Subject: Re: New chip in TWGS From: Tony Cianfaglione Newsgroups: comp.sys.apple2,comp.sys.apple2.marketplace Date: Sun, 12 Sep 1999 16:08:49 -0300 Organization: ISINet, Nova Scotia Lines: 21 Message-ID: References: <7rf34r$iee$1@holly.prod.itd.earthlink.net> NNTP-Posting-Host: chebucto.ns.ca Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Complaints-To: postmaster@Dal.Ca NNTP-Posting-Date: 12 Sep 1999 19:08:51 GMT In-Reply-To: Xref: lobby comp.sys.apple2:88559 comp.sys.apple2.marketplace:30023 My -4 is doing 14.99999mhz so a -14 should be able to handle a faster oscillator. I'm running a 60 oscillator right now with no discernable problems. I have CDEV that allows you to set the speed of the TWGS on the fly. --------------------------------------------- On Sun, 12 Sep 1999, Herbert Fung wrote: > There isn't any setting other than Normal (1MHz), Fast (2.8MHz), and > TransWarp (7Mhz+) The TWGS speed is dependant on how fast your > oscillator is. The oscillator has to be 4X faster than the speed you want > to run at. So a 64MHz oscillator will give you 16MHz, which is the fastest > I've heard someone push a TWGS. > > The CPU itself can probably be pushed to 20MHz but according to others > you'll probably need faster than 15ns SRAMs. The fastest reliable speed > for stock TWGS's I think was 12.5MHz.