Kevin,
My best guess is that your local variable definitions are VERY wrong - you
might want to try:
void putchar( char ch )
{
unsinged char *pScreen;
unsinged char *pX;
unsinged char *pY;
char x;
char y;
pScreen = (unsigned char *)video;
pX = (unsigned char *)caratx;
pY = (unsigned char *)caraty;
x = *pX;
y = *pY;
..... etc etc etc
As this seems to be what you want to achieve. (Please note I don't have access
to the compiler itself at the moment - so I can't test this)
PeterT
-----Original Message-----
From: Kevin Zee [mailto:psy...@hughes.net]
Sent: Tuesday, 5 May 2009 11:35 AM
To: Sdcc-user@lists.sourceforge.net
Subject: [Sdcc-user] Simple question for someone
I have gotten the libraries to build an am trying (unsuccessfully) to
make a custom putchar.c (I removed the putchar.s file). This is what I
have so far:
#include "memory.h"
void putchar(char ch) {
*(unsigned char *)pScreen = video;
*(unsigned char *)pX = caratx;
*(unsigned char *)pY = caraty;
char x;
char y;
x = pX;
y = pY;
pScreen += y * 160;
pScreen += x * 2;
if (ch = 0x0d) {
// Adjust the cursor position, checking to see if we need to
scrool the screen
return;
}
return;
}
It gets errors on just about every line. The first error says syntax
error: token 'char' where I declare x. Then, everywhere that a variable
is mentioned, it says undefined identifier - even when I declare a variable
the .h file is.
#ifndef MEMORY_H
#define MEMORY_H
#define caratx 0x1FFE
#define caraty 0x1FFF
#define video 0x2000
#endif
I simply use "sdcc putchar.c" without quotes to compile.
I have been trying for hours to get this thing to work. What am I doing
wrong?
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