Fixed a bug regarding the copper output mode with looping waves having a loop-offset.

Fixed wrong register use on triggering waves regarding the loop offset.

src/raspberry_casket.asm

@@ -1,5 +1,5 @@
 ;--------------------------------------------------------------------
-; Raspberry Casket Player V1.1 (20-May-2023)
+; Raspberry Casket Player V1.1 (30-May-2023)
 ; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ;
 ; Provided by Chris 'platon42' Hodges <chrisly@platon42.de>
@@ -3388,7 +3388,7 @@ pre_PlayerTick:
         move.w  wi_chipram_w(a3),d0
         move.w  d0,d6
         subq.w  #1,d6
-        cmp.w   d4,d6
+        cmp.w   d5,d6
         ble.s   .lbC00118E
         sub.w   d5,d0
         bra.s   .lbC000F48
@@ -3402,7 +3402,7 @@ pre_PlayerTick:
 .inst_nowave_has_subloop
         move.l  pv_wave_sample_table(a4),pcd_out_ptr_l(a5)
 
-        move.w  wi_loop_offset_w(a3),d4
+        move.w  wi_loop_offset_w(a3),d5
 .inst_set_no_lof
         move.w  d3,pcd_out_lof_w(a5)
         moveq.l #0,d0
@@ -3410,7 +3410,7 @@ pre_PlayerTick:
         addq.w  #1,d0
         move.w  d0,pcd_inst_subloop_wait_w(a5)
 
-        move.w  d4,pcd_inst_loop_offset_w(a5)
+        move.w  d5,pcd_inst_loop_offset_w(a5)
         st      pcd_inst_ping_pong_dir_b(a5)
 
 .inst_wave_selected
@@ -3997,7 +3997,7 @@ pre_PlayerTick:
         tst.b   ocd_trigger(a0)
         beq.s   .setptrvolper
         move.b  d5,ocd_trigger(a0)
-        sub.l   d2,d6
+        sub.l   d2,d0
 .setptrvolper
         move.w  d0,1*4(a1)  ; ac_ptr (lo)
         swap    d0