Kernel supports up to 64 IRQs

- enough for 2 io apics (usually with 24 pins)

include/arch/i386/interrupt.h

@@ -35,7 +35,11 @@
 #define IRQ8_VECTOR     0x70	/* no need to move IRQ8-15 */
 
 /* Hardware interrupt numbers. */
+#ifndef CONFIG_APIC
 #define NR_IRQ_VECTORS    16
+#else
+#define NR_IRQ_VECTORS    64
+#endif
 #define CLOCK_IRQ          0
 #define KEYBOARD_IRQ       1
 #define CASCADE_IRQ        2	/* cascade enable for 2nd AT controller */

include/minix/type.h

@@ -182,7 +182,7 @@ struct kmessages {
 #include <machine/interrupt.h>
 
 /* randomness struct: random sources after interrupts: */
-#define RANDOM_SOURCES			NR_IRQ_VECTORS
+#define RANDOM_SOURCES			16
 #define RANDOM_ELEMENTS			64
 
 typedef unsigned short rand_t;

kernel/config.h

@@ -57,7 +57,11 @@
  * the maximum needed by any given driver. The number of interrupt hooks may
  * be incremented on systems with many device drivers. 
  */
+#ifndef CONFIG_APIC
 #define NR_IRQ_HOOKS	  16		/* number of interrupt hooks */
+#else
+#define NR_IRQ_HOOKS	  64		/* number of interrupt hooks */
+#endif
 #define VDEVIO_BUF_SIZE   64		/* max elements per VDEVIO request */
 
 /* How many bytes for the kernel stack. Space allocated in mpx.s. */