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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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EB632 Arkusz danych(PDF) 82 Page - Freescale Semiconductor, Inc |
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EB632 Arkusz danych(HTML) 82 Page - Freescale Semiconductor, Inc |
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82 / 112 page  Functional Differences Between MSC8101 (Mask 2K42A) and MSC8103 (Mask 2K87M), Rev. 2 82 Freescale Semiconductor Bootloader Program A Bootloader Program This appendix lists the boot program for mask set 2K87M of the MSC8103. Note: The first instruction in the boot code sets the stack address to 0x68000. In the event of a hard or soft reset, user data at this location is overwritten by the boot code. In addition, source code should not be bootloaded to this address due to corruption of the stack during the bootload program execution. ;/****************************************************************/ ;/* */ ;/* File : boot_code_revA.asm */ ;/* */ ;/* (C) Copyright Freescale Inc, 2002. */ ;/* All rights reserved */ ;/* */ ;/* */ ;/* Description: */ ;/* This file contains the MSC8103 RevA boot code as */ ;/* specified in the boot section of the Reference Manual. */ ;/* */ ;/* */ ;/* Modifications from Rev0: */ ;/* - Host checksum fixed (Erratum Boot1) */ ;/* - SRAM base address is ISB dependent (Erratum Boot2) */ ;/* - Software watchdog handled in host code instead of */ ;/* disabled. */ ;/* - Added I2C serial boot */ ;/* */ ;/****************************************************************/ STACK_ADDR equ $68000 BOOT_BYPASS_ADD equ $0 ; BANKS MASK0_A equ $00f0ff00 BASE0_A equ $00f0ff02 BASE0_D equ $00f00000 BASE1_A equ $00f0ff06 BASE_ROM_ADDRESS equ $00f80000 BASE_EXEPTION_TABLE equ $00f80000 EXTERNAL_MEM_BOOT_TABLE equ $fe000110 ; BOOT_REV_REG BOOT_REV_REG equ BASE_ROM_ADDRESS+$ffa0 ; Host Interface Registers ; Dsp Side HCR equ BASE0_D+$0000 HPCR equ BASE0_D+$0020 |
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