diff --git a/artwork/sfx/scorch_SFX-feat.txt b/artwork/sfx/scorch_SFX-feat.txt
new file mode 100644
index 0000000..e7bb349
--- /dev/null
+++ b/artwork/sfx/scorch_SFX-feat.txt
@@ -0,0 +1,40 @@
+;* --------BEGIN--------
+;* C:\Atari\rmt\rmt128\scorch_SFX-only-str.rmt
+FEAT_SFX		equ 1
+FEAT_GLOBALVOLUMEFADE	equ 0		;RMTGLOBALVOLUMEFADE variable
+FEAT_NOSTARTINGSONGLINE	equ 0
+FEAT_INSTRSPEED		equ 1
+FEAT_CONSTANTSPEED		equ 16		;(0 times)
+FEAT_COMMAND1		equ 1		;(8 times)
+FEAT_COMMAND2		equ 0		;(0 times)
+FEAT_COMMAND3		equ 0		;(0 times)
+FEAT_COMMAND4		equ 0		;(0 times)
+FEAT_COMMAND5		equ 0		;(0 times)
+FEAT_COMMAND6		equ 0		;(0 times)
+FEAT_COMMAND7SETNOTE		equ 0		;(0 times)
+FEAT_COMMAND7VOLUMEONLY		equ 0		;(0 times)
+FEAT_PORTAMENTO		equ 0		;(0 times)
+FEAT_FILTER		equ 1		;(22 times)
+FEAT_FILTERG0L		equ 0		;(0 times)
+FEAT_FILTERG1L		equ 0		;(0 times)
+FEAT_FILTERG0R		equ 0		;(0 times)
+FEAT_FILTERG1R		equ 0		;(0 times)
+FEAT_BASS16		equ 0		;(0 times)
+FEAT_BASS16G1L		equ 0		;(0 times)
+FEAT_BASS16G3L		equ 0		;(0 times)
+FEAT_BASS16G1R		equ 0		;(0 times)
+FEAT_BASS16G3R		equ 0		;(0 times)
+FEAT_VOLUMEONLYG0L		equ 0		;(0 times)
+FEAT_VOLUMEONLYG2L		equ 0		;(0 times)
+FEAT_VOLUMEONLYG3L		equ 0		;(0 times)
+FEAT_VOLUMEONLYG0R		equ 0		;(0 times)
+FEAT_VOLUMEONLYG2R		equ 0		;(0 times)
+FEAT_VOLUMEONLYG3R		equ 0		;(0 times)
+FEAT_TABLETYPE		equ 0		;(0 times)
+FEAT_TABLEMODE		equ 0		;(0 times)
+FEAT_TABLEGO		equ 1		;(2 times)
+FEAT_AUDCTLMANUALSET		equ 1		;(6 times)
+FEAT_VOLUMEMIN		equ 0		;(0 times)
+FEAT_EFFECTVIBRATO		equ 1		;(1 times)
+FEAT_EFFECTFSHIFT		equ 1		;(11 times)
+;* --------END--------
diff --git a/artwork/sfx/scorch_SFX-only-str.rmt b/artwork/sfx/scorch_SFX-only-str.rmt
new file mode 100644
index 0000000..cc689e5
Binary files /dev/null and b/artwork/sfx/scorch_SFX-only-str.rmt differ
diff --git a/artwork/sfx/scorch_SFX-only.rmt b/artwork/sfx/scorch_SFX-only.rmt
new file mode 100644
index 0000000..9fa9461
Binary files /dev/null and b/artwork/sfx/scorch_SFX-only.rmt differ
diff --git a/constants.asm b/constants.asm
index 2f55d79..5cdd5a4 100644
--- a/constants.asm
+++ b/constants.asm
@@ -559,8 +559,6 @@ CreditsStart
 	dta d"Warsaw, Miam",d"i"*
 	dta d"2000-202",d"2"*
 	dta d" "*
-	dta d"B",d"y"*
-	dta d" "*
 	dta d"Programmin",d"g"*
 	dta d"Tomasz 'Pecus' Peck",d"o"*
 	dta d"Pawel 'pirx' Kalinowsk",d"i"*
@@ -568,15 +566,19 @@ CreditsStart
 	dta d"SFX, Music and Suppor",d"t"*
 	dta d"Michal 'Miker' Szpilowsk",d"i"*
 	dta d" "*
-	dta d"Additional Musi",d"c"*
-	dta d"Mario 'Emkay' Kri",d"x"*
-	dta d" "*
+	.IF target != 5200
+	  dta d"Additional Musi",d"c"*
+	  dta d"Mario 'Emkay' Kri",d"x"*
+	  dta d" "*
+	.ENDIF
 	dta d"Code Optimizatio",d"n"*
 	dta d"Piotr '0xF' Fusi",d"k"*
 	dta d" "*
 	dta d"Ar",d"t"*
 	dta d"Adam Wachowsk",d"i"*
-	dta d"Krzysztof 'Kaz' Ziembi",d"k"*
+	.IF target != 5200
+	  dta d"Krzysztof 'Kaz' Ziembi",d"k"*
+	.ENDIF
 	dta d" "*
 	dta d"Ideas and Q",d"A"*
 	dta d"Bocianu, Probabilitydragon, EnderDude",d","*
@@ -586,9 +588,16 @@ CreditsStart
 	dta d" "*
 	dta d"Additional testin",d"g"*
 	dta d"Arek and Alex Peck",d"o"*
-	dta d"  "*
-	dta d"Stay tuned for the FujiNet version",d"!"*
+	.IF target != 5200
+	  dta d"  "*
+	  dta d"Stay tuned for the FujiNet version",d"!"*
+	.ENDIF
 	dta d"         "*
 CreditsEnd
-CreditsLines=44
+.IF target = 5200
+  CreditsLines=36
+.ELSE
+  CreditsLines=42  ; 34 in reality. add 7?
+.ENDIF
+
 .endif
diff --git a/display.asm b/display.asm
index 7c4a95e..4da3c22 100644
--- a/display.asm
+++ b/display.asm
@@ -103,173 +103,5 @@ DLCreditsAddr
 ;------------------------
 ; end of "variables" (RAM)
 ;------------------------
-; start of "constants" (ROM)
-;-----------------------------------------------
-;Screen displays go first to avoid crossing 4kb barrier
-;-----------------------------------------------
-OptionsScreen
- dta d"Welcome to Scorch v. "
- build  ; 4 bytes from scorch.asm (fancy method) :) 
- dta d"  (un)2000-2022"
- dta d" Please select option with cursor keys  "
- dta d"     and press (Return) to proceed      "
-MoreUp
- dta d"         "
- dta 92,92,92
- dta d"  more  "
- dta 92,92,92
- dta d"         "
-MoreDown
- dta d"         "
- dta 93,93,93
- dta d"  more  "
- dta 93,93,93
- dta d"         "
-WeaponsDescription
-     ; 0123456789012345678901234567890123456789
- dta d"Tab"*
- dta d   ": Defensive/Offensive weapon "
-PurchaseDescription
-     ; 0123456789012345678901234567890123456789
- dta d"Space"*
- dta      d": Purchase  "
- dta                  d"Return"*
- dta                        d": Finish "
-ActivateDescription
-     ; 0123456789012345678901234567890123456789
- dta d"Space"*
- dta      d": Activate  "
- dta                  d"Return"*
- dta                        d": Finish "
-EmptyLine
- dta d"                                        "
-;---------------------------------------------------
-OptionsTitle
- dta d"       scorch       "*
-DifficultyTitle
- dta d"   difficulty   "*
-PurchaseTitle
- dta d"purchase weapons"
-InventoryTitle
- dta d"activate weapons"*
-GameOverTitle
- dta d"     game  over     "*
-GameOverTitle2
- dta d"   Player   Points  Hits   Earned Money "
-;-----------------------------------------------------
-;-------------display-lists---------------------------
-;-----------------------------------------------------
 
-dl ; MAIN game display list
-        .byte 0
-        .byte $42 
-        .word textbuffer
-        .byte $02, $02 +$80 ;DLI
-        .byte $10  ; 2 blank lines 
-
-        .byte $4f
-        .word display                   ; 1 line
-        :76 .by $0f                     ;76
-        .by $0f+$80 ; DLI (black bar)   ;2
-        .by $0f+$80 ; DLI
-        :13 .by $0f                     ;13
-        .by $0f+$80 ; DLI (black bar)   ;2
-        .by $0f+$80 ; DLI
-        :8 .by $0f                      ;8
-        .by $4f                         ;1
-        .wo display+$0ff0
-        :2 .by $0f                      ;2
-        .by $0f+$80 ; DLI (black bar)   ;2
-        .by $0f+$80 ; DLI
-        :9 .by $0f                      ;9
-        .by $0f+$80 ; DLI (black bar)   ;2
-        .by $0f+$80 ; DLI
-        :8 .by $0f                      ;8
-        .by $0f+$80 ; DLI (black bar)   ;2
-        .by $0f+$80 ; DLI
-        :7 .by $0f                      ;7
-        .by $0f+$80 ; DLI (black bar)   ;2
-        .by $0f+$80 ; DLI
-        :6 .by $0f                      ;6
-        .by $0f+$80 ; DLI (black bar)   ;2
-        .by $0f+$80 ; DLI
-        :5 .by $0f                      ;5
-        .by $0f+$80 ; DLI (black bar)   ;2
-        .by $0f+$80 ; DLI
-        :4 .by $0f                      ;4
-        .by $0f+$80 ; DLI (black bar)   ;2
-        .by $0f+$80 ; DLI
-        :3 .by $0f                      ;3
-        .by $0f+$80 ; DLI (black to end);1
-       :38 .byte $0f                    ;35 ..... = 200
-        .by $4f
-        .wo EmptyLine   ; additional line of ground
-        .byte $41
-        .word dl
-;-----------------------------------------------
-        .ALIGN $1000  ; WARNING!!!! 4KiB barrier crossing here, might need reassignment!!!
-OptionsDL
-        .byte $70
-		.byte $47
-		.word OptionsTitle
-        .byte $70,$70
-       .byte $42
-        .word OptionsScreen
-        .byte $30,$02,$02,$70
-		.byte $42
-		.word OptionsHere
-		.byte $10
-        :maxOptions-1 .by $02,$10
-		:(9-maxOptions) .by $70,$10
-		.byte $80
-        .byte $4f
-        .word (display+140*40)
-        :21 .by $0f                     ;76
-        .byte $41
-        .word OptionsDL
-;------------------------
-;Enter names of tanks DL
-NameDL
-        .byte $70
-		.byte $47
-		.word DifficultyTitle
-		.byte $70,$70
-        .byte $42
-        .word NameScreen
-        .byte $30
-        .byte $02,$30+$80,$02
-        .byte $10,$02,$02,$02,$30,$02,$02
-        .byte $41
-        .word NameDL
-; -------------------------------------------------
-GameOverResults = display+$0ff0 ; reuse after game
-Credits = GameOverResults +(6*40)
-CreditsLastLine = Credits + (CreditsLines*40)
-GameOverDL
-       .byte $70,$40
-       .byte $47    ; 16 gr8 lines
-       .word GameOverTitle
-       .byte $4f   ; 1 line
-       .word display+(40*72)
-       :28 .byte $0f   ; 28 lines
-       .byte $0f+$80
-       .byte $4f   ; 1 line
-       .word display+(40*32)
-       :30 .byte $0f   ; 30 lines
-       .byte $0f+$80   ; 1 line
-       .byte $4f   ; 1 line
-       .word display+(40*72)
-       :7 .byte $0f    ; 7 lines
-       .byte $00+$80    ; 1 line
-       .byte $42    ; 7 tekst lines
-       .word GameOverTitle2
-       .byte $00+$80
-       .byte $42
-       .word GameOverResults
-       :5 .byte $00+$80,$02
-	   .byte $01
-	   .word DLCreditsFragm
-; ---------------
-; end of "constants" (ROM)
-;-----------------------------------------------
 .endif
\ No newline at end of file
diff --git a/display_static.asm b/display_static.asm
new file mode 100644
index 0000000..b8f8d10
--- /dev/null
+++ b/display_static.asm
@@ -0,0 +1,174 @@
+;   @com.wudsn.ide.asm.mainsourcefile=scorch.asm
+
+.IF *>0 ;this is a trick that prevents compiling this file alone
+;------------------------
+; start of "constants" (ROM)
+;-----------------------------------------------
+;Screen displays go first to avoid crossing 4kb barrier
+;-----------------------------------------------
+OptionsScreen
+ dta d"Welcome to Scorch v. "
+ build  ; 4 bytes from scorch.asm (fancy method) :) 
+ dta d"  (un)2000-2022"
+ dta d" Please select option with cursor keys  "
+ dta d"     and press (Return) to proceed      "
+MoreUp
+ dta d"         "
+ dta 92,92,92
+ dta d"  more  "
+ dta 92,92,92
+ dta d"         "
+MoreDown
+ dta d"         "
+ dta 93,93,93
+ dta d"  more  "
+ dta 93,93,93
+ dta d"         "
+WeaponsDescription
+     ; 0123456789012345678901234567890123456789
+ dta d"Tab"*
+ dta d   ": Defensive/Offensive weapon "
+PurchaseDescription
+     ; 0123456789012345678901234567890123456789
+ dta d"Space"*
+ dta      d": Purchase  "
+ dta                  d"Return"*
+ dta                        d": Finish "
+ActivateDescription
+     ; 0123456789012345678901234567890123456789
+ dta d"Space"*
+ dta      d": Activate  "
+ dta                  d"Return"*
+ dta                        d": Finish "
+EmptyLine
+ dta d"                                        "
+;---------------------------------------------------
+OptionsTitle
+ dta d"       scorch       "*
+DifficultyTitle
+ dta d"   difficulty   "*
+PurchaseTitle
+ dta d"purchase weapons"
+InventoryTitle
+ dta d"activate weapons"*
+GameOverTitle
+ dta d"     game  over     "*
+GameOverTitle2
+ dta d"   Player   Points  Hits   Earned Money "
+;-----------------------------------------------------
+;-------------display-lists---------------------------
+;-----------------------------------------------------
+
+dl ; MAIN game display list
+        .byte 0
+        .byte $42 
+        .word textbuffer
+        .byte $02, $02 +$80 ;DLI
+        .byte $10  ; 2 blank lines 
+
+        .byte $4f
+        .word display                   ; 1 line
+        :76 .by $0f                     ;76
+        .by $0f+$80 ; DLI (black bar)   ;2
+        .by $0f+$80 ; DLI
+        :13 .by $0f                     ;13
+        .by $0f+$80 ; DLI (black bar)   ;2
+        .by $0f+$80 ; DLI
+        :8 .by $0f                      ;8
+        .by $4f                         ;1
+        .wo display+$0ff0
+        :2 .by $0f                      ;2
+        .by $0f+$80 ; DLI (black bar)   ;2
+        .by $0f+$80 ; DLI
+        :9 .by $0f                      ;9
+        .by $0f+$80 ; DLI (black bar)   ;2
+        .by $0f+$80 ; DLI
+        :8 .by $0f                      ;8
+        .by $0f+$80 ; DLI (black bar)   ;2
+        .by $0f+$80 ; DLI
+        :7 .by $0f                      ;7
+        .by $0f+$80 ; DLI (black bar)   ;2
+        .by $0f+$80 ; DLI
+        :6 .by $0f                      ;6
+        .by $0f+$80 ; DLI (black bar)   ;2
+        .by $0f+$80 ; DLI
+        :5 .by $0f                      ;5
+        .by $0f+$80 ; DLI (black bar)   ;2
+        .by $0f+$80 ; DLI
+        :4 .by $0f                      ;4
+        .by $0f+$80 ; DLI (black bar)   ;2
+        .by $0f+$80 ; DLI
+        :3 .by $0f                      ;3
+        .by $0f+$80 ; DLI (black to end);1
+       :38 .byte $0f                    ;35 ..... = 200
+        .by $4f
+        .wo EmptyLine   ; additional line of ground
+        .byte $41
+        .word dl
+;-----------------------------------------------
+        .ALIGN $1000  ; WARNING!!!! 4KiB barrier crossing here, might need reassignment!!!
+OptionsDL
+        .byte $70
+		.byte $47
+		.word OptionsTitle
+        .byte $70,$70
+       .byte $42
+        .word OptionsScreen
+        .byte $30,$02,$02,$70
+		.byte $42
+		.word OptionsHere
+		.byte $10
+        :maxOptions-1 .by $02,$10
+		:(9-maxOptions) .by $70,$10
+		.byte $80
+        .byte $4f
+        .word (display+140*40)
+        :21 .by $0f                     ;76
+        .byte $41
+        .word OptionsDL
+;------------------------
+;Enter names of tanks DL
+NameDL
+        .byte $70
+		.byte $47
+		.word DifficultyTitle
+		.byte $70,$70
+        .byte $42
+        .word NameScreen
+        .byte $30
+        .byte $02,$30+$80,$02
+        .byte $10,$02,$02,$02,$30,$02,$02
+        .byte $41
+        .word NameDL
+; -------------------------------------------------
+GameOverResults = display+$0ff0 ; reuse after game
+Credits = GameOverResults +(6*40)
+CreditsLastLine = Credits + (CreditsLines*40)
+GameOverDL
+       .byte $70,$40
+       .byte $47    ; 16 gr8 lines
+       .word GameOverTitle
+       .byte $4f   ; 1 line
+       .word display+(40*72)
+       :28 .byte $0f   ; 28 lines
+       .byte $0f+$80
+       .byte $4f   ; 1 line
+       .word display+(40*32)
+       :30 .byte $0f   ; 30 lines
+       .byte $0f+$80   ; 1 line
+       .byte $4f   ; 1 line
+       .word display+(40*72)
+       :7 .byte $0f    ; 7 lines
+       .byte $00+$80    ; 1 line
+       .byte $42    ; 7 tekst lines
+       .word GameOverTitle2
+       .byte $00+$80
+       .byte $42
+       .word GameOverResults
+       :5 .byte $00+$80,$02
+	   .byte $01
+	   .word DLCreditsFragm
+; ---------------
+; end of "constants" (ROM)
+;-----------------------------------------------
+.endif
\ No newline at end of file
diff --git a/scorch.asm b/scorch.asm
index 451d42c..ff1c750 100644
--- a/scorch.asm
+++ b/scorch.asm
@@ -35,10 +35,19 @@
 ;and due to being always short of time/energy (to finish the game)
 ;we decided it must go in 'English' to let other people work on it
 
+.def target = 800 ;5200  ; or 800
+
 .macro build
 	dta d"1.13" ; number of this build (3 bytes)
 .endm
 
+.macro RMTSong
+    .IF target != 5200
+      lda #:1
+      jsr RMTSongSelect
+    .ENDIF
+.endm
+
     icl 'definitions.asm'
     
     
@@ -153,9 +162,10 @@
     icl 'lib/ATARISYS.ASM'
     icl 'lib/macro.hea'
 
-    ;splash screen and musix
-	icl 'artwork/Scorch50.asm'
-
+    .IF target !=5200
+      ;splash screen and musix
+	  icl 'artwork/Scorch50.asm'
+    .ENDIF
 
     ;Game loading address
     ORG  $3000
@@ -165,6 +175,7 @@ WeaponFont
 ;Screen displays go here to avoid crossing 4kb barrier
 ;-----------------------------------------------
     icl 'display.asm'
+    icl 'display_static.asm'
 ;----------------------------------------------
     
 ;--------------------------------------------------
@@ -221,9 +232,7 @@ START
 
 	;jsr GameOverScreen	; only for test !!!
     
-    lda #song_main_menu
-    jsr RmtSongSelect
-    
+    RMTSong song_main_menu
 
     jsr Options  ;startup screen
 	jsr MakeDarkScreen
@@ -281,8 +290,7 @@ SettingBarrel
     ; Results are number of other deaths
     ; before the player dies itself
 
-    lda #song_round_over
-    jsr RmtSongSelect
+    RmtSong song_round_over
     jsr DisplayResults
 
 	jsr DemoModeOrKey
@@ -385,7 +393,7 @@ GoGameOver
 NoGameOverYet
     inc CurrentRoundNr
     jsr MakeDarkScreen   ; issue #72
-    jsr RmtSongSelect
+    ; jsr RmtSongSelect  ; ?????
     mva #sfx_silencer sfx_effect
     jsr PMoutofscreen
 
@@ -402,8 +410,7 @@ NoGameOverYet
 ; the shooting angle is randomized
 ; of course gains an loses are zeroed
 
-    lda #song_ingame
-    jsr RmtSongSelect
+    RmtSong song_ingame
 
 	jsr SetPMWidth
 	lda #0
@@ -1641,7 +1648,7 @@ MakeDarkScreen
 ;--------------------------------------------------
 ;  starting song line 0-255 to A reg
 	cmp #song_ingame
-	bne noingame	; noMusic blck onlu ingame song
+	bne noingame	; noMusic blocks only ingame song
     bit noMusic
     spl:lda #song_silencio
 noingame
@@ -1691,11 +1698,20 @@ PLAYER
     .ECHO 'PLAYER: ',*
     icl 'artwork/sfx/rmtplayr.a65'
 
+    .IF target=5200
 MODUL    equ $b000                                 ;address of RMT module
-    opt h-                                         ;RMT module is standard Atari binary file already
-    ins "artwork/sfx/scorch_str6.rmt"  ;include music RMT module
-    opt h+
+      opt h-                                         ;RMT module is standard Atari binary file already
+      ins "artwork/sfx/scorch_SFX-only-str.rmt"  ;include music RMT module
+      opt h+
+
+    .ELSE    
+MODUL    equ $b000                                 ;address of RMT module
+      opt h-                                         ;RMT module is standard Atari binary file already
+      ins "artwork/sfx/scorch_str6.rmt"  ;include music RMT module
+      opt h+
+    .ENDIF
 ;
+MODULEND
 ;----------------------------------------------
     org $bf80
 font4x4
diff --git a/scorch.xex b/scorch.xex
index d54baea..62634f5 100644
Binary files a/scorch.xex and b/scorch.xex differ
diff --git a/textproc.asm b/textproc.asm
index f112879..964d17f 100644
--- a/textproc.asm
+++ b/textproc.asm
@@ -298,12 +298,14 @@ GoToActivation
     lda #@dmactl(narrow|dma) ; narrow screen width, DL on, P/M off
     sta dmactls
 
+    .IF target != 5200
     lda #song_supermarket
 	bit IsInventory
 	bpl @+
 	lda #song_inventory
 @	jsr RmtSongSelect
-
+    .ENDIF 
+    
     ldx tankNr
     lda TankStatusColoursTable,x
     sta COLOR2
@@ -1864,8 +1866,7 @@ quit_seppuku
     beq @+ ;unconditional jump, because TypeLine4x4 ends with beq
 
 GameOver4x4
-    lda #song_round_over
-    jsr RmtSongSelect
+    RmtSong song_round_over
     mwa #LineGameOver LineAddress4x4
     mwa #((ScreenWidth/2)-(8*4)) LineXdraw
     mva ResultY LineYdraw
@@ -2113,8 +2114,7 @@ MakeAllTanksVisible
 	jsr SetStandardBarrels
 
 	; start music and animations
-    lda #song_ending_looped
-    jsr RmtSongSelect
+    RmtSong song_ending_looped
     ; initial tank positions randomization
     ldx #(MaxPlayers-1)   ;maxNumberOfPlayers-1
 @
diff --git a/weapons.asm b/weapons.asm
index 5fb42cd..60d8780 100644
--- a/weapons.asm
+++ b/weapons.asm
@@ -1192,8 +1192,7 @@ callInventory
     jsr Purchase
 afterInventory
 	jsr MakeDarkScreen	
-    lda #song_ingame
-    jsr RmtSongSelect
+    RmtSong song_ingame
     mva #0 escFlag
     jsr DisplayStatus
     jsr SetMainScreen   
@@ -1430,8 +1429,7 @@ pressedM
     ; have you tried turning the music off and on again?
     lda #$ff
     eor:sta noMusic
-    lda #song_ingame
-    jsr RmtSongSelect
+    RmtSong song_ingame
     jsr WaitForKeyRelease
     jmp BeforeFire