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That version is basically pre-beta and is well known to be buggy.
Haha. I think he already knows.
Thanks very much for your help.
Lou.

My friend has a V4.0 compiler

That isn't a very definitive version number.

Wait for one of us to test it with vs. 4.109 later in the weekend.
We'll tell you if it works or not.

Its V4.013. T ...

well, a/abs(a) should fail when a=0, so its not a useful function as it stands.
A better one is:

#define sgn(x) ((x==0) ? 0 : ((x < 0) ? -1 : 1)) ...

Yes, that works for me also.
My friend has a V4.0 compiler. It has the same bug.

How do I find out if the bug has been reported?

Here is the code and the output wth the CCS V3.170b compiler.

#include <16f877A.h>
#fuses HS, NOLVP, NOWDT, PUT, NODEBUG
#use delay (clock = 20000000)
#use rs232 (baud=9600, xm ...

That's a great idea about blocking the memory. And I didn't use the math library in this project so that isn't a problem.

Thanks for the ideas tho,
Lou.

This is for a PIC 16F877A with the CCS PCM C Compiler, Version 3.170b,

ROM used: 2042 (100%)
Largest free fragment is 6

You have a compiler version that is limited to only 2K of ROM, instead ...

What is the ROM usage ? Look at the top of the .LST file. The .LST file
is in your project directory after a successful compilation.

Is your ROM usage close to 2K ? Do you have a version of ...

This is for a PIC 16F877A with the CCS PCM C Compiler, Version 3.170b, 16412. This is a limited edition compiler.
All seemed well, and then suddenly no more ROM.
I have:
- used #separate directive ...

If you were just looking for a interrupt if the input moved above or
below a fixed voltage, then you could use the comparator, and use
the INT_COMP interrupt. You could even change the reference ...

I've been reading and trying code to get the ADC to interrupt only when it changes. But it seems to interrupt every time I prime it, and none if I don't prime it. I want an interrupt only when the ADC ...

OK, I worked it out after finding the TRISB register:
At 72, RP0 (reg 3,bit 5) in the status register is set to 1. This switches access to register bank 1. This bank has the TRISB register in it.
At ...

I'm not that familiar with the 16F877A. Can someone please explain the following instructions from an assembly listing of a C program.

.................... output_low(EEPROM_SELECT);
00 ...

Could you post the .lst file for your routine.

Cheers. Here it is.
CCS PCM C Compiler, Version 3.170b, 16412

ROM used: 216 (11%)
...

I can't duplicate your problem. I don't have your test setup. I have an
ICD2. I believe you have a PicKit2. I tested it with vs. 4.109. I used
"Programmer" mode in MPLAB (not Debugger ...