New megabyte Apple card? [message #268706] |
Tue, 03 December 1985 15:26 |
neves
Messages: 21 Registered: May 2013
Karma: 0
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Junior Member |
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Article-I.D.: uwai.317
Posted: Tue Dec 3 15:26:35 1985
Date-Received: Thu, 5-Dec-85 07:08:31 EST
Distribution: net
Organization: U of Wisconsin CS Dept
Lines: 14
Does anyone know how the new megabyte Apple card works? Since it does
not plug into the auxiliary slot it looks like it is not similar to
the Ramworks card. Because it works on the II+ I assume that it has
some firmware that one can use to make requests for chunks of memory
(like 256 byte chunks). Is this true? Does it have any hooks for
other processors?
--
David Neves
Computer Sciences Department
University of Wisconsin-Madison
Usenet: {allegra,heurikon,ihnp4,seismo,uwm-evax}!uwvax!neves
Arpanet: neves@uwvax
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Re: New megabyte Apple card? [message #268723 is a reply to message #268706] |
Fri, 06 December 1985 10:31 |
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Originally posted by: faubel@apollo.uucp (Ken Faubel)
Article-I.D.: apollo.2a905ed0.4237
Posted: Fri Dec 6 10:31:27 1985
Date-Received: Sat, 7-Dec-85 20:49:43 EST
References: <317@uwai.UUCP>
Organization: Apollo Computer, Chelmsford, Mass.
Lines: 27
I have one of the new "Apple Extended Memory Cards" and I am very impressed. Apple did
the right thing when the choose to put it into a regular ][, ][+, //e card slot. Even
though I have a //e, I am pleased to see the commitment to the older machines. The new
card has 32 RAM sockets of which 8 come filled with 256K chips for $299.00. For about
$75.00 (mail order) you can populate the rest of the board and have a full megabyte. The
card also has a large chip carrier with what looks like a 64 pin package in it. This
handles the address decoding and the firmware. For most purposes it looks like a PRODOS
block device. As for the operation, it supports DOS 3.3, ProDos, and Apple Pascal
(version 1.3 only).
From DOS 3.3 all you do is type IN#n where n is the slot number and the card is set
to work like a RAM drive. DOS 3.3 can only use 512K according to the manual. To use
the RAM drive just refer to it as drive 1 in slot n.
To use PRODOS all you have to do is use the formatter on slot n and away you
go. The signature byte shows that it is a PROFILE device. After loading the system
files into the card I typed PR#4 (my card is in slot 4) and in less than two seconds
it was waiting for input.
I am waiting to get the new Pascal system so that I can load the entire operating
system onto the card and not have to wait for the disk any more.
There are interfaces to the card that let programs like Appleworks use the RAM
directly but this is not specified in the small manual that came with the card. I
have also heard rumurs about a 68000 card due out from Apple that is supposed to
access the memory on this card. (There are no external jacks or plugs on the card
so all access must use the slot interface to the mother board.)
Has anybody else heard about a 68K product or a //x machine.
Ken Faubel decvax!wanginst!apollo!faubel
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Re: New megabyte Apple card? [message #279747 is a reply to message #268706] |
Sun, 08 December 1985 22:50 |
RALPHW[1][2]
Messages: 8 Registered: December 1985
Karma: 0
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Junior Member |
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Article-I.D.: ius2.256
Posted: Sun Dec 8 22:50:58 1985
Date-Received: Wed, 11-Dec-85 03:04:31 EST
References: <317@uwai.UUCP> <2a905ed0.4237@apollo.uucp>
Organization: Carnegie-Mellon University, CS/RI
Lines: 21
In article <2a905ed0.4237@apollo.uucp> faubel@apollo.uucp (Ken Faubel) writes:
...
> Has anybody else heard about a 68K product or a //x machine.
All I've heard about the next Apple // is that the case will be the same color
as the //c. A 68020 coprocessor card would be nice, but it won't mean much
unless they provide a sensible bitmap graphics mode with it.
Maybe an Apple // with a 680x0 processor, Unidisks & Hard disk, a sensible
bitmap and a few Meg of memory will be another of the 'future Macs' Apple's
talking about. That would be a machine work buying, since I could run
Apple //, Mac, and probably even Unix applications on it...
(And with z-80/HD64180 and 8088/80286/80386 coprocessor cards, I could even
run CP/M and MS-DOS applications. Talk about disk format nightmares!)
- Ralph
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