diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3a50001..4f839b5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -217,6 +217,43 @@ set(RANDOMX_INCLUDE "${CMAKE_CURRENT_SOURCE_DIR}/src" CACHE STRING "RandomX Incl
 option(USE_HIDDEN_VISIBILITY "Include -fvisibility=hidden flag" OFF)
 set(RANDOMX_ARGON_MEMORY "" CACHE STRING "Set the RANDOMX_ARGON_MEMORY value")
 set(RANDOMX_DATASET_BASE_SIZE "" CACHE STRING "Set the RANDOMX_DATASET_BASE_SIZE value")
+set(RANDOMX_PROGRAM_SIZE "" CACHE STRING "Set the RANDOMX_PROGRAM_SIZE value")
+set(RANDOMX_PROGRAM_ITERATIONS "" CACHE STRING "Set the RANDOMX_PROGRAM_ITERATIONS value")
+set(RANDOMX_PROGRAM_COUNT "" CACHE STRING "Set the RANDOMX_PROGRAM_COUNT value")
+set(RANDOMX_SCRATCHPAD_L1 "" CACHE STRING "Set the RANDOMX_SCRATCHPAD_L1 value")
+set(RANDOMX_SCRATCHPAD_L2 "" CACHE STRING "Set the RANDOMX_SCRATCHPAD_L2 value")
+set(RANDOMX_SCRATCHPAD_L3 "" CACHE STRING "Set the RANDOMX_SCRATCHPAD_L3 value")
+set(RANDOMX_FREQ_IADD_RS "" CACHE STRING "Set the RANDOMX_FREQ_IADD_RS value")
+set(RANDOMX_FREQ_IADD_M "" CACHE STRING "Set the RANDOMX_FREQ_IADD_M value")
+set(RANDOMX_FREQ_ISUB_R "" CACHE STRING "Set the RANDOMX_FREQ_ISUB_R value")
+set(RANDOMX_FREQ_ISUB_M "" CACHE STRING "Set the RANDOMX_FREQ_ISUB_M value")
+set(RANDOMX_FREQ_IMUL_R "" CACHE STRING "Set the RANDOMX_FREQ_IMUL_R value")
+set(RANDOMX_FREQ_IMUL_M "" CACHE STRING "Set the RANDOMX_FREQ_IMUL_M value")
+set(RANDOMX_FREQ_IMULH_R "" CACHE STRING "Set the RANDOMX_FREQ_IMULH_R value")
+set(RANDOMX_FREQ_IMULH_M "" CACHE STRING "Set the RANDOMX_FREQ_IMULH_M value")
+set(RANDOMX_FREQ_ISMULH_R "" CACHE STRING "Set the RANDOMX_FREQ_ISMULH_R value")
+set(RANDOMX_FREQ_ISMULH_M "" CACHE STRING "Set the RANDOMX_FREQ_ISMULH_M value")
+set(RANDOMX_FREQ_IMUL_RCP "" CACHE STRING "Set the RANDOMX_FREQ_IMUL_RCP value")
+set(RANDOMX_FREQ_INEG_R "" CACHE STRING "Set the RANDOMX_FREQ_INEG_R value")
+set(RANDOMX_FREQ_IXOR_R "" CACHE STRING "Set the RANDOMX_FREQ_IXOR_R value")
+set(RANDOMX_FREQ_IXOR_M "" CACHE STRING "Set the RANDOMX_FREQ_IXOR_M value")
+set(RANDOMX_FREQ_IROR_R "" CACHE STRING "Set the RANDOMX_FREQ_IROR_R value")
+set(RANDOMX_FREQ_IROL_R "" CACHE STRING "Set the RANDOMX_FREQ_IROL_R value")
+set(RANDOMX_FREQ_ISWAP_R "" CACHE STRING "Set the RANDOMX_FREQ_ISWAP_R value")
+set(RANDOMX_FREQ_FSWAP_R "" CACHE STRING "Set the RANDOMX_FREQ_FSWAP_R value")
+set(RANDOMX_FREQ_FADD_R "" CACHE STRING "Set the RANDOMX_FREQ_FADD_R value")
+set(RANDOMX_FREQ_FADD_M "" CACHE STRING "Set the RANDOMX_FREQ_FADD_M value")
+set(RANDOMX_FREQ_FSUB_R "" CACHE STRING "Set the RANDOMX_FREQ_FSUB_R value")
+set(RANDOMX_FREQ_FSUB_M "" CACHE STRING "Set the RANDOMX_FREQ_FSUB_M value")
+set(RANDOMX_FREQ_FSCAL_R "" CACHE STRING "Set the RANDOMX_FREQ_FSCAL_R value")
+set(RANDOMX_FREQ_FMUL_R "" CACHE STRING "Set the RANDOMX_FREQ_FMUL_R value")
+set(RANDOMX_FREQ_FDIV_M "" CACHE STRING "Set the RANDOMX_FREQ_FDIV_M value")
+set(RANDOMX_FREQ_FSQRT_R "" CACHE STRING "Set the RANDOMX_FREQ_FSQRT_R value")
+set(RANDOMX_FREQ_CBRANCH "" CACHE STRING "Set the RANDOMX_FREQ_CBRANCH value")
+set(RANDOMX_FREQ_CFROUND "" CACHE STRING "Set the RANDOMX_FREQ_CFROUND value")
+set(RANDOMX_FREQ_ISTORE "" CACHE STRING "Set the RANDOMX_FREQ_ISTORE value")
+set(RANDOMX_FREQ_NOP "" CACHE STRING "Set the RANDOMX_FREQ_NOP value")
+set(RANDOMX_UNSAFE "" CACHE STRING "Set the RANDOMX_UNSAFE value")
 
 if(USE_HIDDEN_VISIBILITY)
   add_compile_options("-fvisibility=hidden")
@@ -233,6 +270,154 @@ if(RANDOMX_DATASET_BASE_SIZE)
   target_compile_definitions(randomx PRIVATE RANDOMX_DATASET_BASE_SIZE=${RANDOMX_DATASET_BASE_SIZE})
 endif()
 
+if(RANDOMX_PROGRAM_SIZE)
+  target_compile_definitions(randomx PRIVATE RANDOMX_PROGRAM_SIZE=${RANDOMX_PROGRAM_SIZE})
+endif()
+
+if(RANDOMX_PROGRAM_ITERATIONS)
+  target_compile_definitions(randomx PRIVATE RANDOMX_PROGRAM_ITERATIONS=${RANDOMX_PROGRAM_ITERATIONS})
+endif()
+
+if(RANDOMX_PROGRAM_COUNT)
+  target_compile_definitions(randomx PRIVATE RANDOMX_PROGRAM_COUNT=${RANDOMX_PROGRAM_COUNT})
+endif()
+
+if(RANDOMX_SCRATCHPAD_L1)
+  target_compile_definitions(randomx PRIVATE RANDOMX_SCRATCHPAD_L1=${RANDOMX_SCRATCHPAD_L1})
+endif()
+
+if(RANDOMX_SCRATCHPAD_L2)
+  target_compile_definitions(randomx PRIVATE RANDOMX_SCRATCHPAD_L2=${RANDOMX_SCRATCHPAD_L2})
+endif()
+
+if(RANDOMX_SCRATCHPAD_L3)
+  target_compile_definitions(randomx PRIVATE RANDOMX_SCRATCHPAD_L3=${RANDOMX_SCRATCHPAD_L3})
+endif()
+
+if(RANDOMX_FREQ_IADD_RS)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IADD_RS=${RANDOMX_FREQ_IADD_RS})
+endif()
+
+if(RANDOMX_FREQ_IADD_M)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IADD_M=${RANDOMX_FREQ_IADD_M})
+endif()
+
+if(RANDOMX_FREQ_ISUB_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_ISUB_R=${RANDOMX_FREQ_ISUB_R})
+endif()
+
+if(RANDOMX_FREQ_ISUB_M)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_ISUB_M=${RANDOMX_FREQ_ISUB_M})
+endif()
+
+if(RANDOMX_FREQ_IMUL_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IMUL_R=${RANDOMX_FREQ_IMUL_R})
+endif()
+
+if(RANDOMX_FREQ_IMUL_M)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IMUL_M=${RANDOMX_FREQ_IMUL_M})
+endif()
+
+if(RANDOMX_FREQ_IMULH_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IMULH_R=${RANDOMX_FREQ_IMULH_R})
+endif()
+
+if(RANDOMX_FREQ_IMULH_M)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IMULH_M=${RANDOMX_FREQ_IMULH_M})
+endif()
+
+if(RANDOMX_FREQ_ISMULH_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_ISMULH_R=${RANDOMX_FREQ_ISMULH_R})
+endif()
+
+if(RANDOMX_FREQ_ISMULH_M)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_ISMULH_M=${RANDOMX_FREQ_ISMULH_M})
+endif()
+
+if(RANDOMX_FREQ_IMUL_RCP)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IMUL_RCP=${RANDOMX_FREQ_IMUL_RCP})
+endif()
+
+if(RANDOMX_FREQ_INEG_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_INEG_R=${RANDOMX_FREQ_INEG_R})
+endif()
+
+if(RANDOMX_FREQ_IXOR_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IXOR_R=${RANDOMX_FREQ_IXOR_R})
+endif()
+
+if(RANDOMX_FREQ_IXOR_M)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IXOR_M=${RANDOMX_FREQ_IXOR_M})
+endif()
+
+if(RANDOMX_FREQ_IROR_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IROR_R=${RANDOMX_FREQ_IROR_R})
+endif()
+
+if(RANDOMX_FREQ_IROL_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_IROL_R=${RANDOMX_FREQ_IROL_R})
+endif()
+
+if(RANDOMX_FREQ_ISWAP_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_ISWAP_R=${RANDOMX_FREQ_ISWAP_R})
+endif()
+
+if(RANDOMX_FREQ_FSWAP_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_FSWAP_R=${RANDOMX_FREQ_FSWAP_R})
+endif()
+
+if(RANDOMX_FREQ_FADD_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_FADD_R=${RANDOMX_FREQ_FADD_R})
+endif()
+
+if(RANDOMX_FREQ_FADD_M)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_FADD_M=${RANDOMX_FREQ_FADD_M})
+endif()
+
+if(RANDOMX_FREQ_FSUB_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_FSUB_R=${RANDOMX_FREQ_FSUB_R})
+endif()
+
+if(RANDOMX_FREQ_FSUB_M)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_FSUB_M=${RANDOMX_FREQ_FSUB_M})
+endif()
+
+if(RANDOMX_FREQ_FSCAL_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_FSCAL_R=${RANDOMX_FREQ_FSCAL_R})
+endif()
+
+if(RANDOMX_FREQ_FMUL_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_FMUL_R=${RANDOMX_FREQ_FMUL_R})
+endif()
+
+if(RANDOMX_FREQ_FDIV_M)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_FDIV_M=${RANDOMX_FREQ_FDIV_M})
+endif()
+
+if(RANDOMX_FREQ_FSQRT_R)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_FSQRT_R=${RANDOMX_FREQ_FSQRT_R})
+endif()
+
+if(RANDOMX_FREQ_CBRANCH)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_CBRANCH=${RANDOMX_FREQ_CBRANCH})
+endif()
+
+if(RANDOMX_FREQ_CFROUND)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_CFROUND=${RANDOMX_FREQ_CFROUND})
+endif()
+
+if(RANDOMX_FREQ_ISTORE)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_ISTORE=${RANDOMX_FREQ_ISTORE})
+endif()
+
+if(RANDOMX_FREQ_NOP)
+  target_compile_definitions(randomx PRIVATE RANDOMX_FREQ_NOP=${RANDOMX_FREQ_NOP})
+endif()
+
+if(RANDOMX_UNSAFE)
+  target_compile_definitions(randomx PRIVATE RANDOMX_UNSAFE=${RANDOMX_UNSAFE})
+endif()
+
 if(TARGET generate-asm)
   add_dependencies(randomx generate-asm)
 endif()
diff --git a/src/configuration.h b/src/configuration.h
index e795d05..8945d92 100644
--- a/src/configuration.h
+++ b/src/configuration.h
@@ -57,22 +57,34 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define RANDOMX_DATASET_EXTRA_SIZE 31563008 // 493172 (just an arbitrary number) * 64, tweaked for Arweave
 
 //Number of instructions in a RandomX program. Must be divisible by 8.
+#ifndef RANDOMX_PROGRAM_SIZE
 #define RANDOMX_PROGRAM_SIZE       256
+#endif
 
 //Number of iterations during VM execution.
+#ifndef RANDOMX_PROGRAM_ITERATIONS
 #define RANDOMX_PROGRAM_ITERATIONS 2048
+#endif
 
 //Number of chained VM executions per hash.
+#ifndef RANDOMX_PROGRAM_COUNT
 #define RANDOMX_PROGRAM_COUNT      8
+#endif
 
 //Scratchpad L3 size in bytes. Must be a power of 2.
+#ifndef RANDOMX_SCRATCHPAD_L3
 #define RANDOMX_SCRATCHPAD_L3      2097152
+#endif
 
 //Scratchpad L2 size in bytes. Must be a power of two and less than or equal to RANDOMX_SCRATCHPAD_L3.
+#ifndef RANDOMX_SCRATCHPAD_L2
 #define RANDOMX_SCRATCHPAD_L2      262144
+#endif
 
 //Scratchpad L1 size in bytes. Must be a power of two (minimum 64) and less than or equal to RANDOMX_SCRATCHPAD_L2.
+#ifndef RANDOMX_SCRATCHPAD_L1
 #define RANDOMX_SCRATCHPAD_L1      16384
+#endif
 
 //Jump condition mask size in bits.
 #define RANDOMX_JUMP_BITS          8
@@ -86,44 +98,129 @@ Total sum of frequencies must be 256
 */
 
 //Integer instructions
+#ifndef RANDOMX_FREQ_IADD_RS
 #define RANDOMX_FREQ_IADD_RS       25
+#endif
+
+#ifndef RANDOMX_FREQ_IADD_M
 #define RANDOMX_FREQ_IADD_M         7
+#endif
+
+#ifndef RANDOMX_FREQ_ISUB_R
 #define RANDOMX_FREQ_ISUB_R        16
+#endif
+
+#ifndef RANDOMX_FREQ_ISUB_M
 #define RANDOMX_FREQ_ISUB_M         7
+#endif
+
+#ifndef RANDOMX_FREQ_IMUL_R
 #define RANDOMX_FREQ_IMUL_R        16
+#endif
+
+#ifndef RANDOMX_FREQ_IMUL_M
 #define RANDOMX_FREQ_IMUL_M         4
+#endif
+
+#ifndef RANDOMX_FREQ_IMULH_R
 #define RANDOMX_FREQ_IMULH_R        4
+#endif
+
+#ifndef RANDOMX_FREQ_IMULH_M
 #define RANDOMX_FREQ_IMULH_M        1
+#endif
+
+#ifndef RANDOMX_FREQ_ISMULH_R
 #define RANDOMX_FREQ_ISMULH_R       4
+#endif
+
+#ifndef RANDOMX_FREQ_ISMULH_M
 #define RANDOMX_FREQ_ISMULH_M       1
+#endif
+
+#ifndef RANDOMX_FREQ_IMUL_RCP
 #define RANDOMX_FREQ_IMUL_RCP       8
+#endif
+
+#ifndef RANDOMX_FREQ_INEG_R
 #define RANDOMX_FREQ_INEG_R         2
+#endif
+
+#ifndef RANDOMX_FREQ_IXOR_R
 #define RANDOMX_FREQ_IXOR_R        15
+#endif
+
+#ifndef RANDOMX_FREQ_IXOR_M
 #define RANDOMX_FREQ_IXOR_M         5
+#endif
+
+#ifndef RANDOMX_FREQ_IROR_R
 #define RANDOMX_FREQ_IROR_R        10
+#endif
+
+#ifndef RANDOMX_FREQ_IROL_R
 #define RANDOMX_FREQ_IROL_R         0
+#endif
+
+#ifndef RANDOMX_FREQ_ISWAP_R
 #define RANDOMX_FREQ_ISWAP_R        4
+#endif
 
 //Floating point instructions
+#ifndef RANDOMX_FREQ_FSWAP_R
 #define RANDOMX_FREQ_FSWAP_R        8
+#endif
+
+#ifndef RANDOMX_FREQ_FADD_R
 #define RANDOMX_FREQ_FADD_R        20
+#endif
+
+#ifndef RANDOMX_FREQ_FADD_M
 #define RANDOMX_FREQ_FADD_M         5
+#endif
+
+#ifndef RANDOMX_FREQ_FSUB_R
 #define RANDOMX_FREQ_FSUB_R        20
+#endif
+
+#ifndef RANDOMX_FREQ_FSUB_M
 #define RANDOMX_FREQ_FSUB_M         5
+#endif
+
+#ifndef RANDOMX_FREQ_FSCAL_R
 #define RANDOMX_FREQ_FSCAL_R        6
+#endif
+
+#ifndef RANDOMX_FREQ_FMUL_R
 #define RANDOMX_FREQ_FMUL_R        20
+#endif
+
+#ifndef RANDOMX_FREQ_FDIV_M
 #define RANDOMX_FREQ_FDIV_M         4
+#endif
+
+#ifndef RANDOMX_FREQ_FSQRT_R
 #define RANDOMX_FREQ_FSQRT_R        6
+#endif
 
 //Control instructions
+#ifndef RANDOMX_FREQ_CBRANCH
 #define RANDOMX_FREQ_CBRANCH       16
+#endif
+
+#ifndef RANDOMX_FREQ_CFROUND
 #define RANDOMX_FREQ_CFROUND        1
+#endif
 
 //Store instruction
+#ifndef RANDOMX_FREQ_ISTORE
 #define RANDOMX_FREQ_ISTORE        16
+#endif
 
 //No-op instruction
+#ifndef RANDOMX_FREQ_NOP
 #define RANDOMX_FREQ_NOP            0
+#endif
 /*                               ------
                                   256
 */
\ No newline at end of file
diff --git a/src/instruction_weights.hpp b/src/instruction_weights.hpp
index f6c8873..2c208a7 100644
--- a/src/instruction_weights.hpp
+++ b/src/instruction_weights.hpp
@@ -63,6 +63,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define REP32(x) REP31(x) x,
 #define REP33(x) REP32(x) x,
 #define REP40(x) REP32(x) REP8(x)
+#define REP48(x) REP40(x) REP8(x)
 #define REP64(x) REP32(x) REP32(x)
 #define REP128(x) REP32(x) REP32(x) REP32(x) REP32(x)
 #define REP232(x) REP128(x) REP40(x) REP40(x) REP24(x)
diff --git a/src/randomx.cpp b/src/randomx.cpp
index cd83d2e..f34a5de 100644
--- a/src/randomx.cpp
+++ b/src/randomx.cpp
@@ -188,6 +188,10 @@ extern "C" {
 		return DatasetItemCount;
 	}
 
+	unsigned long randomx_get_scratchpad_size() {
+		return randomx::ScratchpadSize;
+	}
+
 	void randomx_init_dataset(randomx_dataset *dataset, randomx_cache *cache, unsigned long startItem, unsigned long itemCount) {
 		assert(dataset != nullptr);
 		assert(cache != nullptr);
diff --git a/src/randomx.h b/src/randomx.h
index c323da6..df2e7df 100644
--- a/src/randomx.h
+++ b/src/randomx.h
@@ -184,6 +184,13 @@ RANDOMX_EXPORT void *randomx_get_dataset_memory(randomx_dataset *dataset);
 */
 RANDOMX_EXPORT void randomx_release_dataset(randomx_dataset *dataset);
 
+/**
+ * Gets size of the scratchpad in bytes.
+ *
+ * @return the size of the scratchpad in bytes.
+*/
+RANDOMX_EXPORT unsigned long randomx_get_scratchpad_size(void);
+
 /**
  * Creates and initializes a RandomX virtual machine.
  *