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Application Note AP-DOC-010 Designing with the DiskOnChip® DIP Written by: Yigal Ben-Zeev JULY-2000 91-SR-002-01-7L REV. 3.1 Designing with the DiskOnChip DIP 91-SR-002-01-7L Rev. 3.1 2 Contents 1 Introduction ............................................................................................................................3 2 Operating the DiskOnChip ....................................................................................................3 2.1 Installing the DiskOnChip DIP...........................................................................................3 2.2 Configuring the DiskOnChip DIP as the Boot Device ........................................................3 2.3 Configuring the DiskOnChip DIP as a Drive......................................................................4 3 DiskOnChip DIP EVB (Evaluation Board) .............................................................................4 4 DiskOnChip DIP Socket Design Example.............................................................................5 5 Additional Information and Tools .........................................................................................6 How to Contact Us ........................................................................................................................7 Designing with the DiskOnChip DIP 91-SR-002-01-7L Rev. 3.1 3 1 Introduction This application note describes how to integrate the DiskOnChip DIP (DiskOnChip 2000 and DiskOnChip Millennium DIP products) with PC compatible systems. The DiskOnChip DIP is a single chip flash disk designed to plug into a standard 32-pin DIP EEPROM socket. The DiskOnChip DIP should be mapped into an 8Kbyte window in the BIOS expansion address space of the PC, which is usually located between address 0C0000H to 0EFFFFH. The DiskOnChip DIP contains a built-in copy of the M-Systems industry-standard TrueFFS software, which enables the DiskOnChip to operate as a standard disk drive. The DiskOnChip DIP can contain the operating system in it to allow systems to boot without a hard disk. The DiskOnChip DIP can also be configured as the boot device in systems with a hard disk (see below “Configuring the DiskOnChip DIP as the first drive”). The DiskOnChip is a self-contained device. The installation of the DiskOnChip does not require any software installation. The design of the DiskOnChip allows for full upward and downward compatibility. While available in capacities of 8MB to 288MB, future DiskOnChip DIP devices with higher capacities will be fully compatible with standard DiskOnChip DIP sockets. The basic design of the DiskOnChip actually supports an unlimited capacity. 2 Operating the DiskOnChip 2.1 Installing the DiskOnChip DIP When installing or removing the DiskOnChip, be sure to first touch a grounded surface to discharge any static electricity from your body. Use the following procedure to install the DiskOnChip: Warning: The DiskOnChip may be permanently damaged if installed incorrectly! 1. Align pin 1 on the DiskOnChip with pin 1 of the socket. 2. Push the DiskOnChip into the socket carefully until it is fully seated. 3. Check to make sure the DiskOnChip is installed securely and that there are no bent pins. 2.2 Configuring the DiskOnChip DIP as the Boot Device In order to configure the DiskOnChip as the boot device, the operating system files need to be copied into it. Copying the operating system files into DiskOnChip should be done as in any other hard disk. The following is an example of a typical initialization process: 1. Set the DiskOnChip as a regular drive in your system (not a boot drive). 2. Install a bootable floppy diskette in drive A and boot the system. 3. At the DOS prompt, type SYS C: to transfer the DOS system files to the DiskOnChip (assuming the DiskOnChip is installed as drive C). Designing with the DiskOnChip DIP 91-SR-002-01-7L Rev. 3.1 4 4. Copy any files needed into the DiskOnChip. 5. Remove the floppy diskette and reboot the system. The system will now boot from the DiskOnChip and allow you to run and access any files that have been copied into the DiskOnChip. 2.3 Configuring the DiskOnChip DIP as a Drive The DiskOnChip can be configured to be installed as the last drive (default), or as the first drive in the system. When configured as the last drive, the DiskOnChip is installed as disk D: if there is another hard drive installed, and as drive C: if no other hard drive is installed. When configured as the first drive, the DiskOnChip is always installed as drive C: Note: The DiskOnChip DIP is shipped from the factory, configured to be installed as the last drive. 2.3.1 Configuring the DiskOnChip DIP as the First Drive To configure the DiskOnChip to be installed as the first drive, proceed as follows: 1. Boot the system and make sure the DiskOnChip is installed correctly as drive D:. 2. At the DOS prompt, type: DUPDATE D: /FIRST /S:DOC123.EXB1. 3. Re-boot the system. 4. After re-booting the system, the DiskOnChip will appear as drive C:. 2.3.2 Configuring the DiskOnChip with Additional Hard Drives 1. To configure the DiskOnChip to be installed with other hard drives, proceed as follows: 2. To install the DiskOnChip as drive C on a system without a hard disk, set the CMOS setup of drive C: to “not installed” (indicating that no physical magnetic disk is installed), and reboot the computer. The DiskOnChip DIP will install as drive C:. The DiskOnChip needs to be formatted with the system files in order for it to be a bootable drive. See “Configuring the DiskOnChip as the Boot Device” below. 3. To install the DiskOnChip as drive D: on a system with a hard disk, just reboot the system, and the DiskOnChip will install as drive D:. 3 DiskOnChip DIP EVB (Evaluation Board) The DiskOnChip DIP Evaluation Board (EVB), available from M-Systems, is an evaluation tool for the DiskOnChip. The package includes an ISA board with a DiskOnChip DIP socket, software and detailed documentation. The DiskOnChip DIP EVB enables the evaluation and testing of the DiskOnChip in a standard PC environment. 1 The file name, DOC123.EXB, may change in future software versions. Designing with the DiskOnChip DIP 91-SR-002-01-7L Rev. 3.1 5 4 DiskOnChip DIP Socket Design Example DiskOnChip 2000 1 2 3 29 28 4 25 23 26 27 5 6 A12 A11 A10 A9 A8 A7 A6 7 8 9 A5 A4 A3 10 11 12 A2 A1 A0 NC NC (A16) NC (A15) NC (A14) NC (A13) 13 14 15 17 D0 D1 D2 D3 18 19 20 21 D4 D5 D6 D7 24 31 22 16GND 32VCC A0 A1 A2 E1 E2 E3 SA11 SA10 SA9 SA8 SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0 SD0 SD1 SD2 SD3 SD4 SD5 SD6 SD7 0.1 5V MEMR MEMW 74HCT138 1 2 3 4 5 6 SA18 SA19 SA17 AEN A B G Y0 Y1 Y2 Y3 4 5 6 7 74HCT139 2 3 1 SA15 SA16 SA13 SA14 A B G Y0 Y1 Y2 Y3 12 11 10 9 74HCT139 14 13 15 Address 0C800H - 0C9FFH 0CC00H - 0CDFFH 0D000H - 0D1FFH 0D400H - 0D5FFH 0D800H - 0D9FFH 0DC00H - 0DDFFH SA12 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 15 14 13 12 11 10 9 7 JP1 1 2 3 4 5 6 1 2 3 4 JP2 1-2 3-4 1-2 3-4 1-2 3-4 JP1 1-2 1-2 3-4 3-4 5-6 5-6 JP2 30 CE OE WR # # # Note: The above design illustrates a DiskOnChip DIP mapped into an 8Kbyte window. The DiskOnChip DIP is compatible with larger windows and will operate and BOOT properly with larger window sizes such as 32Kbyte and 64Kbyte windows. Note: Pin 30 connection to VCC is optional - to support 28-pin devices. Designing with the DiskOnChip DIP 91-SR-002-01-7L Rev. 3.1 6 5 Additional Information and Tools A variety of Application Notes, User Manuals, data sheets and tools are available from M- Systems for usage of the different DiskOnChip Products under various Operating Systems and environments. These documents are available through M-Systems distributors, directly from M-Systems worldwide offices and from M-Systems’ web site (www.m-sys.com). Here is a brief list of some of the documents available: Document/Tool Description DiskOnChip 2000 Data Sheet DiskOnChip 2000 Data Sheet DiskOnChip Millennium Data Sheet DiskOnChip Millennium Data Sheet DiskOnChip DIMM2000 Data Sheet DiskOnChip DIMM2000 Data Sheet DiskOnChip Utilities DiskOnChip Utilities User Manual DiskOnChip DIP EVB DiskOnChip DIP Evaluation Board DiskOnChip GANG 1+8 Socket GANG Programmer Designing with the DiskOnChip DIP 91-SR-002-01-7L Rev. 3.1 7 How to Contact Us Internet: http://www.m-sys.com E-mail: info@m-sys.com USA Office: M-Systems Inc. 8371 Central Ave, Suite A Newark CA 94560 Phone: 1-510-494-2090 Fax: 1-510-494-5545 Taiwan Office: Room B, 13th floor, No. 133 Min Sheng East Road Taipei, Taiwan R.O.C. Phone: 886-2-87706226 Fax: 886-2-87706295 Japan Office: M-Systems Japan Inc. Arakyu Bldg., 5F 2-19-2 Nishi-Gotanda Shinagawa-ku Tokyo 141-0031 Phone: 81-3-5437-5739 Fax: 81-3-5437-5759 U.K. Office: M-Systems UK Ltd. PO Box 20 Chalgrove SPDO OX44 7YP Phone: 44-1865-891-123 Fax: 44-1865-891-391 Israel Office: M-Systems Ltd. Atidim Industrial Park P.O.B. 58036 Tel Aviv 61580 Phone: 972-3-647-7776 Fax: 972-3-647-6668 M-Systems assumes no responsibility for the use of the material described in this document. Information contained herein supersedes previously published specifications on this device from M-Systems. M-Systems reserves the right to change this document without notice.