Basic Questions and Answers Thread

Lets see…
Can you check the 1111 line in Sonic.asm?

 

"Line 1111 emulator" means that an opcode starting with 0xF (1111 in binary) was executed. If I recall, opcodes starting with that (and also 0xA/1010) were reserved for future opcodes in newer generations of the m68k family. The vector table allows you to define a custom handler for such opcodes, as a way to have forwards compatibility (Comix Zone does use it for its own purposes, though). Line number information is not built into the ROM, as that would be hugely wasteful in terms of ROM space, and would easily go over the max ROM size limit.

Sonic 1 doesn't do that and just simply displays an error. The 8 digit hex value is supposed to be the address right after where the crash happened, but it appears to be corrupt (not surprising, considering you aren't supposed to be triggering the Line 1010/1111 emulator exception, unless you are doing it on purpose for whatever reason), which means further debugging will be needed.

You should give more information about your situation if you want the appropriate help. What did you implement or change? If you aren't sure, try to roll back changes until you can determine what's causing it. You can also analyze the call stack to help pin down where the crash might have happened at (vladikcomper's error handler would be VERY helpful in this instance, as it will give you a far more detailed crash message, so I recommend you install that).

 

I

I have added the Sonic 3 Sonic sprites using the guide by Clownacy, I also did port some songs from other sonic games And a imcomplete spindash, I might change some codes to see if i can fix it though

 

Oh i fixed it, The error was because i added a extra song to music id 94, I'm not sure why this did happen though, i had the remove the song

 

Glad to hear it's been taken care of

 

check the label 'PlaySoundID' inside of s1.sounddriver.asm

Code:

PlaySoundID:
        moveq    #0,d7
        move.b    SMPS_RAM.v_sound_id(a6),d7
        beq.w    StopAllSound
        bpl.s    .locret                ; If >= 0, return (not a valid sound, bgm or command)
        move.b    #$80,SMPS_RAM.v_sound_id(a6)    ; reset    music flag
    if FixBugs
        cmpi.b    #bgm__Last,d7        ; Is this music ($81-$93)?
    else
        ; DANGER! Music ends at $93, yet this checks until $9F; attempting to
        ; play sounds $94-$9F will cause a crash!
        ; See LevSel_NoCheat for more.
        cmpi.b    #bgm__Last+$C,d7    ; Is this music ($81-$9F)?
    endif

just enable the FixBugs flag in sonic.asm or replace 'if FixBugs' until 'endif' with 'cmpi.b #bgm__Last,d7 ; Is this music ($81-$93)?'

 

im making sonic 1 rom hack sprites but im bigginer to rom hack and dont know alot thing to rom hack so if someone helps me im so happy!
(im making she in sonic 1)

 

Hmm… i think i can help.

first of all you need this things:

Disassembly (i recomend Github Asm68k)
And to port sprites Flex2 And SonMapED

 

thank you!
and yes i used sonmap but when i edit sonic artunc bin file with sonmap it makes glich sound in sega sound
and DMA queue appear in some sprites but i dont know how to fix and im stuck 0~0

also when tried add sprite sheet in flex 2 mapping became like this and im stuck again

Spoiler: Large images

 

i got it also someone moved my thread here and im begginer to here and i dont know me need post qna and help in where

 

So... Is this a good newer version of my romhack?

A bit ago on this thread I posted a demo of BHZ and I got feedback which that feedback definitely improved some stuff inside the game and I want more feedback on this version on what should be improved so I can implement it into my romhack!

Changes: Mysterious Marble is now playable and tweaks to Bird Hill Zone's object layout.

Also if there is a bug in this version, It might be fixed in the newest version since this is a build from December 16.

(Also I am aware of a bug on the title screen that prevents you from getting past it on Blastem although Level Select can bypass it)

 

I have a problem, I have ported the Knuckles uncompressed art, mapping, DPLCs and animations, But some animations (like jumping and skidding) are corrupted! is there any fix for that? By the way i followed the sonic 3 sprites guide by Clownacy, Here is a image:

Spoiler: Big image

[/ ]

 

Help (this happens in SBZ1)

 

(fixed it by doing the correct way please remove)

 

Invalid pointers in the animation file. If you've edited anything, I'd say go back and check, otherwise, you should probably go through loc_D348 or Ani_Van. I've had my fair share of illegal instruction crashes in SBZ1.

 

I need Help in my romhack, BRZ In my Romhack has a graphics bug I don't know how to fix.

Spoiler

It's just a copy of Bird Hills's art, blocks,chunks, and level layout so I don't know what's wrong with it.

 

A quick question, in terms of following the code found on Plutiedev's website, I can't seem to figure out how to read a specific bit from a nibble in the mouse packet table, nor can I figure out how to display a sprite at specific coordinates saved in two free RAM addresses and have that update constantly. I'm hacking Sonic 1 by the way. Any ideas? I've already gotten really far, with custom cursor art and an object for it.

The mouse is mapped to Port 2 as well.

 

The easiest way to read a bit only is reading the byte then doing a andi for storing the bit and btst for just checking.
Fortunately in Sonic 1 there are camera modes for objects so setting bytes 2 and 3 off in obRender ($01) renders it straight to the screen but the y axis will use obScreenY ($0C)