Yeah, that's another way of triggering the ending scene. If you can somehow put a nonzero value into $07d8 and manage to get back to the world map, then the game will end the next time you exit a level. By the way, to be reproducible on a real NES, a run should not depend on the values of uninitialized bytes of RAM. That's why you should avoid executing past $0102.
I got the warp on my nes real time! Thank you so much lord tom and HSS The hard part is getting those 3 frame perfect object and probably gonna take forever to get in a good run but it's doable
I got the warp on my nes real time! Thank you so much lord tom and HSS The hard part is getting those 3 frame perfect object and probably gonna take forever to get in a good run but it's doable
Future improvements Wow, it's getting tough to imagine where it might come from. As mentioned, a World 1 improvement would need to be 14+ frames. What's more, the next possible Bowser Quick Drop manipulation would require getting to Bowser 17 frames faster than our best time (38 frames faster than this submission). We'll keep looking, though!
Language: lua-- address we're targeting target = 0xae -- table of the lengths of the various instructions lengths={ 2,2,2,2, -- 0x(0,2,4,6,8,A,C,E)0-3 2,2,2,2, -- 0x(0,2,4,6,8,A,C,E)4-7 1,2,1,2, -- 0x(0,2,4,6,8,A,C,E)8-B 3,3,3,3, -- 0x(0,2,4,6,8,A,C,E)C-F 2,2,0,2,-- 0x(1,3,5,7,9,B,D,F)0-3 2,2,2,2,-- 0x(1,3,5,7,9,B,D,F)4-7 1,3,1,3,-- 0x(1,3,5,7,9,B,D,F)8-B 3,3,3,3 -- 0x(1,3,5,7,9,B,D,F)C-F } -- main loop while true do -- each frame, always start from same address with all variables reset except for target startAddress=0x81 displayCol=0 displayRow=0 jumpFlag=false postJump=false message = 'Fail'; branchMsg = 'No Branches'; -- will show up to 16 rows while displayRow<16 do -- get the instruction and determine its length op=memory.readbyte(startAddress) opLength=lengths[AND(op,31)+1] -- start of instruction, white color='#ffffff' -- we got to our target! Hooray! if startAddress==target and not jumpFlag then color='#00ff00' message='Success' end -- JSR (20) and JMP (4c,6c) have length 3, special color if op==0x20 or op==0x4c or op==0x6c then color='#ff0000' -- red opLength=3 jumpFlag=true -- RTI (40), RTS (60), AND(1000 1111) == 2 --> 0xxx 0010 --> 02, 12, 22...72 -- length 0 for 0x12, 32...F2. elseif opLength==0 or AND(op,0x8f)==2 or op==0x40 or op==0x60 then color='#ff0000' -- red opLength=1 jumpFlag=true -- Branch instructions -- essentially we warn elseif AND(op,31)==0x10 then color='#880000' -- light red branchMsg = "May Branch" end -- process the bytes in an operation for i=0,opLength-1 do -- read the byte x=memory.readbyte(startAddress) -- mark bytes beyond a jump -- dark/not executed if postJump then color='#502020' end -- display the byte! gui.text(displayCol*16,8+displayRow*8,string.format('%02X',x),color) -- next byte in this instruction startAddress=startAddress+1 color='#0000ff' -- data bytes -- advance display, use next row if needed displayCol=displayCol+1 if displayCol==16 then displayCol=0 displayRow=displayRow+1 end -- note that we're now beyond a jumping instruction, so further bytes won't be executed if jumpFlag then postJump = true end end -- terminate (for this frame) if beyond target if startAddress>target+2 or startAddress<0x80 then gui.text(10*18,(displayRow+1)*8,message,'#ffffff'); gui.text(10*18,(displayRow+2)*8,branchMsg,'#ffffff'); break end end FCEU.frameadvance(); end
The forum broke the code. Try again with "Disable HTML in this post" checked. Edit: Lol. Guess where I am.
Also, was able to get a successful demo of the hopefully easier upper room realtime strat.
