Difference between revisions of "Port Sonic 1's Sound Driver to Sonic 2"
From Sonic Retro
m (Created page with "==Clone Driver== With the Sonic 2 Clone Driver being public, would anyone mind if this guide was changed to use this sound driver instead of the plain vanilla Sonic 1 version? ~~~~") |
(→Typo/mutation in provided Sonic 1 Driver file: new section) |
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==Clone Driver== | ==Clone Driver== | ||
With the Sonic 2 Clone Driver being public, would anyone mind if this guide was changed to use this sound driver instead of the plain vanilla Sonic 1 version? [[User:SOTI|SOTI]] 18:02, 25 October 2010 (CDT) | With the Sonic 2 Clone Driver being public, would anyone mind if this guide was changed to use this sound driver instead of the plain vanilla Sonic 1 version? [[User:SOTI|SOTI]] 18:02, 25 October 2010 (CDT) | ||
| + | |||
| + | == Typo/mutation in provided Sonic 1 Driver file == | ||
| + | |||
| + | To whomever reads this (Tweaker hopefully?), I have noted that the actual sound driver file in the .zip download has a typo that prevents asm compilation. Here is the typo, and a comparison to the un-mutated driver from SMSPlay (http://forums.sonicretro.org/index.php?showtopic=22136&st=0&p=488501&#entry488501) | ||
| + | |||
| + | Original, mutated driver: | ||
| + | |||
| + | loc_71B82: | ||
| + | lea ($FFF000).l,a6 | ||
| + | clr.b $E(a6) | ||
| + | tst.b 3(a6) ; is music paused? | ||
| + | bne.w loc_7g v ; if yes, branch | ||
| + | subq.b #1,1(a6) | ||
| + | bne.s loc_71B9E | ||
| + | '''jsr sub_7 �N» �N¹ �Â(R¸þ�LßÿNs ��~�¼�Ò�â���ª�–�Ø�¦��²�ªNù �ÀPNqNqA8''' jsr sub_72504(pc) | ||
| + | |||
| + | SMPSPlay version of driver: | ||
| + | |||
| + | loc_71B82: | ||
| + | lea ($FFF000).l,a6 | ||
| + | clr.b $E(a6) | ||
| + | tst.b 3(a6) ; is music paused? | ||
| + | bne.w loc_71E50 ; if yes, branch | ||
| + | subq.b #1,1(a6) | ||
| + | bne.s loc_71B9E | ||
| + | '''jsr sub_7260C(pc)''' | ||
| + | |||
| + | The main question is: after deleting that glitched line in the original, should the "jsr" jump to sub_72504(pc), sub_7260C(pc), or something else? | ||
| + | |||
| + | Quote: | ||
| + | "You can also delete the Sonic 2 sound driver now, if you wish, though it is not required to do so." | ||
| + | |||
| + | Moreover, more explantion needs to be given to what you can delete for the S2Snd driver. Should the programmer delete the actual "s2.sounddriver.asm" file or the code for the driver from s2.asm? If you just make the changes from the how-to, paste the ported driver into the s2.asm file, and add the sounds files from the .zip file, many errors still occur. PM me, please | ||
Revision as of 19:49, 28 November 2010
Clone Driver
With the Sonic 2 Clone Driver being public, would anyone mind if this guide was changed to use this sound driver instead of the plain vanilla Sonic 1 version? SOTI 18:02, 25 October 2010 (CDT)
Typo/mutation in provided Sonic 1 Driver file
To whomever reads this (Tweaker hopefully?), I have noted that the actual sound driver file in the .zip download has a typo that prevents asm compilation. Here is the typo, and a comparison to the un-mutated driver from SMSPlay (http://forums.sonicretro.org/index.php?showtopic=22136&st=0&p=488501&#entry488501)
Original, mutated driver:
loc_71B82: lea ($FFF000).l,a6 clr.b $E(a6) tst.b 3(a6) ; is music paused? bne.w loc_7g v ; if yes, branch subq.b #1,1(a6) bne.s loc_71B9E jsr sub_7 �N» �N¹ �Â(R¸þ�Lß?ÿNs ��~�¼�Ò�â���ª�–�Ø�¦��²�ªNù �ÀPNqNqA8 jsr sub_72504(pc)
SMPSPlay version of driver:
loc_71B82:
lea ($FFF000).l,a6
clr.b $E(a6)
tst.b 3(a6) ; is music paused?
bne.w loc_71E50 ; if yes, branch
subq.b #1,1(a6)
bne.s loc_71B9E
jsr sub_7260C(pc)
The main question is: after deleting that glitched line in the original, should the "jsr" jump to sub_72504(pc), sub_7260C(pc), or something else?
Quote: "You can also delete the Sonic 2 sound driver now, if you wish, though it is not required to do so."
Moreover, more explantion needs to be given to what you can delete for the S2Snd driver. Should the programmer delete the actual "s2.sounddriver.asm" file or the code for the driver from s2.asm? If you just make the changes from the how-to, paste the ported driver into the s2.asm file, and add the sounds files from the .zip file, many errors still occur. PM me, please