filling unused program space

[koulbassa]

Certain auto makers specify that unused program space be filled with commands that produce a graceful exit should the program counter go off in the weeds. Using the microchip assember, the fill command makes this easy. Unfortunately, CCS won't accept the following:

#asm
fill(GOTO 0x1FF), 0x7F
#endasm

The closest I can get to what I want is using the #ROM command, however I must still manually type in every entry in the command list:

#ROM 0x151, {0xBFF, 0xBFF, 0xBFF, etc., etc.)

Is there an easier way of doing this?
___________________________
This message was ported from CCS's old forum
Original Post ID: 12688

[Tomi]

If you are familiar to PC programming then you can write a small program to insert the requested data into the HEX file.

Example:
:100D700083168E1483124B21942064003A083902A2
:100D80000319C72EDD217808B700E32B4B21321958
:060D90005E2EBC2E630084 // last line of code
// insert your lines containing 0xBFF
:02400E00050D9E // config word (fuses)
:084000000100000000000000B7 // ID locations
:1042000008001000200028003000600000000000BE // data eeprom
:10421000000000000000000000000000000000009E
:10422000000005000500060005000500050003006C
:1042300003000900050005000B000900050005004A
:104240000500050005000500050005000500050046
:104250000500050005000500050005000500050036
:00000001FF
;PIC16F877


:=Certain auto makers specify that unused program space be filled with commands that produce a graceful exit should the program counter go off in the weeds. Using the microchip assember, the fill command makes this easy. Unfortunately, CCS won't accept the following:
:=
:=#asm
:=fill(GOTO 0x1FF), 0x7F
:=#endasm
:=
:=The closest I can get to what I want is using the #ROM command, however I must still manually type in every entry in the command list:
:=
:=#ROM 0x151, {0xBFF, 0xBFF, 0xBFF, etc., etc.)
:=
:=Is there an easier way of doing this?
___________________________
This message was ported from CCS's old forum
Original Post ID: 12701

[PCM programmer]

:=Certain auto makers specify that unused program space be filled with commands that produce a graceful exit should the program counter go off in the weeds. Using the microchip assember, the fill command makes this easy. Unfortunately, CCS won't accept the following:
:=
:=#asm
:=fill(GOTO 0x1FF), 0x7F
:=#endasm
:=
:=The closest I can get to what I want is using the #ROM command, however I must still manually type in every entry in the command list:
:=
:=#ROM 0x151, {0xBFF, 0xBFF, 0xBFF, etc., etc.)
:=
:=Is there an easier way of doing this?
-------------------------------------------

It's possible that you could do it in MPLAB, if that's
an acceptable method. Maybe they require that the filling
is done in the source code ?

I have MPLAB 5.7.40, and if I click on the Window menu,
and then click on Modify, and get a small dialog box.
Then I can enter the Start and End address, and the Fill
value (in hex), and it fills the program memory.

I can't find this feature in MPLAB 6.13, unless it's
hidden somewhere in the menu system.
___________________________
This message was ported from CCS's old forum
Original Post ID: 12778