diff --git a/kernel/branches/Kolibri-acpi/core/apic.inc b/kernel/branches/Kolibri-acpi/core/apic.inc
index 531f652ffc..b472d7f6b0 100644
--- a/kernel/branches/Kolibri-acpi/core/apic.inc
+++ b/kernel/branches/Kolibri-acpi/core/apic.inc
@@ -429,7 +429,7 @@ start_ap:
         jz      .exit
 
         cmp     eax, [cpu_count]
-        ja      .exit
+        jae     .exit
 
         mov     eax, [smpt+eax*4]
         shl     eax, 24
diff --git a/kernel/branches/Kolibri-acpi/core/memory.inc b/kernel/branches/Kolibri-acpi/core/memory.inc
index 8ec76978b9..ab65e891dd 100644
--- a/kernel/branches/Kolibri-acpi/core/memory.inc
+++ b/kernel/branches/Kolibri-acpi/core/memory.inc
@@ -8,6 +8,7 @@
 $Revision$
 
 
+
 align 4
 proc alloc_page
 
@@ -1554,3 +1555,27 @@ proc create_ring_buffer stdcall, size:dword, flags:dword
 .fail:
         ret
 endp
+
+
+align 4
+print_mem:
+        mov     edi, BOOT_VAR + 0x9104
+        mov     ecx, [edi-4]
+        test    ecx, ecx
+        jz     .done
+
+@@:
+        mov eax, [edi]
+        mov edx, [edi+4]
+        add eax, [edi+8]
+        adc edx, [edi+12]
+
+        DEBUGF  1, "K : E820 %x%x - %x%x type %d\n", \
+                    [edi+4], [edi],\
+                    edx, eax, [edi+16]
+        add     edi, 20
+        dec     ecx
+        jnz     @b
+.done:
+        ret
+
diff --git a/kernel/branches/Kolibri-acpi/detect/biosmem.inc b/kernel/branches/Kolibri-acpi/detect/biosmem.inc
index 7b66cd4b66..85557ed619 100644
--- a/kernel/branches/Kolibri-acpi/detect/biosmem.inc
+++ b/kernel/branches/Kolibri-acpi/detect/biosmem.inc
@@ -23,8 +23,8 @@
         cmp     eax, 0x534D4150
         jnz     no_E820
 e820_mem_loop:
-        cmp     byte [di+16], 1 ; ignore non-free areas
-        jnz     e820_mem_next
+;        cmp     byte [di+16], 1 ; ignore non-free areas
+;        jnz     e820_mem_next
         inc     byte [0x9100]
         add     di, 20
 e820_mem_next:
diff --git a/kernel/branches/Kolibri-acpi/init.inc b/kernel/branches/Kolibri-acpi/init.inc
index 88cbecd770..26acda978d 100644
--- a/kernel/branches/Kolibri-acpi/init.inc
+++ b/kernel/branches/Kolibri-acpi/init.inc
@@ -45,8 +45,12 @@ proc mem_test
         ret
 endp
 
+
 align 4
 proc init_mem
+
+        xchg bx, bx
+
 ; calculate maximum allocatable address and number of allocatable pages
         mov     edi, BOOT_VAR-OS_BASE + 0x9104
         mov     ecx, [edi-4]
@@ -55,6 +59,9 @@ proc init_mem
 .calcmax:
 ; round all to pages
         mov     eax, [edi]
+        cmp     [edi+16], byte 1
+        jne      .unusable
+
         test    eax, 0xFFF
         jz      @f
         neg     eax
diff --git a/kernel/branches/Kolibri-acpi/kernel.asm b/kernel/branches/Kolibri-acpi/kernel.asm
index 5fccd81038..7777b59a7a 100644
--- a/kernel/branches/Kolibri-acpi/kernel.asm
+++ b/kernel/branches/Kolibri-acpi/kernel.asm
@@ -1056,10 +1056,12 @@ end if
         mov     eax, [cpu_count]
         test    eax, eax
         jnz     @F
-        mov al, 1                               ; at least one CPU
+        mov     al, 1                             ; at least one CPU
 @@:
         DEBUGF  1, "K : %d CPU detected\n", eax
 
+        call    print_mem
+
 ; START MULTITASKING
 
 ; A 'All set - press ESC to start' messages if need