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From: Kuoping Hsu<kuoping@s...>
Date: Thu Sep 2 15:50:30 CEST 2004
Subject: [openrisc] l.macrc problem.
Dear All,

In the OpenRISC 1000 architecture manual, it defines the l.macrc as follow,

Format:
l.macrc rD

Description:
blah blah........

32-bit Implementation:
rD[31:0] <- MACLO[31:0]
MACLO[31:0], MACHI[31:0] <- 0

But I found the real implementation (both of RTL code and or1ksim) is,

rD[31:0] <- (MACHI, MACLO) [59:28]
MACLO[31:0], MACHI[31:0] <- 0

I do not think the RTL code and or1ksim take the same mistake. Which implementation is correct?

Kuoping