19 Mar
2007
19 Mar
'07
5:37 p.m.
Brad wrote....
Is the rx02 controller a dma device? I'm probably
wrong but I don't
think I've put it in slots where the NPR was removed.
RX11 (RX01, M7846) is
programmed I/O. RX211 (RX02, M8256) can use DMA via
non processor request. So... NPR jumper needs to be removed for my M8256.
I checked tonight, and powering them both up (RL02 & RX02) before the cpu
makes no difference. If the RX02 is powered on when the load button is hit
on the RL02, the RL02 will fault just after spinup. If the RX02 is powered
off, the RL02 doesn't fault at any time and runs just fine.
My M8256 is set at address 177170, vector 264, priority BR5. The M7762 is
set at address 174400, vector 160, priority BR5. I'm assuming both at BR5
isn't a problem?
Jay