Steve, I tried to use fp assembly instructions (like lfd). But my assembler has problems and doesnt let me generate my binary. I'm sorry I couldnt properly get you... Should I make use of sw floating points..? That means, should I access 64-bit data only through 64-bit operations..?
Thanks and Regards Nebu --------- Original Message --------- DATE: Wed, 24 Sep 2003 13:31:50 From: Steven Blakeslee <[EMAIL PROTECTED]> >Are you sure you are not using software floating points? > >Subject: 64-bit Data Flash Access Problem [MPC8245] > > > >Hi >I have a set of 8 1GB data flash chips (Samsung) on an MPC8245 Ref. Board. >These are on a 64-bit bus-mode. > >-------DBUS_SIZ[0-1]:DBUS_SIZ[2] = 110b ------- > >All 8 chips are selected by a single chip select (RCS1). Trying a 32-bit >read from the Data Address Location after giving the Command to Access the >flash IDs, only 4 flashes on a common byte lane seem to be responding. >32-bit writes appear only on the DH[0-31] and not on DL[0-31]. > >I am not very clear as to: > >(a) How do we perform writes to send out data out on > all 64-bits of the bus..? >(b) How would we ideally access 64-bit data through 32- bit reads..? >(c) Or must we *have* 64- bit read/write > instructions..? > >many thanks in advance for any response .. > >Regards >Nebu > > >Need a new email address that people can remember >Check out the new EudoraMail at >http://www.eudoramail.com > > Need a new email address that people can remember Check out the new EudoraMail at http://www.eudoramail.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
