diff --git a/src/config.c b/src/config.c
index 65d0cd2e4..e1d0ad6d4 100644
--- a/src/config.c
+++ b/src/config.c
@@ -47,6 +47,7 @@
 #include <86box/hdc_ide.h>
 #include <86box/fdd.h>
 #include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 #include <86box/gameport.h>
 #include <86box/machine.h>
 #include <86box/mouse.h>
@@ -783,6 +784,12 @@ load_other_peripherals(void)
       else
 	scsi_card_current = 0;
 
+    p = config_get_string(cat, "fdc", NULL);
+    if (p != NULL)
+	fdc_type = fdc_card_get_from_internal_name(p);
+      else
+	fdc_type = FDC_INTERNAL;
+
     p = config_get_string(cat, "hdc", NULL);
     if (p == NULL) {
 	if (machines[machine].flags & MACHINE_HDC) {
@@ -1744,6 +1751,12 @@ save_other_peripherals(void)
 	config_set_string(cat, "scsicard",
 			  scsi_card_get_internal_name(scsi_card_current));
 
+    if (fdc_type == FDC_INTERNAL)
+	config_delete_var(cat, "fdc");
+      else
+	config_set_string(cat, "fdc",
+			  fdc_card_get_internal_name(fdc_type));
+
     config_set_string(cat, "hdc",
 	hdc_get_internal_name(hdc_current));
 
diff --git a/src/cpu/cpu_table.c b/src/cpu/cpu_table.c
index 82f99b3ab..71df19605 100644
--- a/src/cpu/cpu_table.c
+++ b/src/cpu/cpu_table.c
@@ -186,6 +186,7 @@ CPU cpus_i386DX[] = {
     {"",             -1,                   0, 0,      0, 0, 0, 0, 0,0,0,0, 0}
 };
 
+
 CPU cpus_Am386SX[] = {
     /*Am386SX*/
     {"Am386SX/16",   CPU_386SX, fpus_80386,     16000000, 1, 0x2308, 0, 0, 0, 3,3,3,3, 2},
diff --git a/src/floppy/fdc.c b/src/floppy/fdc.c
index 66e665f76..189f3d678 100644
--- a/src/floppy/fdc.c
+++ b/src/floppy/fdc.c
@@ -35,6 +35,7 @@
 #include <86box/ui.h>
 #include <86box/fdd.h>
 #include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 
 
 extern uint64_t motoron[FDD_NUM];
@@ -89,6 +90,9 @@ int lastbyte=0;
 int floppymodified[4];
 int floppyrate[4];
 
+
+int fdc_type = 0;
+
 #ifdef ENABLE_FDC_LOG
 int fdc_do_log = ENABLE_FDC_LOG;
 
@@ -110,6 +114,85 @@ fdc_log(const char *fmt, ...)
 #endif
 
 
+typedef const struct {
+    const char		*name;
+    const char  *internal_name;
+    const device_t    *device;
+} fdc_cards_t;
+
+/* All emulated machines have at least one integrated FDC controller */
+static fdc_cards_t fdc_cards[] = {
+    { "Internal controller", 	"internal",	NULL,				},
+    { "DTK PII-151B",		"dtk_pii151b",	&fdc_pii151b_device,		},
+    { "DTK PII-158B",		"dtk_pii158b",	&fdc_pii158b_device,		},
+    { "",			"",		NULL,				},
+};
+
+int
+fdc_card_available(int card)
+{
+    if (fdc_cards[card].device)
+	return(device_available(fdc_cards[card].device));
+
+    return(1);
+}
+
+
+char *
+fdc_card_getname(int card)
+{
+    return((char *) fdc_cards[card].name);
+}
+
+
+const device_t *
+fdc_card_getdevice(int card)
+{
+    return(fdc_cards[card].device);
+}
+
+
+int
+fdc_card_has_config(int card)
+{
+    if (! fdc_cards[card].device) return(0);
+
+    return(fdc_cards[card].device->config ? 1 : 0);
+}
+
+
+char *
+fdc_card_get_internal_name(int card)
+{
+    return((char *) fdc_cards[card].internal_name);
+}
+
+
+int
+fdc_card_get_from_internal_name(char *s)
+{
+    int c = 0;
+
+    while (strlen((char *) fdc_cards[c].internal_name)) {
+	if (!strcmp((char *) fdc_cards[c].internal_name, s))
+		return(c);
+	c++;
+    }
+	
+    return(0);
+}
+
+
+void
+fdc_card_init(void)
+{
+    if (!fdc_cards[fdc_type].device)
+	return;
+
+    device_add(fdc_cards[fdc_type].device);
+}
+
+
 uint8_t
 fdc_get_current_drive(void)
 {
@@ -2138,7 +2221,6 @@ fdc_init(const device_t *info)
     memset(fdc, 0, sizeof(fdc_t));
 
     fdc->flags = info->local;
-    fdc_reset(fdc);
 
     fdc->irq = 6;
 
@@ -2271,3 +2353,13 @@ const device_t fdc_at_nsc_device = {
     fdc_reset,
     NULL, NULL, NULL
 };
+
+const device_t fdc_dp8473_device = {
+    "NS DP8473 Floppy Drive Controller",
+    0,
+    FDC_FLAG_NSDP,
+    fdc_init,
+    fdc_close, 
+    fdc_reset,
+    NULL, NULL, NULL
+};
diff --git a/src/floppy/fdc_pii15xb.c b/src/floppy/fdc_pii15xb.c
new file mode 100644
index 000000000..55dd55460
--- /dev/null
+++ b/src/floppy/fdc_pii15xb.c
@@ -0,0 +1,208 @@
+/*
+ * VARCem	Virtual ARchaeological Computer EMulator.
+ *		An emulator of (mostly) x86-based PC systems and devices,
+ *		using the ISA,EISA,VLB,MCA  and PCI system buses, roughly
+ *		spanning the era between 1981 and 1995.
+ *
+ *		This file is part of the VARCem Project.
+ *
+ *		Implementation of the DTK PII-151B and PII-158B cards.
+ *
+ *		These are DP8473-based floppy controller ISA cards for XT
+ *		class systems, and allow usage of standard and high-density
+ *		drives on them. They have their own BIOS which takes over
+ *		from the standard system BIOS.
+ *
+ * Author:	Fred N. van Kempen, <decwiz@yahoo.com>
+ *
+ *		Copyright 2019 Fred N. van Kempen.
+ *
+ *		Redistribution and  use  in source  and binary forms, with
+ *		or  without modification, are permitted  provided that the
+ *		following conditions are met:
+ *
+ *		1. Redistributions of  source  code must retain the entire
+ *		   above notice, this list of conditions and the following
+ *		   disclaimer.
+ *
+ *		2. Redistributions in binary form must reproduce the above
+ *		   copyright  notice,  this list  of  conditions  and  the
+ *		   following disclaimer in  the documentation and/or other
+ *		   materials provided with the distribution.
+ *
+ *		3. Neither the  name of the copyright holder nor the names
+ *		   of  its  contributors may be used to endorse or promote
+ *		   products  derived from  this  software without specific
+ *		   prior written permission.
+ *
+ * THIS SOFTWARE  IS  PROVIDED BY THE  COPYRIGHT  HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND  ANY EXPRESS  OR  IMPLIED  WARRANTIES,  INCLUDING, BUT  NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE  ARE  DISCLAIMED. IN  NO  EVENT  SHALL THE COPYRIGHT
+ * HOLDER OR  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL,  EXEMPLARY,  OR  CONSEQUENTIAL  DAMAGES  (INCLUDING,  BUT  NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE  GOODS OR SERVICES;  LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  AND ON  ANY
+ * THEORY OF  LIABILITY, WHETHER IN  CONTRACT, STRICT  LIABILITY, OR  TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING  IN ANY  WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#define _LARGEFILE_SOURCE
+#define _LARGEFILE64_SOURCE
+#define _GNU_SOURCE
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <wchar.h>
+#define HAVE_STDARG_H
+#include <86box/86box.h>
+#include <86box/device.h>
+#include <86box/io.h>
+#include <86box/mem.h>
+#include <86box/pic.h>
+#include <86box/rom.h>
+#include <86box/machine.h>
+#include <86box/timer.h>
+#include <86box/plat.h>
+#include <86box/ui.h>
+#include <86box/fdd.h>
+#include <86box/fdc.h>
+#include <86box/fdc_ext.h>
+
+#define ROM_PII_151B	L"roms/floppy/dtk/pii-151b.rom"
+#define ROM_PII_158B	L"roms/floppy/dtk/pii-158b.rom"
+
+typedef struct {
+    const char	*name;
+    int		type;
+
+    uint32_t	bios_addr,
+		bios_size;
+    rom_t	bios_rom;
+    
+    fdc_t 	*fdc;
+} pii_t;
+
+
+/* Load and enable a BIOS ROM if we have one, and is enabled. */
+static void
+set_bios(pii_t *dev, wchar_t *fn)
+{
+    uint32_t temp;
+    FILE *fp;
+
+    /* Only do this if needed. */
+    if ((fn == NULL) || (dev->bios_addr == 0)) return;
+
+    if ((fp = rom_fopen(fn, L"rb")) == NULL) return;
+
+    (void)fseek(fp, 0L, SEEK_END);
+    temp = ftell(fp);
+    (void)fclose(fp);
+
+    /* Assume 128K, then go down. */
+    dev->bios_size = 0x020000;
+    while (temp < dev->bios_size)
+	dev->bios_size >>= 1;
+
+    /* Create a memory mapping for the space. */
+    rom_init(&dev->bios_rom, fn, dev->bios_addr,
+	     dev->bios_size, dev->bios_size-1, 0, MEM_MAPPING_EXTERNAL);
+}
+
+
+static void
+pii_close(void *priv)
+{
+    pii_t *dev = (pii_t *)priv;
+
+    free(dev);
+}
+
+
+static void *
+pii_init(const device_t *info)
+{
+    pii_t *dev;
+
+    dev = (pii_t *)malloc(sizeof(pii_t));
+    memset(dev, 0x00, sizeof(pii_t));
+    dev->type = info->local;
+
+    dev->bios_addr = device_get_config_hex20("bios_addr");
+
+    if (dev->bios_addr != 0x000000) {
+	switch (dev->type) {
+	    case 151:
+		set_bios(dev, ROM_PII_151B);
+		break;
+	    case 158:
+		set_bios(dev, ROM_PII_158B);
+		break;
+	}
+    }
+
+    /* Attach the DP8473 chip. */
+    dev->fdc = device_add(&fdc_at_device);
+
+    //pclog("FDC: %s (I/O=%04X, flags=%08x)\n",
+    //	info->name, dev->fdc->base_address, dev->fdc->flags);
+
+    return(dev);
+}
+
+static int pii_151b_available(void)
+{
+    return rom_present(ROM_PII_151B);
+}
+
+static int pii_158_available(void)
+{
+    return rom_present(ROM_PII_158B);
+}
+
+static const device_config_t pii_config[] = {
+    {
+	"bios_addr", "BIOS address", CONFIG_HEX20, "", 0x0ce000,
+	{
+		{
+			"Disabled", 0
+		},
+		{
+			"CA00H", 0x0ca000
+		},
+		{
+			"CC00H", 0x0cc000
+		},
+		{
+			"CE00H", 0x0ce000
+		},
+		{
+			""
+		}
+	}
+    },
+    {
+	"", "", -1
+    }
+};
+
+const device_t fdc_pii151b_device = {
+    "DTK PII-151B (MiniMicro) Floppy Drive Controller",
+    DEVICE_ISA,
+    151,
+    pii_init, pii_close, NULL,
+    pii_151b_available, NULL, NULL,
+    pii_config
+};
+
+const device_t fdc_pii158b_device = {
+    "DTK PII-158B (MiniMicro4) Floppy Drive Controller",
+    DEVICE_ISA,
+    158,
+    pii_init, pii_close, NULL,
+    pii_158_available, NULL, NULL,
+    pii_config
+};
diff --git a/src/include/86box/config.h b/src/include/86box/config.h
index 969bc2489..1a82a0879 100644
--- a/src/include/86box/config.h
+++ b/src/include/86box/config.h
@@ -117,7 +117,8 @@ typedef struct {
 			parallel_enabled[3];		/* LPT1, LPT2, LPT3 enabled */
 
     /* Other peripherals category */
-    int			hdc,				/* Hard disk controller */
+    int			fdc_type,			/* Floppy disk controller type */
+			hdc,				/* Hard disk controller */
 			scsi_card,			/* SCSI controller */
 			ide_ter_enabled,		/* Tertiary IDE controller enabled */
 			ide_qua_enabled,		/* Quaternary IDE controller enabled */
diff --git a/src/include/86box/fdc.h b/src/include/86box/fdc.h
index cae83896a..56249069b 100644
--- a/src/include/86box/fdc.h
+++ b/src/include/86box/fdc.h
@@ -22,6 +22,7 @@
 #ifndef EMU_FDC_H
 # define EMU_FDC_H
 
+extern int fdc_type;
 
 #define FDC_FLAG_PCJR		0x01	/* PCjr */
 #define FDC_FLAG_DISKCHG_ACTLOW	0x02	/* Amstrad, PS/1, PS/2 ISA */
@@ -33,6 +34,7 @@
 #define FDC_FLAG_NSC		0x80	/* PC87306, PC87309 */
 #define FDC_FLAG_TOSHIBA	0x100	/* T1000, T1200 */
 #define FDC_FLAG_AMSTRAD	0x200	/* Non-AT Amstrad machines */
+#define FDC_FLAG_NSDP		0x400   /* DP8473N, DP8473V */
 
 
 typedef struct {
@@ -178,7 +180,7 @@ extern const device_t	fdc_at_ps1_device;
 extern const device_t	fdc_at_smc_device;
 extern const device_t	fdc_at_winbond_device;
 extern const device_t	fdc_at_nsc_device;
+extern const device_t   fdc_dp8473_device;
 #endif
 
-
 #endif	/*EMU_FDC_H*/
diff --git a/src/include/86box/fdc_ext.h b/src/include/86box/fdc_ext.h
new file mode 100644
index 000000000..1e10e4b7a
--- /dev/null
+++ b/src/include/86box/fdc_ext.h
@@ -0,0 +1,42 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Implementation of the NEC uPD-765 and compatible floppy disk
+ *		controller.
+ *
+ *
+ *
+ * Authors:	Sarah Walker, <tommowalker@tommowalker.co.uk>
+ *		Miran Grca, <mgrca8@gmail.com>
+ *		Fred N. van Kempen, <decwiz@yahoo.com>
+ *
+ *		Copyright 2008-2020 Sarah Walker.
+ *		Copyright 2016-2020 Miran Grca.
+ *		Copyright 2018-2020 Fred N. van Kempen.
+ */
+#ifndef EMU_FDC_EXT_H
+# define EMU_FDC_EXT_H
+
+extern int fdc_type;
+
+/* Controller types. */
+#define FDC_INTERNAL		0
+
+extern const device_t fdc_pii151b_device;
+extern const device_t fdc_pii158b_device;
+
+extern void fdc_card_init(void);
+
+extern char *fdc_card_getname(int card);
+extern char *fdc_card_get_internal_name(int card);
+extern int fdc_card_get_from_internal_name(char *s);
+extern const device_t *fdc_card_getdevice(int card);
+extern int fdc_card_has_config(int card);
+extern int fdc_card_available(int card);
+
+#endif	/*EMU_FDC_H*/
diff --git a/src/include/86box/language.h b/src/include/86box/language.h
index b95f692f7..d5a6d9b8f 100644
--- a/src/include/86box/language.h
+++ b/src/include/86box/language.h
@@ -91,6 +91,7 @@
 #define IDS_2115	2115		// "MO %i (%03i): %ls"
 #define IDS_2116	2116		// "MO images (*.IM?)\0*.IM..."
 #define IDS_2117	2117		// "Welcome to 86Box!"
+#define IDS_2118	2118		// "Internal controller"
 
 #define IDS_4096	4096		// "Hard disk (%s)"
 #define IDS_4097	4097		// "%01i:%01i"
@@ -169,7 +170,7 @@
 
 #define IDS_LANG_ENUS	IDS_7168
 
-#define STR_NUM_2048	70
+#define STR_NUM_2048	71
 #define STR_NUM_3072	11
 #define STR_NUM_4096	18
 #define STR_NUM_4352	7
diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index 1d91905f9..98e1ad1d3 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -40,6 +40,7 @@
 #define MACHINE_MOUSE		0x008000	/* sys has int mouse */
 #define MACHINE_SOUND		0x010000	/* sys has int sound */
 #define MACHINE_NONMI		0x020000	/* sys does not have NMI's */
+#define MACHINE_FDC		0x040000	/* sys has int FDC */
 #else
 #define MACHINE_PC		0x000000	/* PC architecture */
 #define MACHINE_AT		0x000001	/* PC/AT architecture */
@@ -57,6 +58,7 @@
 #define MACHINE_MOUSE		0x008000	/* sys has int mouse */
 #define MACHINE_SOUND		0x010000	/* sys has int sound */
 #define MACHINE_NONMI		0x020000	/* sys does not have NMI's */
+#define MACHINE_FDC		0x040000	/* sys has int FDC */
 #endif
 
 #define IS_ARCH(m, a)		(machines[(m)].flags & (a)) ? 1 : 0;
diff --git a/src/include/86box/resource.h b/src/include/86box/resource.h
index 7c225fe00..afcb33e5b 100644
--- a/src/include/86box/resource.h
+++ b/src/include/86box/resource.h
@@ -99,6 +99,7 @@
 #define IDT_1765		1765	/* Board #3: */
 #define IDT_1766		1766	/* Board #4: */
 #define IDT_1767		1767	/* ISA RTC: */
+#define IDT_1768		1768	/* Ext FD Controller: */
 
 
 /*
@@ -180,6 +181,8 @@
 #define IDC_CHECK_POSTCARD	1130
 #define IDC_COMBO_ISARTC	1131
 #define IDC_CONFIGURE_ISARTC	1132
+#define IDC_COMBO_FDC		1133
+#define IDC_CONFIGURE_FDC	1134
 #define IDC_GROUP_ISAMEM	1140
 #define IDC_COMBO_ISAMEM_1	1141
 #define IDC_COMBO_ISAMEM_2	1142
diff --git a/src/include/86box/scsi_x54x.h b/src/include/86box/scsi_x54x.h
index 175fdfe6c..6c8164902 100644
--- a/src/include/86box/scsi_x54x.h
+++ b/src/include/86box/scsi_x54x.h
@@ -423,7 +423,7 @@ typedef struct {
 		PendingInterrupt, Lock,
 		target_data_len, pad0;
 
-    uint32_t	Base, rom_addr,			/* address of BIOS ROM */
+    uint32_t	Base, fdc_address, rom_addr,			/* address of BIOS ROM */
 		CmdParamLeft, Outgoing,
 		transfer_size;
 
@@ -486,6 +486,8 @@ typedef struct {
     pc_timer_t	timer, ResetCB;
 
     Req_t	Req;
+    
+    fdc_t	*fdc;
 } x54x_t;
 
 
diff --git a/src/machine/m_at.c b/src/machine/m_at.c
index 90f4fc40c..7adc98ecd 100644
--- a/src/machine/m_at.c
+++ b/src/machine/m_at.c
@@ -49,6 +49,7 @@
 #include <86box/device.h>
 #include <86box/fdd.h>
 #include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 #include <86box/nvr.h>
 #include <86box/gameport.h>
 #include <86box/keyboard.h>
@@ -102,7 +103,8 @@ machine_at_ibm_common_init(const machine_t *model)
 
     mem_remap_top(384);
 
-    device_add(&fdc_at_device);
+    if (fdc_type == FDC_INTERNAL)
+	device_add(&fdc_at_device);
 }
 
 
diff --git a/src/machine/m_at_compaq.c b/src/machine/m_at_compaq.c
index 7cd3f254e..aed26a6f6 100644
--- a/src/machine/m_at_compaq.c
+++ b/src/machine/m_at_compaq.c
@@ -33,6 +33,7 @@
 #include <86box/device.h>
 #include <86box/fdd.h>
 #include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 #include <86box/hdc.h>
 #include <86box/hdc_ide.h>
 #include <86box/machine.h>
@@ -45,7 +46,8 @@ enum
 {
     COMPAQ_PORTABLEII = 0,
     COMPAQ_PORTABLEIII,
-    COMPAQ_PORTABLEIII386
+    COMPAQ_PORTABLEIII386,
+    COMPAQ_DESKPRO386
 };
 
 #define CGA_RGB 0
@@ -809,9 +811,11 @@ machine_at_compaq_init(const machine_t *model, int type)
 {
     machine_at_init(model);
 
-    mem_remap_top(384);
+    if (type != COMPAQ_DESKPRO386)
+	mem_remap_top(384);
 	
-    device_add(&fdc_at_device);
+    if (fdc_type == FDC_INTERNAL)	
+	device_add(&fdc_at_device);
 
     mem_mapping_add(&ram_mapping, 0xfa0000, 0x60000,
                     read_ram, read_ramw, read_raml,
@@ -833,6 +837,11 @@ machine_at_compaq_init(const machine_t *model, int type)
 		if (gfxcard == VID_INTERNAL)
 			device_add(&compaq_plasma_device);
 		break;
+
+	case COMPAQ_DESKPRO386:
+		if (hdc_current == 1)
+			device_add(&ide_isa_device);
+		break;
     }
 }
 
diff --git a/src/machine/m_tandy.c b/src/machine/m_tandy.c
index 3fee77bba..26777dc77 100644
--- a/src/machine/m_tandy.c
+++ b/src/machine/m_tandy.c
@@ -35,6 +35,7 @@
 #include <86box/nvr.h>
 #include <86box/fdd.h>
 #include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 #include <86box/gameport.h>
 #include <86box/keyboard.h>
 #include <86box/sound.h>
@@ -1495,7 +1496,8 @@ machine_tandy1k_init(const machine_t *model, int type)
     device_add(&keyboard_tandy_device);
     keyboard_set_table(scancode_tandy);
 
-    device_add(&fdc_xt_device);
+    if (fdc_type == FDC_INTERNAL)	
+	device_add(&fdc_xt_device);
 
     switch(type) {
 	case TYPE_TANDY:
@@ -1524,6 +1526,7 @@ machine_tandy1k_init(const machine_t *model, int type)
 		device_add_ex(&vid_device_sl, dev);
 		device_add(&pssj_device);
 		device_add(&eep_1000sl2_device);
+		break;
     }
 
     if (joystick_type != JOYSTICK_TYPE_NONE)
diff --git a/src/machine/m_xt.c b/src/machine/m_xt.c
index 3fb30eab6..2f55040e6 100644
--- a/src/machine/m_xt.c
+++ b/src/machine/m_xt.c
@@ -10,6 +10,7 @@
 #include <86box/device.h>
 #include <86box/fdd.h>
 #include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 #include <86box/gameport.h>
 #include <86box/ibm_5161.h>
 #include <86box/keyboard.h>
@@ -24,7 +25,9 @@ machine_xt_common_init(const machine_t *model)
 
     pit_ctr_set_out_func(&pit->counters[1], pit_refresh_timer_xt);
 
-    device_add(&fdc_xt_device);
+    if (fdc_type == FDC_INTERNAL)	
+	device_add(&fdc_xt_device);
+    
     nmi_init();
     if (joystick_type != JOYSTICK_TYPE_NONE)
 	device_add(&gameport_device);
diff --git a/src/machine/m_xt_compaq.c b/src/machine/m_xt_compaq.c
index 575500ffb..1b84a10de 100644
--- a/src/machine/m_xt_compaq.c
+++ b/src/machine/m_xt_compaq.c
@@ -31,6 +31,7 @@
 #include <86box/device.h>
 #include <86box/fdd.h>
 #include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 #include <86box/gameport.h>
 #include <86box/keyboard.h>
 #include <86box/lpt.h>
@@ -53,7 +54,8 @@ machine_xt_compaq_init(const machine_t *model)
     pit_ctr_set_out_func(&pit->counters[1], pit_refresh_timer_xt);
 
     device_add(&keyboard_xt_compaq_device);
-    device_add(&fdc_xt_device);
+    if (fdc_type == FDC_INTERNAL)
+	device_add(&fdc_xt_device);
     nmi_init();
     if (joystick_type != JOYSTICK_TYPE_NONE)
 	device_add(&gameport_device);
diff --git a/src/machine/m_xt_zenith.c b/src/machine/m_xt_zenith.c
index 0d527d20b..c0448bd09 100644
--- a/src/machine/m_xt_zenith.c
+++ b/src/machine/m_xt_zenith.c
@@ -36,6 +36,7 @@
 #include <86box/device.h>
 #include <86box/fdd.h>
 #include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 #include <86box/gameport.h>
 #include <86box/keyboard.h>
 #include <86box/lpt.h>
@@ -116,8 +117,10 @@ machine_xt_zenith_init(const machine_t *model)
 	return ret;
 
     machine_common_init(model);
-
-    device_add(&fdc_xt_device);
+ 
+    if (fdc_type == FDC_INTERNAL)
+	device_add(&fdc_xt_device);
+    
     lpt1_remove();	/* only one parallel port */
     lpt2_remove();
     lpt1_init(0x278);
diff --git a/src/pc.c b/src/pc.c
index e720cf529..6b1d57ce0 100644
--- a/src/pc.c
+++ b/src/pc.c
@@ -59,6 +59,7 @@
 #include <86box/gameport.h>
 #include <86box/fdd.h>
 #include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 #include <86box/hdd.h>
 #include <86box/hdc.h>
 #include <86box/hdc_ide.h>
@@ -747,6 +748,8 @@ pc_reset_hard_init(void)
 	
     /* Reset any ISA RTC cards. */
     isartc_reset();	
+
+    fdc_card_init();	
 	
     fdd_reset();
 
diff --git a/src/scsi/scsi_aha154x.c b/src/scsi/scsi_aha154x.c
index e8342ad90..8e50864e1 100644
--- a/src/scsi/scsi_aha154x.c
+++ b/src/scsi/scsi_aha154x.c
@@ -36,6 +36,8 @@
 #include <86box/dma.h>
 #include <86box/pic.h>
 #include <86box/plat.h>
+#include <86box/fdd.h>
+#include <86box/fdc.h>
 #include <86box/scsi.h>
 #include <86box/scsi_aha154x.h>
 #include <86box/scsi_x54x.h>
@@ -187,6 +189,13 @@ aha154x_eeprom(x54x_t *dev, uint8_t cmd,uint8_t arg,uint8_t len,uint8_t off,uint
 	r = 0;
 
 	aha_eeprom_save(dev);
+		
+	if (dev->type == AHA_154xCF) {
+		if (dev->fdc_address > 0) {
+			fdc_remove(dev->fdc);
+			fdc_set_base(dev->fdc, dev->fdc_address);
+		}
+	}
     }
 
     if (cmd == 0x23) {
@@ -702,6 +711,8 @@ aha_initnvr(x54x_t *dev)
     /* Initialize the on-board EEPROM. */
     dev->nvr[0] = dev->HostID;			/* SCSI ID 7 */
     dev->nvr[0] |= (0x10 | 0x20 | 0x40);
+    if (dev->fdc_address == 0x370)
+	dev->nvr[0] |= EE0_ALTFLOP;
     dev->nvr[1] = dev->Irq-9;			/* IRQ15 */
     dev->nvr[1] |= (dev->DmaChannel<<4);	/* DMA6 */
     dev->nvr[2] = (EE2_HABIOS	| 		/* BIOS enabled		*/
@@ -757,6 +768,10 @@ aha_init(const device_t *info)
     dev->Irq = device_get_config_int("irq");
     dev->DmaChannel = device_get_config_int("dma");
     dev->rom_addr = device_get_config_hex20("bios_addr");
+    if (!(dev->bus & DEVICE_MCA))
+	dev->fdc_address = device_get_config_hex16("fdc_addr");
+    else
+	dev->fdc_address = 0;
     dev->HostID = 7;		/* default HA ID */
     dev->setup_info_len = sizeof(aha_setup_t);
     dev->max_id = 7;
@@ -834,6 +849,8 @@ aha_init(const device_t *info)
 		dev->ven_get_irq = aha_get_irq;		/* function to return IRQ from EEPROM */
 		dev->ven_get_dma = aha_get_dma;		/* function to return DMA channel from EEPROM */
 		dev->ha_bps = 10000000.0;	/* fast SCSI */
+		if (dev->fdc_address > 0)
+			dev->fdc = device_add(&fdc_at_device);
 		break;
 
 	case AHA_154xCP:
@@ -1022,7 +1039,6 @@ static const device_config_t aha_154xb_config[] = {
 	}
 };
 
-
 static const device_config_t aha_154x_config[] = {
         {
 		"base", "Address", CONFIG_HEX16, "", 0x334,
@@ -1122,6 +1138,122 @@ static const device_config_t aha_154x_config[] = {
 };
 
 
+static const device_config_t aha_154xcf_config[] = {
+        {
+		"base", "Address", CONFIG_HEX16, "", 0x334,
+                {
+                        {
+                                "None",      0
+                        },
+                        {
+                                "0x330", 0x330
+                        },
+                        {
+                                "0x334", 0x334
+                        },
+                        {
+                                "0x230", 0x230
+                        },
+                        {
+                                "0x234", 0x234
+                        },
+                        {
+                                "0x130", 0x130
+                        },
+                        {
+                                "0x134", 0x134
+                        },
+                        {
+                                ""
+                        }
+                },
+        },
+        {
+		"irq", "IRQ", CONFIG_SELECTION, "", 9,
+                {
+                        {
+                                "IRQ 9", 9
+                        },
+                        {
+                                "IRQ 10", 10
+                        },
+                        {
+                                "IRQ 11", 11
+                        },
+                        {
+                                "IRQ 12", 12
+                        },
+                        {
+                                "IRQ 14", 14
+                        },
+                        {
+                                "IRQ 15", 15
+                        },
+                        {
+                                ""
+                        }
+                },
+        },
+        {
+		"dma", "DMA channel", CONFIG_SELECTION, "", 6,
+                {
+                        {
+                                "DMA 5", 5
+                        },
+                        {
+                                "DMA 6", 6
+                        },
+                        {
+                                "DMA 7", 7
+                        },
+                        {
+                                ""
+                        }
+                },
+        },
+        {
+                "bios_addr", "BIOS Address", CONFIG_HEX20, "", 0,
+                {
+                        {
+                                "Disabled", 0
+                        },
+                        {
+                                "C800H", 0xc8000
+                        },
+                        {
+                                "D000H", 0xd0000
+                        },
+                        {
+                                "D800H", 0xd8000
+                        },
+                        {
+                                ""
+                        }
+                },
+        },
+        {
+		"fdc_addr", "FDC address", CONFIG_HEX16, "", 0,
+                {
+                        {
+                                "None",      0
+                        },
+                        {
+                                "0x3f0", 0x3f0
+                        },
+                        {
+                                "0x370", 0x370
+                        },
+                        {
+                                ""
+                        }
+                },
+        },
+	{
+		"", "", -1
+	}
+};
+
+
 const device_t aha154xa_device = {
     "Adaptec AHA-154xA",
     DEVICE_ISA | DEVICE_AT,
@@ -1155,7 +1287,7 @@ const device_t aha154xcf_device = {
     AHA_154xCF,
     aha_init, x54x_close, NULL,
     NULL, NULL, NULL,
-    aha_154x_config
+    aha_154xcf_config
 };
 
 const device_t aha1640_device = {
diff --git a/src/scsi/scsi_buslogic.c b/src/scsi/scsi_buslogic.c
index 71529ef32..a3e7b6161 100644
--- a/src/scsi/scsi_buslogic.c
+++ b/src/scsi/scsi_buslogic.c
@@ -37,6 +37,8 @@
 #include <86box/device.h>
 #include <86box/nvr.h>
 #include <86box/dma.h>
+#include <86box/fdd.h>
+#include <86box/fdc.h>
 #include <86box/pic.h>
 #include <86box/pci.h>
 #include <86box/plat.h>
diff --git a/src/scsi/scsi_x54x.c b/src/scsi/scsi_x54x.c
index 0f301abdf..a3e8d2f0d 100644
--- a/src/scsi/scsi_x54x.c
+++ b/src/scsi/scsi_x54x.c
@@ -38,6 +38,8 @@
 #include <86box/mem.h>
 #include <86box/rom.h>
 #include <86box/device.h>
+#include <86box/fdd.h>
+#include <86box/fdc.h>
 #include <86box/nvr.h>
 #include <86box/plat.h>
 #include <86box/scsi.h>
diff --git a/src/win/86Box.rc b/src/win/86Box.rc
index 9370caf34..4ca9269a6 100644
--- a/src/win/86Box.rc
+++ b/src/win/86Box.rc
@@ -551,7 +551,12 @@ BEGIN
     LTEXT           "#4:",IDT_1766,12,172,21,10
     COMBOBOX        IDC_COMBO_ISAMEM_4,25,171,190,120,
                     CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
-    PUSHBUTTON      "Configure",IDC_CONFIGURE_ISAMEM_4,217,171,38,12				
+    PUSHBUTTON      "Configure",IDC_CONFIGURE_ISAMEM_4,217,171,38,12
+	
+    LTEXT           "FDC Controller:",IDT_1768,7,190,48,10
+    COMBOBOX        IDC_COMBO_FDC,64,189,155,120,CBS_DROPDOWNLIST | 
+                    WS_VSCROLL | WS_TABSTOP
+    PUSHBUTTON      "Configure",IDC_CONFIGURE_FDC,217,189,38,12
 END
 
 DLG_CFG_HARD_DISKS DIALOG DISCARDABLE  97, 0, 267, 154
@@ -963,6 +968,7 @@ BEGIN
     IDS_2115	"MO %i (%03i): %ls"
     IDS_2116	"MO images (*.IM?)\0*.IM?\0All files (*.*)\0*.*\0"
     IDS_2117	"Welcome to 86Box!"
+	IDS_2118	"Internal controller"
 END
 
 STRINGTABLE DISCARDABLE 
diff --git a/src/win/Makefile.mingw b/src/win/Makefile.mingw
index 7511ba61c..3d48ac37a 100644
--- a/src/win/Makefile.mingw
+++ b/src/win/Makefile.mingw
@@ -598,7 +598,8 @@ SIOOBJ		:= sio_acc3221.o \
 		    sio_w83877f.o sio_w83977f.o \
 		    sio_um8669f.o
 
-FDDOBJ		:= fdd.o fdc.o fdi2raw.o \
+FDDOBJ		:= fdd.o fdc.o fdc_pii15xb.o \
+		   fdi2raw.o \
 		   fdd_common.o fdd_86f.o \
 		   fdd_fdi.o fdd_imd.o fdd_img.o fdd_json.o \
 		   fdd_mfm.o fdd_td0.o
diff --git a/src/win/win_settings.c b/src/win/win_settings.c
index cf3304427..3ddd0dffb 100644
--- a/src/win/win_settings.c
+++ b/src/win/win_settings.c
@@ -52,6 +52,8 @@
 #include <86box/hdc_ide.h>
 #include <86box/zip.h>
 #include <86box/fdd.h>
+#include <86box/fdc.h>
+#include <86box/fdc_ext.h>
 #include <86box/network.h>
 #include <86box/sound.h>
 #include <86box/midi.h>
@@ -95,7 +97,7 @@ static int temp_lpt_devices[3];
 static int temp_serial[2], temp_lpt[3];
 
 /* Other peripherals category */
-static int temp_hdc, temp_scsi_card, temp_ide_ter, temp_ide_qua;
+static int temp_fdc_card, temp_hdc, temp_scsi_card, temp_ide_ter, temp_ide_qua;
 static int temp_bugger;
 static int temp_postcard;
 static int temp_isartc;
@@ -123,6 +125,7 @@ extern int is486;
 static int listtomachinetype[256], machinetypetolist[256];
 static int listtomachine[256], machinetolist[256];
 static int settings_device_to_list[2][20], settings_list_to_device[2][20];
+static int settings_fdc_to_list[2][20], settings_list_to_fdc[2][20];
 static int settings_midi_to_list[20], settings_list_to_midi[20];
 static int settings_midi_in_to_list[20], settings_list_to_midi_in[20];
 
@@ -247,6 +250,7 @@ win_settings_init(void)
 
     /* Other peripherals category */
     temp_scsi_card = scsi_card_current;
+    temp_fdc_card = fdc_type;
     temp_hdc = hdc_current;
     temp_ide_ter = ide_ter_enabled;
     temp_ide_qua = ide_qua_enabled;
@@ -356,6 +360,7 @@ win_settings_changed(void)
 
     /* Peripherals category */
     i = i || (scsi_card_current != temp_scsi_card);
+    i = i || (fdc_type != temp_fdc_card);
     i = i || (hdc_current != temp_hdc);
     i = i || (temp_ide_ter != ide_ter_enabled);
     i = i || (temp_ide_qua != ide_qua_enabled);
@@ -462,6 +467,7 @@ win_settings_save(void)
     /* Peripherals category */
     scsi_card_current = temp_scsi_card;
     hdc_current = temp_hdc;
+    fdc_type = temp_fdc_card;
     ide_ter_enabled = temp_ide_ter;
     ide_qua_enabled = temp_ide_qua;
     bugger_enabled = temp_bugger;
@@ -1584,7 +1590,6 @@ win_settings_ports_proc(HWND hdlg, UINT message, WPARAM wParam, LPARAM lParam)
     return FALSE;
 }
 
-
 static void
 recalc_hdc_list(HWND hdlg)
 {
@@ -1641,6 +1646,7 @@ win_settings_peripherals_proc(HWND hdlg, UINT message, WPARAM wParam, LPARAM lPa
     char *stransi;
     const device_t *scsi_dev;
     const device_t *dev;
+    const device_t *fdc_dev;
     char *s;
 
     switch (message) {
@@ -1657,6 +1663,43 @@ win_settings_peripherals_proc(HWND hdlg, UINT message, WPARAM wParam, LPARAM lPa
 		else
 			EnableWindow(h, FALSE);
 
+
+		/*FD controller config*/
+		h = GetDlgItem(hdlg, IDC_COMBO_FDC);
+		c = d = 0;
+		while (1) {
+			char *s = fdc_card_getname(c);
+
+			if (!s[0])
+				break;
+
+			settings_fdc_to_list[0][c] = d;			
+
+			if (fdc_card_available(c)) {
+				fdc_dev = fdc_card_getdevice(c);
+
+				if (device_is_valid(fdc_dev, machines[temp_machine].flags)) {
+					if (c == 0)
+						SendMessage(h, CB_ADDSTRING, 0, win_get_string(IDS_2118));
+					else {
+						mbstowcs(lptsTemp, s, strlen(s) + 1);
+						SendMessage(h, CB_ADDSTRING, 0, (LPARAM) lptsTemp);
+					}
+					settings_list_to_fdc[0][d] = c;
+					d++;
+				}
+			}
+
+			c++;
+		}
+		SendMessage(h, CB_SETCURSEL, settings_fdc_to_list[0][temp_fdc_card], 0);
+
+		EnableWindow(h, d ? TRUE : FALSE);
+
+		h = GetDlgItem(hdlg, IDC_CONFIGURE_FDC);
+		EnableWindow(h, fdc_card_has_config(temp_fdc_card) ? TRUE : FALSE);
+
+
 		/*SCSI config*/
 		h = GetDlgItem(hdlg, IDC_COMBO_SCSI);
 		c = d = 0;
@@ -1776,6 +1819,24 @@ win_settings_peripherals_proc(HWND hdlg, UINT message, WPARAM wParam, LPARAM lPa
 
 	case WM_COMMAND:
                	switch (LOWORD(wParam)) {
+			case IDC_CONFIGURE_FDC:
+				h = GetDlgItem(hdlg, IDC_COMBO_FDC);
+				temp_fdc_card = settings_list_to_fdc[0][SendMessage(h, CB_GETCURSEL, 0, 0)];
+
+				temp_deviceconfig |= deviceconfig_open(hdlg, (void *)fdc_card_getdevice(temp_fdc_card));
+				break;
+
+			case IDC_COMBO_FDC:
+				h = GetDlgItem(hdlg, IDC_COMBO_FDC);
+				temp_fdc_card = settings_list_to_fdc[0][SendMessage(h, CB_GETCURSEL, 0, 0)];
+
+				h = GetDlgItem(hdlg, IDC_CONFIGURE_FDC);
+				if (fdc_card_has_config(temp_fdc_card))
+					EnableWindow(h, TRUE);
+				else
+					EnableWindow(h, FALSE);
+				break;		
+			
 			case IDC_CONFIGURE_HDC:
 				lptsTemp = (LPTSTR) malloc(512 * sizeof(WCHAR));
 				stransi = (char *) malloc(512);
@@ -1903,6 +1964,9 @@ win_settings_peripherals_proc(HWND hdlg, UINT message, WPARAM wParam, LPARAM lPa
 		wcstombs(stransi, lptsTemp, 512);
 		temp_hdc = hdc_get_id(stransi);
 
+		h = GetDlgItem(hdlg, IDC_COMBO_FDC);
+		temp_fdc_card = settings_list_to_fdc[0][SendMessage(h, CB_GETCURSEL, 0, 0)];
+
 		h = GetDlgItem(hdlg, IDC_COMBO_SCSI);
 		temp_scsi_card = settings_list_to_device[0][SendMessage(h, CB_GETCURSEL, 0, 0)];