NUCLEUS Nucleus NUCLEUS GRAFIX NUCLEUS NET NUCLEUS FILE

NUCLEUS 产品介绍

Nucleus 产品

主要内容 • • NUCLEUS GRAFIX NUCLEUS NET NUCLEUS FILE NUCLEUS MNT

NUCLEUS GRAFIX

Nucleus 产品 Telnet FTP VGA GUI Email Client SNMP TFTP Nucleus NET TCP/IP email web server Basic Services Nucleus Graphics 协议包 Mouse 图形包 Drivers SMTP POP 3 Nucleus PLUS RIP 2 系统内核 OSPF PPP Ethernet Touch Screen Keyboard Nucleus 文件系统 NET Driver JAVA LCD Driver Flash FMM SLIP MMU Driver Floppy SCSI IDE PCMCIA

Nucleus GRAFIX产品

Graphics Rendering Services Application Graphics Rendering Services Driver

基本功能 • Push panels • Status displays • . . .

基本功能 • 可裁减的矢量字体； • 动态文本格式 (bold, italic, underline, etc. ) Accelerated Technology

Nucleus GRAFIX Windowing Toolkit Application Windowing Toolkit Graphics Rendering Services Driver

Nucleus GRAFIX应用 • • • • 台式打印（Desktop publishing） 页面设计（Page layout） 计算机动画（Computer animation） 多媒体（Multi-media） CAD/CAM (Computer aided design ) 3 D 建模； 专家系统（Expert systems） CAE (Computer aided engineering ) 激光打印（Laser printing） 图象处理（Image processing） 视窗管理（Window managers） 游戏. . .

Nucleus GRAFIX应用 Metrology Instrument from Taylor Hobson Limited Nucleus Software Products Used: • Nucleus MNT • Nucleus PLUS • Nucleus NET • Nucleus FILE • Nucleus GRAFIX Laser Diagnostic Test Product from Molectron-Detector, Inc. Nucleus Software Products Used: • Nucleus MNT • Nucleus PLUS • Nucleus GRAFIX

Nucleus 产品 Telnet FTP VGA GUI Email Client SNMP TFTP Nucleus NET TCP/IP email web server Basic Services Nucleus Graphics 协议包 Mouse 图形包 Drivers SMTP POP 3 Nucleus PLUS RIP 2 系统内核 OSPF PPP Ethernet Touch Screen Keyboard Nucleus 文件系统 NET Driver JAVA LCD Driver SLIP MMU Driver Floppy SCSI IDE PCMCIA

Nucleus网络产品 • Nucleus NET ： 包含：TCP, UDP, ICMP, IGMP, ARP, RARP, DNS, DHCP (client), BOOTP (client), RIP/RIP II and TFTP (client) • Extended Protocol Package for Nucleus NET: 包含：Telnet Server, Nucleus FTP Client/Server, and TFTP Server • Nucleus SNMP(v 1, v 2…) • Nucleus DHCP Server – Dynamic Host Configuration • Nucleus SNTP Client Simple Network Time Protocol • Nucleus SSL Secure Socket Layer • ……

其它相关产品 • Nucleus EMAIL Package POP 3 and SMTP • Nucleus Web. Serv embedded version • CEE-J – Embedded Java – Personal Java with Advanced Graphics – CEE-J for MIDP (Mobile Information Device Profile)

Nucleus NET 模块 TCP/IP协议包

Nucleus NET主要特点 • TCP/IP 协议栈基本协议 v TCP – Transmission Control Protocol v UDP – User Datagram Protocol v IP – Internet Protocol v BOOTP Client – Bootstrap Protocol v IGMP – Internet Group Management Protocol v ICMP – Internet Control Message Protocol v ARP – Address Resolution Protocol v RARP – Reverse Address Resolution Protocol v DNS Client/Resolver – Domain Name System v DHCP Client – Dynamic Host Configuration Protocol v RIP II – Routing Information Protocol versions 1 and 2 v TFTP Client – Trivial File Transfer Protocol

NUCLEUS SSL • Secure Sockets Layer • 支持SSL 2. 0, SSL 3. 0, 和 TLS 1. 0. SSL； • 已经和Nucleus Web Server集成；

可兼容的第三方的协议和驱动 • • ATM -Asynchronous Transfer Mode H. 323 -Voice over IP Protocol NFS – Network File System ISDN -Integrated Services Digital Network. Digital Transmission over ordinary telephone copper wire • Frame Relay -Telecommunication service designed for cost-efficient data transmission

可兼容的第三方的协议和驱动 • Ir. DA -Infrared Data Association. Protocol for Infrared Data transfer. • OSPF -Open Shortest Path First. Routing protocol • SNMPv 1, v 2, v 3 -Simple Network Management Protocol versions 1, 2 and 3. • USB -Universal Serial Bus • WAP -Wireless Application Protocol • 802. 11 b -Wireless Ethernet

基于NUCLEUS NET的应用程序开发 • Network Configuration – Local Host Adapters Definition ( NU_DEVICE)： • dv_name ：Unique device name that is used to look up the interface. • dv_flags ：Any special flags used for configuring the operation of the device, ex DV_NOARP • (*dv_init) (DV_DEVICE_ENTRY *) ：The name of the interface’s initialization routine. • dv_driver_options： Any driver dependent options, including the possibility of the address of a structure containing driver options. • dv_ip_addr ：The IP number to be used by this Nucleus NET interface. • . . .

基于NUCLEUS NET的应用程序开发 • 建立地址的数据结构 /* Declare the address structure. */ struct addr_struct *test_addr; /* Allocate memory for the address structure. */ status = NU_Allocate_Memory (&System_Memory, (void )&test_addr, sizeof(struct addr_struct), NU_SUSPEND); /* Indicate this is an IP family address. */ test_addr->family = NU_FAMILY_IP; /* Set up the port number. */ test_addr->port = 4000; /* Set up the IP number. */ test_addr->id. is_ip_addrs[0] = (unsigned char) 100; test_addr->id. is_ip_addrs[1] = (unsigned char) 200; test_addr->id. is_ip_addrs[2] = (unsigned char) 40; test_addr->id. is_ip_addrs[3] = (unsigned char) 1; /* Set up the name. */ test_addr->name = “test_node”;

基于NUCLEUS NET的应用程序开发 • open a socket： – Ø Ø Ø Ø Ø 例子：Standard Socket- -- -like Usage （Server ） Create a socket (NU_Socket). Bind the Server port and IP address (NU_Bind). Perform a Listen call to establish the number of simultaneous requests that can be queued (NU_Listen). Perform an Accept service call to ‘wait’ for client connections (NU_Accept). After the Accept service call returns (i. e. , a connection has been established) data can be transferred (control returns from NU_Accept). Transfer data (NU_Send and NU_Recv). Close the connection (NU_Close_Socket).

E-Mail: SMTP / POP 3 • 嵌入式的 E-Mail Server ； • 发送 notification messages； Application SNMTP/POP 3 Nucleus PLUS Driver Nucleus NET

Nucleus Web. Serv • 存储器上的文件系统； • 容易和Nucleus FILE集成； • 其它的文件系统也可以被集 成； Application Nucleus Web. Serv Nucleus PLUS Driver Nucleus NET

Telnet • Telnet client 和 server ； • 可以定义任何telnet接 口； • 容易使用的 API； Application Telnet Nucleus PLUS Driver Nucleus NET

FTP / TFTP • 可以定义任何 FTP 接口 • 可以从任何的FTP client访 问 • FTP client和server Application FTP/TFTP Nucleus PLUS Driver Nucleus NET

Nucleus SNMP • 支持全部的SNMP v 1 V 2 V 3 （两种版本）. • 非常容易定制用户自己的MIB，然后也非常易 于集成. • 包含了MIB/MIB - II的编译器. • 支持MIB II Application Nucleus Web. Serv Nucleus FILE Nucleus PLUS Nucleus SNMP Driver Nucleus NET

Nucleus SNMP • • • RFC 1213 MIB-II Included. 可与Nucleus RMON(9 Groups)无缝连接. 也可与Nucleus RMONLite(4 Groups)无缝连接 非常小的代码开销（30 K Bytes） 分布式结构 支持多接口 Application Nucleus Web. Serv Nucleus FILE Nucleus PLUS Nucleus SNMP Driver Nucleus NET

Nucleus VNET • 可用Nucleus MNT #1 Nucleus MNT #2 Nucleus MNT #3 – 虚拟网络原型 • 在目标机和原型 之间通信，可与 实际目标互联； Virtual NDIS Driver Network Node #1 Network Node #2

NET的应用 Electronic Access Control from R&D, Infographics Systems Nucleus Software Products Used: • Nucleus PLUS • Nucleus NET

Nucleus 产品 Telnet FTP VGA GUI Email Client SNMP TFTP Nucleus NET TCP/IP email web server Basic Services Nucleus Graphics 协议包 Mouse 图形包 Drivers SMTP POP 3 Nucleus PLUS RIP 2 系统内核 OSPF PPP Ethernet Touch Screen Keyboard Nucleus 文件系统 NET Driver JAVA LCD Driver SLIP MMU Driver Floppy SCSI IDE PCMCIA

NUCLEUS 文件系统

NUCLEUS 文件系统特点 • 标准文件系统相关的特点 – Nucleus FILE 支持 FAT 12, FAT 16 以及FAT 32 格 式，与MS-DOS, Windows 95, Windows 98, and Windows NT兼容。 – 支持长文件名（255 characters）； FAT？

历史 • Timeline FAT 12 FAT 16 DOS 1. 0 (1981) DOS 3. 0 (1984) Win 3. 1 (1992) VFAT 32 Win 95 (1995) Win 95 Osr 2 (1996) Win 98 (1998)

FAT 12/16/32 • 比较 FAT 12 FAT 16 FAT 32 Size of FAT entry 12 bits 16 bits 32 bits Max num of clusters 4, 086 65, 526 268, 435, 456 Cluster size used 0. 5 KB - 4 KB 2 KB - 32 KB 4 KB - 32 KB Maximum Volume Size 16, 736, 256 (16 M) 2, 147, 123, 200 (2 G) about 2^41 (2 T)

FAT 文件系统基本结构 • FAT FS 包括 4个基本区域 – Reserved region • Boot record, Bios Parameter Block (BPB) – FAT region • Array of FAT entry (12/16/32 bits) – Root directory region • Array of directory entry (32 bytes) – File and directory region • Array of cluster reserved FAT(p) FAT(b) Root dir File and directory ……

FAT 文件系统基本结构 Reserved Region reserved FAT(p) FAT(b) Root dir File and directory …… • Boot record – OEM name, volume serial number, FS type …… – Boot strap code • Bios parameter block (BPB) – – – bytes/sector (512, 1024, 2048, 4096) sector/cluster (1, 2, 4, 8, 16, 32, 64, 128) number of FAT (2), number of root directory entry Total sectors on volume Media type (fixed disk, removable disk ……)

FAT 文件系统基本结构 BPB Example # of FAT(2) Media type (fixed disk) bytes/sector (512) Absolute Sector 63 (Cylinder 0, Head 1, Sector 1) 0 1 2 3 4 5 6 7 8 9 A B C D E F Sector/cluster (8) -> 4 k cluster 0000: EB 58 90 4 D 53 57 49 4 E 34 2 E 31 00 02 08 20 00. X. MSWIN 4. 1. . 0010: 02 00 00 F 8 00 00 3 F 00 80 00 3 F 00 00 00. . . . ? . . . 0020: C 1 40 5 E 00 88 17 00 00 00 02 00 00 00. @^. . . 0030: 01 00 06 00 00 00 00. . . . 0040: 80 00 29 20 20 10 00 4 D 59 5 F 43 5 F 44 52 49 56. . ). . MY_C_DRIV 0050: 45 20 46 41 54 33 32 20 20 20 FA 33 C 9 8 E D 1 BC E FAT 32. 3. . 0060: F 8 7 B 8 E C 1 BD 78 00 C 5 76 00 1 E 56 16 55 BF 22. {. . . x. . v. . V. U. " Total sector on volume (6176961) -> 3 G

FAT 文件系统基本结构 FAT Region reserved FAT(p) FAT(b) Root dir File and directory …… • 通常有两个 2 (primary, backup) • 每个簇都有一个入口在FAT中，用来描述簇的 使用状况； Cluster 2 Cluster 3 …… … FAT Data region Cluster n-1 Cluster n

FAT 文件系统基本结构 FAT Region • Fat entry description Number Description FAT 12 FAT 16 0 0 Free cluster ? ? ? ? Cluster in use, next cluster in chain FF 0 -FF 6 FFF 0 -FFF 6 Reserved FF 7 FFF 7 Cluster contains bad sectors FF 8 -FFFF End of file

FAT 文件系统基本结构 FAT Region • FAT chaining example (FAT 16) In directory entry ……

FAT 文件系统基本结构 Root Directory Region reserved FAT(p) FAT(b) Root dir File and directory …… • Only in FAT 12/16 – There is no root directory region in FAT 32 • Array of 32 -byte directory entry

FAT 文件系统基本结构 Root Directory Region • Max number of root directory entries depends on the type of volume Volume type Max num of root dir entry 360 k. B 5. 25" Floppy Disk 112 720 k. B 3. 5" Floppy Disk 112 1. 2 MB 5. 25" Floppy Disk 224 1. 44 MB 3. 5" Floppy Disk 224 2. 88 MB 3. 5" Floppy Disk 448 Hard Disk 512 • FAT 32 doesn’t have root directory region, so no limit on count of files/dir in root directory

FAT 文件系统基本结构 File and Directory Region reserved FAT(p) FAT(b) Root dir File and directory …… • Where real data block resides • Array of clusters

目录体系 • directory entry – Holds metadata（元数据） of files • • Name. ext (8. 3) File attribute (regular file, directory, volume) Creation time/date Last access date Last modified time/date First cluster number File size – 32 bytes long

目录体系 • Structure (32 bytes) name last create access date unused (0) ext attr last first modified cluster date time FAT 12/16 : unused FAT 32 : first cluster hi create time file size

目录体系 • Special meaning of name[0] – 0 x. E 5 : the directory entry is free – 0 x 00 : the directory entry is free, and no allocated directory entries after this – 0 x 05 : actual character for this byte is 0 x. E 5 (kludge for Japan KANJI)

目录体系 • Attribute archive This bit is set when file is created, renamed, or written to. -> support backup utilities dir volume system hidden read only If this bit is set, this entry provides disk volume label -> should be one in entire volume

目录体系 • Date (1980. 1. 1 ~ 2107. 12. 31) Year from 1980 (0 -127) Month of year (1 -12) Day of month (1 -31) Time (00: 00 ~ 23: 59: 58) Hours (0 -23) minutes (0 -59) 2 -sec count (0 -29)

长文件名 • VFAT ； • When creating a file with LFN, – Windows creates a conventional 8. 3 name in one directory entry – And, creates one or more secondary directory entries, one for each set of 13 characters in LFN • Additional LFN entries has all volume, readonly, system, hidden attribute bits set • LFN uses Unicode (2 bytes)

长文件名 • structure attr (0 x 0 F) fix (0 x 00) filename[1 -5] filename[7 -11] checksum filename[6] fix filename[12 -13] (0 x 00) Sequence number of entry in LFN entry set ( last entry must be OR’d by 0 x 40 (01000000))

长文件名 • LFN example (“The quick brown. fox”)

NUCLEUS 原型 具

Nucleus MNT/VNET • Nucleus PLUS for Windows NT – Nucleus PLUS program executing as Windows NT Process – Nucleus PLUS tasks are Windows NT threads • Virtual Networking using Nucleus NET on Windows NT – Nucleus to Nucleus – Nucleus to Win. Sock – Nucleus to Physical Network

Nucleus VNET - Diagram Win. Sock Applicatio n Nucleu s PLUS Nucleu s NET Win. Sock Applicatio n Windows NT Application Space Windows NT Kernel NDIS VNETDR V Virtual NDIS Shared Memory Physical Network Physica l Node

MNT • Microsoft Visual Developer Studio Used to Support Cross Development Tools – Project Manager – Browser – Other software tools