Add remaining PCM drivers disassembly

hansbonini · Jul 11, 2024 · 9c85ac1 · 9c85ac1
1 parent 8573fc7
commit 9c85ac1
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Showing 25 changed files with 3,219 additions and 146 deletions.
diff --git a/Altered Beast.asm b/Altered Beast.asm
diff --git a/Makefile b/Makefile
@@ -31,8 +31,13 @@ SJASMPLUS					:= $(TOOLS_DIR)/sjasmplus/sjasmplus.exe
 all: extract build
 build: z80_assemble 68k_assemble sha1
 z80_assemble:
+	$(SJASMPLUS) --raw="$(Z80_DIR)/sounddriver.bin" --lst="$(Z80_DIR)/sounddriver.txt" "$(Z80_DIR)/sounddriver.asm"
 	$(SJASMPLUS) --raw="$(Z80_DIR)/pcm_driver/pcm_driver1.bin" --lst="$(Z80_DIR)/pcm_driver/pcm_driver1.txt" "$(Z80_DIR)/pcm_driver/pcm_driver1.asm"
 	$(SJASMPLUS) --raw="$(Z80_DIR)/pcm_driver/pcm_driver2.bin" --lst="$(Z80_DIR)/pcm_driver/pcm_driver2.txt" "$(Z80_DIR)/pcm_driver/pcm_driver2.asm"
+	$(SJASMPLUS) --raw="$(Z80_DIR)/pcm_driver/pcm_driver3.bin" --lst="$(Z80_DIR)/pcm_driver/pcm_driver3.txt" "$(Z80_DIR)/pcm_driver/pcm_driver3.asm"
+	$(SJASMPLUS) --raw="$(Z80_DIR)/pcm_driver/pcm_driver4.bin" --lst="$(Z80_DIR)/pcm_driver/pcm_driver4.txt" "$(Z80_DIR)/pcm_driver/pcm_driver4.asm"
+	$(SJASMPLUS) --raw="$(Z80_DIR)/pcm_driver/pcm_driver5.bin" --lst="$(Z80_DIR)/pcm_driver/pcm_driver5.txt" "$(Z80_DIR)/pcm_driver/pcm_driver5.asm"
+	$(SJASMPLUS) --raw="$(Z80_DIR)/pcm_driver/pcm_driver6.bin" --lst="$(Z80_DIR)/pcm_driver/pcm_driver6.txt" "$(Z80_DIR)/pcm_driver/pcm_driver6.asm"
 68k_assemble:
 	$(ASM68K) $(ASM68K_SWITCHES) "$(NAME).asm","$(BUILD_DIR)/$(NAME) ($(REGION)) ($(VERSION)) [!].bin",,"$(BUILD_DIR)/$(NAME) ($(REGION)) ($(VERSION)) [!].txt"
 sha1:

diff --git a/audio/pcm/000173B4.pcm b/audio/pcm/000173B4.pcm
diff --git a/audio/pcm/0001AFD4.pcm b/audio/pcm/0001AFD4.pcm
diff --git a/audio/pcm/0001CF56.pcm b/audio/pcm/0001CF56.pcm
diff --git a/audio/pcm/0001EED8.pcm b/audio/pcm/0001EED8.pcm
diff --git a/includes/helpers/init_z80.asm b/includes/helpers/init_z80.asm
@@ -4,7 +4,7 @@ loc_4924:                               ; CODE XREF: reset_z80+3A   j
 transfer_sounddriver_to_z80:            ; CODE XREF: reset_z80+28   j
                                         ; play_sound+34   j
                 clr.l   (dword_FFFE1A).w
-                clr.w   (unk_FFFE26).w
+                clr.w   (word_FFFE26).w
                 lea     (z80snd_driver).l,a5
                 lea     (Z80_RAM).l,a6
                 move.w  #$1CB,d0
@@ -27,7 +27,7 @@ loc_4946:                               ; CODE XREF: reset_z80+74   j
                 move.b  (a5)+,(a6)+
                 dbf     d0,loc_4946
                 lea     (byte_A01D03).l,a6
-                lea     (unk_FFFE20).w,a5
+                lea     (dword_FFFE20).w,a5
                 move.b  (a5),(a6)+
                 move.b  (a5),(a6)+
 loc_4978:                               ; CODE XREF: play_sound+B2   j

diff --git a/includes/helpers/load_pcm.asm b/includes/helpers/load_pcm.asm
@@ -7,7 +7,7 @@ load_pcm:                               ; CODE XREF: play_sound+6   j
                 lea     loc_4A46+4(pc,d0.w),a5
                 move.w  (a5)+,d0
                 movea.l (a5),a5
-                move.w  (unk_FFFE1E).w,d7
+                move.w  (word_FFFE1E).w,d7
                 move.w  #$100,(IO_Z80BUS).l ; Send the Z80 a bus request
 loc_4A12:                               ; CODE XREF: play_sound+80   j
                 btst    #0,(IO_Z80BUS).l ; Give the Z80 the bus back

diff --git a/includes/helpers/play_sound.asm b/includes/helpers/play_sound.asm
@@ -2,11 +2,11 @@ play_sound:                             ; CODE XREF: VBLANK+6E   p
                 tst.w   (dword_FFFE1A).w
                 beq.s   locret_49DA
                 bmi.s   load_pcm
-                move.b  (unk_FFFE20).w,d0
+                move.b  (dword_FFFE20).w,d0
                 andi.w  #$7F,d0
                 cmpi.w  #$F,d0
                 bhi.s   loc_49B6
-                move.b  bgm_list(pc,d0.w),(unk_FFFE20).w
+                move.b  bgm_list(pc,d0.w),(dword_FFFE20).w
 loc_49B6:                               ; CODE XREF: play_sound+14   j
                 move.w  #$100,(IO_Z80BUS).l ; Send the Z80 a bus request
 loc_49BE:                               ; CODE XREF: play_sound+2C   j

diff --git a/includes/helpers/reset_z80.asm b/includes/helpers/reset_z80.asm
@@ -1,6 +1,6 @@
 reset_z80:                              ; CODE XREF: Reset+AA   p
                                         ; ROM:screen_segalogo   p ...
-                move.l  #$80000000,(unk_FFFE20).w
+                move.l  #$80000000,(dword_FFFE20).w
 loc_48FA:                               ; CODE XREF: ROM:0000BAE4   p
                                         ; DATA XREF: ROM:0000BAE4   o
                 move.w  #$100,(IO_Z80BUS).l ; Send the Z80 a bus request

diff --git a/includes/helpers/write_z80ram_1d03.asm b/includes/helpers/write_z80ram_1d03.asm
@@ -9,6 +9,6 @@ loc_4AD4:                               ; CODE XREF: write_z80ram_1d03+16   j
                 move.b  d7,(byte_A01D03).l
                 move.w  #0,(IO_Z80BUS).l ; Give the Z80 the bus back
 loc_4AEC:                               ; CODE XREF: write_z80ram_1d03+4   j
-                move.b  d7,(unk_FFFE20).w
+                move.b  d7,(dword_FFFE20).w
                 rts
 ; End of function write_z80ram_1d03
diff --git a/src/ram_addrs.inc b/src/ram_addrs.inc
@@ -158,16 +158,15 @@ SEGARD_DECOMP_BUFFER equ $FFFFF400
 unk_FFFE00 equ $FFFFFE00
 DIFFICULTY equ $FFFFFE04
 LIVES equ $FFFFFE06
-unk_FFFE07 equ $FFFFFE07
 BEAST equ $FFFFFE08
-unk_FFFE12 equ $FFFFFE12
-unk_FFFE14 equ $FFFFFE14
+word_FFFE12 equ $FFFFFE12
+word_FFFE14 equ $FFFFFE14
 STAGE equ $FFFFFE16
 byte_FFFE18 equ $FFFFFE18
 dword_FFFE1A equ $FFFFFE1A
-unk_FFFE1E equ $FFFFFE1E
-unk_FFFE20 equ $FFFFFE20
-unk_FFFE26 equ $FFFFFE26
+word_FFFE1E equ $FFFFFE1E
+dword_FFFE20 equ $FFFFFE20
+word_FFFE26 equ $FFFFFE26
 unk_FFFFFF equ $FFFFFFFF
 Z80_RAM equ $A00000
 byte_A0017F equ $A0017F