Adaptec PCM-3420, PC/104 manual Port I/O Address

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PORT I/O ADDRESS

A window through which software programs communicate commands to an installed host adapter board. The commands are communicated 8 bits at a time.

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. 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.

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R

REMOVABILITY

A feature where the media in a removable media disk drive can be removed, then replaced with the same or different media without causing problems to the operating system. If removability was not supported, media in a removable media drive could not be removed without potential loss for data unless the computer was turned off.

5 0 PCM-3420 User's Manual

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Contents PCM-3420 PC/104 Fast SCSI-2 Module Page Copyright Notice AcknowledgementsPacking Set Contents Appendix C Glossary of Technical Terms39 Appendix a Installing PC/104 ModulesAppendix B Pin Assignments General Information Product Highlights IntroductionFeatures Peripheral Device SupportPhysical and Environmental Specifications SpecificationsTechnical Specifications Board layout Page Hardware Installation Jumpers and Connectors Jumpers Label FunctionJP6 JP7 JP2 Locating Jumpers & Connectors Setting Jumpers Factory Default Settings PrecautionsInstalling PCM-3420 Module Jumper Configuration Reference JP2SD0 SD1 SD2 DMA DC1 DC2 This jumper block provides six major PCM-3420 operation mode CC000h CFFFFh Scsi Hard Disk Drive Connector CN1 Page EZ-SCSI Quick Reference Windows 95 or Windows NT System Requirements for Full Installa- tionQuick Start Instructions Windows/Windows for Workgroups DOSWindows 95/Windows NT Troubleshooting Troubleshooting TipsScsi Device Troubleshooting General Information Page General Information Information for DOS/Windows 3.1x Users DOS and Windows 3.1x Device DriverDOS and Windows 3.1x Aspi Managers DOS Formatting UtilitiesLow-level Formatter scsifmt Formatter and Partitioner afdisk Removable Media Manager rmvtool Page Installing PC/104 Modules Installing PC/104 modules PC/104 Module Mounting Diagram Page Pin Assignments PC/104 Connectors J1 , J2 Pin SignalInternal SCSI-2 Connector CN Page Glossary of Technical Terms Adaptec EZ-SCSI Termpwr GND Synchronous Transfer Bios Devicedriver DOS Partition Chronous Full Scsi IRQ Narrow Scsi device as opposed to Wide Scsi device Port I/O Address Scsi Device Taggedqueuing Termination Page Appendix C Glossary of Terms