Remove debug IRQ disable/enable from PiSCSI boot ROM

This somehow broke the interrupt handlers for a bunch of things, including the standard HDD installed version of Monkey Island II.

platforms/amiga/amiga-registers.h

@@ -39,6 +39,9 @@ void adjust_gayle_1200();
 #define POTGOR  0xDFF016
 #define SERDAT  0xDFF030
 
+#define DMACON  0xDFF096
+#define DMACONR 0xDFF002
+
 /* RAMSEY ADDRESSES */
 #define RAMSEY_REG 0xDE0003 /* just a nibble, it should return 0x08 for defaults with 16MB */
 #define RAMSEY_ID 0xDE0043  /* Either 0x0D or 0x0F (most recent version) */

platforms/amiga/piscsi/device_driver_amiga/bootrom.s

@@ -260,7 +260,7 @@ Init:       ; After Diag patching, our romtag will point to this
             ;
             align 2
             move.l a6,-(a7)             ; Push A6 to stack
-            move.w #$00B8,$dff09a       ; Disable interrupts during init
+            ;move.w #$00B8,$dff09a       ; Disable interrupts during init
             move.l  #3,PiSCSIDebugMe
             move.l a3,PiSCSIAddr4
 
@@ -401,7 +401,7 @@ EndPartitions:
             move.l (a7)+,a6             ; Pop A6 from stack
             move.l #803,PiSCSIDebugMe
 
-            move.w #$80B8,$dff09a       ; Re-enable interrupts
+            ;move.w #$80B8,$dff09a       ; Re-enable interrupts
             move.l #804,PiSCSIDebugMe
             moveq.l #1,d0               ; indicate "success"
             move.l #805,PiSCSIDebugMe