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//----------------------------------------------------------------------------

// Copyright (C) 2009 , Olivier Girard

//

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions

// are met:

//     * Redistributions of source code must retain the above copyright

//       notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above copyright

//       notice, this list of conditions and the following disclaimer in the

//       documentation and/or other materials provided with the distribution.

//     * Neither the name of the authors nor the names of its contributors

//       may be used to endorse or promote products derived from this software

//       without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,

// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

// THE POSSIBILITY OF SUCH DAMAGE

//

//----------------------------------------------------------------------------

// 

// *File Name: openMSP430_defines.v

// 

// *Module Description:

//                      openMSP430 Configuration file

//

// *Author(s):

//              - Olivier Girard,    olgirard@gmail.com

//

//----------------------------------------------------------------------------

// $Rev: 103 $

// $LastChangedBy: olivier.girard $

// $LastChangedDate: 2011-03-05 15:44:48 +0100 (Sat, 05 Mar 2011) $

//----------------------------------------------------------------------------

//`define OMSP_NO_INCLUDE

`ifdef OMSP_NO_INCLUDE

`else

`include "openMSP430_undefines.v"

`endif

//============================================================================

//============================================================================

// BASIC SYSTEM CONFIGURATION

//============================================================================

//============================================================================

//

// Note: the sum of program, data and peripheral memory spaces must not

//      exceed 64 kB

//

// Program Memory Size:

//                     Uncomment the required memory size

//-------------------------------------------------------

//`define PMEM_SIZE_CUSTOM

//`define PMEM_SIZE_59_KB

//`define PMEM_SIZE_55_KB

//`define PMEM_SIZE_54_KB

//`define PMEM_SIZE_51_KB

//`define PMEM_SIZE_48_KB

//`define PMEM_SIZE_41_KB

//`define PMEM_SIZE_32_KB

//`define PMEM_SIZE_24_KB

`define PMEM_SIZE_16_KB

//`define PMEM_SIZE_12_KB

//`define PMEM_SIZE_8_KB

//`define PMEM_SIZE_4_KB

//`define PMEM_SIZE_2_KB

//`define PMEM_SIZE_1_KB

// Data Memory Size:

//                     Uncomment the required memory size

//-------------------------------------------------------

//`define DMEM_SIZE_CUSTOM

//`define DMEM_SIZE_32_KB

//`define DMEM_SIZE_24_KB

//`define DMEM_SIZE_16_KB

//`define DMEM_SIZE_10_KB

//`define DMEM_SIZE_8_KB

//`define DMEM_SIZE_5_KB

`define DMEM_SIZE_4_KB

//`define DMEM_SIZE_2p5_KB

//`define DMEM_SIZE_2_KB

//`define DMEM_SIZE_1_KB

//`define DMEM_SIZE_512_B

//`define DMEM_SIZE_256_B

//`define DMEM_SIZE_128_B

// Include/Exclude Hardware Multiplier

`define MULTIPLIER

// Include/Exclude Serial Debug interface

`define DBG_EN

//============================================================================

//============================================================================

// ADVANCED SYSTEM CONFIGURATION (FOR EXPERIENCED USERS)

//============================================================================

//============================================================================

//-------------------------------------------------------

// Custom user version number

//-------------------------------------------------------

// This 5 bit field can be freely used in order to allow

// custom identification of the system through the debug

// interface.

// (see CPU_ID.USER_VERSION field in the documentation)

//-------------------------------------------------------

`define USER_VERSION 5'b00010

//-------------------------------------------------------

// Include/Exclude Watchdog timer

//-------------------------------------------------------

// When excluded, the following functionality will be

// lost:

//        - Watchog (both interval and watchdog modes)

//        - NMI interrupt edge selection

//        - Possibility to generate a software PUC reset

//-------------------------------------------------------

`define WATCHDOG

//-------------------------------------------------------

// Include/Exclude Non-Maskable-Interrupt support

//-------------------------------------------------------

`define NMI

//-------------------------------------------------------

// Input synchronizers

//-------------------------------------------------------

// In some cases, the asynchronous input ports might

// already be synchronized externally.

// If an extensive CDC design review showed that this

// is really the case,  the individual synchronizers

// can be disabled with the following defines.

//

// Notes:

//        - all three signals are all sampled in the MCLK domain

//

//        - the dbg_en signal reset the debug interface

//         when 0. Therefore make sure it is glitch free.

//

//-------------------------------------------------------

`define SYNC_NMI

//`define SYNC_CPU_EN

//`define SYNC_DBG_EN

//-------------------------------------------------------

// Peripheral Memory Space:

//-------------------------------------------------------

// The original MSP430 architecture map the peripherals

// from 0x0000 to 0x01FF (i.e. 512B of the memory space).

// The following defines allow you to expand this space

// up to 32 kB (i.e. from 0x0000 to 0x7fff).

// As a consequence, the data memory mapping will be

// shifted up and a custom linker script will therefore

// be required by the GCC compiler.

//-------------------------------------------------------

//`define PER_SIZE_CUSTOM

//`define PER_SIZE_32_KB

//`define PER_SIZE_16_KB

//`define PER_SIZE_8_KB

//`define PER_SIZE_4_KB

//`define PER_SIZE_2_KB

//`define PER_SIZE_1_KB

`define PER_SIZE_512_B

//-------------------------------------------------------

// Defines the debugger CPU_CTL.RST_BRK_EN reset value

// (CPU break on PUC reset)

//-------------------------------------------------------

// When defined, the CPU will automatically break after

// a PUC occurrence by default. This is typically useful

// when the program memory can only be initialized through

// the serial debug interface.

//-------------------------------------------------------

//`define DBG_RST_BRK_EN

//============================================================================

//============================================================================

// EXPERT SYSTEM CONFIGURATION ( !!!! EXPERTS ONLY !!!! )

//============================================================================

//============================================================================

//

// IMPORTANT NOTE:  Please update following configuration options ONLY if

//                 you have a good reason to do so... and if you know what

//                 you are doing :-P

//

//============================================================================

//-------------------------------------------------------

// Select serial debug interface protocol

//-------------------------------------------------------

//    DBG_UART -> Enable UART (8N1) debug interface

//    DBG_I2C  -> Enable I2C debug interface

//-------------------------------------------------------

//`define DBG_UART

`define DBG_I2C

//-------------------------------------------------------

// Enable the I2C broadcast address

//-------------------------------------------------------

// For multicore systems, a common I2C broadcast address

// can be given to all oMSP cores in order to

// synchronously RESET, START, STOP, or STEP all CPUs

// at once with a single I2C command.

// If you have a single openMSP430 in your system,

// this option can stay commented-out.

//-------------------------------------------------------

`define DBG_I2C_BROADCAST

//-------------------------------------------------------

// Number of hardware breakpoint/watchpoint units

// (each unit contains two hardware addresses available

// for breakpoints or watchpoints):

//   - DBG_HWBRK_0 -> Include hardware breakpoints unit 0

//   - DBG_HWBRK_1 -> Include hardware breakpoints unit 1

//   - DBG_HWBRK_2 -> Include hardware breakpoints unit 2

//   - DBG_HWBRK_3 -> Include hardware breakpoints unit 3

//-------------------------------------------------------

// Please keep in mind that hardware breakpoints only

// make sense whenever the program memory is not an SRAM

// (i.e. Flash/OTP/ROM/...) or when you are interested

// in data breakpoints.

//-------------------------------------------------------

`define  DBG_HWBRK_0

`define  DBG_HWBRK_1

//`define  DBG_HWBRK_2

//`define  DBG_HWBRK_3

//-------------------------------------------------------

// Enable/Disable the hardware breakpoint RANGE mode

//-------------------------------------------------------

// When enabled this feature allows the hardware breakpoint

// units to stop the cpu whenever an instruction or data

// access lays within an address range.

// Note that this feature is not supported by GDB.

//-------------------------------------------------------

//`define DBG_HWBRK_RANGE

//-------------------------------------------------------

// Custom Program/Data and Peripheral Memory Spaces

//-------------------------------------------------------

// The following values are valid only if the

// corresponding *_SIZE_CUSTOM defines are uncommented:

//

//  - *_SIZE   : size of the section in bytes.

//  - *_AWIDTH : address port width, this value must allow

//               to address all WORDS of the section

//               (i.e. the *_SIZE divided by 2)

//-------------------------------------------------------

// Custom Program memory (enabled with PMEM_SIZE_CUSTOM)

`define PMEM_CUSTOM_AWIDTH      10

`define PMEM_CUSTOM_SIZE      2048

// Custom Data memory    (enabled with DMEM_SIZE_CUSTOM)

`define DMEM_CUSTOM_AWIDTH       6

`define DMEM_CUSTOM_SIZE       128

// Custom Peripheral memory  (enabled with PER_SIZE_CUSTOM)

`define PER_CUSTOM_AWIDTH        8

`define PER_CUSTOM_SIZE        512

//-------------------------------------------------------

// ASIC version

//-------------------------------------------------------

// When uncommented, this define will enable the

// ASIC system configuration section (see below) and

// will activate scan support for production test.

//

// WARNING: if you target an FPGA, leave this define

//          commented.

//-------------------------------------------------------

//`define ASIC

//============================================================================

//============================================================================

// ASIC SYSTEM CONFIGURATION ( !!!! EXPERTS/PROFESSIONALS ONLY !!!! )

//============================================================================

//============================================================================

`ifdef ASIC

//===============================================================

// FINE GRAINED CLOCK GATING

//===============================================================

//-------------------------------------------------------

// When uncommented, this define will enable the fine

// grained clock gating of all registers in the core.

//-------------------------------------------------------

`define CLOCK_GATING

//===============================================================

// ASIC CLOCKING

//===============================================================

//-------------------------------------------------------

// When uncommented, this define will enable the ASIC

// architectural clock gating as well as the advanced low

// power modes support (most common).

// Comment this out in order to get FPGA-like clocking.

//-------------------------------------------------------

`define ASIC_CLOCKING

`ifdef ASIC_CLOCKING

//===============================================================

// LFXT CLOCK DOMAIN

//===============================================================

//-------------------------------------------------------

// When uncommented, this define will enable the lfxt_clk

// clock domain.

// When commented out, the whole chip is clocked with dco_clk.

//-------------------------------------------------------

`define LFXT_DOMAIN

//===============================================================

// CLOCK MUXES

//===============================================================

//-------------------------------------------------------

// MCLK: Clock Mux

//-------------------------------------------------------

// When uncommented, this define will enable the

// MCLK clock MUX allowing the selection between

// DCO_CLK and LFXT_CLK with the BCSCTL2.SELMx register.

// When commented, DCO_CLK is selected.

//-------------------------------------------------------

`define MCLK_MUX

//-------------------------------------------------------

// SMCLK: Clock Mux

//-------------------------------------------------------

// When uncommented, this define will enable the

// SMCLK clock MUX allowing the selection between

// DCO_CLK and LFXT_CLK with the BCSCTL2.SELS register.

// When commented, DCO_CLK is selected.

//-------------------------------------------------------

`define SMCLK_MUX

//-------------------------------------------------------

// WATCHDOG: Clock Mux

//-------------------------------------------------------

// When uncommented, this define will enable the

// Watchdog clock MUX allowing the selection between

// ACLK and SMCLK with the WDTCTL.WDTSSEL register.

// When commented out, ACLK is selected if the

// WATCHDOG_NOMUX_ACLK define is uncommented, SMCLK is

// selected otherwise.

//-------------------------------------------------------

`define WATCHDOG_MUX

//`define WATCHDOG_NOMUX_ACLK

//===============================================================

// CLOCK DIVIDERS

//===============================================================

//-------------------------------------------------------

// MCLK: Clock divider

//-------------------------------------------------------

// When uncommented, this define will enable the

// MCLK clock divider (/1/2/4/8)

//-------------------------------------------------------

`define MCLK_DIVIDER

//-------------------------------------------------------

// SMCLK: Clock divider (/1/2/4/8)

//-------------------------------------------------------

// When uncommented, this define will enable the

// SMCLK clock divider

//-------------------------------------------------------

`define SMCLK_DIVIDER

//-------------------------------------------------------

// ACLK: Clock divider (/1/2/4/8)

//-------------------------------------------------------

// When uncommented, this define will enable the

// ACLK clock divider

//-------------------------------------------------------

`define ACLK_DIVIDER

//===============================================================

// LOW POWER MODES

//===============================================================

//-------------------------------------------------------

// LOW POWER MODE: CPUOFF

//-------------------------------------------------------

// When uncommented, this define will include the

// clock gate allowing to switch off MCLK in

// all low power modes: LPM0, LPM1, LPM2, LPM3, LPM4

//-------------------------------------------------------

`define CPUOFF_EN

//-------------------------------------------------------

// LOW POWER MODE: SCG0

//-------------------------------------------------------

// When uncommented, this define will enable the

// DCO_ENABLE/WKUP port control (always 1 when commented).

// This allows to switch off the DCO oscillator in the

// following low power modes: LPM1, LPM3, LPM4

//-------------------------------------------------------

`define SCG0_EN

//-------------------------------------------------------

// LOW POWER MODE: SCG1

//-------------------------------------------------------

// When uncommented, this define will include the

// clock gate allowing to switch off SMCLK in

// the following low power modes: LPM2, LPM3, LPM4

//-------------------------------------------------------

`define SCG1_EN

//-------------------------------------------------------

// LOW POWER MODE: OSCOFF

//-------------------------------------------------------

// When uncommented, this define will include the

// LFXT_CLK clock gate and enable the LFXT_ENABLE/WKUP

// port control (always 1 when commented).

// This allows to switch off the low frequency oscillator

// in the following low power modes: LPM4

//-------------------------------------------------------

`define OSCOFF_EN

`endif

`endif

//==========================================================================//

//==========================================================================//

//==========================================================================//

//==========================================================================//

//=====        SYSTEM CONSTANTS --- !!!!!!!! DO NOT EDIT !!!!!!!!      =====//

//==========================================================================//

//==========================================================================//

//==========================================================================//

//==========================================================================//

//

// PROGRAM, DATA & PERIPHERAL MEMORY CONFIGURATION

//==================================================

// Program Memory Size

`ifdef PMEM_SIZE_59_KB

  `define PMEM_AWIDTH      15

  `define PMEM_SIZE     60416

`endif

`ifdef PMEM_SIZE_55_KB

  `define PMEM_AWIDTH      15

  `define PMEM_SIZE     56320

`endif

`ifdef PMEM_SIZE_54_KB

  `define PMEM_AWIDTH      15

  `define PMEM_SIZE     55296

`endif

`ifdef PMEM_SIZE_51_KB

  `define PMEM_AWIDTH      15

  `define PMEM_SIZE     52224

`endif

`ifdef PMEM_SIZE_48_KB

  `define PMEM_AWIDTH      15

  `define PMEM_SIZE     49152

`endif

`ifdef PMEM_SIZE_41_KB

  `define PMEM_AWIDTH      15

  `define PMEM_SIZE     41984

`endif

`ifdef PMEM_SIZE_32_KB

  `define PMEM_AWIDTH      14

  `define PMEM_SIZE     32768

`endif

`ifdef PMEM_SIZE_24_KB

  `define PMEM_AWIDTH      14

  `define PMEM_SIZE     24576

`endif

`ifdef PMEM_SIZE_16_KB

  `define PMEM_AWIDTH      13

  `define PMEM_SIZE     16384

`endif

`ifdef PMEM_SIZE_12_KB

  `define PMEM_AWIDTH      13

  `define PMEM_SIZE     12288

`endif

`ifdef PMEM_SIZE_8_KB

  `define PMEM_AWIDTH      12

  `define PMEM_SIZE      8192

`endif

`ifdef PMEM_SIZE_4_KB

  `define PMEM_AWIDTH      11

  `define PMEM_SIZE      4096

`endif

`ifdef PMEM_SIZE_2_KB

  `define PMEM_AWIDTH      10

  `define PMEM_SIZE      2048

`endif

`ifdef PMEM_SIZE_1_KB

  `define PMEM_AWIDTH       9

  `define PMEM_SIZE      1024

`endif

`ifdef PMEM_SIZE_CUSTOM

  `define PMEM_AWIDTH       `PMEM_CUSTOM_AWIDTH

  `define PMEM_SIZE         `PMEM_CUSTOM_SIZE

`endif

// Data Memory Size

`ifdef DMEM_SIZE_32_KB

  `define DMEM_AWIDTH       14

  `define DMEM_SIZE      32768

`endif

`ifdef DMEM_SIZE_24_KB

  `define DMEM_AWIDTH       14

  `define DMEM_SIZE      24576

`endif

`ifdef DMEM_SIZE_16_KB

  `define DMEM_AWIDTH       13

  `define DMEM_SIZE      16384

`endif

`ifdef DMEM_SIZE_10_KB

  `define DMEM_AWIDTH       13

  `define DMEM_SIZE      10240

`endif

`ifdef DMEM_SIZE_8_KB

  `define DMEM_AWIDTH       12

  `define DMEM_SIZE       8192

`endif

`ifdef DMEM_SIZE_5_KB

  `define DMEM_AWIDTH       12

  `define DMEM_SIZE       5120

`endif

`ifdef DMEM_SIZE_4_KB

  `define DMEM_AWIDTH       11

  `define DMEM_SIZE       4096

`endif

`ifdef DMEM_SIZE_2p5_KB

  `define DMEM_AWIDTH       11

  `define DMEM_SIZE       2560

`endif

`ifdef DMEM_SIZE_2_KB

  `define DMEM_AWIDTH       10

  `define DMEM_SIZE       2048

`endif

`ifdef DMEM_SIZE_1_KB

  `define DMEM_AWIDTH        9

  `define DMEM_SIZE       1024

`endif

`ifdef DMEM_SIZE_512_B

  `define DMEM_AWIDTH        8

  `define DMEM_SIZE        512

`endif

`ifdef DMEM_SIZE_256_B

  `define DMEM_AWIDTH        7

  `define DMEM_SIZE        256

`endif

`ifdef DMEM_SIZE_128_B

  `define DMEM_AWIDTH        6

  `define DMEM_SIZE        128

`endif

`ifdef DMEM_SIZE_CUSTOM

  `define DMEM_AWIDTH       `DMEM_CUSTOM_AWIDTH

  `define DMEM_SIZE         `DMEM_CUSTOM_SIZE

`endif

// Peripheral Memory Size

`ifdef PER_SIZE_32_KB

  `define PER_AWIDTH        14

  `define PER_SIZE       32768

`endif

`ifdef PER_SIZE_16_KB

  `define PER_AWIDTH        13

  `define PER_SIZE       16384

`endif

`ifdef PER_SIZE_8_KB

  `define PER_AWIDTH        12

  `define PER_SIZE        8192

`endif

`ifdef PER_SIZE_4_KB

  `define PER_AWIDTH        11

  `define PER_SIZE        4096

`endif

`ifdef PER_SIZE_2_KB

  `define PER_AWIDTH        10

  `define PER_SIZE        2048

`endif

`ifdef PER_SIZE_1_KB

  `define PER_AWIDTH         9

  `define PER_SIZE        1024

`endif

`ifdef PER_SIZE_512_B

  `define PER_AWIDTH         8

  `define PER_SIZE         512

`endif

`ifdef PER_SIZE_CUSTOM

  `define PER_AWIDTH        `PER_CUSTOM_AWIDTH

  `define PER_SIZE          `PER_CUSTOM_SIZE

`endif

// Data Memory Base Adresses

`define DMEM_BASE  `PER_SIZE

// Program & Data Memory most significant address bit (for 16 bit words)

`define PMEM_MSB   `PMEM_AWIDTH-1

`define DMEM_MSB   `DMEM_AWIDTH-1

`define PER_MSB    `PER_AWIDTH-1

//

// STATES, REGISTER FIELDS, ...

//======================================

// Instructions type

`define INST_SO  0

`define INST_JMP 1

`define INST_TO  2

// Single-operand arithmetic

`define RRC    0

`define SWPB   1

`define RRA    2

`define SXT    3

`define PUSH   4

`define CALL   5

`define RETI   6

`define IRQ    7

// Conditional jump

`define JNE    0

`define JEQ    1

`define JNC    2

`define JC     3

`define JN     4

`define JGE    5

`define JL     6

`define JMP    7

// Two-operand arithmetic

`define MOV    0

`define ADD    1

`define ADDC   2

`define SUBC   3

`define SUB    4

`define CMP    5

`define DADD   6

`define BIT    7

`define BIC    8

`define BIS    9

`define XOR   10

`define AND   11

// Addressing modes

`define DIR      0

`define IDX      1

`define INDIR    2

`define INDIR_I  3

`define SYMB     4

`define IMM      5

`define ABS      6

`define CONST    7

// Instruction state machine

`define I_IRQ_FETCH 3'h0

`define I_IRQ_DONE  3'h1

`define I_DEC       3'h2

`define I_EXT1      3'h3

`define I_EXT2      3'h4

`define I_IDLE      3'h5

// Execution state machine

// (swapped E_IRQ_0 and E_IRQ_2 values to suppress glitch generation warning from lint tool)

`define E_IRQ_0     4'h2

`define E_IRQ_1     4'h1

`define E_IRQ_2     4'h0

`define E_IRQ_3     4'h3

`define E_IRQ_4     4'h4

`define E_SRC_AD    4'h5

`define E_SRC_RD    4'h6

`define E_SRC_WR    4'h7

`define E_DST_AD    4'h8

`define E_DST_RD    4'h9

`define E_DST_WR    4'hA

`define E_EXEC      4'hB

`define E_JUMP      4'hC

`define E_IDLE      4'hD

// ALU control signals

`define ALU_SRC_INV   0

`define ALU_INC       1

`define ALU_INC_C     2

`define ALU_ADD       3

`define ALU_AND       4

`define ALU_OR        5

`define ALU_XOR       6

`define ALU_DADD      7

`define ALU_STAT_7    8

`define ALU_STAT_F    9

`define ALU_SHIFT    10

`define EXEC_NO_WR   11

// Debug interface

`define DBG_UART_WR   18

`define DBG_UART_BW   17

`define DBG_UART_ADDR 16:11

// Debug interface CPU_CTL register

`define HALT        0

`define RUN         1

`define ISTEP       2

`define SW_BRK_EN   3

`define FRZ_BRK_EN  4

`define RST_BRK_EN  5

`define CPU_RST     6

// Debug interface CPU_STAT register

`define HALT_RUN    0

`define PUC_PND     1

`define SWBRK_PND   3

`define HWBRK0_PND  4

`define HWBRK1_PND  5

// Debug interface BRKx_CTL register

`define BRK_MODE_RD 0

`define BRK_MODE_WR 1

`define BRK_MODE    1:0

`define BRK_EN      2

`define BRK_I_EN    3

`define BRK_RANGE   4

// Basic clock module: BCSCTL1 Control Register

`define DIVAx       5:4

// Basic clock module: BCSCTL2 Control Register

`define SELMx       7

`define DIVMx       5:4

`define SELS        3

`define DIVSx       2:1

// MCLK Clock gate

`ifdef CPUOFF_EN

  `define MCLK_CGATE

`else

`ifdef MCLK_DIVIDER

  `define MCLK_CGATE

`endif

`endif

// SMCLK Clock gate

`ifdef SCG1_EN

  `define SMCLK_CGATE

`else

`ifdef SMCLK_DIVIDER

  `define SMCLK_CGATE

`endif

`endif

//

// DEBUG INTERFACE EXTRA CONFIGURATION

//======================================

// Debug interface: CPU version

`define CPU_VERSION   3'h2

// Debug interface: Software breakpoint opcode

`define DBG_SWBRK_OP 16'h4343

// Debug UART interface auto data synchronization

// If the following define is commented out, then

// the DBG_UART_BAUD and DBG_DCO_FREQ need to be properly

// defined.

`define DBG_UART_AUTO_SYNC

// Debug UART interface data rate

//      In order to properly setup the UART debug interface, you

//      need to specify the DCO_CLK frequency (DBG_DCO_FREQ) and

//      the chosen BAUD rate from the UART interface.

//

//`define DBG_UART_BAUD    9600

//`define DBG_UART_BAUD   19200

//`define DBG_UART_BAUD   38400