diff --git a/makefile b/makefile
index ff888a7f9a0678469d5c190b41edfbbcb5a89b6a..5033f6b0f6490943a1b2b12ecee10c35f7c0d8e2 100644
--- a/makefile
+++ b/makefile
@@ -85,13 +85,13 @@ BOOTROM_BUILD_DIR ?= $(SOCLABS_PROJECT_DIR)/system/src/bootrom
 
 QUICKSTART ?= no
 
-NANOSOC_EXPANSION_REGION ?= yes
+ACCELERATOR ?= no
 
 # Simulator Defines
 DEFINES_VC  += $(MEM_INIT) +define+CORTEX_M0 +define+USE_TARMAC 
 
-ifeq ($(NANOSOC_EXPANSION_REGION),yes)
-	DEFINES_VC += +define+NANOSOC_EXPANSION_REGION
+ifeq ($(ACCELERATOR),yes)
+	DEFINES_VC += +define+ACCELERATOR_SUBSYSTEM
 endif
 
 # System Design Filelist
diff --git a/software/common/bootloader/bootloader.c b/software/common/bootloader/bootloader.c
index 233c44bfa1976c3117a3559df0e3d57253953089..fed5b51d7aad273e80b688cc12fb33391c2b0644 100644
--- a/software/common/bootloader/bootloader.c
+++ b/software/common/bootloader/bootloader.c
@@ -135,7 +135,7 @@ int main (void)
   // UART init
   UartStdOutInit();
 
-  UartPuts("\n\n\nSOCLABS: ARM Cortex-M0 nanosoc\n");
+  UartPuts("\n\n\nSoCLabs NanoSoC\n");
   FlashLoader();
   return 0;
 }
diff --git a/system/nanosoc_regions/imem_0/verilog/nanosoc_region_imem_0.v b/system/nanosoc_regions/imem_0/verilog/nanosoc_region_imem_0.v
index 672a0f134488ee7cce7911a17f6c2bca18256aef..fced8f0f4f88d0550551f4917bce6576633a58cf 100644
--- a/system/nanosoc_regions/imem_0/verilog/nanosoc_region_imem_0.v
+++ b/system/nanosoc_regions/imem_0/verilog/nanosoc_region_imem_0.v
@@ -37,7 +37,8 @@ module nanosoc_region_imem_0 #(
   );
 
     // SRAM Instantiation
-    sl_ahb_sram #(
+    // sl_ahb_sram #(
+    sl_ahb_rom #(
         .SYS_DATA_W (SYS_DATA_W),
         .RAM_ADDR_W (IMEM_RAM_ADDR_W),
         .RAM_DATA_W (IMEM_RAM_DATA_W),
diff --git a/xmprep.history b/xmprep.history
deleted file mode 100644
index d874832f4dc25350ecce97a6866465e20908eb2b..0000000000000000000000000000000000000000
--- a/xmprep.history
+++ /dev/null
@@ -1 +0,0 @@
-s1(22Jun2023:09:30:49):  xmprep +overwrite -f /home/dam1n19/accelerator-project/flist/project/system.flist -define ADP_FILE="/home/dam1n19/accelerator-project/nanosoc_tech/testcodes/adp_demo/adp.cmd" +define+CORTEX_M0 +define+USE_TARMAC +define+NANOSOC_EXPANSION_REGION +debug -timescale 1ps/1ps -top nanosoc_tb