On Thu, Nov 29, 2012 at 9:13 PM, Peter Gavin <[email protected]> wrote: > Hmm, looking at the current draft at > https://www.dropbox.com/s/jsavdj0zve3i7v0/openrisc-arch-1.0-draft.pdf > > Are we accepting my proposal to change the l.mac instructions so they no > longer truncate the product? If we do that the multiplier part of the mac > cannot overflow, only the adder.
That's the plan, put the MAC/multiplication stuff in, it looks correct. Regarding overflow, you're right, so I'll remove the OV/CYMACMULE bits. > > -Pete > > On Thu, Nov 29, 2012 at 4:08 PM, Peter Gavin <[email protected]> wrote: >> >> On Thu, Nov 29, 2012 at 3:37 PM, Julius Baxter <[email protected]> >> wrote: >>> >>> >>> Fair call. Check it out: >>> >>> >>> http://opencores.org/or1k/Architecture_Specification#Control_of_Carry_and_Overflow_Flags_and_Exceptions >> >> >> Perfect :) >> >>> >>> If people are happy with this I'll roll another arch spec draft, which >>> should be close to, if not, the final 1.0 version. >> >> >> Looks great, I'm happy with all of it :) Cool. I shall whip up a new arch spec. Julius _______________________________________________ OpenRISC mailing list [email protected] http://lists.openrisc.net/listinfo/openrisc
