Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watmath!clyde!rutgers!sunybcs!bingvaxu!leah!itsgw!batcomputer!halp
From: halp@batcomputer.UUCP
Newsgroups: comp.sys.apple
Subject: Re: AppleFest 1987
Message-ID: <2775@batcomputer.tn.cornell.edu>
Date: Sat, 31-Oct-87 10:29:36 EST
Article-I.D.: batcompu.2775
Posted: Sat Oct 31 10:29:36 1987
Date-Received: Mon, 2-Nov-87 06:48:34 EST
References: <953@percival.UUCP> <31973@sun.uucp> <2050@aramis.rutgers.edu>
Reply-To: halp@tcgould.tn.cornell.edu (Bruce P. Halpern)
Distribution: na
Organization: Cornell Theory Center, Cornell University, Ithaca NY
Lines: 41
Keywords: acceleration 65c02 memory
Summary: Zip Chip and TRANSWARP (AE) differ re:memory acceleration?

In article <2050@aramis.rutgers.edu> friedman@aramis.rutgers.edu (Gadi ) writes:
>In article <31973@sun.uucp> fiddler%concertina@Sun.COM (Steve Hix) writes:
>
>> > The Zip Chip by Zip Technolgies is a pin compatable chip that replaces the
>> > 65c02 in your IIe or IIc. Once installed your machine will run at a full 
>> > 4 meghertz speed.
>> Do they also change the system clock rate?  How do they keep from
>
>I read about this chip in the lates Nibble magazine.  (There is even
>a large ad by Zip Technologies.)   From what I remember, this chip
>contains an on-chip cache, and clock.  Internally, the chip runs at
>4 mhz, but it does all it's memory access at 1mhz.  Otherwise, you
>would have to replace all the motherboard logic to cope with the
>higher clockrate.
>

The Zip Chip approach is apparently quite different than Applied Engineering's 
TRANSWARP card. TRANSWARP supplies a 65C02 running a 3.6 MHz, and 256 of fast 
memory.  TRANSWARP accelerates everything, unless told not to. Dip switches 
allow devices connected to particular slots to run at a 1 mHz rate, while 
other stuff, such as all memory, goes at 3.6 MHz. Software commands also allow 
global decelleration to 1 or 1.7 MHz. 

I just received an add from Roger Coats (1-800-438-2883   0800-1700 PST) 
offering TRANSWARP with the 65C02 replaced with a 6xxxx (I don't have the 
ad in front of me), which is said to allow things that the 65C02 can't do, for 
< $200.


>-- 
>
>                                        Gadi
>uucp:   {ames, cbosgd, harvard, moss}!rutgers!aramis.rutgers.edu!friedman
>arpa:   FRIEDMAN@ARAMIS.RUTGERS.EDU


-- 
  |  Bruce P. Halpern  Psychology & Neurobiology & Behavior Cornell Ithaca |
  |  ARPA: halp@tcgould.tn.cornell.edu                                     |
  |  BITNET: HALP@CRNLTHRY      D57J@CORNELLA      D57J@CRNLVAX5           |
  |  PHONE: 607-255-6433    Uris Hall, Cornell U., Ithaca, NY 14853-7601   |