🚀 go-pugleaf

> > 
> >> 
> >> Can you get a 4.08 MHz accelerator for the Apple (which is what you'd need 
> >> for twice the speed of the C128)?  Last I heard no one's delivering 6502s in
> >> production quantity that are speced to run above 3MHz.
> > Most accelerators for the Apple // run at 3.6 mhz because it is a di     n
> > even division of the 14mhz system clock.  The 65C02 used is actually
> > a 4mhz chip (available from Rockwell, GTE or WDC).  I think that the
> > Western Design Center is getting production yields on 6mhz 65802's
> > which are pin compatible with the 65C02 and 65816's which are used
> > in the //gs.
> 
> 
> Not quite.  First of all, WDC doesn't make production silicon at all, I 
> think they may even farm out much of their prototype work.  GTE makes all
> of the 65SC816 parts; they've finally got the 4MHz part in reasonable 
> quantities, though they're still expensive.  I haven't heard anything 
> positive on anything faster from them.  Also, GTE only has 3MHz 65C02's
> in production quantities.  They can get you 4MHz parts, but these are
> hand picked 3MHz parts.  They're redesigning their 65C02 for real 4MHz 
> operation, and expect to have that ready by early '87.  WDC still doesn't
> have production quantities of any silicon product.  I'm not sure how fast
> Rockwell parts are working (of course, they only make 65C02 and 6502), 
> though Rockwell is in the process of de-emphasizing their 6502 lines in
> favor of 16 bit and greater chips (much to the approval of GTE, who's
> apparently firmly comitted to the 65C02 families as long as they're selling
> as well as they are).
> 
> > Rick
> -- 
> ============================================================================
> Dave Haynie	{caip,ihnp4,allegra,seismo}!cbmvax!daveh
> 		"Techno-Hippie, heathen, designing evil computers"
> 
> 	These opinions are my own, though if you try them out, and decide
> 	that you really like them, a small donation would be appreciated.

I burned out the 4mhz 65C02 in my accelerator over a year ago and bought
a replacement off the shelf for less than $12 (single unit) it was a 
Rockwell chip but the supplier said GTE was available too at the same
price, but he didn't have any in stock.  Bill Mensch said more than a 
year ago that the parts WDC was shipping were all 4mhz (even when 1 or
2 mhz were ordered), I don't know who manufactured these parts, but you
are right, WDC sends all of their fabrication work out.

Rick