diff --git a/jtag/ChangeLog b/jtag/ChangeLog
index bc4f4069..918a2e31 100644
--- a/jtag/ChangeLog
+++ b/jtag/ChangeLog
@@ -1,3 +1,9 @@
+2003-08-28  Marcel Telka  <marcel@telka.sk>
+
+	* src/bus/pxa2x0.c (pxa250_bus_read_next, pxa250_bus_read_end): Added support for BOOT_DEF register
+		emulation.
+	(pxa2x0_bus_area): Added Memory Mapped registers (Memory Ctl) area.
+
 2003-08-28  Marcel Telka  <marcel@telka.sk>
 
 	* src/readmem.c (readmem): Replaced bus_width macro with new bus_area.
diff --git a/jtag/NEWS b/jtag/NEWS
index 58764192..d95fc295 100644
--- a/jtag/NEWS
+++ b/jtag/NEWS
@@ -7,6 +7,7 @@ See libbrux/NEWS for more news.
 		- Altera EPM7128AETC100 (Rojhalat Ibrahim)
 	* Added additional checks for valid ByteBlaster cable connection and enabled all variants
 		of the cable (patch 793313, Rojhalat Ibrahim).
+	* Added BOOT_DEF register emulation for PXA2x0 bus driver.
 	* Fixed minor bugs.
 
 jtag-0.5 (2003-08-19):
diff --git a/jtag/src/bus/pxa2x0.c b/jtag/src/bus/pxa2x0.c
index 0386a406..a345e44a 100644
--- a/jtag/src/bus/pxa2x0.c
+++ b/jtag/src/bus/pxa2x0.c
@@ -1,6 +1,7 @@
 /*
  * $Id$
  *
+ * Intel PXA2x0 compatibile bus driver via BSR
  * Copyright (C) 2002, 2003 ETC s.r.o.
  *
  * This program is free software; you can redistribute it and/or
@@ -142,30 +143,41 @@ pxa250_bus_read_start( bus_t *bus, uint32_t adr )
 	chain_shift_data_registers( chain, 0 );
 }
 
-static uint32_t pxa250_bus_read_end( bus_t *bus );
-
 static uint32_t
 pxa250_bus_read_next( bus_t *bus, uint32_t adr )
 {
 	part_t *p = PART;
 	chain_t *chain = CHAIN;
-	int i;
-	uint32_t d = 0;
+	uint32_t d;
+	uint32_t old_last_adr = LAST_ADR;
 
-	if (LAST_ADR >= 0x04000000)
-		pxa250_bus_read_start( bus, adr );
-	if (adr >= 0x04000000)
-		return pxa250_bus_read_end( bus );
 	LAST_ADR = adr;
 
-	/* see Figure 6-13 in [1] */
-	setup_address( bus, adr );
-	chain_shift_data_registers( chain, 1 );
+	if (adr < UINT32_C(0x04000000)) {
+		int i;
 
-	for (i = 0; i < 32; i++)
-		d |= (uint32_t) (part_get_signal( p, MD[i] ) << i);
+		/* see Figure 6-13 in [1] */
+		setup_address( bus, adr );
+		chain_shift_data_registers( chain, 1 );
+
+		d = 0;
+		for (i = 0; i < 32; i++)
+			d |= (uint32_t) (part_get_signal( p, MD[i] ) << i);
+
+		return d;
+	}
 
-	return d;
+	if (adr < UINT32_C(0x48000000))
+		return 0;
+
+	if (adr < UINT32_C(0x4C000000)) {
+		if (old_last_adr == (MC_BASE + BOOT_DEF_OFFSET))
+			return BOOT_DEF;
+
+		return 0;
+	}
+
+	return 0;
 }
 
 static uint32_t
@@ -173,23 +185,35 @@ pxa250_bus_read_end( bus_t *bus )
 {
 	part_t *p = PART;
 	chain_t *chain = CHAIN;
-	int i;
-	uint32_t d = 0;
 
-	if (LAST_ADR >= 0x04000000)
-		return 0;
+	if (LAST_ADR < UINT32_C(0x04000000)) {
+		int i;
+		uint32_t d = 0;
 
-	/* see Figure 6-13 in [1] */
-	part_set_signal( p, nCS[0], 1, 1 );
-	part_set_signal( p, nOE, 1, 1 );
-	part_set_signal( p, nSDCAS, 1, 1 );
+		/* see Figure 6-13 in [1] */
+		part_set_signal( p, nCS[0], 1, 1 );
+		part_set_signal( p, nOE, 1, 1 );
+		part_set_signal( p, nSDCAS, 1, 1 );
 
-	chain_shift_data_registers( chain, 1 );
+		chain_shift_data_registers( chain, 1 );
 
-	for (i = 0; i < 32; i++)
-		d |= (uint32_t) (part_get_signal( p, MD[i] ) << i);
+		for (i = 0; i < 32; i++)
+			d |= (uint32_t) (part_get_signal( p, MD[i] ) << i);
+
+		return d;
+	}
+
+	if (LAST_ADR < UINT32_C(0x48000000))
+		return 0;
+
+	if (LAST_ADR < UINT32_C(0x4C000000)) {
+		if (LAST_ADR == (MC_BASE + BOOT_DEF_OFFSET))
+			return BOOT_DEF;
+
+		return 0;
+	}
 
-	return d;
+	return 0;
 }
 
 static uint32_t
@@ -264,9 +288,27 @@ pxa2x0_bus_area( bus_t *bus, uint32_t adr, bus_area_t *area )
 		return 0;
 	}
 
+	if (adr < UINT32_C(0x48000000)) {
+		area->description = NULL;
+		area->start = UINT32_C(0x04000000);
+		area->length = UINT64_C(0x44000000);
+		area->width = 0;
+
+		return 0;
+	}
+
+	if (adr < UINT32_C(0x4C000000)) {
+		area->description = N_("Memory Mapped registers (Memory Ctl)");
+		area->start = UINT32_C(0x48000000);
+		area->length = UINT64_C(0x04000000);
+		area->width = 32;
+
+		return 0;
+	}
+
 	area->description = NULL;
-	area->start = UINT32_C(0x04000000);
-	area->length = UINT64_C(0xFC000000);
+	area->start = UINT32_C(0x4C000000);
+	area->length = UINT64_C(0xB4000000);
 	area->width = 0;
 
 	return 0;