Subject: Re: Help Needed with ZIP GS Switch 2 Settings From: supertimer@aol.com (Supertimer) Newsgroups: comp.sys.apple2 Lines: 33 NNTP-Posting-Host: ladder06.news.aol.com X-Admin: news@aol.com Date: 07 Aug 1999 08:26:23 GMT References: <19990806192032.01572.00000934@ng-cg1.aol.com> Organization: AOL http://www.aol.com Message-ID: <19990807042623.10000.00008888@ng-fa1.aol.com> sirthomas@aol.comyadayada (SirThomas) wrote: >A point in the right direction and a little experimentation. What else would >one expect for an Apple II hardware card circa 1988? :) Thanks! Hello. Well, the design may have been circa 1988, but different Zip cards have different processors, it seems. What is the speed of your Zip GS? Any Zip GS can be easily sped of by adding a new 65C816 chip rated at 14Mhz (or 20Mhz) from WDC (or CMD) and a new oscillator to clock the chip, but some Zip GS units come with processors that can be easily overclocked by just changing the oscillator. Wayne Stewart pointed out that he sped up his Zip GS to super fast speeds by overclocking his 8Mhz CPU. 8Mhz is significant because WDC now makes two CPUs of the new design, an 8Mhz one and a 14Mhz one. Interesting thing is that the 8Mhz version can usually be overclocked. The design of the new chip is very good, much better than the older ones. To see if you have the good chip, read the printing on the CPU. If it is WDC65C816PL-xx (where XX is the Mhz) you have the older design and are unlikely to overclock it much. May be possible to overclock a Mhz or two, but not like the new design. The new design is identified with an extra S in the name. WDC65C816SPL-xx where xx is the Mhz rating (either 8 or 14). S stands for Sanyo which WDC commisioned to redesign the chip. If you have a Sanyo chip, go ahead and put in a faster oscillator to pump up the speed. You could very likely get the full 15Mhz with the 8Mhz rated chip as long as it is of the new (Sanyo re-) design.