Chip 8

[smcd]

To load text into an edit window, read it and then SetWindowText, or SendMessage with WM_SETTEXT, or to append (in a rather hacky sort of way) you can SendMessage with EM_REPLACESEL if the cursor is at the end of the text

If this isn't what you want, I'm not really sure what you're looking for - try to rephrase the question

#include <windows.h>
#include <memory.h>
#include <stdio.h>
#include <commctrl.h>
#include <commdlg.h>

BOOL LoadFile(HWND hEdit, LPSTR pszFileName)
{
	FILE *hFile;
	BOOL bSuccess = FALSE;

	hFile == fopen("log.txt", "w");

	if(hFile != INVALID_HANDLE_VALUE)
	{

		if(1)
		{
			if(pszFileText != NULL)
			{
				DWORD dwRead;
     
				if(fprintf(hFile, "Here is the memory:\n %x ", memory);)
				{
					//pszFileText[dwFileSize] = 0; // Null terminator
					//if(SetWindowText(hEdit, pszFileText))

					bSuccess = TRUE; // It worked!
				}
				GlobalFree(pszFileText);
			}
		}

		CloseHandle(hFile);
	}

	return bSuccess;
}

Whoah shizzie, you're mixing standard C functionality with Windows in an improper way. fopen returns NULL if it fails to open the file, you shouldn't use Windows constants in instances like that. Also, what exactly is that code supposed to do? It looks like you're opening for writing, when later it looks like you're trying to read... Also you free something that is never allocated, nor is it commented that it is dynamically allocated coming into the function. Calling CloseHandle on a FILE* is improper as well, you should use fclose. Not to mention some variable names that appear in the function that aren't declared?! ^gives up trying to figure out that code^

 

[ShizZy]

Seth, I know that's really sloppy. I just hacked in what I had to his function.. didn't test it. If all he wants is to spit out the memory bin to a text file, then all that is needed is the fopen, fprintf, and fclose commands that I had in the original function.

 

[secretemu]

ok so is there something wrong it wont compile
(im using dev c++) just incase the problem is that it is ment for c++.net

 

[ShizZy]

Secretemu, tell me in detail exactly what you want the script to do, and I'll fix it.

 

[secretemu]

this is what i done from what you told me

#include <windows.h>
#include <memory.h>
#include <stdio.h>
#include <commctrl.h>
#include <commdlg.h>
#include "Main.h"

static char g_szClassName[] = "MyWindowClass";
static HINSTANCE g_hInst = NULL;
extern unsigned char memory;
#define IDC_MAIN_TEXT 1001

BOOL LoadFile(HWND hEdit, LPSTR pszFileName)
{
FILE *hFile;
BOOL bSuccess = FALSE;
LPSTR pszFileText;
hFile == fopen("log.txt", "w");

if(hFile != INVALID_HANDLE_VALUE)
{

if(1)
{
if(pszFileText != NULL)
{
DWORD dwRead;

if(fprintf(hFile, "Here is the memory:\n %x ", memory)
{
//pszFileText[dwFileSize] = 0; // Null terminator
//if(SetWindowText(hEdit, pszFileText))

bSuccess = TRUE; // It worked!
}
GlobalFree(pszFileText);
}
}

CloseHandle(hFile);
}

return bSuccess;
}


here is what comes up on the compiler

C:\Dev-Cpp\main.cpp In function `BOOL LoadFile(HWND__*, CHAR*)':
29 C:\Dev-Cpp\Examples\Copy of FileEditor\Main.c parse error before ';' token
main.cpp C:\Dev-Cpp\main.cpp At global scope:
37 C:\Dev-Cpp\main.cpp syntax error before `return'
2 C:\Dev-Cpp\main.cpp:38 [Warning] no newline at end of file
C:\Dev-Cpp\Makefile.win [Build Error] [main.o] Error 1

 

[secretemu]

i want a text file to open
with the binary bits
eg.

10010101 10011001
10011001 11010101
etc

 

[smcd]

This isn't the best of code but it seems to work...

BOOL LoadFileBits(HWND hEdit, char szFileName[])
{
	FILE *in;
	int i;
	int j;
	int l=0;
	int len;
	unsigned char c;
	char szBuf[9];
	in = fopen(szFileName, "rb");
	if(in == NULL)
		return FALSE;
	while((len = fread(&c, 1, 1, in))>0)
	{
		l++;
		memset(szBuf, '\0', 9);
		for(i=0,j=7;i<=7;i++,j--)
		{
			szBuf[j]=((c>>i)&0x01)?'1':'0';
		}
		SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)szBuf);
		if(l<8)
			SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)" ");
		else
		{
			l=0;
			SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)"\r\n");
		}
	}
	fclose(in);
	return TRUE;
}

 

[ShizZy]

Ahhh, I gotcha. Why not just open it up in a binary editor then? Wouldn't that save the trouble?

 

[ShizZy]

Time to retire this project. If anyone's interested in the source, contact me. The only reason I didn't post it is because there are a half dozen others, and a lot of them seem to work better then mine. (though not all ) It's also a debug build, I didn't feel like figuring out why the release build was giving be errors. So, you need MSVC++ installed or the proper dlls to run it.

 

[zenogais]

wow, your emulator has uh quite a few problems. It could use some debugging and the Chip8 emulation is very far from complete. But nice graphics

 

[ShizZy]

Think so? I did never finish the User Input, but most Chip8 games seem to run right. (Except Space Invaders, couldn't get past the title screen). My BCD isn't right either, so no scores. And it crashes if you try to load a second rom. Well.. okay, maybe a few glitches here and there - but it served it's purpose, which was for me to learn the concept of emulation.

Maybe I'll put a few more hours into it sometime...

 

[smcd]

It crashes on most games for me, and if you load a game after having loaded one, it crashes no matter if it runs the game OK the first time around or not.

 

[Doomulation]

secretenum I'll give you a little tip. There are tags called [ code ]. Sourround your code with them and it'll be much more readable
ShizZie: nice you've done an emulator. I'd say you fix those bugs and the thingies that keeps a release build, though Get on it!

 

[secretemu]

how do i load each register

in the example file i was given this

6XKK - register[X] = KK

but how do you express that in c++

thanks

 

[hap]

Parse each opcode by masking out unneeded bits for that specific function. In this case: reg[op>>8&0xf]=op&0xff;

 

[ChaosBlade]

secretemu, no offense, but i think you need to practice your programming a little before taking such a challanging task as emulation. Its not that im against asking for help, i did that many times myself, but emulation isnt your average programming task.

All in all, A little practice with the languauge and IDE and some study on computer structure issues such as bases (binary, octal, hexa-decimal etc) and bit mathmetics wont hurt.

Just trying to help (and hopefully did),

-- Chaosblade.

 

[hap]

Cool; one of 'our' emus is going around on emulation news sites right now, as seen on emulation9.com and retrogames.com, maybe other sites too. And the lucky winner is zenogais, with NeoChip8

 

[bcrew1375]

Darn it, zenogais. You suck, you show-off !

 

[zenogais]

I noticed that a while ago, I didn't tell them about it, they found it on my website

 

[bcrew1375]

Well, congratulations... I guess...