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authorPaul Selkirk <paul@psgd.org>2015-11-12 16:46:20 -0500
committerPaul Selkirk <paul@psgd.org>2015-11-12 17:18:43 -0500
commita2b7e6a544562fbe48814feedebd9119b92cea57 (patch)
tree89437b9fdcc428479f8472a3753e56e70f6269f7
parent9ed8ee7596023a6f4e43d8468bbdd0473c6570ed (diff)
Change reset to active-low.
-rw-r--r--src/rtl/eim.v6
-rw-r--r--src/rtl/eim_indicator.v4
-rw-r--r--src/rtl/eim_regs.v2
3 files changed, 5 insertions, 7 deletions
diff --git a/src/rtl/eim.v b/src/rtl/eim.v
index dcbd226..2a07a14 100644
--- a/src/rtl/eim.v
+++ b/src/rtl/eim.v
@@ -14,7 +14,7 @@ module eim
// system clock and reset
input wire sys_clk,
- input wire sys_rst,
+ input wire sys_rst_n,
// EIM interface to cores
output wire [16: 0] sys_eim_addr,
@@ -27,8 +27,6 @@ module eim
output wire led_pin // LED on edge close to the FPGA.
);
- // XXX add NAME0/NAME1/VERSION
-
//----------------------------------------------------------------
// EIM Arbiter
//
@@ -66,7 +64,7 @@ module eim
eim_indicator led
(
.sys_clk(sys_clk),
- .sys_rst(sys_rst),
+ .sys_rst_n(sys_rst_n),
.eim_active(sys_eim_wr | sys_eim_rd),
.led_out(led_pin)
);
diff --git a/src/rtl/eim_indicator.v b/src/rtl/eim_indicator.v
index cf9751d..b665ea5 100644
--- a/src/rtl/eim_indicator.v
+++ b/src/rtl/eim_indicator.v
@@ -39,7 +39,7 @@
module eim_indicator
(
input wire sys_clk,
- input wire sys_rst,
+ input wire sys_rst_n,
input wire eim_active,
output wire led_out
);
@@ -56,7 +56,7 @@ module eim_indicator
always @(posedge sys_clk)
//
- if (sys_rst) cnt <= {CNT_BITS{1'b0}};
+ if (!sys_rst_n) cnt <= {CNT_BITS{1'b0}};
else if (cnt > {CNT_BITS{1'b0}}) cnt <= cnt - 1'b1;
else if (eim_active) cnt <= {CNT_BITS{1'b1}};
diff --git a/src/rtl/eim_regs.v b/src/rtl/eim_regs.v
index 6372045..2f4c3df 100644
--- a/src/rtl/eim_regs.v
+++ b/src/rtl/eim_regs.v
@@ -39,7 +39,7 @@ module comm_regs
(
// Clock and reset.
input wire clk,
- input wire rst,
+ input wire reset_n,
// Control.
input wire cs,