From: Sebastien Bourdeauducq <sebastien@milkymist.org>
Date: Tue, 11 Jun 2013 16:15:49 +0000 (+0200)
Subject: bus/lasmibus/Crossbar: support cba_shift=0
X-Git-Tag: 24jan2021_ls180~2099^2~558
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1ec1fb9ebe53c19bf5d1e2e4dfe1af8f3d4cad7c;p=litex.git

bus/lasmibus/Crossbar: support cba_shift=0
---

diff --git a/migen/bus/lasmibus.py b/migen/bus/lasmibus.py
index 18259d29..201a9f71 100644
--- a/migen/bus/lasmibus.py
+++ b/migen/bus/lasmibus.py
@@ -133,7 +133,10 @@ class Crossbar(Module):
 			cba_upper = cba_shift + controller_bits + bank_bits
 			self.comb += cba.eq(master.adr[cba_shift:cba_upper])
 			if cba_shift < rca_bits:
-				self.comb += rca.eq(Cat(master.adr[:cba_shift], master.adr[cba_upper:]))
+				if cba_shift:
+					self.comb += rca.eq(Cat(master.adr[:cba_shift], master.adr[cba_upper:]))
+				else:
+					self.comb += rca.eq(master.adr[cba_upper:])
 			else:
 				self.comb += rca.eq(master.adr[:cba_shift])