test bench cleanup

diff --git a/verilog/dv/firmware/crt.S b/verilog/dv/firmware/crt.S
index d50cb6b..c1ffa33 100644
--- a/verilog/dv/firmware/crt.S
+++ b/verilog/dv/firmware/crt.S

@@ -60,7 +60,7 @@
 
     // Timer init
     li      t0, mtime_ctrl
-    li      t1, (1 << YCR1_MTIME_CTRL_EN)   // enable, use internal clock
+    li      t1, (1 << YCR_MTIME_CTRL_EN)   // enable, use internal clock
     sw      t1, (t0)
     li      t0, mtime_div
     li      t1, (100-1)                     // divide by 100

diff --git a/verilog/dv/firmware/riscv_csr_encoding.h b/verilog/dv/firmware/riscv_csr_encoding.h
index 09f5abb..bf7736a 100644
--- a/verilog/dv/firmware/riscv_csr_encoding.h
+++ b/verilog/dv/firmware/riscv_csr_encoding.h

@@ -1486,4 +1486,4 @@
 DECLARE_CAUSE("store page fault", CAUSE_STORE_PAGE_FAULT)
 #endif
 
-#include "ycr1_specific.h"
+#include "ycr_specific.h"

diff --git a/verilog/dv/firmware/ycr1_specific.h b/verilog/dv/firmware/ycr_specific.h
similarity index 88%
rename from verilog/dv/firmware/ycr1_specific.h
rename to verilog/dv/firmware/ycr_specific.h
index 4c8c583..04201e5 100644
--- a/verilog/dv/firmware/ycr1_specific.h
+++ b/verilog/dv/firmware/ycr_specific.h

@@ -16,8 +16,8 @@
 // SPDX-FileContributor: Dinesh Annayya <dinesha@opencores.org>           ////
 //////////////////////////////////////////////////////////////////////////////
 
-#ifndef __YCR1__SPECIFIC
-#define __YCR1__SPECIFIC
+#ifndef __YCR__SPECIFIC
+#define __YCR__SPECIFIC
 
 #define mcounten        0x7E0
 
@@ -29,10 +29,10 @@
 #define mtimecmp        0x0C490010
 #define mtimecmph       0x0C490014
 
-#define YCR1_MTIME_CTRL_EN          0
-#define YCR1_MTIME_CTRL_CLKSRC      1
+#define YCR_MTIME_CTRL_EN          0
+#define YCR_MTIME_CTRL_CLKSRC      1
 
-#define YCR1_MTIME_CTRL_WR_MASK     0x3
-#define YCR1_MTIME_DIV_WR_MASK      0x3FF
+#define YCR_MTIME_CTRL_WR_MASK     0x3
+#define YCR_MTIME_DIV_WR_MASK      0x3FF
 
 #endif // _YCR1__SPECIFIC

diff --git a/verilog/dv/user_uart/user_uart.c b/verilog/dv/user_uart/user_uart.c
index 99e0204..4a82878 100644
--- a/verilog/dv/user_uart/user_uart.c
+++ b/verilog/dv/user_uart/user_uart.c

@@ -34,7 +34,8 @@
 
     while(1) {
        // Check UART RX fifo has data, if available loop back the data
-       if(reg_mprj_uart_reg8 != 0) { 
+       // Also check txfifo is not full
+       if((reg_mprj_uart_reg8 != 0) && ((reg_mprj_uart_reg4 & 0x1) != 0x1)) { 
 	   reg_mprj_uart_reg5 = reg_mprj_uart_reg6;
        }
     }