+Stephen Posted October 20, 2004 Share Posted October 20, 2004 Looks awesome - hope it comes out on cartridge so I can try it (no CC2 for me). Stephen Anderson Quote Link to comment Share on other sites More sharing options...
Shannon Posted October 20, 2004 Share Posted October 20, 2004 Wowzers... Quote Link to comment Share on other sites More sharing options...
Goochman Posted October 20, 2004 Share Posted October 20, 2004 Kenfused - whats up - its not April That looks great! Wish the 5200 version could produce that crisp a color Quote Link to comment Share on other sites More sharing options...
bjk7382 Posted October 20, 2004 Share Posted October 20, 2004 This looks very nice so far. It seems on this demo that the sprites slow down when there are a lot on the screen, and they move quite nice when there are only a couple, I hope that gets worked out when they actually start moving on the platforms. I also know this is very early in the stages of development, so it is looking stellar so far Quote Link to comment Share on other sites More sharing options...
Ferris Posted October 20, 2004 Share Posted October 20, 2004 I have to ask though, how has your experience been with converting from 5200 to 7800? Has it been difficult for you or is it pretty much just following standard procedure and working out the bugs that pop up along the way? Quote Link to comment Share on other sites More sharing options...
+-^CrossBow^- Posted October 20, 2004 Share Posted October 20, 2004 Hmm..running the sprite demo (Which is really what this is..a display and sprite demo...so far.), The sprites move very well on my system. If your doing this in emulation, then it could be your system is slowing down with all the stuff on the screen. Still, I think I have managed to count about 7 or 8 sprites on the screen at once. That is still more than what I think every appears on the 5200 version. So more likely than not it just needs to be optimized somewhat. And the actual game wouldn't really have all that many sprites moving about anyway. But, then again, they would have some A.I. applied to them in the game which might slow things down. Still look at Robotron, Galaga, Food Fight. They all use tons of sprites on the screen at once and never does the 7800 slowdown. Galaga is a glitch..not a problem with the hardware. And even then it just suddenly goes insanely fast after wave 10. It doesn't slow down... Quote Link to comment Share on other sites More sharing options...
bjk7382 Posted October 20, 2004 Share Posted October 20, 2004 If your doing this in emulation, then it could be your system is slowing down with all the stuff on the screen. Still, I think I have managed to count about 7 or 8 sprites on the screen at once. I am running it on the CC2, and it seems the sprites move kind of choppy when there are 6 or 7, but when it goes down to 2 they move more smooth/quicker. Quote Link to comment Share on other sites More sharing options...
Brad2600 Posted October 20, 2004 Share Posted October 20, 2004 Certainly looks nice so far. Would be nice to buy a 7800 homebrew at last! Quote Link to comment Share on other sites More sharing options...
Mayhem Posted October 20, 2004 Share Posted October 20, 2004 Just cos I was curious to see how it would work on a PAL 7800... http://62.168.142.47/~mayhem/images/beefdrop.jpg Garbage at the bottom (due to PAL's extra lines) but the display is pretty much there, just need to adjust colours. I'd love a PAL version hint hint So if you're up for doing it for both systems, I'll be the volunteer PAL tester Quote Link to comment Share on other sites More sharing options...
Mayhem Posted October 20, 2004 Share Posted October 20, 2004 Oh it looks a little stretched cos I have a widescreen TV and didn't change the picture size to 4:3 Quote Link to comment Share on other sites More sharing options...
kenfused Posted October 20, 2004 Author Share Posted October 20, 2004 I reorded a couple of things. Doubt if it will have any effect but it is worth a shot. Wow, this looks promising Was the opposite DLI the problem? I was actually enabling screen DMA before setting the display list list pointers so who knows what effects that could have had. Quote Link to comment Share on other sites More sharing options...
Bruce Tomlin Posted October 21, 2004 Share Posted October 21, 2004 I finally got around to loading it, and it looks pretty nice. It does slow down noticably when there are more sprites on the screen, though. From 4fps down to about 2.5fps. Are you rebuilding the display list every time through? I've tried that before, and the DMA just sucks too many CPU cycles to do that kind of stuff. It's okay when prototyping new code, but it just doesn't work for final code. So you can't get away without reserving some space at the end of every display list for as many sprites as you will need. Quote Link to comment Share on other sites More sharing options...
kenfused Posted October 21, 2004 Author Share Posted October 21, 2004 I finally got around to loading it, and it looks pretty nice. It does slow down noticably when there are more sprites on the screen, though. From 4fps down to about 2.5fps. Are you rebuilding the display list every time through? I've tried that before, and the DMA just sucks too many CPU cycles to do that kind of stuff. It's okay when prototyping new code, but it just doesn't work for final code. So you can't get away without reserving some space at the end of every display list for as many sprites as you will need. Currently the DLL is built once and is not modified. For each line I have enough memory reserved for the DL entry for the background up to X number of sprites, and 2 bytes for a terminator. I have a DLI on a blank line at the end, that writes the Dlist entries for each of the moving objects that falls on a lline and a terminator. (The game screen DL enties are written at startup and fixed since they do not change). It also still could be optimized a little since I am doing 5 byte headers, and writing some DList terminators when I do not have to (because the next sprite will overwrite) Currently since it is a demo, the main not interupt portion is just updating X and Y cords and has a time killing delay loop and is not syncronized in any way, so if more cycles are being used when more sprites are being displayed, the loop probably takes longer and things slow down. This actually happens a little in my 5200 version, but the number of sprites on screen in the game is fixed 99% of the time. Do you (or anyone know), is there a terminating sequence for the Display List List, or do I have to output a certain number of lines? What happens with too few or too many? All of the docs I have seen are not really clear. Quote Link to comment Share on other sites More sharing options...
kenfused Posted October 21, 2004 Author Share Posted October 21, 2004 Ok, got my 7800 and CC2 running. Didnt realize how slow it ran on the real thing, so I greatly decreased the delay loop for this version bd7800.zip Quote Link to comment Share on other sites More sharing options...
+Mitch Posted October 21, 2004 Share Posted October 21, 2004 Ok, got my 7800 and CC2 running. Didnt realize how slow it ran on the real thing, so I greatly decreased the delay loop for this version Well, it definitely runs MUCH faster now. Mitch Quote Link to comment Share on other sites More sharing options...
Bruce Tomlin Posted October 21, 2004 Share Posted October 21, 2004 Currently the DLL is built once and is not modified. For each line I have enough memory reserved for the DL entry for the background up to X number of sprites, and 2 bytes for a terminator. I have a DLI on a blank line at the end, that writes the Dlist entries for each of the moving objects that falls on a lline and a terminator. (The game screen DL enties are written at startup and fixed since they do not change). It also still could be optimized a little since I am doing 5 byte headers, and writing some DList terminators when I do not have to (because the next sprite will overwrite) Okay then, you are indeed doing it the "right way". Do you (or anyone know), is there a terminating sequence for the Display List List, or do I have to output a certain number of lines? What happens with too few or too many? All of the docs I have seen are not really clear. Maria just goes for as many scan lines as she wants, which is different between PAL and NTSC. To be "PAL-safe", just add however many scanlines worth of empty DLL entries are needed (I'm not gonna look it up). This won't do anything about colors or game timing based on vertical retrace, but it won't leave crap at the bottom of the screen. I guess I better get my ass in gear and get to work on my 7800 project. Right now I'm working on a right-joystick-port driven monitor so I can do single step and breakpoints. I'm itching to get my game logic working to a demo-able state; it's been at least two months since I've made any progress. Quote Link to comment Share on other sites More sharing options...
ubersaurus Posted October 21, 2004 Share Posted October 21, 2004 And I want to get the hang of assembly so that I can get to work on MY 7800 project. A burgertime clone for 7800 though, I'm definitely gonna have to look into buying that when it's completed. Quote Link to comment Share on other sites More sharing options...
Rob Mitchell Posted October 23, 2004 Share Posted October 23, 2004 I've tried out both of these ROMs on my Cuttle Cart2. In both I get a stable playfield but the sprites are moving diagonally all over the place. Is this what everyone else is getting? BTW: I'm using the 7800_32K "bankswitching." Rob Mitchell, Atlanta, GA Quote Link to comment Share on other sites More sharing options...
+Mitch Posted October 23, 2004 Share Posted October 23, 2004 I've tried out both of these ROMs on my Cuttle Cart2. In both I get a stable playfield but the sprites are moving diagonally all over the place. Is this what everyone else is getting? BTW: I'm using the 7800_32K "bankswitching." Rob Mitchell, Atlanta, GA Yes, it's just a demo right now. Mitch Quote Link to comment Share on other sites More sharing options...
kenfused Posted October 23, 2004 Author Share Posted October 23, 2004 I've tried out both of these ROMs on my Cuttle Cart2. In both I get a stable playfield but the sprites are moving diagonally all over the place. Is this what everyone else is getting? BTW: I'm using the 7800_32K "bankswitching." Its just a demo to test if the display routines were working. If you want to walk around and not do much... bd7800.zip Quote Link to comment Share on other sites More sharing options...
DracIsBack Posted October 24, 2004 Share Posted October 24, 2004 I just can't seem to get this game working on the Cuttle Cart. I love my CC2, but it's software isn't the most user friendly. Anyone want to do a step by step on how to make this game run? I can't get the CC2 to even recognize it! Quote Link to comment Share on other sites More sharing options...
kenfused Posted October 24, 2004 Author Share Posted October 24, 2004 I just can't seem to get this game working on the Cuttle Cart. I love my CC2, but it's software isn't the most user friendly. Anyone want to do a step by step on how to make this game run? I can't get the CC2 to even recognize it!In testing, I use the serial downloader option, since I need to be able to quickly test a new change. Otherwise, I think you have to add an appropriate line to menu.txt, run the menu geneator, and copy the menu.cc2 file and the game file to the mmc card. Quote Link to comment Share on other sites More sharing options...
+Mitch Posted October 24, 2004 Share Posted October 24, 2004 I use the serial downloader as well. If you want to add it manually use this line: 7800: Beef Drop BD7800 7800_32K 78BIOS Mitch Quote Link to comment Share on other sites More sharing options...
Godzilla Posted October 24, 2004 Share Posted October 24, 2004 That looks great! I can't wait to see an actual new game on the 7800! :-) Quote Link to comment Share on other sites More sharing options...
Shannon Posted October 24, 2004 Share Posted October 24, 2004 I see that beef drop has been released for the 5200. Congradulations!! Quote Link to comment Share on other sites More sharing options...
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