hernan43 wrote:What would cause the Gameboy core to not provide audio over HDMI? Right now all my cores are providing audio over HDMI except the Gameboy core. If I plug headphones into the line out on the IO board it does provide audio just fine. For some reason it does not want to provide audio over HDMI.
Now if I hook it up to a different HDMI display the audio works fine. So it is 100% an issue with the particular display I am using. I am just curious what the difference would be.
Mills wrote:Hi, I was going to post this on github, but I think it is good to post here.
I tested a lot of games and demos, and the core is replicating everything like a real game boy , even sprite flickering (and some dma transfer flicker I saw in a demo I made).
But I noticed bugs in some demos and games that use scanline interrupts, it looks like it is not fast enough or something.
For example prehistorik man uses scanline interrupts to simulate parallax and some cool effects. This game runs with a lot of gfx missing in menu, and starting a new game shows just a black screen.
Also tested demos like GEJMBOJ, and the scanline effects are also missing.
A lot of game boy color games and demos use scanline interrupts to draw "highcolour" images (rayman, cannon fodder), or to change palette every scanline... and all of this is also showing gfx errors.
12characters wrote:I am curious about the format of the palettes (.gbp). A hex dump of DMG.gbp gives:
Code: Select all
82 82 14 51 73 56 30 5a 5f 1a 3b 49 00 00 00 00
I recognise the first 12 bytes as the 4 colours of the palette, but what is the purpose of the 4 zero bytes at the end?
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// GBP file format is simple. There are 4 palette colors using 8 bit
// rgb, starting from lightest ending in darkest for a total of 12 bytes.
// The last several bytes are 0, reserved for future use.
peepsalot wrote:I've found that the GBC game "Project S-11" has glitched graphics around the title screen and in some of in-game sprites. Not sure if this is a issue with the core itself, or could it be a bug due to the "sameboy" bios?
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