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ReC98/th02/snd/kajaint.asm

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[Maintenance] Rename snd_kaja_func() to snd_kaja_interrupt() Oh, right, these functions can have parameters. So, let's turn snd_kaja_func() into a macro that combines the function number and the parameter into the AX value for the driver.
2015-03-15 22:26:44 +00:00
proc_defconv snd_kaja_interrupt
[Reverse-engineering] PMD and MMD function call wrapper Well, the naming. Even though only TH02 actually uses MIDI (and thus, the MMD driver), every game since then contains interrupt instructions for both functions. We could just name it "pmd", since it seems like that's what came first - the AH numbers of the 6 functions that make up MMD's interrupt API are identical to those of the equivalent functions in PMD, even including gaps in the numbering for PMD functions that don't have an equivalent in MIDI. However, except for the FM sound effect handling and the key display in TH05's Music Room, these 6 functions are all the games actually use. Also, we already distinguish between PMD and MMD in the driver check functions, and it might be confusing to only imply PMD from now on? So, "kaja" it is, collectively referring to the shared aspects of both drivers.
2014-11-26 19:03:58 +00:00
@@ax = word ptr (cPtrSize + 2)
push bp
mov bp, sp
Make all sound functions and variables available to C
2015-02-23 10:47:22 +00:00
cmp _snd_active, 0
[Reverse-engineering] PMD and MMD function call wrapper Well, the naming. Even though only TH02 actually uses MIDI (and thus, the MMD driver), every game since then contains interrupt instructions for both functions. We could just name it "pmd", since it seems like that's what came first - the AH numbers of the 6 functions that make up MMD's interrupt API are identical to those of the equivalent functions in PMD, even including gaps in the numbering for PMD functions that don't have an equivalent in MIDI. However, except for the FM sound effect handling and the key display in TH05's Music Room, these 6 functions are all the games actually use. Also, we already distinguish between PMD and MMD in the driver check functions, and it might be confusing to only imply PMD from now on? So, "kaja" it is, collectively referring to the shared aspects of both drivers.
2014-11-26 19:03:58 +00:00
jz short @@ret
mov ax, [bp+@@ax]
Make all sound functions and variables available to C
2015-02-23 10:47:22 +00:00
cmp _snd_midi_active, 1
[Reverse-engineering] PMD and MMD function call wrapper Well, the naming. Even though only TH02 actually uses MIDI (and thus, the MMD driver), every game since then contains interrupt instructions for both functions. We could just name it "pmd", since it seems like that's what came first - the AH numbers of the 6 functions that make up MMD's interrupt API are identical to those of the equivalent functions in PMD, even including gaps in the numbering for PMD functions that don't have an equivalent in MIDI. However, except for the FM sound effect handling and the key display in TH05's Music Room, these 6 functions are all the games actually use. Also, we already distinguish between PMD and MMD in the driver check functions, and it might be confusing to only imply PMD from now on? So, "kaja" it is, collectively referring to the shared aspects of both drivers.
2014-11-26 19:03:58 +00:00
jz short @@midi
int 60h
jmp short @@ret
@@midi:
int 61h
@@ret:
pop bp
if GAME ge 3
ret 2
else
ret
endif
[C decompilation] [th02/op] Music Room Yes, all of it. Including the bouncing polygons, of course. And since it's placed at the end of ZUN's code inside the executable, the code's already position-independent and fully hackable.
2015-02-24 14:45:38 +00:00
endp_defconv