Global Var

now seriously: your friend did not provide vital data that could have solved his problem earlier and save us time, headache and heartache! instead he offered money. YUK.

HI Eric!!
First thanks for your reply.

My code startup is:
START900.A51 because i use Philips P89LPC936.
It has 512 bytes of xdata.

I have modificated only this:

;  <o> XDATASTART: XDATA memory start address <0x0-0xFFFF>
;      the absolute start-address of XDATA memory
XDATASTART      EQU     0x000
;
;  <o> XDATALEN: XDATA memory length <0x0-0xFFFF>
;      the length of XDATA memory in bytes.
XDATALEN        EQU     0x200
;

i say no!!!!!!

i asking his help and ansewrs and he be ignored me

i think he liking to heat poeple up and spit the bit out yes???

he say lots but not say much for poeple to be using.

now he is not sir but he being something other yes!!!!

why are taking this so seriously? ok, I sometimes also think that I'd rather jump into a swimming pool filled with Pirenia fish rather than being bashes by Erik, but (un)fortunately he often knows what he is talking about (like this one!). so relax and enjoy the bottomless well of knowledge (gee, I'm poetic!)

IF i enable Use On-Chip XRAM i cant compile the aplication because :"ADRESS SPACE OVERFLOW".

tamik

you be wanting downuts you be must be talking by erac

you be wanting sarchastem you be must talking by erac

you be wanting anwser by simple problum you must be talking by erac

you be wanting to know goood ansewr by diffucult problam you be must be talkin gnot by erac

OK!!!
A simple questions:

Have i configurate START900.A51 for use On-Chip XRAM???
Is It necessary??

Thanks

you do this ardours task of reading the datasheet and find that e.g. this is an example, not supposedly correct ORL AUXR1,#0x40 will enable the internal xram.
Then right after the STARTUP: label (the one branched to from 0) you insert the proper instruction based on what you found in the datasheet.

Erik

you be wanting downuts you be must be talking by erac
while I have had a suspicion the above confirm my suspicion as to who "Erac" is.

anyhow you are totally wrong.

When I use the (common in the US) expression "I will bet you dollars to doughnuts" it means the if you will give me a doughnut if I'm right I'll give you a dollar if I'm wrong. Thus this does not mean that I will give anyone a doughnut.

you be wanting to know goood ansewr by diffucult problam you be must be talkin not by erac
there is a familiar expression "give a man a log and he will be warm for a day, set him on fire and he will be warm for the rest of his life" NO, NO, I am confusing sayings I was thinking of "give a man a fish and he will eat for a day, teach him to fish and he will eat for the rest of his life"

THUS, I consider it WRONG to solve peoples probems for them by feeding them the solution, REAL HELP is helping them to help themselves. Thus "here is the code you need" is not real help, whereas "in the datsheet you will find information related to SFR xxx, which will make you see what is wrong" is REAL help. That I prefer not to do this in a dry manner may upset some and some may like it, so what.

Erik

"give a man a log and he will be warm for a day, set him on fire and he will be warm for the rest of his life"

Might be considered cruel by some, but it certainly appeals to my sense of humour!

every time I hear of yet another attempt to cut costs on the expense of software development and tools, because it is considered simple and straight forward (anybody can do it, not? they disregard the most important part: doing it right!), I have to think of this phrase: "you can defeat gravity by jumping from a plane. but only temporarily, of course".

Thanks Erik,
But i have declared a global var in this way:
int idata Uc;
my program :

Memory model: Large: var in Xdata
Code size: Large: 64k
OS: RTX-51 full

My task that only acumulate a value not work.

void PIDb (void) _task_ B _priority_ 1 {
      Uc+=(value);

If my var is in idata is necesary enable xram??
Im trying all and it not work.
Im sure that it is a small thing but i cant find ...

This is my serial port initialization:

        P2M1 = 0;                                          /* P2 output modo 1, LEDs               */
        P1M1 = 0;                                          /* P1 output modo 1 -> COM1 activado    */

        BRGCON = 0x00;                             /* Para evitar que BRGEN este activo cuando inicializamos el baud rate  */
        SCON   = 0x52;                 /* initialize UART  (Modo 1: 8 bits, enable Tx)                         */
        BRGR0  = 0xF0;                 /* 9600 baud, 8 bits, no paridad, 1 bit de stop                         */
        BRGR1  = 0x02;
        BRGCON = 0x03;                             /* Activamos BRGEN  */

...

You probably don't want to use the large memory model then, if you do not want to have variables in XDATA by default.

read up on memory models in the manuals.

If I change my memory model my code dont compile because adress space overflow...