magicpc.optim.patch

diff --git a/kernel/bios/atari/magibios.s b/kernel/bios/atari/magibios.s
index 5ff8f37..2322287 100644
--- a/kernel/bios/atari/magibios.s
+++ b/kernel/bios/atari/magibios.s
@@ -622,13 +622,15 @@ inst_cook:
 * Also make sure mfp interrupts are disabled,
 * since sync_screen will lower the interrupt level.
 *
+ IFNE NOT_MAGICPC
  clr.w    vblsem
  move.l   #int_vbl,$70             ; VBL
  lea      gpip,a0
  moveq    #0,d1
  move.b d1,$12(a0) ; IMRA
  move.b d1,$14(a0) ; IMRB
- 
+ ENDC
+
  bsr      boot_init_video               ; Videosystem initialisieren
 
 * Beginn der TPA setzen (je nachdem, ob GEM enthalten ist)
@@ -728,7 +730,7 @@ bot_nofast:
 ; FIXME: might need adjustment for CT60
  moveq    #$3d,d0
  lea      exc02(pc),a1
- move.l   #exc03-exc02,d1
+ moveq.l  #exc03-exc02,d1
 
 * Benutzte Exceptionroutinen initialisieren
 
diff --git a/kernel/bios/atari/modules/scsi.s b/kernel/bios/atari/modules/scsi.s
index fb7b314..5d99816 100644
--- a/kernel/bios/atari/modules/scsi.s
+++ b/kernel/bios/atari/modules/scsi.s
@@ -232,11 +232,11 @@ ncr_rd:
  tst.b    _scsi_wrflag
  bne.b    dmarw_l1
 * lesen
- bsr      _dmaread_scsi
+ bsr.s    _dmaread_scsi
  bra      ttdmarw_ende
 * schreiben
 dmarw_l1:
- bsr      _dmawrite_scsi
+ bsr.s    _dmawrite_scsi
 
 ttdmarw_ende:
  bsr      cache_invalid       ; Veraendert KEINE Register!
diff --git a/kernel/build/atari.prj b/kernel/build/atari.prj
index 9b979da..931858c 100644
--- a/kernel/build/atari.prj
+++ b/kernel/build/atari.prj
@@ -10,6 +10,9 @@ magic.ram
 .S[-DCOUNTRY=1]
 .C[-DCOUNTRY=1]
 
+.S[-DNOT_MAGICPC=0]
+.S[-DMAGICPC=1]
+
 .C[-A-]
 .C[-K-]
 .S[-DHADES=0]
diff --git a/kernel/inc/auto.s b/kernel/inc/auto.s
index a28886a..cff802d 100644
--- a/kernel/inc/auto.s
+++ b/kernel/inc/auto.s
@@ -70,6 +70,7 @@ bot_coo_ende:
  move.l	d0,_p_cookies			; Zeiger umsetzen
 bot_no_coo:
 
+ IFNE NOT_MAGICPC
 /* override idt cookie */
  move.l	p_mgxinf,a0
  jsr		rinf_idt
@@ -80,6 +81,7 @@ bot_no_coo:
  beq.s      no_idt_val
  move.l     a1,4(a0)         /* overwrite _IDT cookie value */
 no_idt_val:
+ ENDC
 
 * Jetzt (ab MagiC 6) log-Datei oeffnen