Re: WDC Chip Order Update

[thoang@orion.oac.uci.edu (Trangdaithi Hoang)]

In article <39kqhj$oif@blackice.winternet.com>,
Frank M. Lin <fmlin@icicle.winternet.com> wrote:

>2. My new 14 MHz does not work properly even at 12.5 MHz.  It crashes
>more often than the engineering sample (paid $100 for it about 2
>years ago) I have.  One other friend's does not even work at all.  
>
>There are couple of success stories, of course.  Give me some time, and
>I will try to get more data/info...

I don't have any hard data, but my hunch is that the new 14 MHz WDC
65c816 is manufactured using .8 micron process which means less
output drive capability on the I/O lines (data, address, etc) than
the Engineering part manufactured using probably 1 micron process.
This could explain why the Engineering part appears to work better
than the new 14 MHz part on an unmodified accelerator.  Buffering
the I/O lines should help.