PUTS limitations?

[Sherpa Doug]

<font face="Courier New" size=-1>The following is a set of help messages I want to send out in response to a user query. On the 16C58A address 0600 - 07FF is the last segment of ROM and is empty except for this function. I can send any 3 or 4 lines but if I uncomment more than that I get "OUT of ROM" even though there is lots of space in the segment. Why? Using #seperate instead of #org produces about the same result. I am using PCB 3.110.

#org 0x0600
SendHelp() { //Spew help messages
puts("Fxxxxx<cr> sets frequency to xxxxx Hz");
// puts("Bxxxxx<cr> sets burst length to xxxxx microseconds");
// puts("Dxxxxx<cr> sets Responder delay in microseconds");
// puts("P1<cr> to enable 1pps pinger mode");
puts("P0<cr> to disable pinger mode");
// puts("Only frequencies between 25kHz and 30kHz supported");
// puts("due to transducer limitations");
puts(__TIME__ __DATE__);
Verbose = false;
}

Segment Used Free
--------- ---- ----
0000-01FF 360 149
0200-03FF 406 90
0400-05FF 214 281
0600-07FF 74 426

Thanks,
</font>
___________________________
This message was ported from CCS's old forum
Original Post ID: 14026

[PCM programmer]

:=The following is a set of help messages I want to send out in response to a user query. On the 16C58A address 0600 - 07FF is the last segment of ROM and is empty except for this function. I can send any 3 or 4 lines but if I uncomment more than that I get "OUT of ROM" even though there is lots of space in the segment. Why? Using #separate instead of #org produces about the same result. I am using PCB 3.110.
----------------------------------------------------------
I don't have PCB, but I took your code and compiled it for
a 16C558, which is very similar to a 16C58 -- only it works
with PCM. It compiled OK. I installed PCM vs. 3.110 for
that test.

What happens if you don't #org the function ?
The .LST file shows that if you #org it, the compiler always
generates a CALL to the function. At least, it does this with
PCM. I know that your PIC only has two stack levels, and this
might be the cause of the problem.
___________________________
This message was ported from CCS's old forum
Original Post ID: 14030

[Sherpa Doug]

:=:=The following is a set of help messages I want to send out in response to a user query. On the 16C58A address 0600 - 07FF is the last segment of ROM and is empty except for this function. I can send any 3 or 4 lines but if I uncomment more than that I get "OUT of ROM" even though there is lots of space in the segment. Why? Using #separate instead of #org produces about the same result. I am using PCB 3.110.
:=----------------------------------------------------------
:=I don't have PCB, but I took your code and compiled it for
:=a 16C558, which is very similar to a 16C58 -- only it works
:=with PCM. It compiled OK. I installed PCM vs. 3.110 for
:=that test.
:=
:=What happens if you don't #org the function ?
:=The .LST file shows that if you #org it, the compiler always
:=generates a CALL to the function. At least, it does this with
:=PCM. I know that your PIC only has two stack levels, and this
:=might be the cause of the problem.

Since it is only called once the compiler tries to inline it if I don't use #separate or #org, and main() uses most of that segment so I get "Out of ROM". The functions have to be called from main() because of the stack limit.

I tried dividing the puts's into three functions but I get the same result.

#separate
SendHelp1() { //Spew help messages
puts("Fxxxxx<cr> sets frequency to xxxxx Hz");
puts("Bxxxxx<cr> sets burst length to xxxxx microseconds");
puts("Dxxxxx<cr> sets Responder delay in microseconds");
}
#separate
SendHelp2() { //Spew help messages
puts("P1<cr> to enable 1pps pinger mode");
puts("P0<cr> to disable pinger mode");
puts("Only frequencies between 25kHz and 30kHz supported");
}
#separate
SendHelp3() { //Spew help messages
puts("due to transducer limitations");
puts(__TIME__ __DATE__);
Verbose = false;
}//SendHelp


___________________________
This message was ported from CCS's old forum
Original Post ID: 14032