On Dec 25, 18:23, Tony Duell wrote:
> > TT is DRV AC L and VV is RX DMA INTR L. These are the extra
connections
> > used by RX211 and RXV21 controllers, and I expect RX28 also uses RX DMA
> > INTR L.
>
> I don't think it doea.
>
> I believe that The RX8e card and the RX28 card are the same module -- an
> M8357.
They are the same -- I misread a diagram in the RX02 manual, which made me
think the M8357 working as an RX28 could do DMA transfers. It can't. Only
the RX211 and RXV21 use RX DMA INTR L.
I'v just pulled the printset of that card (which, alas, says
> nothing about the DB25 adapter), and the only pins shown on the schematic
> are
>
> D : RX RUN L
> H : RX INIT L
> J : RX ERROR L
> T : RX TRANSFER REQEUST L
> X : RX DONE L
> BB : RX DATA L
> FF : RX 12 BIT L
> RR : RX OUT L
> LL : RX SHIFT L
Interesting. I think where you wrote "H : RX INIT L", you mean "N". H is
a ground, and the RX02 printset clearly shows N as RX INIT L. That agrees
with the tracks I can see on the M7744.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Received on Mon Dec 25 2000 - 17:20:31 GMT