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DiskImages.js
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DiskImages.js
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// Copyright 2015 by Paulo Augusto Peccin. See license.txt distributed with this file.
wmsx.DiskImages = function(room) {
"use strict";
var self = this;
this.connect = function(pDiskDriveSocket) {
diskDriveSocket = pDiskDriveSocket;
};
// Image must be formatted with FAT12/16 and empty
// Each file must have properties: "name", "content", "lastModifiedDate", "isDir" (in that case, also "items")
this.writeFilesToImage = function (image, rootDirItems) {
// console.log(rootDirItems);
// Check for partitioned disk (MBR signature, first Primary Partition starts at sector 1)
var mbrSig = image[0x01fe] | (image[0x01ff] << 8);
var partType = image[0x01c2];
var partStartSector = image[0x01c6] | (image[0x01c7] << 8) | (image[0x01c8] << 16) | (image[0x01c9] << 24) ;
var bpb = 0;
if (mbrSig === 0xaa55 && partStartSector === 1) bpb = this.BYTES_PER_SECTOR;
// Get data from BPB
var bytesPerSector = image[bpb + 0x0b] | (image[bpb + 0x0c] << 8);
var sectorsPerCluster = image[bpb + 0x0d];
var reservedSectors = image[bpb + 0x0e] | (image[bpb + 0x0f] << 8);
var numberOfFATs = image[bpb + 0x10];
var rootDirMaxEntries = image[bpb + 0x11] | (image[bpb + 0x12] << 8);
var totalSecSmall = image[bpb + 0x13] | (image[bpb + 0x14] << 8);
var mediaDescriptor = image[bpb + 0x15];
var sectorsPerFAT = image[bpb + 0x16] | (image[bpb + 0x17] << 8);
var totalSecLarge = image[bpb + 0x20] | (image[bpb + 0x21] << 8) | (image[bpb + 0x22] << 16) | (image[bpb + 0x23] << 24);
var totalSectors = totalSecSmall || totalSecLarge;
var bytesPerDirEntry = 32;
var fatStartSector = partStartSector + reservedSectors;
var rootDirStartSector = fatStartSector + (numberOfFATs * sectorsPerFAT);
var rootDirContentPosition = rootDirStartSector * bytesPerSector;
var dataStartSector = rootDirStartSector + (bytesPerDirEntry * rootDirMaxEntries) / bytesPerSector;
var dataContentPosition = dataStartSector * bytesPerSector;
var bytesPerCluster = sectorsPerCluster * bytesPerSector;
var totalDataClusters = ((totalSectors - (dataStartSector - partStartSector)) / sectorsPerCluster) | 0;
var totalDataBytes = totalDataClusters * sectorsPerCluster * bytesPerSector;
var mediaDescriptorFAT = image[fatStartSector * bytesPerSector];
var fatDepthSig = String.fromCharCode(image[bpb + 0x36], image[bpb + 0x37], image[bpb + 0x38], image[bpb + 0x39], image[bpb + 0x3a], image[bpb + 0x3b], image[bpb + 0x3c], image[bpb + 0x3d]);
var fat16 = fatDepthSig === "FAT16 " ? true : fatDepthSig === "FAT12 " ? false : totalDataClusters >= 0xff0;
// console.log("bpb", bpb, "fatDepthSig", fatDepthSig, "fat16", fat16, "mediaDescriptor", mediaDescriptor, "mediaDescriptorFAT", mediaDescriptorFAT, "bytesPerSector", bytesPerSector, "fatStartSector", fatStartSector, "rootDirStartSector", rootDirStartSector, "rootDirMaxEntries", rootDirMaxEntries, "dataStartSector", dataStartSector, "sectorsPerCluster", sectorsPerCluster, "sectorsPerFAT", sectorsPerFAT, "totalDataClusters", totalDataClusters, "bytesPerCluster", bytesPerCluster, "totalDataBytes", totalDataBytes);
// Valid BPB and FAT partition? (MediaType is ok, totalDataClusters >= 64)
if (!(mediaDescriptor === mediaDescriptorFAT && (mediaDescriptor === 0xf0 || mediaDescriptor >= 0xf8) && totalDataClusters >= 64)) {
// Try pre-determined DPB geometry for floppy formats (MediaType from FAT)
var preMediaTypeInfo = this.MEDIA_TYPE_INFO[mediaDescriptorFAT];
if (preMediaTypeInfo && preMediaTypeInfo.size === image.length) {
var dpb = this.MEDIA_TYPE_DPB[mediaDescriptorFAT];
bytesPerSector = (dpb[2] << 8) + dpb[1];
sectorsPerCluster = dpb[5] + 1;
fatStartSector = (dpb[8] << 8) + dpb[7];
numberOfFATs = dpb[9];
rootDirMaxEntries = dpb[10];
dataStartSector = (dpb[12] << 8) + dpb[11];
totalDataClusters = ((dpb[14] << 8) + dpb[13]) - 1;
sectorsPerFAT = dpb[15];
rootDirStartSector = (dpb[17] << 8) + dpb[16];
bytesPerCluster = sectorsPerCluster * bytesPerSector;
fat16 = false;
} else {
var err = new Error("Could not write files: Current Disk format not recognized (unformatted?)");
err.wmsx = true;
throw err;
}
}
// Get info about free clusters
var info = getFreeClustersInfo();
var remainFreeClusters = info.quant;
var maxCluster = info.max;
var freeCluster = info.first;
// Disk full?
if (remainFreeClusters === 0) {
err = new Error("Could not write files: Disk full");
err.wmsx = true;
throw err;
}
// Begin process
var itemsWritten = 0, itemsNotWritten = 0;
var dateNOW = new Date();
// Write root entries, including sub-directories recursively up to available space
writeRootDir(rootDirItems);
// If there were items that could not be written, AND no items could be written, error
if (itemsNotWritten > 0 && itemsWritten === 0) {
err = new Error("No files could fit in available Disk space");
err.wmsx = true;
throw err;
}
// Finish image and return
this.mirrorFatCopies(numberOfFATs, fatStartSector, sectorsPerFAT, bytesPerSector, image);
return itemsNotWritten > 0
? "" + itemsWritten + " of " + (itemsWritten + itemsNotWritten) + " files"
: "" + itemsWritten + (itemsWritten === 1 ? " file" : " files");
// Auxiliary functions
function writeRootDir(rootDirItems) {
// Define root dir properties
var rootDir = {
name: "ROOT",
lastModifiedDate: dateNOW,
isDir: true,
items: rootDirItems,
content: image.slice(rootDirContentPosition, rootDirContentPosition + rootDirMaxEntries * bytesPerDirEntry),
nextFreeEntry: 0,
continuousContentPosition: rootDirContentPosition, // does not reside in data clusters
clusterChain: [0] // Dummy
};
setRootDirAvailableEntries(rootDir);
setRootDirUsedNames(rootDir);
// Position directories first, but prioritize files if space is not enough for all
var availEntries = rootDir.availableEntries.length;
var files = rootDir.items.filter(function (i) {
return !i.isDir;
});
if (files.length > availEntries) files.length = availEntries;
availEntries -= files.length;
var subDirs = rootDir.items.filter(function (i) {
return i.isDir;
});
if (subDirs.length > availEntries) subDirs.length = availEntries;
// Write files up to available space
rootDir.nextFreeEntry = subDirs.length;
writeFileItems(rootDir, files);
// Write subDirs recursively up to available space
rootDir.nextFreeEntry = 0;
writeSubDirItems(rootDir, subDirs);
// Finish
finishDirEntries(rootDir);
writeFinishedContent(rootDir);
}
function writeSubDir(dir) {
// Write . and .. entries
writeDirEntry(dir, { name: ".", specialName: true, lastModifiedDate: dir.lastModifiedDate, isDir: true, clusterChain: dir.clusterChain });
writeDirEntry(dir, { name: "..", specialName: true, lastModifiedDate: dir.lastModifiedDate, isDir: true, clusterChain: dir.parentDir.clusterChain });
// Position directories first, but prioritize files if space is not enough for all
var availEntries = dir.items.length + 2; // +2 for . and ..
var files = dir.items.filter(function (i) {
return !i.isDir;
});
if (files.length > availEntries) files.length = availEntries;
availEntries -= files.length;
var subDirs = dir.items.filter(function (i) {
return i.isDir;
});
if (subDirs.length > availEntries) subDirs.length = availEntries;
// Write files up to available space
dir.nextFreeEntry = 2 + subDirs.length;
writeFileItems(dir, files);
// Write subDirs recursively up to available space
dir.nextFreeEntry = 2;
writeSubDirItems(dir, subDirs);
// Finish content and write
finishDirEntries(dir);
writeFinishedContent(dir);
}
function writeSubDirItems(ownerDir, subDirs) {
// Write each subDir until disk is full
for (var d = 0; d < subDirs.length; ++d) {
var subDir = subDirs[d];
var neededClusters = clustersTaken((subDir.items.length + 2) * bytesPerDirEntry); // +2 for . and ..
// Check if subDir fits in the remaining space
if (neededClusters > remainFreeClusters) {
++itemsNotWritten;
continue;
}
// Define subDir properties
subDir.content = wmsx.Util.arrayFill(new Array(neededClusters * bytesPerCluster), 0);
subDir.parentDir = ownerDir;
subDir.usedNames = new Set();
subDir.nextFreeEntry = 0;
// Use space
setClusterChain(subDir);
writeDirEntry(ownerDir, subDir);
// Write items of this subdirectory, recursively
writeSubDir(subDir);
++itemsWritten;
}
}
function writeFileItems(ownerDir, files) {
// Write each file until disk is full
for (var f = 0; f < files.length; ++f) {
var file = files[f];
var neededClusters = clustersTaken(file.content.length);
// Check if file fits in the remaining space
if (neededClusters > remainFreeClusters) {
++itemsNotWritten;
continue;
}
// Use space and write content
setClusterChain(file);
writeDirEntry(ownerDir, file);
writeFinishedContent(file);
++itemsWritten;
}
}
function writeDirEntry(dir, item) {
var dirContent = dir.content;
var entryPos = (dir.availableEntries ? dir.availableEntries[dir.nextFreeEntry] : dir.nextFreeEntry) * bytesPerDirEntry;
// File Name
var name = fat12Filename(item, dir.usedNames);
for (var c = 0; c < 11; ++c) dirContent[entryPos + c] = name.charCodeAt(c);
// Attributes. "Archive" set
var attrs = item.isDir ? 0x10 : 0x20; // Set "Dir" or "Archive"
dirContent[entryPos + 0x0b] = attrs;
// Attributes. "Archive" set
var pos = entryPos + 0x16;
var d = item.lastModified ? new Date(item.lastModified) : item.lastModifiedDate || dateNOW; // lastModifiedDate deprecated?
var time = encodeTime(d);
dirContent[pos] = time & 255; dirContent[pos + 1] = time >> 8;
var date = encodeDate(d);
dirContent[pos + 2] = date & 255; dirContent[pos + 3] = date >> 8;
// Starting Cluster
pos = entryPos + 0x1a;
dirContent[pos] = item.clusterChain[0] & 255; dirContent[pos + 1] = item.clusterChain[0] >> 8;
// File Size
pos = entryPos + 0x1c;
var size = item.isDir ? 0 : item.content.length;
dirContent[pos] = size & 255; dirContent[pos + 1] = (size >> 8) & 255; dirContent[pos + 2] = (size >> 16) & 255; dirContent[pos + 3] = (size >> 24) & 255;
// Advance pointer to next available entry
dir.nextFreeEntry++;
}
function setRootDirAvailableEntries(dir) {
var content = dir.content;
var avail = dir.availableEntries = [];
for (var pos = 0, e = 0, len = content.length; pos < len; pos += bytesPerDirEntry, ++e)
if (content[pos] === 0 || content[pos] === 0xe5) avail.push(e);
}
function setRootDirUsedNames(dir) {
var content = dir.content;
var used = dir.usedNames = new Set();
for (var pos = 0, e = 0, len = content.length; pos < len; pos += bytesPerDirEntry, ++e)
if (content[pos] !== 0 && content[pos] !== 0xe5) {
var name = "";
for (var c = 0; c < 11; ++c) name += String.fromCharCode(content[pos + c]);
used.add(name);
}
}
function finishDirEntries(dir) {
var content = dir.content;
var foundUsed = false;
for (var pos = content.length - bytesPerDirEntry; pos >= 0; pos -= bytesPerDirEntry)
if (foundUsed) {
if (content[pos] === 0) content[pos] = 0xe5; // mark as "available in between used entries"
} else
if (content[pos] !== 0) foundUsed = true;
}
function writeFinishedContent(item) {
var content = item.content;
var dest = item.continuousContentPosition;
if (dest) {
for (var b = 0, len = content.length; b < len; ++b) image[dest + b] = content[b];
} else {
var src = 0;
var clusterChain = item.clusterChain;
for (var c = 0, cLen = clusterChain.length; c < cLen; ++c) {
dest = clusterContentPositon(clusterChain[c]);
for (var end = dest + bytesPerCluster; dest < end; ++dest) image[dest] = content[src++];
}
}
}
function writeFatEntry(entry, value) {
var pos;
if (fat16) {
pos = fatStartSector * bytesPerSector + (entry << 1); // Each entry takes 2 bytes
image[pos] = value & 255;
image[pos + 1] = (value & 0xff00) >> 8;
} else {
pos = fatStartSector * bytesPerSector + (entry >> 1) * 3; // Each 2 entries take 3 bytes
if (entry & 1) {
// odd entry
image[pos + 1] = (image[pos + 1] & 0x0f) | ((value & 0x0f) << 4);
image[pos + 2] = (value & 0xff0) >> 4;
} else {
// even entry
image[pos] = value & 255;
image[pos + 1] = (image[pos + 1] & 0xf0) | ((value & 0xf00) >> 8);
}
}
}
function readFatEntry(entry) {
var pos;
if (fat16) {
pos = fatStartSector * bytesPerSector + (entry << 1); // Each entry takes 2 bytes
return image[pos] | (image[pos + 1] << 8)
} else {
pos = fatStartSector * bytesPerSector + (entry >> 1) * 3; // Each 2 entries take 3 bytes
if (entry & 1)
// odd entry
return (image[pos + 1] >> 4) | (image[pos + 2] << 4);
else
// even entry
return image[pos] | ((image[pos + 1] & 0x0f) << 8);
}
}
function getFreeClustersInfo() {
var maxCluster = totalDataClusters + 2 - 1; // Usable clusters start at 2
var firstFreeCluster = -1;
var quantFreeClusters = 0;
for (var c = 2; c <= maxCluster; ++c) {
var val = readFatEntry(c);
if (val === 0) {
++quantFreeClusters;
if (firstFreeCluster < 0) firstFreeCluster = c;
}
}
return { first: firstFreeCluster, quant: quantFreeClusters, max: maxCluster };
}
function setClusterChain(item) {
var quant = clustersTaken(item.content.length);
item.clusterChain = new Array(quant);
if (quant === 0)
item.clusterChain[0] = 0;
else {
for (var c = 0; c < quant; ++c) {
var cluster = freeCluster;
item.clusterChain[c] = cluster;
advanceFreeCluster();
writeFatEntry(cluster, freeCluster); // next in chain
}
writeFatEntry(cluster, 0xffff); // end of chain
}
}
function advanceFreeCluster() {
--remainFreeClusters;
while(readFatEntry(++freeCluster) !== 0);
}
function clustersTaken(size) {
return Math.ceil(size / bytesPerCluster);
}
function clusterContentPositon(cluster) {
return dataContentPosition + (cluster - 2) * bytesPerCluster;
}
function fat12Filename(item, usedNames) {
if (item.specialName) return (item.name + " ").substr(0, 11);
var finalName;
var name = sanitizeName(wmsx.Util.leafFilenameNoExtension(item.name));
var ext = sanitizeName(wmsx.Util.leafFilenameOnlyExtension(item.name));
ext = (ext + " ").substr(0,3);
finalName = (name + " ").substr(0,8) + ext;
if (name.length > 8 || usedNames.has(finalName)) {
var index = 0, suffix;
do {
++index;
suffix = "~" + index;
finalName = (name.substr(0, 8 - suffix.length) + suffix + " ").substr(0, 8) + ext;
} while (usedNames.has(finalName));
}
usedNames.add(finalName);
return finalName;
}
function sanitizeName(name) {
return name.toUpperCase().replace(/[^a-z0-9!#$%&'\(\)\-@\^_`{}~]/gi, '_');
}
function encodeTime(date) {
return date ? (date.getHours() << 11) | (date.getMinutes() << 5) + date.getSeconds() / 2 : 0
}
function encodeDate(date) {
return date ? (((date.getFullYear() - 1980) & 127) << 9) | ((date.getMonth() + 1) << 5) + date.getDate() : 0;
}
};
this.createNewDisk = function (mediaType, unformatted) {
var content = new Uint8Array(this.MEDIA_TYPE_INFO[mediaType].size);
if (!unformatted) this.formatDisk(mediaType, content);
return content;
};
this.formatDisk = function (mediaType, content) {
if (this.HARDDISK_MEDIA_TYPE_HEADER_INFO[mediaType]) this.formatHardDisk(mediaType, content);
else this.formatFloppyDisk(mediaType, content);
};
this.formatFloppyDisk = function (mediaType, content) {
// Write Boot Sector
var bootSector = diskDriveSocket.hasDOS2() || diskDriveSocket.hasHardDiskInterface() ? this.MEDIA_TYPE_BOOT_SECTOR_DOS2[mediaType] : this.MEDIA_TYPE_BOOT_SECTOR_DOS1[mediaType];
for (var b = 0; b < bootSector.length; ++b) content[b] = bootSector[b];
var bytesPerSector = bootSector[0x0b] | (bootSector[0x0c] << 8);
var numberOfFATs = bootSector[0x10];
var sectorsPerFAT = bootSector[0x16] | (bootSector[0x17] << 8);
var fatStartSector = bootSector[0x0e] | (bootSector[0x0f] << 8);
var fatStart = fatStartSector * bytesPerSector;
// Initialize FATs
content[fatStart] = mediaType; content[fatStart + 1] = 0xff; content[fatStart + 2] = 0xff;
this.mirrorFatCopies(numberOfFATs, fatStartSector, sectorsPerFAT, bytesPerSector, content);
// Initialize data area
var bytesPerDirEntry = 32;
var rootDirStartSector = fatStartSector + (numberOfFATs * sectorsPerFAT);
var rootDirMaxEntries = bootSector[0x11] | (bootSector[0x12] << 8);
var dataStartSector = rootDirStartSector + (bytesPerDirEntry * rootDirMaxEntries) / bytesPerSector;
for (b = dataStartSector * bytesPerSector; b < content.length; ++b) content[b] = 0xff
};
this.mirrorFatCopies = function(numberOfFats, fatStartSector, sectorsPerFat, bytesPerSector, content) {
var bytesPerFat = sectorsPerFat * bytesPerSector;
var dest = fatStartSector * bytesPerSector + bytesPerFat; // start at second fat
for (var f = 2; f <= numberOfFats; ++f) {
var src = fatStartSector * bytesPerSector;
for (var b = 0; b < bytesPerFat; ++b) content[dest++] = content[src++];
}
};
this.formatHardDisk = function (mediaType, content) {
var info = this.HARDDISK_MEDIA_TYPE_HEADER_INFO[mediaType];
new wmsx.MultiDownloader(
[{ url: info.header }],
function onAllSuccess(urls) {
// Header (PartitionTable + BootSector)
var header = urls[0].content;
wmsx.Util.arrayCopy(header, 0, content);
// FATs data
var data = info.fatData;
for (var f in info.fatsPos) {
var pos = info.fatsPos[f];
content[pos] = data & 0xff;
content[pos + 1] = (data >> 8) & 0xff;
content[pos + 2] = (data >> 16) & 0xff;
content[pos + 3] = (data >> 24) & 0xff;
}
}
).start(); // Synchronous
};
this.makeBootDisk = function (content) {
var urls = [{ url: diskDriveSocket.hasDOS2() ? "@DOS2Boot.zip" : "@DOS1Boot.zip" }];
if (diskDriveSocket.hasHardDiskInterface()) urls.push({ url: "@NextorBoot.zip" });
new wmsx.MultiDownloader(
urls,
function onAllSuccess(urls) {
if (urls[1])
self.writeFilesToImage(content, room.fileLoader.createTreeFromZip(wmsx.Util.checkContentIsZIP(urls[1].content))); // throws
self.writeFilesToImage(content, room.fileLoader.createTreeFromZip(wmsx.Util.checkContentIsZIP(urls[0].content))); // throws
}
).start(); // Synchronous
};
// Estimated 30% free space left
this.hardDiskMediaTypeNeededForFiles = function(files) {
// console.log("FILES:", window.F = files);
var mediaType;
for (var i = 0, len = this.HARDDISK_FORMAT_OPTIONS_MEDIA_TYPES.length; i < len; ++i) {
mediaType = this.HARDDISK_FORMAT_OPTIONS_MEDIA_TYPES[i];
var size = this.estimatedTotalSizeOnDisk(files, mediaType);
if (this.MEDIA_TYPE_INFO[mediaType].size > size * 1.3) break;
}
return mediaType;
};
this.estimatedTotalSizeOnDisk = function(files, mediaType) {
var clusterSize = this.MEDIA_TYPE_INFO[mediaType].clusterSize;
var total = 0;
for (var f = 0, len = files.length; f < len; ++f) {
var file = files[f];
if (file.isDir) {
total += Math.ceil(file.items.length * 32 / clusterSize) * clusterSize;
total += this.estimatedTotalSizeOnDisk(file.items, mediaType);
} else
total += Math.ceil(file.content.length / clusterSize) * clusterSize;
}
return total;
};
var diskDriveSocket;
this.BYTES_PER_SECTOR = 512;
this.MEDIA_TYPE_INFO = wmsx.DiskImages.MEDIA_TYPE_INFO;
this.FORMAT_OPTIONS_MEDIA_TYPES = [ 0xF9, 0xF8 ];
this.HARDDISK_FORMAT_OPTIONS_MEDIA_TYPES = wmsx.DiskImages.HARDDISK_FORMAT_OPTIONS_MEDIA_TYPES;
// IMPORTANT: In reverse order of size
this.MEDIA_TYPE_VALID_SIZES = [ 737280, 655360, 368640, 327680, 184320, 163840 ]; // All supported floppy formats
this.MEDIA_TYPE_BOOT_SECTOR_DOS1 = {
0xF9: [
0xEB, 0xFE, 0x90, 0x57, 0x4D, 0x53, 0x58, 0x20, 0x20, 0x20, 0x20, 0x00, 0x02, 0x02, 0x01, 0x00,
0x02, 0x70, 0x00, 0xA0, 0x05, 0xF9, 0x03, 0x00, 0x09, 0x00, 0x02, 0x00, 0x00, 0x00, 0xD0, 0xED,
0x53, 0x59, 0xC0, 0x32, 0xD0, 0xC0, 0x36, 0x56, 0x23, 0x36, 0xC0, 0x31, 0x1F, 0xF5, 0x11, 0xAB,
0xC0, 0x0E, 0x0F, 0xCD, 0x7D, 0xF3, 0x3C, 0xCA, 0x63, 0xC0, 0x11, 0x00, 0x01, 0x0E, 0x1A, 0xCD,
0x7D, 0xF3, 0x21, 0x01, 0x00, 0x22, 0xB9, 0xC0, 0x21, 0x00, 0x3F, 0x11, 0xAB, 0xC0, 0x0E, 0x27,
0xCD, 0x7D, 0xF3, 0xC3, 0x00, 0x01, 0x58, 0xC0, 0xCD, 0x00, 0x00, 0x79, 0xE6, 0xFE, 0xFE, 0x02,
0xC2, 0x6A, 0xC0, 0x3A, 0xD0, 0xC0, 0xA7, 0xCA, 0x22, 0x40, 0x11, 0x85, 0xC0, 0xCD, 0x77, 0xC0,
0x0E, 0x07, 0xCD, 0x7D, 0xF3, 0x18, 0xB4, 0x1A, 0xB7, 0xC8, 0xD5, 0x5F, 0x0E, 0x06, 0xCD, 0x7D,
0xF3, 0xD1, 0x13, 0x18, 0xF2, 0x42, 0x6F, 0x6F, 0x74, 0x20, 0x65, 0x72, 0x72, 0x6F, 0x72, 0x0D,
0x0A, 0x50, 0x72, 0x65, 0x73, 0x73, 0x20, 0x61, 0x6E, 0x79, 0x20, 0x6B, 0x65, 0x79, 0x20, 0x66,
0x6F, 0x72, 0x20, 0x72, 0x65, 0x74, 0x72, 0x79, 0x0D, 0x0A, 0x00, 0x00, 0x4D, 0x53, 0x58, 0x44,
0x4F, 0x53, 0x20, 0x20, 0x53, 0x59, 0x53, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
],
0xF8: [
0xEB, 0xFE, 0x90, 0x57, 0x4D, 0x53, 0x58, 0x20, 0x20, 0x20, 0x20, 0x00, 0x02, 0x02, 0x01, 0x00,
0x02, 0x70, 0x00, 0xD0, 0x02, 0xF8, 0x02, 0x00, 0x09, 0x00, 0x01, 0x00, 0x00, 0x00, 0xD0, 0xED,
0x53, 0x59, 0xC0, 0x32, 0xD0, 0xC0, 0x36, 0x56, 0x23, 0x36, 0xC0, 0x31, 0x1F, 0xF5, 0x11, 0xAB,
0xC0, 0x0E, 0x0F, 0xCD, 0x7D, 0xF3, 0x3C, 0xCA, 0x63, 0xC0, 0x11, 0x00, 0x01, 0x0E, 0x1A, 0xCD,
0x7D, 0xF3, 0x21, 0x01, 0x00, 0x22, 0xB9, 0xC0, 0x21, 0x00, 0x3F, 0x11, 0xAB, 0xC0, 0x0E, 0x27,
0xCD, 0x7D, 0xF3, 0xC3, 0x00, 0x01, 0x58, 0xC0, 0xCD, 0x00, 0x00, 0x79, 0xE6, 0xFE, 0xFE, 0x02,
0xC2, 0x6A, 0xC0, 0x3A, 0xD0, 0xC0, 0xA7, 0xCA, 0x22, 0x40, 0x11, 0x85, 0xC0, 0xCD, 0x77, 0xC0,
0x0E, 0x07, 0xCD, 0x7D, 0xF3, 0x18, 0xB4, 0x1A, 0xB7, 0xC8, 0xD5, 0x5F, 0x0E, 0x06, 0xCD, 0x7D,
0xF3, 0xD1, 0x13, 0x18, 0xF2, 0x42, 0x6F, 0x6F, 0x74, 0x20, 0x65, 0x72, 0x72, 0x6F, 0x72, 0x0D,
0x0A, 0x50, 0x72, 0x65, 0x73, 0x73, 0x20, 0x61, 0x6E, 0x79, 0x20, 0x6B, 0x65, 0x79, 0x20, 0x66,
0x6F, 0x72, 0x20, 0x72, 0x65, 0x74, 0x72, 0x79, 0x0D, 0x0A, 0x00, 0x00, 0x4D, 0x53, 0x58, 0x44,
0x4F, 0x53, 0x20, 0x20, 0x53, 0x59, 0x53, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
]
};
this.MEDIA_TYPE_BOOT_SECTOR_DOS2 = {
0xF9: [
0xEB, 0xFE, 0x90, 0x57, 0x4D, 0x53, 0x58, 0x20, 0x20, 0x20, 0x20, 0x00, 0x02, 0x02, 0x01, 0x00,
0x02, 0x70, 0x00, 0xA0, 0x05, 0xF9, 0x03, 0x00, 0x09, 0x00, 0x02, 0x00, 0x00, 0x00, 0x18, 0x10,
0x56, 0x4F, 0x4C, 0x5F, 0x49, 0x44, 0x00, 0x40, 0x7C, 0x03, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00,
0xD0, 0xED, 0x53, 0x6A, 0xC0, 0x32, 0x72, 0xC0, 0x36, 0x67, 0x23, 0x36, 0xC0, 0x31, 0x1F, 0xF5,
0x11, 0xAB, 0xC0, 0x0E, 0x0F, 0xCD, 0x7D, 0xF3, 0x3C, 0x28, 0x26, 0x11, 0x00, 0x01, 0x0E, 0x1A,
0xCD, 0x7D, 0xF3, 0x21, 0x01, 0x00, 0x22, 0xB9, 0xC0, 0x21, 0x00, 0x3F, 0x11, 0xAB, 0xC0, 0x0E,
0x27, 0xCD, 0x7D, 0xF3, 0xC3, 0x00, 0x01, 0x69, 0xC0, 0xCD, 0x00, 0x00, 0x79, 0xE6, 0xFE, 0xD6,
0x02, 0xF6, 0x00, 0xCA, 0x22, 0x40, 0x11, 0x85, 0xC0, 0x0E, 0x09, 0xCD, 0x7D, 0xF3, 0x0E, 0x07,
0xCD, 0x7D, 0xF3, 0x18, 0xB8, 0x42, 0x6F, 0x6F, 0x74, 0x20, 0x65, 0x72, 0x72, 0x6F, 0x72, 0x0D,
0x0A, 0x50, 0x72, 0x65, 0x73, 0x73, 0x20, 0x61, 0x6E, 0x79, 0x20, 0x6B, 0x65, 0x79, 0x20, 0x66,
0x6F, 0x72, 0x20, 0x72, 0x65, 0x74, 0x72, 0x79, 0x0D, 0x0A, 0x24, 0x00, 0x4D, 0x53, 0x58, 0x44,
0x4F, 0x53, 0x20, 0x20, 0x53, 0x59, 0x53, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
],
0xF8: [
0xEB, 0xFE, 0x90, 0x57, 0x4D, 0x53, 0x58, 0x20, 0x20, 0x20, 0x20, 0x00, 0x02, 0x02, 0x01, 0x00,
0x02, 0x70, 0x00, 0xD0, 0x02, 0xF8, 0x02, 0x00, 0x09, 0x00, 0x01, 0x00, 0x00, 0x00, 0x18, 0x10,
0x56, 0x4F, 0x4C, 0x5F, 0x49, 0x44, 0x01, 0x99, 0xDC, 0x1C, 0xF5, 0x00, 0x00, 0x00, 0x00, 0x00,
0xD0, 0xED, 0x53, 0x6A, 0xC0, 0x32, 0x72, 0xC0, 0x36, 0x67, 0x23, 0x36, 0xC0, 0x31, 0x1F, 0xF5,
0x11, 0xAB, 0xC0, 0x0E, 0x0F, 0xCD, 0x7D, 0xF3, 0x3C, 0x28, 0x26, 0x11, 0x00, 0x01, 0x0E, 0x1A,
0xCD, 0x7D, 0xF3, 0x21, 0x01, 0x00, 0x22, 0xB9, 0xC0, 0x21, 0x00, 0x3F, 0x11, 0xAB, 0xC0, 0x0E,
0x27, 0xCD, 0x7D, 0xF3, 0xC3, 0x00, 0x01, 0x69, 0xC0, 0xCD, 0x00, 0x00, 0x79, 0xE6, 0xFE, 0xD6,
0x02, 0xF6, 0x00, 0xCA, 0x22, 0x40, 0x11, 0x85, 0xC0, 0x0E, 0x09, 0xCD, 0x7D, 0xF3, 0x0E, 0x07,
0xCD, 0x7D, 0xF3, 0x18, 0xB8, 0x42, 0x6F, 0x6F, 0x74, 0x20, 0x65, 0x72, 0x72, 0x6F, 0x72, 0x0D,
0x0A, 0x50, 0x72, 0x65, 0x73, 0x73, 0x20, 0x61, 0x6E, 0x79, 0x20, 0x6B, 0x65, 0x79, 0x20, 0x66,
0x6F, 0x72, 0x20, 0x72, 0x65, 0x74, 0x72, 0x79, 0x0D, 0x0A, 0x24, 0x00, 0x4D, 0x53, 0x58, 0x44,
0x4F, 0x53, 0x20, 0x20, 0x53, 0x59, 0x53, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
]
};
this.MEDIA_TYPE_DPB = {
// Media F8; 80 Tracks; 9 sectors; 1 side; 3.5" 360 Kb
0xF8: [0xF8, 0x00, 0x02, 0x0F, 0x04, 0x01, 0x02, 0x01, 0x00, 0x02, 0x70, 0x0c, 0x00, 0x63, 0x01, 0x02, 0x05, 0x00],
// Media F9; 80 Tracks; 9 sectors; 2 sides; 3.5" 720 Kb
0xF9: [0xF9, 0x00, 0x02, 0x0F, 0x04, 0x01, 0x02, 0x01, 0x00, 0x02, 0x70, 0x0e, 0x00, 0xca, 0x02, 0x03, 0x07, 0x00],
// Media FA; 80 Tracks; 8 sectors; 1 side; 3.5" 320 Kb
0xFA: [0xFA, 0x00, 0x02, 0x0F, 0x04, 0x01, 0x02, 0x01, 0x00, 0x02, 0x70, 0x0a, 0x00, 0x3c, 0x01, 0x01, 0x03, 0x00],
// Media FB; 80 Tracks; 8 sectors; 2 sides; 3.5" 640 Kb
0xFB: [0xFB, 0x00, 0x02, 0x0F, 0x04, 0x01, 0x02, 0x01, 0x00, 0x02, 0x70, 0x0c, 0x00, 0x7b, 0x02, 0x02, 0x05, 0x00],
// Media FC; 40 Tracks; 9 sectors; 1 side; 5.25" 180 Kb
0xFC: [0xFC, 0x00, 0x02, 0x0F, 0x04, 0x00, 0x01, 0x01, 0x00, 0x02, 0x40, 0x09, 0x00, 0x60, 0x01, 0x02, 0x05, 0x00],
// Media FD; 40 Tracks; 9 sectors; 2 sides; 5.25" 360 Kb
0xFD: [0xFD, 0x00, 0x02, 0x0F, 0x04, 0x01, 0x02, 0x01, 0x00, 0x02, 0x70, 0x0c, 0x00, 0x63, 0x01, 0x02, 0x05, 0x00],
// Media FE; 40 Tracks; 8 sectors; 1 side; 5.25" 160 Kb
0xFE: [0xFE, 0x00, 0x02, 0x0F, 0x04, 0x00, 0x01, 0x01, 0x00, 0x02, 0x40, 0x07, 0x00, 0x3a, 0x01, 0x01, 0x03, 0x00],
// Media FF; 40 Tracks; 8 sectors; 2 sides; 5.25" 320 Kb
0xFF: [0xFF, 0x00, 0x02, 0x0F, 0x04, 0x01, 0x02, 0x01, 0x00, 0x02, 0x70, 0x0a, 0x00, 0x3c, 0x01, 0x01, 0x03, 0x00]
};
this.HARDDISK_MEDIA_TYPE_HEADER_INFO = {
16: { fatsPos: [ 0x200, 0x800 ], fatData: [ 0x00fffff0 ], header: "@Disk16MHeader.dat" },
32: { fatsPos: [ 0x200, 0x1a00 ], fatData: [ 0x00fffff0 ], header: "@Disk32MHeader.dat" },
64: { fatsPos: [ 0x400, 0x10400 ], fatData: [ 0xfffffff0 ], header: "@Disk64MHeader.dat" },
128: { fatsPos: [ 0x400, 0x20400 ], fatData: [ 0xfffffff0 ], header: "@Disk128MHeader.dat" }
};
};
wmsx.DiskImages.MEDIA_TYPE_INFO = {
// Floppy Disks
0xF8: { desc: "360KB", size: 368640, clusterSize: 2 * 512 },
0xF9: { desc: "720KB", size: 737280, clusterSize: 2 * 512 },
0xFA: { desc: "320KB", size: 327680, clusterSize: 2 * 512 },
0xFB: { desc: "640KB", size: 655360, clusterSize: 2 * 512 },
0xFC: { desc: "180KB", size: 184320, clusterSize: 1 * 512 },
0xFD: { desc: "360KB", size: 368640, clusterSize: 2 * 512 },
0xFE: { desc: "160KB", size: 163840, clusterSize: 1 * 512 },
0xFF: { desc: "320KB", size: 327680, clusterSize: 2 * 512 },
// Hard Disks
16: { desc: "16MB", size: 16777216, clusterSize: 32 * 512, secDesc: "(FAT12)" },
32: { desc: "32MB", size: 33554432, clusterSize: 16 * 512, secDesc: "(FAT12)" },
64: { desc: "64MB", size: 67108864, clusterSize: 4 * 512, secDesc: "(FAT16)" },
128: { desc: "128MB", size: 134217728, clusterSize: 4 * 512, secDesc: "(FAT16)" }
};
wmsx.DiskImages.HARDDISK_FORMAT_OPTIONS_MEDIA_TYPES = [ 16, 32, 64, 128 ];