Adaptec PC/104 User Manual
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Adaptec PC/104 User Manual

Adaptec PC/104 User Manual

Pc/104 fast scsi-2 module
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  • Page 3 Adaptec , Adaptec logo, AHA, and EZ-SCSI are trademarks of Adaptec Inc. PC/104 and the PC/104 logo are registered trademarks of the PC/104 Consortium Floptical is a trademark of Insite Peripherals Windows and Windows 95 are registered trademarks of Microsoft...
  • Page 4 - 1 Manager Set utility disk for OS/2, Windows NT, Windows 95, and Netware v3.1x, v4.xx - 1 Manager Set utility disk for SCO and Unixware - 1 Adaptec 6000 Family Manager Set User’s Guide (postscript print files) disk If any of these items are missing or damaged, contact your distributor...

  • Page 5: Table Of Contents

    or sales representative immediately. Product Highlights ... 2 Introduction ... 2 Features ... 3 Peripheral Device Support ... 3 Specifications ... 4 Technical Specifications ... 4 Physical and Environmental Specifications ... 4 Board layout ... 5 Jumpers and connectors ... 8 Locating jumpers ...
  • Page 6 SCSI Device Troubleshooting ... 22 Windows 95/Windows NT Troubleshooting ... 22 Information for DOS/Windows 3.1x users ... 26 PC/104 connectors ... 36 SCSI Hard Drive Connector ...37...

  • Page 7: Product Highlights

    This chapter gives background informa- tion on the PCM-3420. You can find out : Product Highlights Product Features Compatibility Product Specifications Card Layout Chapter 1 General Information...
  • Page 8 Customer configuration to match specific requirements Economical connection of up to seven(7) SCSI devices Proven Adaptec quality and reliability The PCM-3420 host adapter offers a wide range of flexible, economical and expandable solutions that can satisfy diverse needs in SCSI connectivity.

  • Page 9: Chapter 1 General Information

    Adaptec’s proven AIC-6360 16-bit fast SCSI protocol chip. Fully Adaptec AHA-1520A hardware compatible. Fully Adaptec AHA-1510A/1520A/1522A software compatible. SCSI-2 and Fast SCSI-2 devices are supported. ASW SCSI BIOS provided, which supports boot capability. Synchronous and Asynchronous data transfer modes are supported.
  • Page 10 The PCM-3420 is designed to be compatible with devices that comply with SCSI-2 standard, including those not on this list. Not all models from a given manufacturer have been tested. Computer BUS: PC/104 (ISA) Standard Interface Protocol: PIO Device Protocol: SCSI-2 Fast SCSI Transfer Rate: Up to 10.0 Mbytes/sec...
  • Page 11 Chapter 1 General Information...
  • Page 12 PCM-3420 User's Manual...

  • Page 13: Safety Precautions

    This chapter tells how to set up the PCM- 3420 hardware , including instructions on setting jumpers and connecting SCSI devices. Be sure to read all the safety precautions before you begin the installation proce- dure. Chapter 2 Hardware Installation 7...
  • Page 14 Connectors on the board link it to SCSI devices and other PC/104 modules. In addition, the board has a number of jumpers that allow you to configure the SCSI application to suit your systems. The table below lists the function of each board jumpers and connec-...

  • Page 15: Chapter 2 Hardware Installation

    Operation Mode BIOS Addr. BIOS Addr. JP10 BIOS Func. SCSI ID,DMA Channel IRQ, Parity SCSI-2 connector Port Termination Addr. Select Channel Chapter 2 Hardware Installation 9 SCSI-2 CN1 PC/104 J1,J2...
  • Page 16 You configure your PCM-3420 card to match the needs of your application by setting jumpers. Jumpers are the simplest kind of electric switch. They consist of two metal pins and a small metal clip (often protected by a plastic cover) that slides over the pins to connect them.

  • Page 17: Factory Default Settings

    Place all electronic components on a static-dissipative surface or in a static-shielded bag when they are not in the chassis. PCM-3420 16-bit fast SCSI-2 host adapter are factory configured to operate in most PC/104 (ISA) computer systems. The factory default settings are: SCSI Disconnection SCSI ID...
  • Page 18 Data Transfer Mode SCSI Floppy/Floptical Fast SCSI > 1 Gbyte Translation In most cases, you will not need to change these settings. Nine jumper blocks on the PCM-3420 host adapter are used to config- ure user-selectable options. The following description shows the proper jumper settings for their respective applications.
  • Page 19 Jumper Block JP4 : This jumper block is used to set IRQ channel. You must also set the corresponding IC jumper on jumper block 5. Set IRQ 12 Set IRQ 11 * Set IRQ 10 Set IRQ 9 (* means default setting) Jumper Block JP5 : This jumper block provides four functions eight jumper to set the PCM-3420 host adapter configuration , including SCSI ID , IRQ...
  • Page 20 11 * (* means default setting) Jumper Block JP4 also needs to set to the same IRQ channel. JP5 Set PCM-3420 DMA Channel : This setting is valid only if DMA is enabled on JP6 (DT - data transfer mode). (Jumper Block JP3 must also be the same DMA channel) (* means default setting) JP5 Enable/Disable PCM-3420 Parity Checking : PCM-3420 User's Manual...
  • Page 21 Parity Checking SP Enabled * Disabled (* means default setting) Jumper Block JP6 : This jumper block provides six major PCM-3420 operation mode settings , including data transfer mode, booting, fast SCSI , ... etc. Jumper Description Set data transfer mode DMA Enabled PIO (Programmed I/O)* = Close Enable/Disable Boot from PCM-3420 BIOS...
  • Page 22 (* means default setting) Jumper Block JP7 : If JP10 BIOS setting is enabled , you should use this jumper to assign a Port address. Port 340h * = 2-3 Close Port 140h (* means default setting) Notes : The PCM-3420 host adapter BIOS supports booting only for the default port address of 340h.
  • Page 23 adapter BIOS is enable , you should assign a right BIOS address (JP8 and JP9) and port address (JP7) at the same time. Host Adapter BIOS Disabled Host Adapter BIOS Enabled* (* means default setting) The SCSI hard disk drives require a 50-pin flat cable. Wire number 1 on the cable is red or blue, and the others wires are gray.
  • Page 24 PCM-3420 User's Manual...

  • Page 25: System Requirements

    Use this chapter to learn about Adaptec EZ-SCSI 4.0 : System Requirements Installation procedures Troubleshooting Information DOS Device Drivers and Formatting Utilities To learn about Adaptec EZ-SCSI Win- dows application , see their online help. Chapter 1 General Information...

  • Page 26: Quick Start Instructions

    A 386-based PC or higher with at least 4Mbytes of memory , 10MBytes of free disk space , and a 3.5-inch floppy drive An ASPI-compliant SCSI host adapter (like PCM-3420) and a CD-ROM drive Microsoft Windows 95 , Windows NT version 3.51 or above , Windows 3.1x, Windows for Workgroups 3.1x, or DOS 6.x or above.
  • Page 27 1.Install Windows 3.1x or Windows for Workgroups 3.1x and start it running on your computer. 2.Insert the EZ-SCSI Diskette in your floppy disk drive. 3.Select File/Run from the Program Manager menu. 4.When the Run dialog box appear, type a:\setup if you are using the A drive or b:\setup if you are using the B drive.
  • Page 28 Review this checklist if your newly-installed SCSI disk drivers , CD- ROM drivers, and other devices do not seem to work properly. Be sure that termination setting are set correctly for all devices on the SCSI bus, as described in chapter 2. Be sure there are no hardware conflicts, such as devices in your computer trying to use the same interrupts(IRQs) or DMA channels.
  • Page 29 Hardware Wizard again, select No on the second screen of the wizard, then select SCSI controllers on the next screen. Select the name of your host adapter when it appears (Select Adaptec AHA- 152x). If the name of your SCSI host adapter does not appear, you may be able to find its miniport driver on the Windows 95 CD-ROM.
  • Page 30 Play, Windows will install and configure it automatically. Other- wise, run Add New Hardware to make sure the new driver is loaded. Q:If I am running under Windows 95, do I need lines for the Adaptec real mode ASPI drivers and mscdex in my config.sys and autoexec.bat files?
  • Page 31 2. When the DOS prompt appears, follow the Quick Start instruc- tions for DOS on previous page. 3. When you are finished running Adaptec EZ-SCSI for DOS, find the file named cdtsd.vxd in the Windows\system\iosubsys directory and rename it cdtsd.sav.
  • Page 32 Each kind of device requires a different device driver. Adaptec EZ-SCSI includes several DOS/Windows 3.1x device drivers that are copied to your hard disk during installation. Adaptec EZ-SCSI adds command lines to your config.sys and autoexec.bat files to load these device drivers if it finds these kinds of devices on your computer system.
  • Page 33 Use the DOS-based scsifmt utility for low-level formatting of SCSI hard disk drives, removable media, Floptical drivers, and magneto-optical drivers. You can also use it to scan a disk device for surface defects before you store data on it. Run scsifmt from the DOS prompt, not from the Windows MS-DOS prompt.
  • Page 34 Use the DOS-based afdisk utility to partition and format SCSI hard disk drivers, Floptical drivers, and magneto-optical drivers. You can also use afdisk to remove DOS and non-DOS partitions from a disk drive and to format removable media in standard disk format, OS/2 floppy format, or DOS/V (Japanese) format.
  • Page 35 3.To create a new partition on the disk devices, press Ins. A screen will appear. The Create a DOS Partition window suggests that you create one partition on the disk device , equal to its entire capacity. If this is what you want to do , skip to step 5. 4.To change the size of partition, use the arrow keys to select Start Cylinder and End Cylinder, and type in the numbers you want.
  • Page 36 DOS prompt and press Enter. A list of SCSI devices appears. (Device that support removable media are marked.) If your computer has two or more host adapter, you need to add another number to the command. For example, if you have two PCM- 3420 host adapters, one of them is host adapter 0 and the other is host adapter 1.
  • Page 37 This appendix gives instructions for installing PC/104 Modules. Appendix A Installing PC/104 Modules...

  • Page 38: Pc/104 Connectors

    CPU card in order to properly connect your PC/104 module. (Refer to the diagram on the following page.) 4. Mount the PC/104 module onto the CPU card by pressing the module firmly but carefully onto the mounting connectors.

  • Page 39: Appendix A Installing Pc/104 Modules

    F e m a l e M a l e PC/104 Module C P U C a r d PC/104 Module Mounting Diagram 3.500 3.250 3.775 3.575 3.575 0.200 0.200 0.200 3.350 3.550 PC/104 module dimensions (inches ±5 %) Appendix A Installing PC/104 Modules...
  • Page 40 PCM-3420 User's Manual...
  • Page 41 This appendix contains information of a detailed or specialized nature. It includes : PC/104 Connector Internal SCSI-2 Connector Appendix B Pin Assignments...
  • Page 42 PCM-3420 PC/104 Connectors (J1 , J2) Number Row-A — IOCHCHK 0V MEMCS16 IOCHRDY SA19 SA18 SA17 SA16 SA15 SA14 SA13 SA12 SA11 SA10 PCM-3420 User's Manual Signal Row-B Row-A — RESETDRV LA23 LA22 IRQ9 LA21 LA20 DRQ2 LA19 -12V LA18...

  • Page 43: Appendix B Pin Assignments

    PCM-3420 Internal SCSI-2 Connector (CN1) Signal Signal -DPAR TERM POWER -ATN -BSY -ACK -RST -MSG -SEL -C/D -REQ -I/O Appendix B Pin Assignments...
  • Page 44 PCM-3420 User's Manual...
  • Page 45 Appendix C Glossary of Terms 39...
  • Page 46 A user-friendly software program that automatically installs SCSI devices such as fixed disks and CD-ROM drives on a PC. Adaptec EZ-SCSI copies the required software programs to the PC’s fixed disk and edits the configuration files so the host adapter can access the devices.

  • Page 47: Appendix C Glossary Of Terms

    Second generation Adaptec single chip non-bus mastering ISA to SCSI host adapter (compatible with the first version, the AIC-6260). This chip is found on some Adaptec host adapters, such as the AVA- 1505, AVA-1515, AHA-1520A, AHA-1522A, and the AMM-1570. Adaptec also licenses the chip to motherboard vendors and other I/O card manufacturers.

  • Page 48: Asynchronous Data Transfer

    SCSI device drivers. ASPI enables host adapters and device drivers to share a single SCSI hardware interface. An acronym for Adaptec Software. ASYNCHRONOUS DATA TRANSFER A method of SCSI data transfer. This is the type of transfer rate originally introduced with SCSI 1.
  • Page 49 Expansion devices use the bus to send data to and receive data from the PC’s CPU or memory. ISA,PC/104, EISA and Micro Channel are the major bus standards used in PC's’s.

  • Page 50: Device Driver

    DEVICE DRIVER A software program that enables a PC to communicate with peripheral devices such as fixed disk drives and CD-ROM drives. Each kind of device requires a different driver. Device driver programs are stored on a PC’s fixed disk and are loaded into memory at boot time.
  • Page 51 DOUBLE WORD PIO TRANSFERS This is a type of data transfer done by 386 and newer micropro- cessors. With the Adaptec AIC-6360 based host adapters (AHA- 1510A/1520A/1522A and PCM-3420), this can result in up to a 20% increase in performance over the AIC-6260 based host adapters.
  • Page 52 FAST SCSI Provides for performance and compatibility enhancements to SCSI-1 by increasing the maximum synchronous data transfer rate on the SCSI bus from 5 MBytes/sec to 10 MBytes/sec. There are 2 handshaking modes on the SCSI bus, used for transferring data: ASYNCHRONOUS and SYNCHRONOUS. ASYNCHRONOUS is a classic Req/Ack handshake.

  • Page 53: Host Adapter

    FULL SCSI A SCSI solution that includes BIOS and support software to provide boot capability for hard disk drives, support for drives larger than 1 B, and full compatibility with removable media products (hard drives, optical drives, tape drives, and Floptical drives).
  • Page 54 PC’s CPU and memory 16 bits at a time. Expansion devices are plugged into sockets in the PC’s mother- board. ISA is sometimes called the AT Bus, because it was originally introduced with the IBM PC-AT in 1983. (PC/104 follows this standard.) PCM-3420 User's Manual...
  • Page 55 Narrow SCSI device (as opposed to Wide SCSI device) This is the term attributed to today’s 8 bit standard SCSI devices. This term is necessary to distinguish today’s 8-bit SCSI devices to 16-bit Wide SCSI devices. PIO (Programmed Input/Output) A method of data transfer in which the host microprocessor transfers data to and from memory via the computer’s I/O ports.
  • Page 56 I/O ports. PIO enables very fast data transfer rates, especially in single- tasking operating systems like DOS. The Adaptec AHA-1510 and AHA-1520 host adapters and the AIC-6260 SCSI protocol controller use this data transfer method.

  • Page 57: Scsi Device

    SCSI (Small Computer Systems Interface) A PC bus interface standard that defines standard physical and electrical connections for devices. SCSI provides a standard interface that enables many different kinds of devices, such as disk drives, magneto optical disks, CD-ROM drives, and tape drives to interface with the host computer.

  • Page 58: Tagged Queuing

    1) We have measured propagation delays from various cables and found an average of 1.7 nanoseconds per foot, which is roughly 5.25 ns per meter. 2) The turn-around time is the amount of time the SCSI chip takes to change an output in response to an input. If REQ is an input then ACK is an output.
  • Page 59 TERMINATION A physical requirement of the SCSI bus. The first and last devices on the SCSI bus must have terminating resistors installed, and the devices in the middle of the bus must have terminating resistors removed. The Single Ended electrical class depends on very tight termination tolerances, but the passive 132 ohm termination defined in 1986 is mismatched with the cable impedance (typically below 100 ohms).
  • Page 60 SCSI, this can result of SCSI bus data transfer rates of 20 MBytes/ sec (with a 16-bit bus) or 40 MBytes/sec (with a 32-bit bus). SCSI may now transfer data at bus widths of 16 and 32 bits. Commands, status, messages and arbitration are still 8 bits, and the B-Cable has 68 pins for data bits.
  • Page 61 Appendix C Glossary of Terms 55...
  • Page 62 PCM-3420 User's Manual...

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