diff --git a/kernel/trunk/core/memory.inc b/kernel/trunk/core/memory.inc
index 37cd8190d2..78f9a137b1 100644
--- a/kernel/trunk/core/memory.inc
+++ b/kernel/trunk/core/memory.inc
@@ -949,53 +949,72 @@ endp
 
 sys_IPC:
 ;input:
-;  eax=1 - set ipc buffer area
-;    ebx=address of buffer
-;    ecx=size of buffer
+;  ebx=1 - set ipc buffer area
+;    ecx=address of buffer
+;    edx=size of buffer
 ;  eax=2 - send message
 ;    ebx=PID
 ;    ecx=address of message
 ;    edx=size of message
 
-           cmp  eax,1
-           jne @f
-           call set_ipc_buff
-           mov [esp+36], eax
-           ret
+	dec	ebx
+	jnz	@f
+
+	mov  	eax,[current_slot]
+        pushf
+        cli
+        mov  	[eax+APPDATA.ipc_start],ecx     ;set fields in extended information area
+        mov  	[eax+APPDATA.ipc_size],edx
+
+        add edx, ecx
+        add edx, 4095
+        and edx, not 4095
+
+.touch: mov eax, [ecx]
+        add ecx, 0x1000
+        cmp ecx, edx
+        jb  .touch
+
+        popf
+        mov [esp+32], ebx	;ebx=0
+        ret
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;2
 @@:
-           cmp eax, 2
-           jne @f
-           stdcall sys_ipc_send, ebx, ecx, edx
-           mov [esp+36], eax
-           ret
+	dec	ebx
+	jnz	@f
+
+        stdcall sys_ipc_send, ecx, edx, esi
+        mov 	[esp+32], eax
+        ret
 @@:
-           xor eax, eax
-           not eax
-           mov [esp+36], eax
-           ret
+	or	eax,-1
+        mov 	[esp+32], eax
+        ret
 
-align 4
-proc set_ipc_buff
+;align 4
+;proc set_ipc_buff
 
-           mov  eax,[current_slot]
-           pushf
-           cli
-           mov  [eax+APPDATA.ipc_start],ebx     ;set fields in extended information area
-           mov  [eax+APPDATA.ipc_size],ecx
-
-           add ecx, ebx
-           add ecx, 4095
-           and ecx, not 4095
-
-.touch:    mov eax, [ebx]
-           add ebx, 0x1000
-           cmp ebx, ecx
-           jb  .touch
-
-           popf
-           xor eax, eax
-           ret
-endp
+;           mov  eax,[current_slot]
+;           pushf
+;           cli
+;           mov  [eax+APPDATA.ipc_start],ebx     ;set fields in extended information area
+;           mov  [eax+APPDATA.ipc_size],ecx
+;
+;           add ecx, ebx
+;           add ecx, 4095
+;           and ecx, not 4095
+;
+;.touch:    mov eax, [ebx]
+;           add ebx, 0x1000
+;           cmp ebx, ecx
+;           jb  .touch
+;
+;           popf
+;           xor eax, eax
+;           ret
+;endp
 
 proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword
            locals
diff --git a/kernel/trunk/core/syscall.inc b/kernel/trunk/core/syscall.inc
index 538593c317..89b5280d0a 100644
--- a/kernel/trunk/core/syscall.inc
+++ b/kernel/trunk/core/syscall.inc
@@ -157,12 +157,12 @@ iglobal
       dd 0
       dd socket                  ; 53-Socket interface
       dd 0
-      dd sound_interface         ; 55-Sound interface
+      dd 0
       dd 0
       dd 0
       dd file_system             ; 58-Common file system interface
       dd 0
-      dd sys_IPC                 ; 60-Inter Process Communication
+      dd 0
       dd sys_gs                  ; 61-Direct graphics access
       dd sys_pci                 ; 62-PCI functions
       dd sys_msg_board           ; 63-System message board
@@ -228,12 +228,12 @@ iglobal
       dd stack_driver_stat       ; 52-Stack driver status
       dd cross_order             ; 53-Socket interface
       dd undefined_syscall       ; 54-reserved
-      dd cross_order             ; 55-Sound interface
+      dd sound_interface	 ; 55-Sound interface
       dd undefined_syscall       ; 56-reserved
       dd sys_pcibios             ; 57-PCI BIOS32
       dd cross_order             ; 58-Common file system interface
       dd undefined_syscall       ; 59-reserved
-      dd cross_order             ; 60-Inter Process Communication
+      dd sys_IPC		 ; 60-Inter Process Communication
       dd cross_order             ; 61-Direct graphics access
       dd cross_order             ; 62-PCI functions
       dd cross_order             ; 63-System message board
diff --git a/kernel/trunk/sound/playnote.inc b/kernel/trunk/sound/playnote.inc
index aa3e0f6b16..065bbc809f 100644
--- a/kernel/trunk/sound/playnote.inc
+++ b/kernel/trunk/sound/playnote.inc
@@ -21,22 +21,22 @@ $Revision$
 align 4
 sound_interface:
 
-           cmp   eax, edi                      ; this is subfunction #55 ?
-           jne  retFunc55                      ; if no then return.
+           cmp   eax,ebx			; this is subfunction #55 ?
+           jne  retFunc55			; if no then return.
 
            cmp   byte [sound_flag],0
            jne   retFunc55
 
            movzx eax, byte [countDelayNote]
-           or    al, al                        ; player is busy ?
-           jnz  retFunc55                      ; return counter delay Note
+           or    al, al                         ; player is busy ?
+           jnz   retFunc55                      ; return counter delay Note
 
-           mov   [memAdrNote],edx
+           mov   [memAdrNote],esi;edx
            call  get_pid
            mov   [pidProcessNote],eax
            xor   eax, eax                      ; Ok!  EAX = 0
  retFunc55:
-           mov   [esp+36], eax                 ; return value EAX for application
+           mov   [esp+32], eax                 ; return value EAX for application
            ret
 
 iglobal