SPMCK16Z4MPV20 datasheet(463/500 Pages) FREESCALE

463 / 500 page

M68HC16 Z SERIES

INITIALIZATION AND PROGRAMMING EXAMPLES

USER’S MANUAL

E-11

DC.W

BDM

;241

User Defined Interrupt Vector 186

DC.W

BDM

;242

User Defined Interrupt Vector 187

DC.W

BDM

;243

User Defined Interrupt Vector 188

DC.W

BDM

;244

User Defined Interrupt Vector 189

DC.W

BDM

;245

User Defined Interrupt Vector 190

DC.W

BDM

;246

User Defined Interrupt Vector 191

DC.W

BDM

;247

User Defined Interrupt Vector 192

DC.W

BDM

;248

User Defined Interrupt Vector 193

DC.W

BDM

;249

User Defined Interrupt Vector 194

DC.W

BDM

;250

User Defined Interrupt Vector 195

DC.W

BDM

;251

User Defined Interrupt Vector 196

DC.W

BDM

;252

User Defined Interrupt Vector 197

DC.W

BDM

;253

User Defined Interrupt Vector 198

DC.W

BDM

;254

User Defined Interrupt Vector 199

DC.W

BDM

;255

User Defined Interrupt Vector 200

E.1.4 INITSYS.ASM

Title : INITSYS

Description : Initialize & configure system including

the Software Watchdog and System Clock.

****************************************************************************

INITSYS:

;give initial values for extension registers

;and initialize system clock and COP

LDAB

#$0F

TBEK

; point EK to bank F for register access

LDAB

#$00

TBXK

; point XK to bank 0

TBYK

; point YK to bank 0

TBZK

; point ZK to bank 0

LDD

#$0003

; at reset, the CSBOOT block size is 512k.

STD

CSBARBT

; this line sets the block size to 64k

LDD

#$3830; async, both byte, R/W, AS, Zero WS, S/U SP, IPL all,

;AVEC off

STD

CSORBT

;

LDAA

#$7F

; w=0, x=1, y=111111

STAA

SYNCR

; set system clock to 16.78 Mhz

CLR

SYPCR

; turn COP (software watchdog) off,

; since COP is on after reset

E.1.5 INITRAM.ASM

Title : INITRAM

Description : Initialize the HC16's 1K internal SRAM

(put SRAM in memory map at $10000, bank 1)

and set the stack inside it.

*****************************************************************************

INITRAM:

;initialize internal SRAM and stack

LDD

#$0001

STD

RAMBAH

; store high ram array, bank 1

LDD

#$0000

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SPMCK16Z4MPV20 Datasheet(PDF) 463 Page - Freescale Semiconductor, Inc

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