Finally got rid of the AT and PCI global variables.

src/86box.c

@@ -1039,12 +1039,6 @@ pc_reset_hard_init(void)
 	if (postcard_enabled)
 		device_add(&postcard_device);
 
-	/* Reset the CPU module. */
-	resetx86();
-	dma_reset();
-	pic_reset();
-	cpu_cache_int_enabled = cpu_cache_ext_enabled = 0;
-
 	atfullspeed = 0;
 	pc_full_speed();