MC68HC908AP16CFB datasheet(173/440 Pages) MOTOROLA

173 / 440 page

Monitor ROM (MON)

ROM-Resident Routines

MC68HC908AP Family — Rev. 2.5

Data Sheet

MOTOROLA

173

10.5.3 LDRNGE

LDRNGE is used to load the data array in RAM with data from a range

of FLASH locations.

The start location of FLASH from where data is retrieved is specified by

the address ADDRH:ADDRL and the number of bytes from this location

is specified by DATASIZE. The maximum number of bytes that can be

retrieved in one routine call is 255 bytes. The data retrieved from FLASH

is loaded into the data array in RAM. Previous data in the data array will

be overwritten. User can use this routine to retrieve data from FLASH

that was previously programmed.

The coding example below is to retrieve 64 bytes of data starting from

$EE00 in FLASH. The Initialization subroutine is the same as the coding

example for PRGRNGE (see 10.5.1 PRGRNGE).

LDRNGE

EQU

$FC00

MAIN:

BSR

INITIALIZATION

LDHX

#FILE_PTR

JSR

LDRNGE

Table 10-13. LDRNGE Routine

Routine Name

LDRNGE

Routine Description

Loads data from a range of locations

Calling Address

$FC00

Stack Used

7 bytes

Data Block Format

Bus speed (BUS_SPD)

Data size (DATASIZE)

Starting address (ADDRH)

Starting address (ADDRL)

Data 1

Data N

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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