Made the QDI FMB's PIIX no longer use MIRQ for the secondary IDE controller, makes the secondary IDE controller work.

src/chipset/intel_piix.c

@@ -1697,6 +1697,20 @@ const device_t piix_device = {
     .config        = NULL
 };
 
+const device_t piix_no_mirq_device = {
+    .name          = "Intel 82371FB (PIIX) (No MIRQ)",
+    .internal_name = "piix_no_mirq",
+    .flags         = DEVICE_PCI,
+    .local         = 0x122e1101,
+    .init          = piix_init,
+    .close         = piix_close,
+    .reset         = piix_reset,
+    { .available = NULL },
+    .speed_changed = piix_speed_changed,
+    .force_redraw  = NULL,
+    .config        = NULL
+};
+
 const device_t piix_rev02_device = {
     .name          = "Intel 82371FB (PIIX) (Faulty BusMastering!!)",
     .internal_name = "piix_rev02",

src/include/86box/chipset.h

@@ -91,6 +91,7 @@ extern const device_t sio_device;
 extern const device_t sio_zb_device;
 
 extern const device_t piix_device;
+extern const device_t piix_no_mirq_device;
 extern const device_t piix_old_device;
 extern const device_t piix_rev02_device;
 extern const device_t piix3_device;

src/machine/m_at_socket7_3v.c

@@ -287,7 +287,7 @@ machine_at_fmb_init(const machine_t *model)
     pci_register_slot(0x11, PCI_CARD_NORMAL, 4, 3, 2, 1);
 
     device_add(&i430fx_device);
-    device_add(&piix_device);
+    device_add(&piix_no_mirq_device);
     device_add(&keyboard_at_ami_device);
     device_add(&w83787f_device);
     device_add(&intel_flash_bxt_device);