Search found 119 matches

by Stefan123
Tue Sep 19, 2017 7:32 pm
Forum: Compilers (Boriel, Z88dk etc)
Topic: C API and graphics library for Next layer 2 screen
Replies: 16
Views: 6619

Re: C API and graphics library for Next layer 2 screen

Update The C layer 2 graphics library has been updated with support for and documentation on the layer 2 shadow screen. The new way of setting layer priorities and the global transparency colour is also supported. I have also added several examples on using the layer 2 shadow screen and double buff...
by Stefan123
Thu Sep 14, 2017 10:00 pm
Forum: General
Topic: Layer2 back buffer
Replies: 15
Views: 4319

Re: Layer2 back buffer

Yes, I saw your Dungeon Master demo on Facebook. It's looks promising :) I look forward to see reports of your progress.
by Stefan123
Wed Sep 13, 2017 6:28 pm
Forum: General
Topic: Layer2 back buffer
Replies: 15
Views: 4319

Re: Layer2 back buffer

Gerhard, what are you developing? A game, demo, utility library or just experimenting and having fun with the new cool Next features? I think we will see a lot of impressive layer 2 based demos and games in the coming months.
by Stefan123
Wed Sep 13, 2017 4:09 pm
Forum: General
Topic: Layer2 back buffer
Replies: 15
Views: 4319

Re: Layer2 back buffer

I haven't got the flipping between the layer 2 front and back buffers to work in ZEsarUX (2017-09-08 snapshot). There could be something wrong with my code but it works fine in CSpect so I suspect that ZEsarUX doesn't behave in the same way as CSpect when it comes to the layer 2 front/back buffer fl...
by Stefan123
Wed Sep 13, 2017 4:01 pm
Forum: General
Topic: Layer2 back buffer
Replies: 15
Views: 4319

Re: Layer2 back buffer

Note that both the front buffer and back buffer can be paged in to $C000-$FFFF in the normal way. One reason for doing this is that then you can also read the screen memory, not only write to it. When the front buffer (by default RAM banks 8, 9 and 10) is paged in to $C000-$FFFF, any writes to it ar...
by Stefan123
Wed Sep 13, 2017 3:50 pm
Forum: General
Topic: Layer2 back buffer
Replies: 15
Views: 4319

Re: Layer2 back buffer

I have also been experimenting with the layer 2 front/back buffer functionality lately and I talked to Mike Dailly yesterday to confirm that I had understood how it is supposed to work correctly. If bit 3 in port $123B is 0 , the specified section (bits 6-7) of the front buffer is paged in to $0-$3F...
by Stefan123
Sun Sep 10, 2017 7:55 pm
Forum: General
Topic: Question about ULANext and colour selection
Replies: 3
Views: 1280

Re: Question about ULANext and colour selection

Now I get it. Alvin, you're an invaluable source of information. They should make a clone of you and put in the Next documentation team ;)
by Stefan123
Fri Sep 08, 2017 1:08 pm
Forum: General
Topic: Generation spritesheets
Replies: 7
Views: 2131

Re: Generation spritesheets

Looking good! Are you the same guy that posted a nice undulating road demo on Facebook? Dare we hope for a fast and furious car racing game then? ;)
by Stefan123
Fri Sep 08, 2017 1:00 pm
Forum: General
Topic: Question about ULANext and colour selection
Replies: 3
Views: 1280

Question about ULANext and colour selection

I don't understand how to set the ULA attribute bytes when I want to use the extended colours provided by ULANext. As I understand it, the extended ULA colours are enabled by setting bit 0 in the palette control register (#67). Then, by default, the palette entries 0-15 are used for ink colours and ...
by Stefan123
Fri Sep 08, 2017 12:58 pm
Forum: General
Topic: Z88DK C API sprite animation
Replies: 3
Views: 1447

Re: Z88DK C API sprite animation

Yes, that's the approach I would use, i.e. having each animation frame as a separate pattern and changing the pattern for your sprite in the vertical blanking interval.