Eagle Posted January 17, 2021 Share Posted January 17, 2021 (edited) First one. Full screen (160*192) scroll in 160B in charmode (2chars) Graphics from Mayhem in Monsterland (C64) I'm using only 7 colours so far. edit: Linkt to JS7800 https://raz0red.github.io/js7800/?cart=https://atariage.com/forums/applications/core/interface/file/attachment.php?id=802867 Scroll.a78 Edited January 18, 2021 by Eagle 15 2 1 Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/ Share on other sites More sharing options...
gambler172 Posted January 18, 2021 Share Posted January 18, 2021 Could become Sonic? Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4728788 Share on other sites More sharing options...
SlidellMan Posted January 18, 2021 Share Posted January 18, 2021 That looks really slick, @Eagle. Maybe something like that routine could be used for a horizontal space shooter? Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4728800 Share on other sites More sharing options...
+Karl G Posted January 18, 2021 Share Posted January 18, 2021 Looks great! Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4728833 Share on other sites More sharing options...
vhzc Posted January 18, 2021 Share Posted January 18, 2021 Really cool! Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4728835 Share on other sites More sharing options...
TrekMD Posted January 18, 2021 Share Posted January 18, 2021 Oh, I like what I'm seeing... Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4728839 Share on other sites More sharing options...
+ZeroPage Homebrew Posted January 18, 2021 Share Posted January 18, 2021 Wow, love it! This could be used for all kinds of different styles of games. - James Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4728870 Share on other sites More sharing options...
Cyprian Posted January 19, 2021 Share Posted January 19, 2021 looks cool Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4729249 Share on other sites More sharing options...
+x=usr(1536) Posted January 19, 2021 Share Posted January 19, 2021 Ooooh... Very nice Mayhem in Monsterland is one of the games I always wished had been ported to the A8. Wouldn't be anything wrong with a 7800 version, though! 3 Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4729256 Share on other sites More sharing options...
+Muddyfunster Posted January 19, 2021 Share Posted January 19, 2021 Very nice! I got some odd flicker in the top right corner when running on my PAL 7800 via Dragonfly, was intermittent. Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4729272 Share on other sites More sharing options...
Eagle Posted January 31, 2021 Author Share Posted January 31, 2021 Just test. I'm completely not happy about colour palette ;( No vertical scrolling..... yet? ? https://raz0red.github.io/js7800/?cart=https://atariage.com/forums/applications/core/interface/file/attachment.php?id=807037 MultiRPG.a78 5 Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4740399 Share on other sites More sharing options...
Eagle Posted January 31, 2021 Author Share Posted January 31, 2021 I never seen before on A7800 Real dual layer Parallax full screen 160x192 in 160B mode (13 colours) Glitching little bit one font, will have to redraw the background layer. Also I will put some colours change on DLI and maybe few different speeds for the background layer. I hope you will enjoy. https://raz0red.github.io/js7800/?cart=https://atariage.com/forums/applications/core/interface/file/attachment.php?id=807395 Parallax.a78 9 Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4741229 Share on other sites More sharing options...
SlidellMan Posted February 1, 2021 Share Posted February 1, 2021 That is quite impressive, Eagle! As said before, I look forward to an actual game from you. Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4741320 Share on other sites More sharing options...
Eagle Posted February 13, 2021 Author Share Posted February 13, 2021 I would like to present my new idea for A7800 - new graphics mode - Multicolor 160B+ Orginal picture - One Zak and his Kracken by Carrion (commodore plus 4) 89 colors used https://tomseditor.com/gallery/i/33074/one-zak-and-his-kracken-by-carrion Converted for A7800 has 55 colors I'm still working on glitches and color palette ? I hope I'll finish in next few weeks https://raz0red.github.io/js7800/?cart=https://atariage.com/forums/applications/core/interface/file/attachment.php?id=811209 Multicolor160Bplus.a78 16 Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4752549 Share on other sites More sharing options...
Cyprian Posted February 14, 2021 Share Posted February 14, 2021 dobre to jest! looks cool, how did you reach 55 colors?? Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4753128 Share on other sites More sharing options...
Eagle Posted February 14, 2021 Author Share Posted February 14, 2021 1 hour ago, Cyprian said: how did you reach 55 colors?? 1500 bytes DLI Spoiler lda #$F6 sta P2C1 lda #$04 sta P2C2 lda #$21 sta P2C3 lda #$03 sta P3C1 sta WSYNC lda #$24 sta P0C2 lda #$3D sta P2C2 lda #$03 sta P3C2 sta WSYNC lda #$05 sta P3C1 lda #$3E sta P3C3 sta WSYNC lda #$E2 sta P3C3 sta WSYNC lda #$c6 sta P1C3 lda #$3E sta P3C1 sta WSYNC lda #$05 sta P3C3 sta WSYNC lda #$59 sta P3C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$5A sta P1C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$c6 sta P0C2 sta WSYNC lda #$24 sta P3C1 sta WSYNC lda #$07 sta P0C2 lda #$26 sta P0C3 lda #$AB sta P1C3 lda #$40 sta P2C1 sta WSYNC lda #$c6 sta P1C3 sta WSYNC lda #$F5 sta P0C2 lda #$4B sta P0C3 sta WSYNC lda #$62 sta P1C3 sta WSYNC lda #$c6 sta P1C3 sta WSYNC lda #$62 sta P1C3 lda #$C4 sta P2C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$51 sta P2C1 sta WSYNC lda #$13 sta P0C3 sta WSYNC lda #$04 sta P0C2 sta WSYNC lda #$5A sta P0C2 sta WSYNC lda #$0E sta P3C3 sta WSYNC lda #$05 sta P2C1 sta WSYNC lda #$26 sta P1C3 lda #$3D sta P3C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$04 sta P2C1 sta WSYNC lda #$51 sta P2C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$c6 sta P2C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$04 sta P2C2 lda #$59 sta P3C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$F5 sta P1C3 lda #$5B sta P3C3 sta WSYNC lda #$5E sta P3C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$40 sta P0C2 sta WSYNC lda #$03 sta P3C3 sta WSYNC lda #$F1 sta P2C3 lda #$26 sta P3C1 sta WSYNC lda #$E2 sta P0C3 lda #$24 sta P3C1 sta WSYNC lda #$F6 sta P1C3 sta WSYNC lda #$05 sta P2C2 sta WSYNC lda #$5E sta P3C1 sta WSYNC lda #$c6 sta P1C3 sta WSYNC lda #$E3 sta P1C3 sta WSYNC lda #$15 sta P1C3 sta WSYNC lda #$3E sta P3C1 sta WSYNC lda #$50 sta P1C3 sta WSYNC lda #$c6 sta P2C2 lda #$04 sta P3C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$24 sta P2C2 lda #$4B sta P3C1 sta WSYNC lda #$5E sta P2C1 lda #$c6 sta P3C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$4B sta P2C2 sta WSYNC lda #$21 sta P1C3 lda #$26 sta P2C1 lda #$50 sta P2C3 lda #$24 sta P3C1 sta WSYNC lda #$E3 sta P2C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$51 sta P2C2 lda #$04 sta P2C3 sta WSYNC lda #$C4 sta P2C3 sta WSYNC lda #$50 sta P2C2 sta WSYNC lda #$B1 sta P2C2 lda #$B6 sta P2C3 sta WSYNC lda #$B4 sta P2C3 sta WSYNC lda #$98 sta P2C1 sta WSYNC lda #$B6 sta P2C2 lda #$B1 sta P2C3 lda #$AB sta P3C1 sta WSYNC lda #$F1 sta P1C3 lda #$B2 sta P2C2 sta WSYNC lda #$B4 sta P2C2 lda #$B6 sta P2C3 sta WSYNC lda #$B2 sta P1C1 lda #$24 sta P2C2 lda #$26 sta P3C1 sta WSYNC lda #$62 sta P1C2 sta WSYNC lda #$53 sta P1C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$5E sta P3C1 sta WSYNC lda #$26 sta P3C1 sta WSYNC lda #$26 sta P2C3 lda #$B4 sta P3C1 sta WSYNC lda #$62 sta P2C1 sta WSYNC lda #$4B sta P2C3 lda #$23 sta P3C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$E3 sta P2C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$03 sta P0C1 lda #$07 sta P2C1 lda #$05 sta P3C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$22 sta P2C3 sta WSYNC lda #$51 sta P0C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$B6 sta P2C1 sta WSYNC lda #$B1 sta P1C2 sta WSYNC lda #$03 sta P2C1 lda #$E1 sta P3C3 sta WSYNC lda #$B6 sta P2C1 lda #$04 sta P2C2 sta WSYNC lda #$53 sta P0C1 lda #$03 sta P2C2 sta WSYNC lda #$24 sta P0C1 lda #$E3 sta P2C1 lda #$51 sta P2C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$c6 sta P2C2 lda #$15 sta P3C1 sta WSYNC lda #$A2 sta P3C1 sta WSYNC lda #$15 sta P1C3 lda #$51 sta P3C1 sta WSYNC lda #$59 sta P0C1 lda #$53 sta P2C1 sta WSYNC lda #$E3 sta P3C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$23 sta P2C2 lda #$B4 sta P2C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$24 sta P1C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$c6 sta P1C3 lda #$15 sta P2C3 sta WSYNC lda #$21 sta P0C1 lda #$B4 sta P1C3 sta WSYNC lda #$53 sta P1C3 lda #$59 sta P2C1 sta WSYNC lda #$B4 sta P0C1 lda #$c6 sta P2C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$C4 sta P0C1 lda #$CC sta P2C1 sta WSYNC lda #$52 sta P1C1 sta WSYNC lda #$59 sta P1C3 lda #$53 sta P2C2 sta WSYNC lda #$CC sta P0C2 lda #$F1 sta P2C1 sta WSYNC lda #$52 sta P0C1 lda #$22 sta P0C2 lda #$B4 sta P1C1 sta WSYNC lda #$CC sta P0C1 lda #$E1 sta P0C2 lda #$23 sta P3C3 sta WSYNC lda #$24 sta P0C2 lda #$E1 sta P2C3 sta WSYNC lda #$22 sta P1C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$15 sta P0C1 lda #$E4 sta P1C3 sta WSYNC lda #$26 sta P1C3 lda #$B1 sta P2C3 sta WSYNC lda #$52 sta P2C2 lda #$E4 sta P2C3 sta WSYNC lda #$03 sta P1C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$53 sta P2C2 sta WSYNC lda #$c6 sta P0C1 sta WSYNC lda #$C4 sta P1C2 sta WSYNC lda #$22 sta P1C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$09 sta P1C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$22 sta P1C2 lda #$4B sta P1C3 sta WSYNC lda #$15 sta P1C1 lda #$05 sta P1C2 sta WSYNC lda #$09 sta P1C1 lda #$26 sta P2C3 sta WSYNC lda #$E4 sta P1C1 sta WSYNC lda #$22 sta P1C2 sta WSYNC lda #$E1 sta P2C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$C4 sta P1C2 sta WSYNC lda #$22 sta P1C3 lda #$F5 sta P2C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$E1 sta P1C2 sta WSYNC lda #$12 sta P1C2 sta WSYNC lda #$21 sta P2C2 lda #$50 sta P2C3 sta WSYNC lda #$F5 sta P2C2 lda #$C4 sta P3C1 sta WSYNC lda #$CC sta P0C2 lda #$13 sta P2C2 lda #$AB sta P2C3 sta WSYNC lda #$24 sta P1C2 lda #$23 sta P2C3 lda #$26 sta P3C3 sta WSYNC lda #$F5 sta P3C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$07 sta P0C2 sta WSYNC lda #$26 sta P0C1 lda #$AB sta P1C2 lda #$12 sta P2C2 sta WSYNC lda #$24 sta P1C3 lda #$F2 sta P2C2 sta WSYNC lda #$B4 sta P0C1 lda #$22 sta P0C2 lda #$13 sta P1C2 lda #$98 sta P1C3 lda #$21 sta P3C3 sta WSYNC lda #$12 sta P0C3 lda #$E1 sta P3C3 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$15 sta P2C2 sta WSYNC lda #$E2 sta P1C3 lda #$F2 sta P3C1 sta WSYNC lda #$C1 sta P0C1 lda #$c6 sta P2C3 lda #$DC sta P3C1 sta WSYNC lda #$DE sta P0C1 lda #$B2 sta P1C3 sta WSYNC lda #$B4 sta P0C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$17 sta P3C1 sta WSYNC lda #$AB sta P0C2 lda #$B1 sta P1C2 lda #$DC sta P3C1 sta WSYNC lda #$E4 sta P0C3 lda #$E2 sta P1C1 sta WSYNC lda #$DE sta P0C3 lda #$AE sta P2C1 sta WSYNC lda #$CC sta P0C3 lda #$16 sta P2C1 sta WSYNC lda #$AE sta P1C2 lda #$E4 sta P2C1 lda #$B6 sta P3C1 sta WSYNC lda #$E2 sta P1C2 sta WSYNC lda #$AE sta P1C1 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$B1 sta P2C1 sta WSYNC lda #$E4 sta P1C2 lda #$E1 sta P2C2 sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$00 sta BACKGRND sta WSYNC lda #$E1 sta P1C2 sta WSYNC lda #$E1 sta P0C3 sta WSYNC Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4753186 Share on other sites More sharing options...
SlidellMan Posted February 14, 2021 Share Posted February 14, 2021 That's pretty clever, @Eagle. I bet that routine you wrote would be perfect for title screens. Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4753306 Share on other sites More sharing options...
Cyprian Posted February 14, 2021 Share Posted February 14, 2021 @Eagle cool, what tool did you use? Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4753479 Share on other sites More sharing options...
Synthpopalooza Posted February 15, 2021 Share Posted February 15, 2021 Was this done with Graph2Font or something else? Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4753839 Share on other sites More sharing options...
Eagle Posted February 15, 2021 Author Share Posted February 15, 2021 @Synthpopalooza something else @Cyprian crossplatform tool (base on pchg) I'm still working on timings and colors. Also I'm using my scripts (data,dli,palets) @SlidellMan yes only static screens (16kb) My another test LSD Lizards by Jok - Amiga 32 colors https://tomseditor.com/gallery/i/31046/madesolskogen-aka-lsd-lizards-by-jok&lang=en https://raz0red.github.io/js7800/?cart=https://atariage.com/forums/applications/core/interface/file/attachment.php?id=811848 I'm getting better In this mode I can use all 256 colors on screen Biggest problem I have so far is A7800 palette ? There is too many of them ;( I just need ONE. Enjoy LSDLizard.a78 8 Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4754265 Share on other sites More sharing options...
Synthpopalooza Posted February 15, 2021 Share Posted February 15, 2021 You should also try 320B. I did some experiments with interlacing that get about 70 colors in 160A, about 100 in 160B, and 20 in 320B. Its done by swapping charsets. Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4754342 Share on other sites More sharing options...
Cyprian Posted February 16, 2021 Share Posted February 16, 2021 @Eagle own tool? cool. Is it something like that for the ST: http://tool.anides.de/ ? how many color changes per line you can do in that picture? 2? Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4754950 Share on other sites More sharing options...
Eagle Posted February 16, 2021 Author Share Posted February 16, 2021 @Cyprian not my tool. I know that one for ST. I'll send you PM I can change up to 6 colors per line. LSD Lizards are up to 3 colors per scanline. But I'll probably stay with 3 colors max and change my DLI script to generate something like this: ldx #$23 ldy #$45 lda #$67 sta WSYNC stx P0C1 sty P0C2 sta P0c3 @Synthpopalooza I will try with 320B next. But I'm not going to experiment with interlacing. 1 Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4755036 Share on other sites More sharing options...
Synthpopalooza Posted February 17, 2021 Share Posted February 17, 2021 When you do 320B ... It works like Antic 4 on the XL/XE but with one caveat: 00 and 01 can't occupy the same nybble. It will result in both pixels being blank. There is a way to defeat this, by engaging what is called Kangaroo mode, by turning off transparency. The tradeoff for this is, 00 on your sprites will return the BG color, and not transparency. Also you get two palettes available instead of just one. Not usually used in game because of high DMA/MARIA costs, but can be used for static pictures/title screens. Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4755642 Share on other sites More sharing options...
Synthpopalooza Posted February 17, 2021 Share Posted February 17, 2021 The other modes (apart from the 4 color 160A and two color 320A) 320C ... is a 320 pixel mode, but has the limitation that every nybble must take its color from the same Px palette number. 320D ... is a weird one. Even columns are taken from one palette and odd columns from another. I did try an interlace experiment once where you swap character sets and also color palettes, to get a 320 pixel vertical line interlace, but it didn't look very well. So 320D is, at least to me, not of much use. DMA costs: 160A/320A has lower DMA overhead than 160B/320B. 320C DMA overhead matches to 320B, and 320D DMA overhead matches to 320A. This should be kept in mind when using these modes for actual in-game graphics. Quote Link to comment https://forums.atariage.com/topic/315966-my-experiments-with-atari-7800/#findComment-4755652 Share on other sites More sharing options...
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