A number of PCI fixes and P5MP3 corrections.

src/chipset/intel_4x0.c

@@ -350,6 +350,7 @@ i4x0_write(int func, int addr, uint8_t val, void *priv)
 		switch (dev->type) {
 			case INTEL_440LX: case INTEL_440EX:
 				regs[0x34] = (val & 0xa0);
+				break;
 		}
 		break;
 
@@ -912,7 +913,7 @@ i4x0_write(int func, int addr, uint8_t val, void *priv)
 		switch (dev->type) {
 			case INTEL_420TX: case INTEL_420ZX:
 			case INTEL_430LX: case INTEL_430NX:
-				regs[0x7c] = val & 0x32;
+				regs[0x7d] = val & 0x32;
 				break;
 		}
 	case 0x7e: case 0x7f:
@@ -1566,7 +1567,7 @@ static void
 	regs = (uint8_t *) dev->regs[1];
 
 	regs[0x00] = 0x86; regs[0x01] = 0x80;	/* Intel */
-   if(dev->type != INTEL_440GX){
+	if(dev->type != INTEL_440GX) {
 		regs[0x02] = 0x91; regs[0x03] = 0x71;	/* 82443BX */
 	} else {
 		regs[0x02] = 0xa1; regs[0x03] = 0x71; /* 82443GX (They seem to share the same deal*/

src/include/86box/pci.h

@@ -28,6 +28,7 @@
 #define PCI_COMMAND_MEM 0x02
 
 #define PCI_NO_IRQ_STEERING 0x8000
+#define PCI_CAN_SWITCH_TYPE 0x10000
 
 #define PCI_CONFIG_TYPE_1 1
 #define PCI_CONFIG_TYPE_2 2

src/machine/m_at_socket4_5.c

@@ -62,12 +62,12 @@ machine_at_excalibur_init(const machine_t *model)
 
 
 static void
-machine_at_premiere_common_init(const machine_t *model)
+machine_at_premiere_common_init(const machine_t *model, int pci_switch)
 {
     machine_at_common_init(model);
     device_add(&ide_pci_2ch_device);
 
-    pci_init(PCI_CONFIG_TYPE_2);
+    pci_init(PCI_CONFIG_TYPE_2 | pci_switch);
     pci_register_slot(0x00, PCI_CARD_NORTHBRIDGE, 0, 0, 0, 0);
     pci_register_slot(0x01, PCI_CARD_SPECIAL, 0, 0, 0, 0);
     pci_register_slot(0x06, PCI_CARD_NORMAL, 3, 2, 1, 4);
@@ -98,7 +98,6 @@ machine_at_award_common_init(const machine_t *model)
     pci_register_slot(0x02, PCI_CARD_SOUTHBRIDGE, 0, 0, 0, 0);
     device_add(&fdc_at_device);
     device_add(&keyboard_ps2_pci_device);
-    device_add(&sio_device);
 }
 
 
@@ -113,7 +112,7 @@ machine_at_batman_init(const machine_t *model)
     if (bios_only || !ret)
 	return ret;
 
-    machine_at_premiere_common_init(model);
+    machine_at_premiere_common_init(model, 0);
 
     device_add(&i430lx_device);
 
@@ -132,7 +131,7 @@ machine_at_ambradp60_init(const machine_t *model)
     if (bios_only || !ret)
 	return ret;
 
-    machine_at_premiere_common_init(model);
+    machine_at_premiere_common_init(model, 0);
 
     device_add(&i430lx_device);
 
@@ -152,7 +151,7 @@ machine_at_valuepointp60_init(const machine_t *model)
     if (bios_only || !ret)
 	return ret;
 
-    machine_at_premiere_common_init(model);
+    machine_at_premiere_common_init(model, 0);
 
     device_add(&i430lx_device);
 
@@ -172,8 +171,19 @@ machine_at_p5mp3_init(const machine_t *model)
     if (bios_only || !ret)
 	return ret;
 
-    machine_at_award_common_init(model);
+    machine_at_common_init(model);
+    device_add(&ide_pci_device);
 
+    pci_init(PCI_CONFIG_TYPE_2 | PCI_NO_IRQ_STEERING);
+    pci_register_slot(0x00, PCI_CARD_NORTHBRIDGE, 0, 0, 0, 0);
+    pci_register_slot(0x05, PCI_CARD_NORMAL, 1, 2, 3, 4);	/* 05 = Slot 1 */
+    pci_register_slot(0x04, PCI_CARD_NORMAL, 2, 3, 4, 1);	/* 04 = Slot 2 */
+    pci_register_slot(0x03, PCI_CARD_NORMAL, 3, 4, 1, 2);	/* 03 = Slot 3 */
+    pci_register_slot(0x02, PCI_CARD_SOUTHBRIDGE, 0, 0, 0, 0);
+    device_add(&fdc_at_device);
+    device_add(&keyboard_ps2_pci_device);
+
+    device_add(&sio_zb_device);
     device_add(&catalyst_flash_device);
     device_add(&i430lx_device);
 
@@ -194,6 +204,7 @@ machine_at_586mc1_init(const machine_t *model)
 
     machine_at_award_common_init(model);
 
+    device_add(&sio_device);
     device_add(&intel_flash_bxt_device);
     device_add(&i430lx_device);
 
@@ -212,7 +223,7 @@ machine_at_plato_init(const machine_t *model)
     if (bios_only || !ret)
 	return ret;
 
-    machine_at_premiere_common_init(model);
+    machine_at_premiere_common_init(model, PCI_CAN_SWITCH_TYPE);
 
     device_add(&i430nx_device);
 
@@ -231,7 +242,7 @@ machine_at_ambradp90_init(const machine_t *model)
     if (bios_only || !ret)
 	return ret;
 
-    machine_at_premiere_common_init(model);
+    machine_at_premiere_common_init(model, PCI_CAN_SWITCH_TYPE);
 
     device_add(&i430nx_device);
 
@@ -252,6 +263,7 @@ machine_at_430nx_init(const machine_t *model)
 
     machine_at_award_common_init(model);
 
+    device_add(&sio_device);
     device_add(&intel_flash_bxt_device);
     device_add(&i430nx_device);
 

src/pci.c

@@ -55,13 +55,14 @@ int			pci_burst_time,
 			pci_nonburst_time;
 
 static pci_card_t	pci_cards[32];
-static uint8_t		last_pci_card = 0;
+static uint8_t		pci_pmc = 0, last_pci_card = 0;
 static uint8_t		pci_card_to_slot_mapping[32];
 static uint8_t		elcr[2] = { 0, 0 };
 static uint8_t		pci_irqs[4], pci_irq_level[4];
 static uint64_t		pci_irq_hold[16];
 static pci_mirq_t	pci_mirqs[3];
 static int		pci_type,
+			pci_switch,
 			pci_index,
 			pci_func,
 			pci_card,
@@ -71,6 +72,9 @@ static int		pci_type,
 static int		trc_reg = 0, elcr_enabled = 1;
 
 
+static void		pci_reset_regs(void);
+
+
 #ifdef ENABLE_PCI_LOG
 int pci_do_log = ENABLE_PCI_LOG;
 
@@ -244,15 +248,39 @@ pci_type2_write(uint16_t port, uint8_t val, void *priv)
 	if (!pci_key && (val & 0xf0))
 		io_sethandler(0xc000, 0x1000,
 			      pci_type2_read, NULL, NULL,
-			      pci_type2_write, NULL, NULL, priv);
+			      pci_type2_write, NULL, NULL, NULL);
-	else
+	else if (pci_key && !(val & 0xf0))
 		io_removehandler(0xc000, 0x1000,
 				 pci_type2_read, NULL, NULL,
-				 pci_type2_write, NULL, NULL, priv);
+				 pci_type2_write, NULL, NULL, NULL);
 
 	pci_key = val & 0xf0;
-    } else if (port == 0xcfa) {
+    } else if (port == 0xcfa)
 	pci_bus = val;
+    else if (port == 0xcfb) {
+	pci_reset_regs();
+
+	if (!pci_pmc && (val & 0x01)) {
+		io_removehandler(0x0cf8, 1,
+				 pci_type2_read,NULL,NULL, pci_type2_write,NULL,NULL, NULL);
+		io_removehandler(0x0cfa, 1,
+				 pci_type2_read,NULL,NULL, pci_type2_write,NULL,NULL, NULL);
+		io_sethandler(0x0cf8, 1,
+			      NULL,NULL,pci_cf8_read, NULL,NULL,pci_cf8_write, NULL);
+		io_sethandler(0x0cfc, 4,
+			      pci_read,NULL,NULL, pci_write,NULL,NULL, NULL);
+	} else if (pci_pmc && !(val & 0x01)) {
+		io_removehandler(0x0cf8, 1,
+				 NULL,NULL,pci_cf8_read, NULL,NULL,pci_cf8_write, NULL);
+		io_removehandler(0x0cfc, 4,
+				 pci_read,NULL,NULL, pci_write,NULL,NULL, NULL);
+		io_sethandler(0x0cf8, 1,
+			      pci_type2_read,NULL,NULL, pci_type2_write,NULL,NULL, NULL);
+		io_sethandler(0x0cfa, 1,
+			      pci_type2_read,NULL,NULL, pci_type2_write,NULL,NULL, NULL);
+	}
+
+	pci_pmc = (val & 0x01);
     } else {
 	pci_card = (port >> 8) & 0xf;
 	pci_index = port & 0xff;
@@ -283,9 +311,10 @@ pci_type2_read(uint16_t port, void *priv)
 
     if (port == 0xcf8)
 	return pci_key | (pci_func << 1);
-
+    else if (port == 0xcfa)
-    if (port == 0xcfa)
 	return pci_bus;
+    else if (port == 0xcfb)
+	return pci_pmc;
 
     pci_card = (port >> 8) & 0xf;
     pci_index = port & 0xff;
@@ -612,11 +641,24 @@ pci_elcr_set_enabled(int enabled)
 }
 
 
-void
+static void
-pci_reset(void)
+pci_reset_regs(void)
+{
+    pci_index = pci_card = pci_func = pci_bus = pci_key = 0;
+
+    io_removehandler(0xc000, 0x1000,
+		     pci_type2_read, NULL, NULL,
+		     pci_type2_write, NULL, NULL, NULL);
+}
+
+
+static void
+pci_reset_hard(void)
 {
     int i;
 
+    pci_reset_regs();
+
     for (i = 0; i < 16; i++) {
 	if (pci_irq_hold[i]) {
 		pci_irq_hold[i] = 0;
@@ -629,6 +671,26 @@ pci_reset(void)
 }
 
 
+void
+pci_reset(void)
+{
+    if (pci_switch) {
+	pci_pmc = 0x00;
+
+	io_removehandler(0x0cf8, 1,
+			 NULL,NULL,pci_cf8_read, NULL,NULL,pci_cf8_write, NULL);
+	io_removehandler(0x0cfc, 4,
+			 pci_read,NULL,NULL, pci_write,NULL,NULL, NULL);
+	io_sethandler(0x0cf8, 1,
+		      pci_type2_read,NULL,NULL, pci_type2_write,NULL,NULL, NULL);
+	io_sethandler(0x0cfa, 1,
+		      pci_type2_read,NULL,NULL, pci_type2_write,NULL,NULL, NULL);
+    }
+
+    pci_reset_hard();
+}
+
+
 static void
 pci_slots_clear(void)
 {
@@ -741,11 +803,19 @@ pci_init(int type)
 
     pci_slots_clear();
 
-    pci_reset();
+    pci_reset_hard();
 
     trc_init();
 
     pci_type = type;
+    pci_switch = !!(type & PCI_CAN_SWITCH_TYPE);
+
+    if (pci_switch) {
+	pci_pmc = 0x00;
+
+	io_sethandler(0x0cfb, 1,
+		      pci_type2_read,NULL,NULL, pci_type2_write,NULL,NULL, NULL);
+    }
 
     if (!(type & PCI_NO_IRQ_STEERING)) {
 	io_sethandler(0x04d0, 0x0002,