server.caltech.edu (Todd P. Whitesel)
Newsgroups: comp.sys.apple2
Subject: Re: C language, RAM5 memory question
Message-ID: <1990Nov2.051846.26439@nntp-server.caltech.edu>
Date: 2 Nov 90 05:18:46 GMT
References: <1990Oct30.201113.31554@wpi.WPI.EDU>
Organization: California Institute of Technology, Pasadena
Lines: 13

greyelf@wpi.WPI.EDU (Michael J Pender) writes:
>I load the address I want into meadrs low, mid and high, and then try a 
>read command from medata.  But I get garbage on performing the read.
>I want to know if I have to do a protocol read call first, then just
>sequentially access the card....

You shouldn't need to call the firmware at all. But at least on the RamFactor,
an access to CnXX is all you need to do before you set up the low/mid/high
address and read/write the data. This is because a reset disables the c08x
registers and an access to CnXX enables them.

Todd Whitesel
toddpw @ tybalt.caltech.edu