<p dir="ltr">Ah yes, you're correct. The Z80 ran the program and the 6502 then handled I/O.</p>
<p dir="ltr"><a href="https://en.wikipedia.org/wiki/Tube_%28BBC_Micro%29?wprov=sfla1">https://en.wikipedia.org/wiki/Tube_%28BBC_Micro%29?wprov=sfla1</a></p>
<br><div class="gmail_quote"><div dir="ltr">On Fri, 21 Oct 2016, 18:40 , <<a href="mailto:Valdis.Kletnieks@vt.edu">Valdis.Kletnieks@vt.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Fri, 21 Oct 2016 17:04:50 -0000, Laurence Rochfort said:<br class="gmail_msg">
<br class="gmail_msg">
> The BBC Micro which was 6502 based had an add on that let you connect a Z80<br class="gmail_msg">
> straight onto the same bus.<br class="gmail_msg">
<br class="gmail_msg">
If I remember correctly, that one was basically an either/or - you could<br class="gmail_msg">
boot the 6502, or the Z80, but you couldn't run both at the same time....<br class="gmail_msg">
</blockquote></div>