exxos's Atari, Amiga & retro forum

Ok, so Ive finally found time to fix the palette problem and here is the first pics of my game engine progress on the ATW800/2 Seurat FPGA:
As like the ET4000 thread though, there is no support for the lower than 640x400 resolutions.

If thats the case, then so be it; I will have to adjust the assets for the larger 640x480 screen, but Im hoping there is a way.

Anyway, this build is pretty similar to the ET4000 onel i.e. at a fairly basic level... not much more than a proof of concept demo with some joystick movement, but its slowly progressing. Actually, its more 'wide screen' at 400px wide for now (same as the 'real' MK CPS arcade machine).

As its not clear in the current version of the manual, I will just mention that the Seurat colour look up table data needs to be in word size per palette index, with the colours set to: R5G6B5.

I can probably push things forwards a bit, but Im actually waiting for some information regarding the internal blitter (as well as the low res screenmodes), which will improve screen draw drastically. As you may know from my other thread, the ST blitter (in HOG) is doing all the pushing across the ST<>ISA bus in this build, so not really ideal.

More to come later, I guess.

That's looking pretty good.

I've been following the pertinent thread
over at Atari-Forum as well.

Thanks for the work on this.

Darklord wrote: Sun Jun 08, 2025 2:10 am That's looking pretty good.

I've been following the pertinent thread
over at Atari-Forum as well.

Thanks for the work on this.

No problem. Glad you like it.

However, its probably going to be a bit of a wait for the next post, as we will need to see when more tech info for the GFX HW materialises, as well as the fact that I need to learn some Occam *and* design some sort of subsystem to use it.