Corrected extfifo code so that all registers that are on SRAM signals are packed into IOBs

Explcit drives and skews added to GPIO pins

Corrected minor error in FIFO logic that showed data avail internally incorrectly

1 files changed, 32 insertions, 32 deletions

diff --git a/usrp2/top/u2_rev3/u2_rev3.ucf b/usrp2/top/u2_rev3/u2_rev3.ucf
index 82d879446..bf9569fe4 100644
--- a/usrp2/top/u2_rev3/u2_rev3.ucf
+++ b/usrp2/top/u2_rev3/u2_rev3.ucf
@@ -264,22 +264,22 @@ NET "sdi_tx_adc"  LOC = "J4"  ;
 NET "sen_tx_dac"  LOC = "H4"  ; 
 NET "sclk_tx_dac"  LOC = "J5"  ; 
 NET "sdi_tx_dac"  LOC = "J6"  ; 
-NET "io_tx[0]"  LOC = "K4"  ;
-NET "io_tx[1]"  LOC = "K3"  ;
-NET "io_tx[2]"  LOC = "G1"  ;
-NET "io_tx[3]"  LOC = "G5"  ;
-NET "io_tx[4]"  LOC = "H5"  ;
-NET "io_tx[5]"  LOC = "F3"  ;
-NET "io_tx[6]"  LOC = "F2"  ;
-NET "io_tx[7]"  LOC = "F5"  ;
-NET "io_tx[8]"  LOC = "G6"  ;
-NET "io_tx[9]"  LOC = "E2"  ;
-NET "io_tx[10]"  LOC = "E1"  ;
-NET "io_tx[11]"  LOC = "E3"  ;
-NET "io_tx[12]"  LOC = "F4"  ;
-NET "io_tx[13]"  LOC = "D2"  ;
-NET "io_tx[14]"  LOC = "D4"  ;
-NET "io_tx[15]"  LOC = "E4"  ;
+NET "io_tx[0]"  LOC = "K4"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[1]"  LOC = "K3"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[2]"  LOC = "G1"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[3]"  LOC = "G5"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[4]"  LOC = "H5"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[5]"  LOC = "F3"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[6]"  LOC = "F2"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[7]"  LOC = "F5"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[8]"  LOC = "G6"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[9]"  LOC = "E2"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[10]"  LOC = "E1"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[11]"  LOC = "E3"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[12]"  LOC = "F4"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[13]"  LOC = "D2"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[14]"  LOC = "D4"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_tx[15]"  LOC = "E4"   |DRIVE = 12  |SLEW = FAST ;
 NET "sen_rx_db"  LOC = "D22"  ; 
 NET "sclk_rx_db"  LOC = "F19"  ; 
 NET "sdo_rx_db"  LOC = "G20"  ; 
@@ -291,22 +291,22 @@ NET "sdi_rx_adc"  LOC = "H22"  ;
 NET "sen_rx_dac"  LOC = "J18"  ; 
 NET "sclk_rx_dac"  LOC = "J19"  ; 
 NET "sdi_rx_dac"  LOC = "J21"  ; 
-NET "io_rx[0]"  LOC = "L21"  ;
-NET "io_rx[1]"  LOC = "L20"  ;
-NET "io_rx[2]"  LOC = "L19"  ;
-NET "io_rx[3]"  LOC = "L18"  ;
-NET "io_rx[4]"  LOC = "L17"  ;
-NET "io_rx[5]"  LOC = "K22"  ;
-NET "io_rx[6]"  LOC = "K21"  ;
-NET "io_rx[7]"  LOC = "K20"  ;
-NET "io_rx[8]"  LOC = "G22"  ;
-NET "io_rx[9]"  LOC = "G21"  ;
-NET "io_rx[10]"  LOC = "F21"  ;
-NET "io_rx[11]"  LOC = "F20"  ;
-NET "io_rx[12]"  LOC = "G19"  ;
-NET "io_rx[13]"  LOC = "G18"  ;
-NET "io_rx[14]"  LOC = "G17"  ;
-NET "io_rx[15]"  LOC = "E22"  ;
+NET "io_rx[0]"  LOC = "L21"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[1]"  LOC = "L20"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[2]"  LOC = "L19"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[3]"  LOC = "L18"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[4]"  LOC = "L17"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[5]"  LOC = "K22"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[6]"  LOC = "K21"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[7]"  LOC = "K20"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[8]"  LOC = "G22"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[9]"  LOC = "G21"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[10]"  LOC = "F21"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[11]"  LOC = "F20"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[12]"  LOC = "G19"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[13]"  LOC = "G18"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[14]"  LOC = "G17"   |DRIVE = 12  |SLEW = FAST ;
+NET "io_rx[15]"  LOC = "E22"   |DRIVE = 12  |SLEW = FAST ;
 
 NET "clk_to_mac" TNM_NET = "clk_to_mac";
 TIMESPEC "TS_clk_to_mac" = PERIOD "clk_to_mac" 8 ns HIGH 50 %;