Initializing unused memory location using Linker Script or any other method

Hello,

Is there any option within the Kiel Compiler ( using Linker Script ) for filling the unused memory location (0x00) with the user determined byte say 0x02 for 8051 type MCUs

Best regards,
Denn

 RE: Initializing unused memory location using Linker Script or any other method

You would have to do this in the startup file:

http://www.keil.com/support/man/docs/c51/c51_ap_customfiles.htm

 RE: Initializing unused memory location using Linker Script or any other method

Dear Andy Nel,

I meant to say the Flash memory location.

Its better to initialise the unused flash locations with a known byte 0x02 before programming the MCU.Is there any way to do that in Keil IDE

regards,
Denn

 RE: Initializing unused memory location using Linker Script or any other method

Usually, device programmers have this facility.

Otherwise, you would do it as part of the conversion to Intel Hex format, or whatever.

Note that 0x02 wouldn't be a particularly good choice for an 8051; the standard flash erased state of 0xFF is fairly innocuous, and a NOP is 0x00...

See: http://www.8052.com/users/wek/8051op.pdf
And: http://www.nxp.com/acrobat_download/various/80C51_FAM_PROG_GUIDE_1.pdf

 RE: Initializing unused memory location using Linker Script or any other method

http://www.keil.com/forum/docs/thread14220.asp