*updating* 8088's

Sridhar Ayengar ploopster at gmail.com
Wed Nov 21 17:22:12 CST 2007


Chuck Guzis wrote:
> On 20 Nov 2007 at 14:47, Chris M wrote:
> 
>>  to what degree was it homebuilt? Do you mean simply
>> assembled from parts? Who made the mobo if that was
>> the case. I only know of 1 non-8088 mobo (of course
>> there could have been others). 
> 
> The V30 was not an "upgrade" in the traditional sense--it was a pin-
> for-pin CMOS replacement for the 8086.  Because of some internal 
> architectural features, it ran somewhat faster than an 8086 of the 
> same clock speed and implemented many of the 186 instruction set 
> additions.  It also had an emulation mode for running 8080 code.
> 
> There were more 8086 mobos than you might imagine.  Consider, for 
> example, the Stearns PC.  Since there was a CMOS 80C86 available 
> before the 80C88, the 8086 also found its way into several laptops.

Or the rather sizeable number of IBM PS/2 Model 25s and 30s.

Peace...  Sridhar



More information about the cctalk mailing list