This post is for anyone else that may have similar questions.

In the project folder, I created a helloworld folder. In that I placed a helloworld.builder file as follows:

{
“format”: “8bit-Unity Project”,
“formatVersion”: 2,
“general”: {
“disk”: “helloworld”,
“code”: [
“projects/helloworld/src/helloworld.c”
],
“shared”: [],
“charmap”: [],
“tilesize”: “None”
},
“platform”: {
“Atari”: {
“music”: [],
“chunks”: [],
“diskSize”: “180KB”,
“crunchAssets”: “No”,
“networkDriver”: “IP65(TCP/UDP)”
}

}
}

I created a src subfolder, in that I created a helloworld.c as follows:

#include <cc65.h>
#include "unity.h"
#include <stdio.h>
#include <string.h>

char st[]={"hello world"};

int main(void) 
{

	// Reset screen
	clrscr();
    printf("%s\n",st);

    while(1) {
       
    }

return 1;
}

At this point I received a screenshot which I’ve attached.

However, this is not what I was expecting. I was expecting a cool game like pac-man.

OK, I will adjustment my expectations.

I think I will be OK with writing in cc65, but the main thing is – I guess I need to learn what 8bit-unity is offering in terms of sdk….I’ll probably post more questions.

also thanks for the help, I may or may not have any manners – but actually I hope to produce a game, and have fun doing so, thanks for your interesting project.

#include <cc65.h>
#include "unity.h"

int main(void) 
{
    InitBitmap();
	ClearBitmap();
	ShowBitmap();

    txtX = 15; txtY = 2;

    PrintStr("hello world\n");

    while(1) {
       
    }

return 1;
}

This kind of belies the true progress I’ve made. I’ve gone into targets/atari looked at dli.s and vbi.s and gone through the documentation again.

I’ve played some RMT files, done through demo – and overall I like everything I see, it’s logical, well done, and could be very helpful. There is a “but” coming.

And I’ve put grubs on a real Atari. Therein lies a problem. If on an Atari 800XL, NTSC using XEP80-II as output, it just plain doesn’t work. That device has an HDMI converter that cannot handle frame flicker modes.

Luckily my system has a couple a/b switches to quickly switch out to a true s-video to s-video monitor mode. But while that mode does look “OK” – until I blink. When I blink I clearly see one frame, not the other. And be cause the flicker quite clearly occurs when I blink, the mode causes me to concentrate on my blinking – which drives me frankly mad.

I don’t know if this can be overcome. The emulator has frame blending that works, but is there any real atari output that frame blends? For me it needs to work on a real atari,and I’m not sure I ever would’ve used interpainter. Some people did, I guess – maybe not me.

still the music player and networking stuff and automatic disk creation, is a lot. Pity about the 160x200x9 mode. Does any known scan doubler, converter correctly do frame blending for a real atari?