EB632 datasheet(83/112 Pages) FREESCALE

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Bootloader Program

Functional Differences Between MSC8101 (Mask 2K42A) and MSC8103 (Mask 2K87M), Rev. 2

Freescale Semiconductor

HSR

equ

BASE0_D+$0040

HCVR

equ

BASE0_D+$0060

HOTX

equ

BASE0_D+$0080

HORX

equ

BASE0_D+$00a0

ELIRE

equ

BASE0_D+$1c20

ELIRF

equ

BASE0_D+$1c28

;the registers to be used are :

;

d4,d5 for reading from the host fifo

;

for holding the block address

;

for holding the size

;

for holding the checksum

;

for holding the ~checksum

;

d1,r6

for holding the IMMR

;

for holding the SRAM BASE MEM

;

d12,r15 for sw watchdog handling

;

During the loading proces the checksum is calculated for the whole

;

long and at the end of the block the two words in the calculated

;

checksum are XORed to generate the real checksum.

;---------- NMI0 (HDI16) offset 0xe00 -----

section nmi0

org

p:$0e00+BASE_EXEPTION_TABLE

nmi0

rte

endsec

;---------- NMI1 (TEA) offset 0xe40 -----

section nmi1

org p:$0e40+BASE_EXEPTION_TABLE

nmi1

rte

endsec

;---------- NMI2 (bus controller , memory write errors) offset 0xe80 -----

section nmi2

org p:$0e80+BASE_EXEPTION_TABLE

nmi2

rte

endsec

;---------- NMI3 (bus controller non aligned error) offset 0xec0 -----

section nmi3

org p:$0ec0+BASE_EXEPTION_TABLE

nmi3

rte

EB632 Datenblatt(PDF) 83 Page - Freescale Semiconductor, Inc

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