PacManPlus Posted February 18, 2021 Author Share Posted February 18, 2021 Yes, that was a mistake on my part. I've fixed a lot of things since that build. I've shifted gears, though. I'm currently reading through the arcade commented disassembly (and somewhat learning Z80 in the process) and translating it to the 7800 version. So (hopefully) if things work we should have a VERY arcade accurate port. I'll revisit the audio once I have the enemy stuff done. @-^CrossBow^- - BTW, you were exactly correct on the reason for the 'black bars' that periodically show up on the attacking aliens. Sprite overlap. It's only when they are on the same zone as the 'flock', and usually when there is more than one dive bombing. 6 1 Quote Link to comment Share on other sites More sharing options...
+ZeroPage Homebrew Posted February 18, 2021 Share Posted February 18, 2021 (edited) YouTube archive of stream, can't edit above post. (SET VIDEO TO 1080P60 FOR FULL QUALITY) Edited February 18, 2021 by ZeroPage Homebrew 4 Quote Link to comment Share on other sites More sharing options...
PacManPlus Posted February 23, 2021 Author Share Posted February 23, 2021 Just wanted to show a small update while I'm still working on the Z80 -> 6502 conversion (which, if it works, I will be amazed). ? New title screen: 23 1 Quote Link to comment Share on other sites More sharing options...
PacManPlus Posted February 25, 2021 Author Share Posted February 25, 2021 (edited) Ok, doing a 180° turn here... I've decided to go back to my source code before I started rewriting it from the arcade z80 code. I was finding more and more subroutines that I have to convert (I just wanted the enemy movement). I figured the chance of it running after re-vamping almost the entire program from what I *believe* the conversion from z80 would be slim to none... and me being able to figure out what's wrong if it just crashes would also be slim to none. I think I've read enough to know the jist of what they were doing, so I may still be ahead of the game. Edited February 25, 2021 by PacManPlus 8 Quote Link to comment Share on other sites More sharing options...
+MrZarniwoop Posted February 26, 2021 Share Posted February 26, 2021 4 hours ago, PacManPlus said: I've decided to go back to my source code before I started rewriting it from the arcade z80 code #wisdom The top issue in development is that people undervalue developed, working, code because they can imagine the clean green-field answer to specific issues. 1 Quote Link to comment Share on other sites More sharing options...
+MattelAquarius Posted February 26, 2021 Share Posted February 26, 2021 Just now, I thanked UniWarS for this. 1 4 Quote Link to comment Share on other sites More sharing options...
Hydro Thunder Posted February 26, 2021 Share Posted February 26, 2021 2 hours ago, MattelAquarius said: Just now, I thanked UniWarS for this. Ditto! I've always, always loved Galaxian, even more than Galaga for some reason. And now I get to have such a terrific version on the 7800...plus the discovery (to me) of the ridiculously fun UniWarS. Win win win win win! 3 Quote Link to comment Share on other sites More sharing options...
+Karl G Posted February 26, 2021 Share Posted February 26, 2021 16 hours ago, MrZarniwoop said: #wisdom The top issue in development is that people undervalue developed, working, code because they can imagine the clean green-field answer to specific issues. I think it's an equally common mistake for developers to cling to old code when a clean rewrite may be the best solution. It all depends on the situation. 2 Quote Link to comment Share on other sites More sharing options...
PacManPlus Posted March 4, 2021 Author Share Posted March 4, 2021 ? 2 Quote Link to comment Share on other sites More sharing options...
Trebor Posted March 4, 2021 Share Posted March 4, 2021 Don't let it frustrate you (too much), Bob. Remember, there are no deadlines and no expectations. If you need to take a break from this port, absolutely please do so. Galaxians can wait - fighter pilots needed in sector wars are always in demand to tide us over. In between that, we can always tackle the other space invaders, while you take a mental break from the programming. 5 Quote Link to comment Share on other sites More sharing options...
+sramirez2008 Posted March 4, 2021 Share Posted March 4, 2021 26 minutes ago, Trebor said: fighter pilots needed in sector wars Lol! I just played a couple games. Please keep first things, first Bob. 2 Quote Link to comment Share on other sites More sharing options...
Shannon Posted March 7, 2021 Share Posted March 7, 2021 (edited) Just a couple of quick questions and comments about the last release. I'm currently trying this in retroarch which means emu7800 only ATM. It says pokey not detected. Is it worth trying to enable pokey for emu7800? From what I've been reading the techniques used for pokey sound don't sound right in emulation? In regards to TIA sounds. I assume the current sounds are placeholders? As far as the games go the left/right movement of diving alians seems a little slow? For a first round so far it looks good! Later Edit: Just tried the arcade version in MAME. The speed actually seems ok. I think what is happening here is the arcade is taller vertically so the player has more time to move his ship into position to hit the aliens and get out of the way of the aliens shot. With the vertical reduced this advantage is lost. Edited March 7, 2021 by Shannon Quote Link to comment Share on other sites More sharing options...
CPUWIZ Posted March 7, 2021 Share Posted March 7, 2021 On 3/4/2021 at 3:25 PM, Trebor said: no expectations Quote Link to comment Share on other sites More sharing options...
Synthpopalooza Posted March 7, 2021 Share Posted March 7, 2021 No idea about EMU7800, but the POKEY won't sound right, likely, unless you are using Prosystem/J7800 ... AFAIK, they are the only ones that play well with that $Cx distortion in 1.79 mhz mode. Quote Link to comment Share on other sites More sharing options...
PacManPlus Posted March 15, 2021 Author Share Posted March 15, 2021 (edited) Converting the Z80 to 6502 for enemy timing and attack arcs: It slowly coming along. Although I am having issues with slowdown now. @Shannon - I'm not done working on the Pokey sounds. Regarding TIA, if that actually is the active sound driver you are hearing, are not place holders. Those are the TIA sounds; I think I got pretty close with those. Edited March 15, 2021 by PacManPlus 16 1 Quote Link to comment Share on other sites More sharing options...
gambler172 Posted March 15, 2021 Share Posted March 15, 2021 2 hours ago, PacManPlus said: Converting the Z80 to 6502 for enemy timing and attack arcs: It slowly coming along. Although I am having issues with slowdown now. @Shannon - I'm not done working on the Pokey sounds. Regarding TIA, if that actually is the active sound driver you are hearing, are not place holders. Those are the TIA sounds; I think I got pretty close with those. Hi Bob If this is TIS,it is damn good.. sounds like the Arcade.. i see no need to do Pokey. Greetings Walter 3 Quote Link to comment Share on other sites More sharing options...
+MrZarniwoop Posted March 16, 2021 Share Posted March 16, 2021 11 hours ago, PacManPlus said: Converting the Z80 to 6502 for enemy timing and attack arcs 5 1 Quote Link to comment Share on other sites More sharing options...
PacManPlus Posted March 16, 2021 Author Share Posted March 16, 2021 Thank you. BTW, just to be clear, the sounds in the video I posted yesterday are TIA. 2 Quote Link to comment Share on other sites More sharing options...
mmervine Posted March 16, 2021 Share Posted March 16, 2021 1 hour ago, PacManPlus said: Thank you. BTW, just to be clear, the sounds in the video I posted yesterday are TIA. Bob-watched the video...your TIA sounds are awesome! 3 1 Quote Link to comment Share on other sites More sharing options...
Shannon Posted March 17, 2021 Share Posted March 17, 2021 On 3/15/2021 at 12:11 PM, PacManPlus said: @Shannon - I'm not done working on the Pokey sounds. Regarding TIA, if that actually is the active sound driver you are hearing, are not place holders. Those are the TIA sounds; I think I got pretty close with those. Oh ok thanks. I just assumed those were the sounds from the uniwars this game came from and had not been worked on yet. 1 Quote Link to comment Share on other sites More sharing options...
PacManPlus Posted March 25, 2021 Author Share Posted March 25, 2021 Hi guys: Ok, bad news: The '2 player simultaneous' selection has to go. I am at the max cycles, and even using a 7800heat utility (made by @RevEng) I can't seem to reduce the number of cycles needed per frame. Something has to go, so the extra code that handles 2 player simultaneous selection is on the chopping block. I understand that there may be some bloat due to this being my first time converting Z80 to 6502, but I cant help that. 4 Quote Link to comment Share on other sites More sharing options...
Trebor Posted March 25, 2021 Share Posted March 25, 2021 33 minutes ago, PacManPlus said: Hi guys: Ok, bad news: The '2 player simultaneous' selection has to go. I am at the max cycles, and even using a 7800heat utility (made by @RevEng) I can't seem to reduce the number of cycles needed per frame. Something has to go, so the extra code that handles 2 player simultaneous selection is on the chopping block. I understand that there may be some bloat due to this being my first time converting Z80 to 6502, but I cant help that. No need for apologies, Bob. If the biggest lost here is a 2 player simultaneous mode, for what is shaping up to be a most outstanding port of Galaxian, the sacrifice is well worth the reward. 6 1 Quote Link to comment Share on other sites More sharing options...
+x=usr(1536) Posted March 25, 2021 Share Posted March 25, 2021 43 minutes ago, Trebor said: No need for apologies, Bob. If the biggest lost here is a 2 player simultaneous mode, for what is shaping up to be a most outstanding port of Galaxian, the sacrifice is well worth the reward. This might even be the port of Galaxian. It really is that good. Simultaneous play would be neat, but it's not a must-have by any means. The end result is still going to be exceptionally good. 3 1 Quote Link to comment Share on other sites More sharing options...
+wavemotion Posted March 26, 2021 Share Posted March 26, 2021 No worries on Simu-Play - given that I have no friends, I'm in favor of it being jettisoned in favor of such a solid port! 3 Quote Link to comment Share on other sites More sharing options...
John Stamos Mullet Posted March 26, 2021 Share Posted March 26, 2021 Feature Creep should always lose out to Arcade Accuracy in my opinion. 4 Quote Link to comment Share on other sites More sharing options...
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