diff --git a/src/sys/include/ubixos/dma.h b/src/sys/include/ubixos/dma.h
index 0caac6f..e3f6ba5 100755
--- a/src/sys/include/ubixos/dma.h
+++ b/src/sys/include/ubixos/dma.h
@@ -1,8 +1,12 @@
 /**************************************************************************************
- Copyright (c) 2002
-      The UbixOS Project
+ Copyright (c) 2002 The UbixOS Project
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are prohibited.
 
  $Id$
+
 **************************************************************************************/
 
 #ifndef _DMA_H
@@ -10,6 +14,7 @@
 
 #include <ubixos/types.h>
 
-int dmaXfer(uChar channel,uLong address,uInt length,uChar read);
+void dmaXfer(uChar channel,uLong address,uInt length,uChar read);
+void _dmaXfer(uChar dmaChannel,uChar page,uInt offset,uInt length,uChar mode);
 
 #endif
\ No newline at end of file
diff --git a/src/sys/kernel/dma.c b/src/sys/kernel/dma.c
index 58a9de9..8288c0e 100755
--- a/src/sys/kernel/dma.c
+++ b/src/sys/kernel/dma.c
@@ -1,11 +1,54 @@
 /**************************************************************************************
- Copyright (c) 2002
-      The UbixOS Project
+ Copyright (c) 2002 The UbixOS Project
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are prohibited.
 
  $Id$
+
 **************************************************************************************/
 
 #include <ubixos/dma.h>
+#include <ubixos/io.h>
+#include <ubixos/types.h>
 
-int dmaXfer(uChar channel,uLong address,uInt length,uChar read) {
+#define lowByte(x)  (x & 0x00FF)
+#define highByte(x) ((x & 0xFF00) >> 8)
+
+uChar maskReg[8]   = { 0x0A, 0x0A, 0x0A, 0x0A, 0xD4, 0xD4, 0xD4, 0xD4 };
+uChar clearReg[8]  = { 0x0C, 0x0C, 0x0C, 0x0C, 0xD8, 0xD8, 0xD8, 0xD8 };
+uChar modeReg[8]   = { 0x0B, 0x0B, 0x0B, 0x0B, 0xD6, 0xD6, 0xD6, 0xD6 };
+uChar addrPort[8]  = { 0x00, 0x02, 0x04, 0x06, 0xC0, 0xC4, 0xC8, 0xCC };
+uChar pagePort[8]  = { 0x87, 0x83, 0x81, 0x82, 0x8F, 0x8B, 0x89, 0x8A };
+uChar countPort[8] = { 0x01, 0x03, 0x05, 0x07, 0xC2, 0xC6, 0xCA, 0xCE };
+
+void dmaXfer(uChar channel,uLong address,uInt length,uChar read) {
+  unsigned char page=0, mode=0;
+  unsigned int offset = 0;
+  if (read) {
+    mode = 0x48 + channel;
+    }
+  else {
+    mode = 0x44 + channel;
+    }
+  page = address >> 16;
+  offset = address & 0xFFFF;
+  length--;
+  _dmaXfer(channel, page, offset, length, mode);
   }
+
+void _dmaXfer(uChar dmaChannel,uChar page,uInt offset,uInt length,uChar mode) {
+  asm("cli");
+  outportByte(maskReg[dmaChannel], 0x04 | dmaChannel);
+  outportByte(clearReg[dmaChannel], 0x00);
+  outportByte(modeReg[dmaChannel], mode);
+  outportByte(addrPort[dmaChannel], lowByte(offset));
+  outportByte(addrPort[dmaChannel], highByte(offset));
+  outportByte(pagePort[dmaChannel], page);
+  outportByte(countPort[dmaChannel], lowByte(length));
+  outportByte(countPort[dmaChannel], highByte(length));
+  outportByte(maskReg[dmaChannel], dmaChannel);
+  asm("sti");
+
+  }
\ No newline at end of file