emkay Posted December 27, 2002 Share Posted December 27, 2002 In 1990 I finished a Game named ADMIRANDUS. Because there is no EMULATOR that shows the game correct, I made a screenshot with my Pc-Capture Card. It IS from my 800XL, but what is going to be wrong on the screen ? Quote Link to comment Share on other sites More sharing options...
TXG/MNX Posted December 27, 2002 Share Posted December 27, 2002 Nice graphics especialy the small picture. What do you have to do in the game? TXG/MNX Quote Link to comment Share on other sites More sharing options...
Sheddy Posted December 27, 2002 Share Posted December 27, 2002 Yep, very nice Here's my guess.. I'd say that top 1/3 although it looks complex is mostly just PM overlays and DLIS, and will display OK But I guess the bottom 1/3 is going to look wrong coz the emulators don't do horizonal timing right yet. Either you're switching from gr.8 (or 0) to gr.15 horizontally or you're multiplexing the PM's horizontally. Quote Link to comment Share on other sites More sharing options...
DEBRO Posted December 27, 2002 Share Posted December 27, 2002 But I guess the bottom 1/3 is going to look wrong coz the emulators don't do horizonal timing right yet. Either you're switching from gr.8 (or 0) to gr.15 horizontally or you're multiplexing the PM's horizontally. I'd be interested to know too. I tried a trick like that but couldn't get it to work on the emulator. I never tried it on the real 8-bit. I was told that 2 graphic modes on one scan line might be impossible because ANTIC reads the display list for the scan line and doesn't re-read it for the graphic mode update. I wanted to try it though versus taking what was written Quote Link to comment Share on other sites More sharing options...
Heaven/TQA Posted December 27, 2002 Share Posted December 27, 2002 try the following... use ANTIC F (gr.... 1/3 of scanline do not change anything, then switch the PRIOR register ($40) and go into mode9 after another 1/3 switch back to antic f ($00) and antic should produce something similar to antic e... this was told me (i never tried it...) by coders. you can see this effect in HARD demos like "Joyride". my 2 cents regarding atari "hardware" bugs... hve Quote Link to comment Share on other sites More sharing options...
Jetboot Jack Posted December 27, 2002 Share Posted December 27, 2002 Debro, You're right you cannot change graphics mode mid scanline - I've never seen it done... But as Hve says you can flip the GTIA mode bits midline to switch between Antic F and and any GTIA (9, 10 and 11 in basic modes) effects - since they are the same graphic mode as far as Antic knows You could also do the same trick with GRIOR and Antic 2 to flip between normal text and wierd GTIA mode text (Murder on the Zinderneuf by EA was done in these modes)... sTeVE Quote Link to comment Share on other sites More sharing options...
emkay Posted December 28, 2002 Author Share Posted December 28, 2002 High HVE! >use ANTIC F (gr.... 1/3 of scanline do not change anything, then switch the PRIOR register ($40) and go into mode9 after another 1/3 switch back to antic f ($00) and antic should produce something similar to antic e... Yes, You are right. >this was told me (i never tried it...) by coders. you can see this effect in HARD demos like "Joyride". But, I did it before >my 2 cents regarding atari "hardware" bugs... If it is for real a bug or not, that would be unkown. But, did you ever seen it on a GAME? Hard-Software did great things, but did they great things for the ATARI? I wanted to do great things for that great machine! For those who want to know: The Game is a type of "Wheel of fortune". But, there is more...look at it. Quote Link to comment Share on other sites More sharing options...
emkay Posted December 28, 2002 Author Share Posted December 28, 2002 BTW: What you can't see, is the Sound of the Game that is using a 2-point modulation, that is far beyond a SID on C64 and uses only a VBI-routine. Believe it or not Quote Link to comment Share on other sites More sharing options...
Sheddy Posted December 28, 2002 Share Posted December 28, 2002 Not sure what you mean by 2 point modulation, but I think I'm not the only one who would like to see this game! How about posting a .bin of it? Quote Link to comment Share on other sites More sharing options...
emkay Posted December 28, 2002 Author Share Posted December 28, 2002 @Sheddy May I send it as an ATR in an E-Mail? Remember an ATARI-Emulator doesn't show the correct graphics and the sound is not correct played too... Hmmm.... maybe on a 60Hz ATARI, the graphics might be wrong too, and due to the VBI, the sound may be faster. Quote Link to comment Share on other sites More sharing options...
Sheddy Posted December 28, 2002 Share Posted December 28, 2002 cghutt@hotmail.com thanks Quote Link to comment Share on other sites More sharing options...
emkay Posted December 28, 2002 Author Share Posted December 28, 2002 So if you put that game on an original machine and while in the game, just wait a few minutes for the pause-mode Quote Link to comment Share on other sites More sharing options...
emkay Posted December 30, 2002 Author Share Posted December 30, 2002 Does anyone know, how many Steps of the 6502 are made in one Scanline? At 50Hz and at 60Hz? So think about it, when using WSYNC with only a change of a Color... Till the end of the Scanline, the whole Computer does nothing! So don't be surprised, getting crackles in Digi-Sounds... So, make a Routine, that playes the Digi-Sound, while using/in a DLI and forget WSYNC Quote Link to comment Share on other sites More sharing options...
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