86Box/src/win/win_new_floppy.c

/*
 * 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.
 *
 *		Handle the New Floppy Image dialog.
 *
 * Version:	@(#)win_new_floppy.c	1.0.10	2019/01/17
 *
 * Authors:	Miran Grca, <mgrca8@gmail.com>
 *
 *		Copyright 2016-2018 Miran Grca.
 */
#define UNICODE
#define BITMAP WINDOWS_BITMAP
#include <windows.h>
#include <windowsx.h>
#undef BITMAP
#include <commctrl.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <wchar.h>
#include "../86box.h"
#include "../plat.h"
#include "../random.h"
#include "../ui.h"
#include "../scsi/scsi_device.h"
#include "../disk/zip.h"
#include "win.h"


typedef struct {
	int hole;
	int sides;
	int data_rate;
	int encoding;
	int rpm;
	int tracks;
	int sectors;	/* For IMG and Japanese FDI only. */
	int sector_len;	/* For IMG and Japanese FDI only. */
	int media_desc;
	int spc;
	int num_fats;
	int spfat;
	int root_dir_entries;
} disk_size_t;


static const disk_size_t disk_sizes[14] = {	{	0,  1, 2, 1, 0,  40,  8, 2, 0xfe, 2, 2,  1, 112 },		/* 160k */
						{	0,  1, 2, 1, 0,  40,  9, 2, 0xfc, 2, 2,  1, 112 },		/* 180k */
						{	0,  2, 2, 1, 0,  40,  8, 2, 0xff, 2, 2,  1, 112 },		/* 320k */
						{	0,  2, 2, 1, 0,  40,  9, 2, 0xfd, 2, 2,  2, 112 },		/* 360k */
						{	0,  2, 2, 1, 0,  80,  8, 2, 0xfb, 2, 2,  2, 112 },		/* 640k */
						{	0,  2, 2, 1, 0,  80,  9, 2, 0xf9, 2, 2,  3, 112 },		/* 720k */
						{	1,  2, 0, 1, 1,  80, 15, 2, 0xf9, 1, 2,  7, 224 },		/* 1.2M */
						{	1,  2, 0, 1, 1,  77,  8, 3, 0xfe, 1, 2,  2, 192 },		/* 1.25M */
						{	1,  2, 0, 1, 0,  80, 18, 2, 0xf0, 1, 2,  9, 224 },		/* 1.44M */
						{	1,  2, 0, 1, 0,  80, 21, 2, 0xf0, 2, 2,  5,  16 },		/* DMF cluster 1024 */
						{	1,  2, 0, 1, 0,  80, 21, 2, 0xf0, 4, 2,  3,  16 },		/* DMF cluster 2048 */
						{	2,  2, 3, 1, 0,  80, 36, 2, 0xf0, 2, 2,  9, 240 },		/* 2.88M */
						{	0, 64, 0, 0, 0,  96, 32, 2,    0, 0, 0,  0,   0 },		/* ZIP 100 */
						{	0, 64, 0, 0, 0, 239, 32, 2,    0, 0, 0,  0,   0 }	};	/* ZIP 250 */

static unsigned char	*empty;


static int
create_86f(WCHAR *file_name, disk_size_t disk_size, uint8_t rpm_mode)
{
    FILE *f;

    uint32_t magic = 0x46423638;
    uint16_t version = 0x020C;
    uint16_t dflags = 0;
    uint16_t tflags = 0;
    uint32_t index_hole_pos = 0;
    uint32_t tarray[512];
    uint32_t array_size, array_size2;
    uint32_t track_base, track_size;
    int i;
    uint32_t shift = 0;

    dflags = 0;					/* Has surface data? - Assume no for now. */
    dflags |= (disk_size.hole << 1);		/* Hole */
    dflags |= ((disk_size.sides - 1) << 3);	/* Sides. */
    dflags |= (0 << 4);				/* Write protect? - Assume no for now. */
    dflags |= (rpm_mode << 5);			/* RPM mode. */
    dflags |= (0 << 7);				/* Has extra bit cells? - Assume no for now. */

    tflags = disk_size.data_rate;		/* Data rate. */
    tflags |= (disk_size.encoding << 3);	/* Encoding. */
    tflags |= (disk_size.rpm << 5);		/* RPM. */

    switch (disk_size.hole) {
	case 0:
	case 1:
	default:
		switch(rpm_mode) {
			case 1:
				array_size = 25250;
				break;
			case 2:
				array_size = 25374;
				break;
			case 3:
				array_size = 25750;
				break;
			default:
				array_size = 25000;
				break;
		}
		break;
	case 2:
		switch(rpm_mode) {
			case 1:
				array_size = 50500;
				break;
			case 2:
				array_size = 50750;
				break;
			case 3:
				array_size = 51000;
				break;
			default:
				array_size = 50000;
				break;
		}
		break;
    }

    array_size2 = (array_size << 3);
    array_size = (array_size2 >> 4) << 1;
    if (array_size2 & 15)
	array_size += 2;

    empty = (unsigned char *) malloc(array_size);

    memset(tarray, 0, 2048);
    memset(empty, 0, array_size);

    f = plat_fopen(file_name, L"wb");
    if (!f)
	return 0;

    fwrite(&magic, 4, 1, f);
    fwrite(&version, 2, 1, f);
    fwrite(&dflags, 2, 1, f);

    track_size = array_size + 6;

    track_base = 8 + ((disk_size.sides == 2) ? 2048 : 1024);

    if (disk_size.tracks <= 43)
	shift = 1;

    for (i = 0; i < (disk_size.tracks * disk_size.sides) << shift; i++)
	tarray[i] = track_base + (i * track_size);

    fwrite(tarray, 1, (disk_size.sides == 2) ? 2048 : 1024, f);

    for (i = 0; i < (disk_size.tracks * disk_size.sides) << shift; i++) {
	fwrite(&tflags, 2, 1, f);
	fwrite(&index_hole_pos, 4, 1, f);
	fwrite(empty, 1, array_size, f);
    }

    free(empty);

    fclose(f);

    return 1;
}


static int	is_zip;


static int
create_sector_image(WCHAR *file_name, disk_size_t disk_size, uint8_t is_fdi)
{
    FILE *f;
    uint32_t total_size = 0;
    uint32_t total_sectors = 0;
    uint32_t sector_bytes = 0;
    uint32_t root_dir_bytes = 0;
    uint32_t fat_size = 0;
    uint32_t fat1_offs = 0;
    uint32_t fat2_offs = 0;
    uint32_t zero_bytes = 0;
    uint16_t base = 0x1000;
    
    f = plat_fopen(file_name, L"wb");
    if (!f)
	return 0;

    sector_bytes = (128 << disk_size.sector_len);
    total_sectors = disk_size.sides * disk_size.tracks * disk_size.sectors;
    if (total_sectors > ZIP_SECTORS)
	total_sectors = ZIP_250_SECTORS;
    total_size = total_sectors * sector_bytes;
    root_dir_bytes = (disk_size.root_dir_entries << 5);
    fat_size = (disk_size.spfat * sector_bytes);
    fat1_offs = sector_bytes;
    fat2_offs = fat1_offs + fat_size;
    zero_bytes = fat2_offs + fat_size + root_dir_bytes;

    if (!is_zip && is_fdi) {
	empty = (unsigned char *) malloc(base);
	memset(empty, 0, base);

	*(uint32_t *) &(empty[0x08]) = (uint32_t) base;
	*(uint32_t *) &(empty[0x0C]) = total_size;
	*(uint16_t *) &(empty[0x10]) = (uint16_t) sector_bytes;
	*(uint8_t *)  &(empty[0x14]) = (uint8_t)  disk_size.sectors;
	*(uint8_t *)  &(empty[0x18]) = (uint8_t)  disk_size.sides;
	*(uint8_t *)  &(empty[0x1C]) = (uint8_t)  disk_size.tracks;

	fwrite(empty, 1, base, f);
	free(empty);
    }

    empty = (unsigned char *) malloc(total_size);
    memset(empty, 0x00, zero_bytes);

    if (!is_zip) {
	memset(empty + zero_bytes, 0xF6, total_size - zero_bytes);

	empty[0x00] = 0xEB;			/* Jump to make MS-DOS happy. */
	empty[0x01] = 0x58;
	empty[0x02] = 0x90;

	empty[0x03] = 0x38;			/* '86BOX5.0' OEM ID. */
	empty[0x04] = 0x36;
	empty[0x05] = 0x42;
	empty[0x06] = 0x4F;
	empty[0x07] = 0x58;
	empty[0x08] = 0x35;
	empty[0x09] = 0x2E;
	empty[0x0A] = 0x30;

	*(uint16_t *) &(empty[0x0B]) = (uint16_t) sector_bytes;
	*(uint8_t  *) &(empty[0x0D]) = (uint8_t)  disk_size.spc;
	*(uint16_t *) &(empty[0x0E]) = (uint16_t) 1;
	*(uint8_t  *) &(empty[0x10]) = (uint8_t)  disk_size.num_fats;
	*(uint16_t *) &(empty[0x11]) = (uint16_t) disk_size.root_dir_entries;
	*(uint16_t *) &(empty[0x13]) = (uint16_t) total_sectors;
	*(uint8_t *)  &(empty[0x15]) = (uint8_t)  disk_size.media_desc;
	*(uint16_t *) &(empty[0x16]) = (uint16_t) disk_size.spfat;
	*(uint8_t *)  &(empty[0x18]) = (uint8_t)  disk_size.sectors;
	*(uint8_t *)  &(empty[0x1A]) = (uint8_t)  disk_size.sides;

	empty[0x26] = 0x29;			/* ')' followed by randomly-generated volume serial number. */
	empty[0x27] = random_generate();
	empty[0x28] = random_generate();
	empty[0x29] = random_generate();
	empty[0x2A] = random_generate();

	memset(&(empty[0x2B]), 0x20, 11);

	empty[0x36] = 'F';
	empty[0x37] = 'A';
	empty[0x38] = 'T';
	empty[0x39] = '1';
	empty[0x3A] = '2';
	empty[0x3B] = ' ';
	empty[0x3C] = ' ';
	empty[0x3D] = ' ';

	empty[0x1FE] = 0x55;
	empty[0x1FF] = 0xAA;

	empty[fat1_offs + 0x00] = empty[fat2_offs + 0x00] = empty[0x15];
	empty[fat1_offs + 0x01] = empty[fat2_offs + 0x01] = 0xFF;
	empty[fat1_offs + 0x02] = empty[fat2_offs + 0x02] = 0xFF;
    }

    fwrite(empty, 1, total_size, f);
    free(empty);

    fclose(f);

    return 1;
}


static int
create_zip_sector_image(WCHAR *file_name, disk_size_t disk_size, uint8_t is_zdi, HWND hwnd)
{
    HWND h;
    FILE *f;
    uint32_t total_size = 0;
    uint32_t total_sectors = 0;
    uint32_t sector_bytes = 0;
    uint32_t root_dir_bytes = 0;
    uint32_t fat_size = 0;
    uint32_t fat1_offs = 0;
    uint32_t fat2_offs = 0;
    uint32_t zero_bytes = 0;
    uint16_t base = 0x1000;
    uint32_t pbar_max = 0;
    uint32_t i;
    
    f = plat_fopen(file_name, L"wb");
    if (!f)
	return 0;

    sector_bytes = (128 << disk_size.sector_len);
    total_sectors = disk_size.sides * disk_size.tracks * disk_size.sectors;
    if (total_sectors > ZIP_SECTORS)
	total_sectors = ZIP_250_SECTORS;
    total_size = total_sectors * sector_bytes;
    root_dir_bytes = (disk_size.root_dir_entries << 5);
    fat_size = (disk_size.spfat * sector_bytes);
    fat1_offs = sector_bytes;
    fat2_offs = fat1_offs + fat_size;
    zero_bytes = fat2_offs + fat_size + root_dir_bytes;

    pbar_max = total_size;
    if (is_zdi)
	pbar_max += base;
    pbar_max >>= 11;
    pbar_max--;

    h = GetDlgItem(hwnd, IDC_COMBO_RPM_MODE);
    EnableWindow(h, FALSE);
    ShowWindow(h, SW_HIDE);
    h = GetDlgItem(hwnd, IDT_1751);
    EnableWindow(h, FALSE);
    ShowWindow(h, SW_HIDE);
    h = GetDlgItem(hwnd, IDC_PBAR_IMG_CREATE);
    SendMessage(h, PBM_SETRANGE32, (WPARAM) 0, (LPARAM) pbar_max);
    SendMessage(h, PBM_SETPOS, (WPARAM) 0, (LPARAM) 0);
    EnableWindow(h, TRUE);
    ShowWindow(h, SW_SHOW);
    h = GetDlgItem(hwnd, IDT_1757);
    EnableWindow(h, TRUE);
    ShowWindow(h, SW_SHOW);

    h = GetDlgItem(hwnd, IDC_PBAR_IMG_CREATE);
    pbar_max++;

    if (is_zdi) {
	empty = (unsigned char *) malloc(base);
	memset(empty, 0, base);

	*(uint32_t *) &(empty[0x08]) = (uint32_t) base;
	*(uint32_t *) &(empty[0x0C]) = total_size;
	*(uint16_t *) &(empty[0x10]) = (uint16_t) sector_bytes;
	*(uint8_t *)  &(empty[0x14]) = (uint8_t)  disk_size.sectors;
	*(uint8_t *)  &(empty[0x18]) = (uint8_t)  disk_size.sides;
	*(uint8_t *)  &(empty[0x1C]) = (uint8_t)  disk_size.tracks;

	fwrite(empty, 1, 2048, f);
	SendMessage(h, PBM_SETPOS, (WPARAM) 1, (LPARAM) 0);

	fwrite(&empty[0x0800], 1, 2048, f);
	free(empty);

	SendMessage(h, PBM_SETPOS, (WPARAM) 2, (LPARAM) 0);
	pbar_max -= 2;
    }

    empty = (unsigned char *) malloc(total_size);
    memset(empty, 0x00, zero_bytes);

    if (total_sectors == ZIP_SECTORS) {
	/* ZIP 100 */
	/* MBR */
	*(uint64_t *) &(empty[0x0000]) = 0x0000030000025245LL;
	*(uint64_t *) &(empty[0x0008]) = 0x0000000000000000LL;
	*(uint64_t *) &(empty[0x0010]) = 0x0900E90300000100LL;
	*(uint64_t *) &(empty[0x0018]) = 0x726F70726F430100LL;
	*(uint64_t *) &(empty[0x0020]) = 0x202D206E6F697461LL;
	*(uint64_t *) &(empty[0x0028]) = 0x30392F33322F3131LL;

	*(uint64_t *) &(empty[0x01AE]) = 0x0116010100E905E2LL;
	*(uint64_t *) &(empty[0x01B6]) = 0x226BEDCE014E0135LL;
	*(uint64_t *) &(empty[0x01BE]) = 0x5E203F0600010180LL;
	*(uint64_t *) &(empty[0x01C6]) = 0x0002FE6000000020LL;

	*(uint16_t *) &(empty[0x01FE]) = 0xAA55;

	/* 4 sectors filled with 0xFA */
	memset(&(empty[0x0200]), 0xFA, 0x0800);

	/* Iomega_Reserved sector */
	*(uint64_t *) &(empty[0x0A00]) = 0x0500000000004D50LL;
	*(uint64_t *) &(empty[0x0A08]) = 0xAFF9010051060100LL;

	*(uint64_t *) &(empty[0x0A30]) = 0x525F6167656D6F49LL;
	*(uint64_t *) &(empty[0x0A38]) = 0x0064657672657365LL;

	*(uint64_t *) &(empty[0x0A54]) = 0x03000000AFF90100LL;

	/* 26 sectors filled with 0x48 */
	memset(&(empty[0x0C00]), 0x48, 0x3400);

	/* Boot sector */
	*(uint64_t *) &(empty[0x4000]) = 0x584F4236389058EBLL;
	*(uint64_t *) &(empty[0x4008]) = 0x0001040200302E35LL;
	*(uint64_t *) &(empty[0x4010]) = 0x00C0F80000020002LL;
	*(uint64_t *) &(empty[0x4018]) = 0x0000002000400020LL;
	*(uint32_t *) &(empty[0x4020]) = 0x0002FFE0;
	*(uint16_t *) &(empty[0x4024]) = 0x0080;

	empty[0x4026] = 0x29;			/* ')' followed by randomly-generated volume serial number. */
	empty[0x4027] = random_generate();
	empty[0x4028] = random_generate();
	empty[0x4029] = random_generate();
	empty[0x402A] = random_generate();

	memset(&(empty[0x402B]), 0x00, 0x000B);
	memset(&(empty[0x4036]), 0x20, 0x0008);

	empty[0x4036] = 'F';
	empty[0x4037] = 'A';
	empty[0x4038] = 'T';
	empty[0x4039] = '1';
	empty[0x403A] = '6';

	empty[0x41FE] = 0x55;
	empty[0x41FF] = 0xAA;

	empty[0x4200] = empty[0x1C200] = empty[0x4015];
	empty[0x4201] = empty[0x1C201] = 0xFF;
	empty[0x4202] = empty[0x1C202] = 0xFF;
	empty[0x4203] = empty[0x1C203] = 0xFF;

	/* Root directory = 0x34200
	   Data = 0x38200 */
    } else {
	/* ZIP 250 */
	/* MBR */
	*(uint64_t *) &(empty[0x0000]) = 0x2054524150492EEBLL;
	*(uint64_t *) &(empty[0x0008]) = 0x3930302065646F63LL;
	*(uint64_t *) &(empty[0x0010]) = 0x67656D6F49202D20LL;
	*(uint64_t *) &(empty[0x0018]) = 0x726F70726F432061LL;
	*(uint64_t *) &(empty[0x0020]) = 0x202D206E6F697461LL;
	*(uint64_t *) &(empty[0x0028]) = 0x30392F33322F3131LL;

	*(uint64_t *) &(empty[0x01AE]) = 0x0116010100E900E9LL;
	*(uint64_t *) &(empty[0x01B6]) = 0x2E32A7AC014E0135LL;

	*(uint64_t *) &(empty[0x01EE]) = 0xEE203F0600010180LL;
	*(uint64_t *) &(empty[0x01F6]) = 0x000777E000000020LL;
	*(uint16_t *) &(empty[0x01FE]) = 0xAA55;

	/* 31 sectors filled with 0x48 */
	memset(&(empty[0x0200]), 0x48, 0x3E00);

	/* The second sector begins with some strange data
	   in my reference image. */
	*(uint64_t *) &(empty[0x0200]) = 0x3831393230334409LL;
	*(uint64_t *) &(empty[0x0208]) = 0x6A57766964483130LL;
	*(uint64_t *) &(empty[0x0210]) = 0x3C3A34676063653FLL;
	*(uint64_t *) &(empty[0x0218]) = 0x586A56A8502C4161LL;
	*(uint64_t *) &(empty[0x0220]) = 0x6F2D702535673D6CLL;
	*(uint64_t *) &(empty[0x0228]) = 0x255421B8602D3456LL;
	*(uint64_t *) &(empty[0x0230]) = 0x577B22447B52603ELL;
	*(uint64_t *) &(empty[0x0238]) = 0x46412CC871396170LL;
	*(uint64_t *) &(empty[0x0240]) = 0x704F55237C5E2626LL;
	*(uint64_t *) &(empty[0x0248]) = 0x6C7932C87D5C3C20LL;
	*(uint64_t *) &(empty[0x0250]) = 0x2C50503E47543D6ELL;
	*(uint64_t *) &(empty[0x0258]) = 0x46394E807721536ALL;
	*(uint64_t *) &(empty[0x0260]) = 0x505823223F245325LL;
	*(uint64_t *) &(empty[0x0268]) = 0x365C79B0393B5B6ELL;

	/* Boot sector */
	*(uint64_t *) &(empty[0x4000]) = 0x584F4236389058EBLL;
	*(uint64_t *) &(empty[0x4008]) = 0x0001080200302E35LL;
	*(uint64_t *) &(empty[0x4010]) = 0x00EFF80000020002LL;
	*(uint64_t *) &(empty[0x4018]) = 0x0000002000400020LL;
	*(uint32_t *) &(empty[0x4020]) = 0x000777E0;
	*(uint16_t *) &(empty[0x4024]) = 0x0080;

	empty[0x4026] = 0x29;			/* ')' followed by randomly-generated volume serial number. */
	empty[0x4027] = random_generate();
	empty[0x4028] = random_generate();
	empty[0x4029] = random_generate();
	empty[0x402A] = random_generate();

	memset(&(empty[0x402B]), 0x00, 0x000B);
	memset(&(empty[0x4036]), 0x20, 0x0008);

	empty[0x4036] = 'F';
	empty[0x4037] = 'A';
	empty[0x4038] = 'T';
	empty[0x4039] = '1';
	empty[0x403A] = '6';

	empty[0x41FE] = 0x55;
	empty[0x41FF] = 0xAA;

	empty[0x4200] = empty[0x22000] = empty[0x4015];
	empty[0x4201] = empty[0x22001] = 0xFF;
	empty[0x4202] = empty[0x22002] = 0xFF;
	empty[0x4203] = empty[0x22003] = 0xFF;

	/* Root directory = 0x3FE00
	   Data = 0x38200 */
    }

    for (i = 0; i < pbar_max; i++) {
	fwrite(&empty[i << 11], 1, 2048, f);
	SendMessage(h, PBM_SETPOS, (WPARAM) i + 2, (LPARAM) 0);
    }

    free(empty);

    fclose(f);

    return 1;
}


static int	fdd_id, sb_part;

static int	file_type = 0;		/* 0 = IMG, 1 = Japanese FDI, 2 = 86F */
static wchar_t	fd_file_name[512];


/* Show a MessageBox dialog.  This is nasty, I know.  --FvK */
static int
new_floppy_msgbox(HWND hwnd, int type, void *arg)
{
    HWND h;
    int i;

    h = hwndMain;
    hwndMain = hwnd;

    i = ui_msgbox(type, arg);

    hwndMain = h;

    return(i);
}


#ifdef __amd64__
static LRESULT CALLBACK
#else
static BOOL CALLBACK
#endif
NewFloppyDialogProcedure(HWND hdlg, UINT message, WPARAM wParam, LPARAM lParam)
{
    HWND h;
    int i = 0;
    int wcs_len, ext_offs;
    wchar_t *ext;
    uint8_t disk_size, rpm_mode;
    int ret;
    FILE *f;
    int zip_types;
    wchar_t *twcs;

    switch (message) {
	case WM_INITDIALOG:
		plat_pause(1);
		memset(fd_file_name, 0, 512 * sizeof(wchar_t));
		h = GetDlgItem(hdlg, IDC_COMBO_DISK_SIZE);
		if (is_zip) {
			zip_types = zip_drives[fdd_id].is_250 ? 2 : 1;
			for (i = 0; i < zip_types; i++)
		                SendMessage(h, CB_ADDSTRING, 0, win_get_string(IDS_5900 + i));
		} else {
			for (i = 0; i < 12; i++)
		                SendMessage(h, CB_ADDSTRING, 0, win_get_string(IDS_5888 + i));
		}
                SendMessage(h, CB_SETCURSEL, 0, 0);
		EnableWindow(h, FALSE);
		h = GetDlgItem(hdlg, IDC_COMBO_RPM_MODE);
		for (i = 0; i < 4; i++)
	                SendMessage(h, CB_ADDSTRING, 0, win_get_string(IDS_6144 + i));
                SendMessage(h, CB_SETCURSEL, 0, 0);
		EnableWindow(h, FALSE);
		ShowWindow(h, SW_HIDE);
		h = GetDlgItem(hdlg, IDT_1751);
		EnableWindow(h, FALSE);
		ShowWindow(h, SW_HIDE);
		h = GetDlgItem(hdlg, IDOK);
		EnableWindow(h, FALSE);
		h = GetDlgItem(hdlg, IDC_PBAR_IMG_CREATE);
		EnableWindow(h, FALSE);
		ShowWindow(h, SW_HIDE);
		h = GetDlgItem(hdlg, IDT_1757);
		EnableWindow(h, FALSE);
		ShowWindow(h, SW_HIDE);
		break;

	case WM_COMMAND:
                switch (LOWORD(wParam)) {
			case IDOK:
				h = GetDlgItem(hdlg, IDC_COMBO_DISK_SIZE);
				disk_size = SendMessage(h, CB_GETCURSEL, 0, 0);
				if (is_zip)
					disk_size += 12;
				if (file_type == 2) {
					h = GetDlgItem(hdlg, IDC_COMBO_RPM_MODE);
					rpm_mode = SendMessage(h, CB_GETCURSEL, 0, 0);
					ret = create_86f(fd_file_name, disk_sizes[disk_size], rpm_mode);
				} else {
					if (is_zip)
						ret = create_zip_sector_image(fd_file_name, disk_sizes[disk_size], file_type, hdlg);
					else
						ret = create_sector_image(fd_file_name, disk_sizes[disk_size], file_type);
				}
				if (ret) {
					if (is_zip)
						ui_sb_mount_zip_img(fdd_id, sb_part, 0, fd_file_name);
					else
						ui_sb_mount_floppy_img(fdd_id, sb_part, 0, fd_file_name);
				} else {
					new_floppy_msgbox(hdlg, MBX_ERROR, (wchar_t *)IDS_4108);
					return TRUE;
				}
			case IDCANCEL:
				EndDialog(hdlg, 0);
				plat_pause(0);
				return TRUE;

			case IDC_CFILE:
	                        if (!file_dlg_w(hdlg, plat_get_string(is_zip ? IDS_2055 : IDS_2062), L"", 1)) {
					if (!wcschr(wopenfilestring, L'.')) {
						if (wcslen(wopenfilestring) && (wcslen(wopenfilestring) <= 256)) {
							twcs = &wopenfilestring[wcslen(wopenfilestring)];
							twcs[0] = L'.';
							if (!is_zip && (filterindex == 3)) {
								twcs[1] = L'8';
								twcs[2] = L'6';
								twcs[3] = L'f';
							} else {
								twcs[1] = L'i';
								twcs[2] = L'm';
								twcs[3] = L'g';
							}
						}
					}
					h = GetDlgItem(hdlg, IDC_EDIT_FILE_NAME);
					f = _wfopen(wopenfilestring, L"rb");
					if (f != NULL) {
						fclose(f);
						if (new_floppy_msgbox(hdlg, MBX_QUESTION, (wchar_t *)IDS_4111) != 0)	/* yes */
							return FALSE;
					}
					SendMessage(h, WM_SETTEXT, 0, (LPARAM) wopenfilestring);
					memset(fd_file_name, 0, sizeof(fd_file_name));
					wcscpy(fd_file_name, wopenfilestring);
					h = GetDlgItem(hdlg, IDC_COMBO_DISK_SIZE);
					if (!is_zip || zip_drives[fdd_id].is_250)
						EnableWindow(h, TRUE);
					wcs_len = wcslen(wopenfilestring);
					ext_offs = wcs_len - 4;
					ext = &(wopenfilestring[ext_offs]);
					if (is_zip) {
						if (((wcs_len >= 4) && !wcsicmp(ext, L".ZDI")))
							file_type = 1;
						else
							file_type = 0;
					} else {
						if (((wcs_len >= 4) && !wcsicmp(ext, L".FDI")))
							file_type = 1;
						else if ((((wcs_len >= 4) && !wcsicmp(ext, L".86F")) || (filterindex == 3)))
							file_type = 2;
						else
							file_type = 0;
					}
					h = GetDlgItem(hdlg, IDT_1751);
					if (file_type == 2) {
						EnableWindow(h, TRUE);
						ShowWindow(h, SW_SHOW);
					} else {
						EnableWindow(h, FALSE);
						ShowWindow(h, SW_HIDE);
					}
					h = GetDlgItem(hdlg, IDC_COMBO_RPM_MODE);
					if (file_type == 2) {
						EnableWindow(h, TRUE);
						ShowWindow(h, SW_SHOW);
					} else {
						EnableWindow(h, FALSE);
						ShowWindow(h, SW_HIDE);
					}
					h = GetDlgItem(hdlg, IDOK);
					EnableWindow(h, TRUE);
					return TRUE;
				} else
					return FALSE;

			default:
				break;
		}
		break;
    }

    return(FALSE);
}


void
NewFloppyDialogCreate(HWND hwnd, int id, int part)
{
    fdd_id = id & 0x7f;
    sb_part = part;
    is_zip = !!(id & 0x80);
    DialogBox(hinstance, (LPCTSTR)DLG_NEW_FLOPPY, hwnd, NewFloppyDialogProcedure);
}