🚀 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"

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