426 lines
12 KiB
Plaintext
426 lines
12 KiB
Plaintext
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/**************************************************************************************************
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Filename: chipcon_cstartup.s51
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Revised: $Date: 2010-01-28 17:00:06 -0800 (Thu, 28 Jan 2010) $
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Revision: $Revision: 21615 $
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Description: Contains the code executed before the C/EC++ "main"
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function is called. The code is designed to run on any
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processor based on the 8051 architecture.
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Copyright 2005-2007 Texas Instruments Incorporated. All rights reserved.
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IMPORTANT: Your use of this Software is limited to those specific rights
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granted under the terms of a software license agreement between the user
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who downloaded the software, his/her employer (which must be your employer)
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and Texas Instruments Incorporated (the "License"). You may not use this
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Software unless you agree to abide by the terms of the License. The License
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limits your use, and you acknowledge, that the Software may not be modified,
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copied or distributed unless embedded on a Texas Instruments microcontroller
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or used solely and exclusively in conjunction with a Texas Instruments radio
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frequency transceiver, which is integrated into your product. Other than for
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the foregoing purpose, you may not use, reproduce, copy, prepare derivative
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works of, modify, distribute, perform, display or sell this Software and/or
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its documentation for any purpose.
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YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
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PROVIDED <20>AS IS<49> WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
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INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
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NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
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TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
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NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
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LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
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INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
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OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
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OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
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(INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
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Should you have any questions regarding your right to use this Software,
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contact Texas Instruments Incorporated at www.TI.com.
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**************************************************************************************************/
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/******************************************************************************
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Copyright 2004-2005 IAR Systems. All rights reserved.
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Updated by Chipcon to not clear ?CBANK at init.
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******************************************************************************/
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#include "iar_common.h"
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PROGRAM CSTARTUP
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PUBLIC __program_start
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EXTERN ?B0
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EXTERNS_FOR_ALL_DPTR_SYMBOLS()
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REQUIRE ?B0
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REQUIRE __call_main
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#if (__NUMBER_OF_DPTRS__ > 1)
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REQUIRE ?RESET_DPS
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#endif
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#if (__CORE__ == __CORE_EXTENDED1__)
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REQUIRE __call_init_extended1
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#endif
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; Uncomment this when rom-monitor requires 3 NOPS between statements.
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; REQUIRE ?ROM_MONITOR_NOPS
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RSEG REGISTERS:NOROOT:DATA
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PUBLIC ?REGISTERS
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?REGISTERS:
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//------------------------------------------------------------------------
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// The C stack segment. Should be mapped into internal data RAM
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//
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// ISTACK: Should be mapped into internal data RAM
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// PSTACK: Should be mapped into external data RAM page
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// XSTACK: Should be mapped into external data RAM
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// EXT_STACK: Should be mapped into external data RAM
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//
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//------------------------------------------------------------------------
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// The C stack is used for LCALL's and temporary storage for
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// code generator help-routines (math etc). The stack will be
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// located after all other internal RAM variables if the stan-
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// dard linking procedure is followed. Note that C interrupt
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// routines can double stack size demands.
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//
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//------------------------------------------------------------------------
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RSEG ISTACK:NOROOT:IDATA
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PUBLIC ?ISTACK_START
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?ISTACK_START:
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RSEG PSTACK:NOROOT:XDATA
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PUBLIC ?PSTACK_START
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?PSTACK_START:
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RSEG XSTACK:NOROOT:XDATA
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PUBLIC ?XSTACK_START
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?XSTACK_START:
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RSEG EXT_STACK:NOROOT:XDATA
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PUBLIC ?EXT_STACK_START
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?EXT_STACK_START:
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//------------------------------------------------------------------------
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//
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// Define reset vector.
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//
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//------------------------------------------------------------------------
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COMMON INTVEC:CODE:ROOT(0)
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// The reset vector must be located at address zero, the reset
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// vector is located first in the INTVEC segment. This segment
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// must thus be located at address zero. Be carefull if using
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// assembler sequences located with the ASEG directive, which may
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// prevent the INTVEC segment from being located at address zero.
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// Not enforcing location at address 0 for boot loader for OAD.
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// LIMIT SFB(INTVEC),0,0,"The INTVEC segment must begin at address zero"
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?reset_vector:
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DB 0x02 ; LJMP
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#if defined(START_INIT_IN_FAR)
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DB BYTE3(__program_start)
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#endif
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DB high(__program_start)
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DB low(__program_start)
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//------------------------------------------------------------------------
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//
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// Initialize the chip to suit IAR ICC8051 Compiler
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//
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//------------------------------------------------------------------------
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RSEG CSTART:CODE:ROOT
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EXTERN ?REGISTER_BANK
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REQUIRE ?ISTACK_START
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REQUIRE ?REGISTERS
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REQUIRE ?reset_vector
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__program_start:
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MOV PSW,#(?REGISTER_BANK << 3)
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//------------------------------------------------------------------------
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//
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// Reset of bank registers and stack pointers
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// ==========================================
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//
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// ?RESET_SP: Resets the IDATA stack pointer
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// ?RESET_ESP: Resets the extended stack pointer
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// ?RESET_PSP: Resets the PDATA stack pointer
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// ?RESET_XSP: Resets the XDATA stack pointer
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//
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// ?RESET_CODE_BANK: Resets the current code bank register
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// ?RESET_PDATA_BANK: Resets the high byte of PDATA page register
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//
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// ?RESET_DPS: Resets the DPTR selector (point at DPTR0)
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//
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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//
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// Reset idata or extended stack pointer
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// extended stack pointer if the extended stack is used
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// otherwise, the ordinary stack pointer
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//
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//------------------------------------------------------------------------
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#if (defined(__EXTENDED_STACK__) )
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//
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// Reset extended stack pointer
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//
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PUBLIC ?RESET_ESP
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REQUIRE ?EXT_STACK_START
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EXTERN ?ESP
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?RESET_ESP:
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MOV SP,#low(sfb(EXT_STACK))
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MOV ?ESP,#high(sfb(EXT_STACK))
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#else
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//
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// Reset idata stack pointer
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//
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PUBLIC ?RESET_SP
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REQUIRE ?ISTACK_START
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?RESET_SP:
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MOV SP,#SFB(ISTACK)
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#endif
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//------------------------------------------------------------------------
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//
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// Reset pdata stack pointer
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//
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//------------------------------------------------------------------------
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RSEG CSTART:CODE:NOROOT
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PUBLIC ?RESET_PSP
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EXTERN ?PSP
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REQUIRE ?PSTACK_START
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REQUIRE ?RESET_PDATA_BANK
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EXTERN ?PSTACK
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?RESET_PSP:
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MOV ?PSP,#low(sfe(PSTACK))
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//------------------------------------------------------------------------
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//
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// Reset xdata stack pointer
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//
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//------------------------------------------------------------------------
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RSEG CSTART:CODE:NOROOT
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PUBLIC ?RESET_XSP
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EXTERN ?XSP
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REQUIRE ?XSTACK_START
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EXTERN ?XSTACK
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?RESET_XSP:
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MOV ?XSP,#low(sfe(XSTACK))
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MOV ?XSP+1,#high(sfe(XSTACK))
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//------------------------------------------------------------------------
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//
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// Reset code bank
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//
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//------------------------------------------------------------------------
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#if ( (__CODE_MODEL__ == __CM_BANKED__) || ( __CODE_MODEL__ == __CM_NEAR__ ) )
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RSEG CSTART:CODE:NOROOT
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PUBLIC ?RESET_CODE_BANK
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EXTERN ?CBANK
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?RESET_CODE_BANK:
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NOP
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// MOV ?CBANK,#0x00
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#endif
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//------------------------------------------------------------------------
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//
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// Reset pdata page
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//
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//------------------------------------------------------------------------
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RSEG CSTART:CODE:NOROOT
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PUBLIC ?RESET_PDATA_BANK
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EXTERN ?PBANK
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EXTERN ?PBANK_NUMBER
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?RESET_PDATA_BANK:
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MOV ?PBANK,#?PBANK_NUMBER
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#if (defined ( __EXTENDED_DPTR__))
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EXTERN ?PBANK_EXT
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?RESET_PDATA_BANK_EXT:
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MOV ?PBANK_EXT,#0x00
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#endif
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//------------------------------------------------------------------------
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//
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// Reset data pointer select register
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//
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//------------------------------------------------------------------------
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#if (__NUMBER_OF_DPTRS__ > 1)
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RSEG CSTART:CODE:NOROOT
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PUBLIC ?RESET_DPS
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EXTERN ?DPS
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?RESET_DPS:
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MOV ?DPS,#0x00
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#endif
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//------------------------------------------------------------------------
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//
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// Initialize the extended1 core
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//
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//------------------------------------------------------------------------
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#if (__CORE__ == __CORE_EXTENDED1__)
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REQUIRE __call_init_extended1
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RSEG CSTART:CODE:NOROOT
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PUBLIC __call_init_extended1
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EXTERN __init_extended1
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__call_init_extended1:
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DB 0x12 ; LCALL
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#if defined(START_INIT_IN_FAR)
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DB BYTE3(__init_extended1)
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#endif
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DB high(__init_extended1)
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DB low(__init_extended1)
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#endif
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//------------------------------------------------------------------------
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//
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// Jump to the code that performs the rest of the system initialization
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// before calling main().
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//
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//------------------------------------------------------------------------
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RSEG CSTART:CODE:NOROOT
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EXTERN ?cmain
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__call_main:
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LJMP ?cmain
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ENDMOD
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;----------------------------------------------------------------;
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; Virtual registers ;
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; ================= ;
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; Below is some segment needed for the IAR ICC C/EC++ compiler ;
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; ;
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; BREG : A segment for 8 bit registers for use by the compiler. ;
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; ?B0 is the first register. ;
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; VREG : Segement that holds up to 32 virtual registers for ;
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; use by the compiler. ?V0 is the first register. ;
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; PSP : Segment containing the PDATA stack pointer (?PSP) ;
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; XSP : Segment containing the XDATA stack pointer (?XSP) ;
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; ;
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;----------------------------------------------------------------;
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; NOTE: The XLINK varialbe _NR_OF_VIRTUAL_REGISTERS must be ;
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; defined to set the size for the VREG segment. ;
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;----------------------------------------------------------------;
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MODULE VIRTUAL_REGISTERS
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PUBLIC ?B0
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PUBLIC ?V0
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PUBLIC ?PSP
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PUBLIC ?XSP
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RSEG BREG:BIT:NOROOT
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?B0:
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DS 8
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RSEG VREG:DATA:NOROOT
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EXTERN _NR_OF_VIRTUAL_REGISTERS
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?V0:
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DS 0
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RSEG PSP:DATA:NOROOT
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EXTERN ?RESET_PSP
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REQUIRE ?RESET_PSP
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?PSP:
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DS 1
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RSEG XSP:DATA:NOROOT
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EXTERN ?RESET_XSP
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REQUIRE ?RESET_XSP
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?XSP:
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DS 2
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ENDMOD ; VIRTUAL_REGISTERS
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;----------------------------------------------------------------;
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; Register banks ;
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; ================= ;
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; Below is some segment needed for the IAR ICC C/EC++ compiler ;
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; ;
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; The register banks will only be included if the #pragma ;
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; register_bank is used for the corresponding register bank ;
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; ;
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;----------------------------------------------------------------;
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MODULE REGISTER_BANK0
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PUBLIC __REG_BANK_0
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ASEGN __REG_BANK0:DATA,0x00
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__REG_BANK_0:
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DS 8
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ENDMOD
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MODULE REGISTER_BANK1
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PUBLIC __REG_BANK_1
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ASEGN __REG_BANK1:DATA,0x08
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__REG_BANK_1:
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DS 8
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ENDMOD
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MODULE REGISTER_BANK2
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PUBLIC __REG_BANK_2
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ASEGN __REG_BANK2:DATA,0x10
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__REG_BANK_2:
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DS 8
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ENDMOD
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MODULE REGISTER_BANK3
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PUBLIC __REG_BANK_3
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ASEGN __REG_BANK3:DATA,0x18
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__REG_BANK_3:
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DS 8
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ENDMOD ; REGISTER_BANK3
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END
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