diff --git a/.#epenguin.hpp b/.#epenguin.hpp
deleted file mode 120000
index cb7e426e..00000000
--- a/.#epenguin.hpp
+++ /dev/null
@@ -1 +0,0 @@
-penguin@penguin-pc.12922:1592934912
\ No newline at end of file
diff --git a/arch/arm/SAM_D2X/hal/.#hal_sam_d2x.hpp b/arch/arm/SAM_D2X/hal/.#hal_sam_d2x.hpp
deleted file mode 120000
index cb7e426e..00000000
--- a/arch/arm/SAM_D2X/hal/.#hal_sam_d2x.hpp
+++ /dev/null
@@ -1 +0,0 @@
-penguin@penguin-pc.12922:1592934912
\ No newline at end of file
diff --git a/arch/arm/SAM_D2X/hal/hal_sam_d2x.hpp b/arch/arm/SAM_D2X/hal/hal_sam_d2x.hpp
index 3da6bd35..9812fbe2 100644
--- a/arch/arm/SAM_D2X/hal/hal_sam_d2x.hpp
+++ b/arch/arm/SAM_D2X/hal/hal_sam_d2x.hpp
@@ -1,6 +1,24 @@
 #ifndef _HAL_SAM_D2X_HPP_
 #define _HAL_SAM_D2X_HPP_
 
+#include "hal_arm.hpp"
 
+namespace hal::arm::sam_d2x
+{
+	namespace core
+	{
+
+	};
+
+	namespace usart
+	{
+
+	};
+
+	namespace spi
+	{
+
+	};
+};
 
 #endif
diff --git a/arch/arm/SAM_D2X/hdi/hdi_sam_d2x.h b/arch/arm/SAM_D2X/hdi/hdi_sam_d2x.h
index c22d6501..f899fc28 100644
--- a/arch/arm/SAM_D2X/hdi/hdi_sam_d2x.h
+++ b/arch/arm/SAM_D2X/hdi/hdi_sam_d2x.h
@@ -1,34 +1,14 @@
 #ifndef _HDI_SAM_D2X_H_
 #define _HDI_SAM_D2X_H_
-#include "hal_arm.h"
+#include "hal_arm.hpp"
 #include <stdint.h>
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#if !(defined(__ASSEMBLY__))
-#ifndef __cplusplus
-	typedef volatile const 	uint32_t RoReg; 	// Read only 32-bit register (volatile const unsigned int)
-	typedef volatile const 	uint16_t RoReg16; 	// Read only 16-bit register (volatile const unsigned int)
-	typedef volatile const 	uint8_t  RoReg8; 	// Read only 8-bit register (volatile const unsigned int)
-#else
-	typedef volatile 			uint32_t RoReg; 	// Read only 32-bit register (volatile const unsigned int)
-	typedef volatile 			uint16_t RoReg16;	// Read only 16-bit register (volatile const unsigned int)
-	typedef volatile 			uint8_t  RoReg8;	// Read only 8-bit register (volatile const unsigned int)
+#if !(EP_MCU == __SAM_D2X__)
+	#error Shouldn't have gotten here
 #endif
-	typedef volatile			uint32_t WoReg;	// Write only 32-bit register (volatile unsigned int)
-	typedef volatile			uint16_t WoReg16;	// Write only 16-bit register (volatile unsigned int)
-	typedef volatile 			uint16_t WoReg8;	// Write only 8-bit register (volatile unsigned int)
-	typedef volatile			uint32_t RwReg;	// Write only 32-bit register (volatile unsigned int)
-	typedef volatile			uint16_t RwReg16;	// Write only 16-bit register (volatile unsigned int)
-	typedef volatile 			uint8_t  RwReg8;	// Write only 8-bit register (volatile unsigned int)
-#define CAST(type, value) ((type*)(value))
-#define REG_ACCESS(type, address) (*(type*)(address))
-#else
-#define CAST(type, value) (value)
-#define REG_ACCESS(type, address) (address)
-#endif
-
 typedef enum IRQn
 {
 	// Cortex-M0+ Processor Exception Numbers
@@ -51,8 +31,10 @@ typedef enum IRQn
 	SERCOM1_IRQn					= 10,
 	SERCOM2_IRQn					= 11,
 	SERCOM3_IRQn					= 12,
+	#if !()
 	SERCOM4_IRQn					= 13,
-	SERCOM5_IRQn					= 14
+	SERCOM5_IRQn					= 14,
+
 }IRQn_Type;
 #ifdef __cplusplus
 }
diff --git a/epenguin.hpp b/epenguin.hpp
index 53d9d5a7..d53ea0dc 100644
--- a/epenguin.hpp
+++ b/epenguin.hpp
@@ -1,10 +1,89 @@
 #ifndef _EPENGUIN_HPP_
 #define _EPENGUIN_HPP_
 
-#include "epenguin_conf.h"
-#include "epenguin_hal.hpp"
 
 
+/* -- ePenguin --
 
+   This master file dictates all supported hardware. It lists supported
+   architectures, mcu families, and specific mcus. This software framework
+   targets hardware at the mcu level--not at the board level. Board layers can
+   be applied, but this framework targets the mcu and the mcu alone.
 
+*/
+#ifndef __UARCHITECTURES__
+#define __UARCHITECTURES__
+#define __UARCH_ARM__			(0)
+#define __UARCH_ARM64__		(1)
+#define __UARCH_AVR__			(2)
+#define __UARCH_AVR32__		(3)
+#define __UARCH_X86__			(4)
+#define __UARCH_RISCV__		(5)
 #endif
+
+#ifndef __UFAMILIES__
+#define __UFAMILIES__
+/* Support ARM MCU Families */
+
+/*  Microchip */
+#define __SAM_D1X__			(0)
+#define __SAM_C1X__			(1)
+#define __SAM_D2X__			(2)
+#define __SAM_E_D5X__			(3)
+#define __SAM_C2X__			(4)
+#define __SAM_L2X__			(5)
+
+/* STMicroelectronics */
+
+/* NXP */
+
+#endif
+
+#ifndef __UCONTROLLERS__
+#define __UCONTROLLERS__
+
+/* ARM  */
+/* Microchip */
+/* SAM_D2X */
+/* D2X Series E */
+#define __ATSAMD21E15A__ (0)
+#define __ATSAMD21E15B__ (1)
+#define __ATSAMD21E15BU__ (2)
+#define __ATSAMD21E15L__ (3)
+#define __ATSAMD21E16A__ (4)
+#define __ATSAMD21E16B__ (5)
+#define __ATSAMD21E16BU__ (6)
+#define __ATSAMD21E16L__ (7)
+#define __ATSAMD21E17A__ (8)
+#define __ATSAMD21E17D__ (9)
+#define __ATSAMD21E17DU__ (10)
+#define __ATSAMD21E17L__ (11)
+#define __ATSAMD21E18A__ (12)
+/* D2X Series G */
+#define __ATSAMD21G15A__ (13)
+#define __ATSAMD21G15B__ (14)
+#define __ATSAMD21G15L__ (15)
+#define __ATSAMD21G16A__ (16)
+#define __ATSAMD21G16B__ (17)
+#define __ATSAMD21G16L__ (18)
+#define __ATSAMD21G17A__ (19)
+#define __ATSAMD21G17AU__ (20)
+#define __ATSAMD21G17D__ (21)
+#define __ATSAMD21G17L__ (22)
+#define __ATSAMD21G18A__ (23)
+#define __ATSAMD21G18AU__ (24)
+/*  D2X Series J */
+#define __ATSAMD21J15A__ (25)
+#define __ATSAMD21J15B__ (26)
+#define __ATSAMD21J16A__ (27)
+#define __ATSAMD21J16B__ (28)
+#define __ATSAMD21J17A__ (29)
+#define __ATSAMD21J17D__ (30)
+#define __ATSAMD21J18A__ (31)
+
+#endif
+#include "epenguin_conf.hpp"
+
+#endif
+
+
diff --git a/epenguin_hal.hpp b/epenguin_hal.hpp
index 21b49a08..ba3c2d85 100644
--- a/epenguin_hal.hpp
+++ b/epenguin_hal.hpp
@@ -1,7 +1,9 @@
-#ifndef _EPENGUIN_H_
-#define _EPENGUIN_H_
-
-namespace hal{};
+#ifndef _EPENGUIN_HAL_HPP_
+#define _EPENGUIN_HAL_HPP_
 
+namespace hal
+{
+	namespace util{};
+};
 
 #endif