Date   : Fri, 04 Nov 2005 08:49:34 GMT
From   : Pete Turnbull <pete@...>
Subject: Re: BBC using 3.5 high density format

On Nov 4 2005,  0:20, Jonathan Graham Harston wrote:

> However, the BBC Master runs at 3MHz, so a 41-cycle NMI routine
> will be executed in 13.6us - easily enough to collect a byte every
> 16us, and just enough allowing for jitter down to 14.5us.

Perhaps you're confusing the Master 128 with the Turbo or a 6502 Second
Processor.  The second processors do run at 3MHz, but the CPU and DRAM
clock in the Master is only 2MHz.

-- 
Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York