Chip16 Official thread (Development/Suggestions)

[paul_nicholls]

All this is looking great guys!
Once I feel better from being sick I will get back to my programming too

[tronix286]

New version of CHIP-16 debugger:
v0.2 alpha 09.06.2012
+ Added Step Over debugging mode
~ Update README.TXT file

New versions of CHIP-16 debugger now avalible on google code: http://code.google.com/p/chip16debugger/ Please submit any issues here.

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CHIP-16 Debugger

[Prads]

Little progress with my chip16 compiler. Added Graphics and input capabilities.

Here's a small demo I made, it's called 'Pikachu'. :P Use your controller 1 direction button to move pikachu on screen.

Image pikachu = "pikachu.bin", 42, 46;
ConstString title = "Pikachu by Prads";
ConstString demo = "Chip16 Compiler Demo";

void main() {
	var x;
	var y;
	x = 0; 
	y = 0;

	while (1) {
		ClearScreen;

		if (GetController1 & 1) {
			y = y - 1;
		} else if (GetController1 & 2) {
			y = y + 1;
		} else if (GetController1 & 4) {
			x = x - 1;
		} else if (GetController1 & 8) {
			x = x + 1;
		}

		Print(demo, 50, 220);
		Print(title, 60, 200);
		Draw(pikachu, x, y);
		WaitScreenRefresh;
	}
}

After looking at that demo I realized that the font I created looks total CRAP! lol So, if anyone has made an 8x8 font then please send it to me.

Attached Images

pikachu.jpg (40.8 KB, 26 views)

Attached Files

pikachu.zip (1.5 KB, 9 views)

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My Programming Projects: www.pradsprojects.com

[4p3r0]

Some nice 8x8 fonts:

http://orangetide.com/nesdev/gamefonts/
http://bmf.wz.cz/
http://pics.pineight.com/nes/8x8s.png

[refraction]

That's awesome! Well done! That'll make life easier

__________________

http://www.pcsx2.net
Intel i7 920 @ 3.4Ghz, POV GTX 570 1.3Gb, 1.8Tb HD space, 6Gb OCZ Reaper PC3-14400 Triple Channel
Dont PM me for help, use the forums, thats what its for!

My Chip16 Emulator RefChip16 http://code.google.com/p/refchip16/

[tykel]

Prads: Look in the "Sources" folder of the program pack... some games have "font.bin" files, just steal those (and check the source code on how to use them) :P

__________________

tchip16 (chip16 assembler) Js16 (browser chip16 emulator)
mash16 (chip16 emulator) img16 (chip16 sprite converter)
______________________________________

Desktop: i5 750 @ 3.6 Ghz, 4GB ram, GTX 570 OC | Windows 7 Pro 64
Laptop: (Thinkpad) i5 430M, 4GB ram, Intel IGP | Arch Linux, Windows 7 Pro 64

[Stefonzo]

I really like the chip-16 documentation then the chip-8 one that I've been using (got about halfway finished) so I'm going to work on making this one, challenge accepted!

[paul_nicholls]

In my Chip16 emulator, I have a question about the instruction below:

C4 00 00 00	PUSHF 			Store flags register on stack. Increase SP by 2.

Since there are only 8 flags maximum, how come SP isn't increased by 1 (byte)?
Why is it increased by 2 bytes (word)?

[refraction]

Originally Posted by paul_nicholls

Since there are only 8 flags maximum, how come SP isn't increased by 1 (byte)?
Why is it increased by 2 bytes (word)?

for 16bit alignment, i would guess.

__________________

http://www.pcsx2.net
Intel i7 920 @ 3.4Ghz, POV GTX 570 1.3Gb, 1.8Tb HD space, 6Gb OCZ Reaper PC3-14400 Triple Channel
Dont PM me for help, use the forums, thats what its for!

My Chip16 Emulator RefChip16 http://code.google.com/p/refchip16/

[tronix286]

Originally Posted by paul_nicholls

Since there are only 8 flags maximum, how come SP isn't increased by 1 (byte)?
Why is it increased by 2 bytes (word)?

Because all other registers are 16-bit. So, for example - i need check carry flag without jumps. I do:

       pushf           ; Store flags on stack.SP increase by 2
       pop r1          ; load flags from stack to register R1
       shl r1,13       
       shr r1,15
                         ; in R1 i have 1 or 0, depending on carry flag state

2all: new version of chip16 debugger avalible (ver 0.5 alpha). Some bugs fixed, added stack view panel. Added source code (delphi 7)
http://code.google.com/p/chip16debugger/

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CHIP-16 Debugger

[paul_nicholls]

Thanks for the info tronix286
I will look at the new debugger version...I will find it most helpful as I am having trouble with my emulator and decoding op codes! LOL

[tykel]

I have a suggestion to amend the spec:
The CLS instruction is currently supposed to reset the background colour to 0. I'm not sure this is what people want when they clear the screen... And I don't think any roms make use of this. Does anybody abide by this in their emulator?
If not, I suggest we change its behaviour to simply clear the screen with the current bgc.

Also, I will have something interesting to show quite soon!

__________________

tchip16 (chip16 assembler) Js16 (browser chip16 emulator)
mash16 (chip16 emulator) img16 (chip16 sprite converter)
______________________________________

Desktop: i5 750 @ 3.6 Ghz, 4GB ram, GTX 570 OC | Windows 7 Pro 64
Laptop: (Thinkpad) i5 430M, 4GB ram, Intel IGP | Arch Linux, Windows 7 Pro 64

[ShendoXT]

I don't know for others but my software relies on the current way the CLS is processed.

As for surprise, can't wait. You always have some cool stuff to show

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Core i5 2400 3.1 Ghz | ASRock H67M | GTX460 768Mb | 8GB DDR3 1333 | 1500 Gb HDD
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Don't PM or ask me about VMP-MCR conversions. I will ignore you if you do.

[paul_nicholls]

Woo hoo! I finally got my Chip16 emulator to run a ROM sucessfully!!
It works on the Palette test one ATM...


That was thanks to the Chip16 debugger by tronix286

Now for the rest of the opcodes <G>

EDIT: it took me a while to realize that I needed to process twice the horizontal pixels that were passed in using the SPR command when drawing sprites!
It came out all wrong until I figured out that LOL

[refraction]

Well done mate! glad you got it sorted!

__________________

http://www.pcsx2.net
Intel i7 920 @ 3.4Ghz, POV GTX 570 1.3Gb, 1.8Tb HD space, 6Gb OCZ Reaper PC3-14400 Triple Channel
Dont PM me for help, use the forums, thats what its for!

My Chip16 Emulator RefChip16 http://code.google.com/p/refchip16/

[paul_nicholls]

Awesomesauce! I have managed to get my emulator to work on every ROM I have thrown at it now and it seems to work. The only things I haven't implemented are sound and sprite flipping

[refraction]

Well done Paul I'm sure you'll have no problem with either of them

__________________

http://www.pcsx2.net
Intel i7 920 @ 3.4Ghz, POV GTX 570 1.3Gb, 1.8Tb HD space, 6Gb OCZ Reaper PC3-14400 Triple Channel
Dont PM me for help, use the forums, thats what its for!

My Chip16 Emulator RefChip16 http://code.google.com/p/refchip16/

[paul_nicholls]

Thanks
The funny thing is that I am having trouble finding the source code for my Chip16 audio stuff that I posted here a little while back!

Would you happen to have it handy?

[refraction]

Afraid not, I made it up myself when I did mine

__________________

http://www.pcsx2.net
Intel i7 920 @ 3.4Ghz, POV GTX 570 1.3Gb, 1.8Tb HD space, 6Gb OCZ Reaper PC3-14400 Triple Channel
Dont PM me for help, use the forums, thats what its for!

My Chip16 Emulator RefChip16 http://code.google.com/p/refchip16/

[paul_nicholls]

Nevermind...I just found my Chip16 SID sound source code LOL
Thanks mate