28 Oct
2015
28 Oct
'15
1:46 p.m.
On Wed, Oct 28, 2015 at 03:40:46PM -0500, Ben Sinclair wrote:
Well I just figured out something important...The
switch numbers on my
board backwards! I was going over the docs again, and noticed that MSB
and LSB in their board diagram were on the wrong sides, compared to
the switch numbers referenced on the next page. I'm not sure if that's
just the way it is, or maybe someone replaced my switches at some
point. After changing my switches I can now read 774400, which gives
me 144201.
The VRLAC0 diagnostic now goes further, but it thinks something is
wrong. Now of course I have no idea what it thinks is wrong here!
Bit 11 of the CSR seems to be stuck on. That's the "bad CRC" (or write
check error) bit ... definitely shouldn't be on after a bus init.
Maybe look at some other registers to see if that bit's on everywhere
(possibly bad bus xcvr if so), otherwise some other insanity?
John Wilson
D Bit