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Technical Paper: Initialisation of Iomega Zip Drive by Roland SP-808

Abstract:

This technical paper explores the initialization process of an Iomega Zip Drive by the Roland SP-808. The SP-808 communicates with the Zip drive using ATAPI commands, revealing unique interactions and potential manufacturer-specific extensions by Iomega. The paper aims to provide a comprehensive understanding of the commands issued during the initialization process.

1. Introduction:

The Roland SP-808 utilizes the ATAPI protocol to communicate with an Iomega Zip Drive for storage purposes. This paper delves into the initialization sequence, examining the commands issued by the SP-808 and noting any proprietary extensions introduced by Iomega.

2. Initialization Commands:

2.1 Software Reset:

The initialization process begins with a software reset (SRST) command, initiated by the SP-808 to reset the ATA interface.

[00:02:00 DEBUG D0 A0 5A] Software (SRST) Reset

2.2 IDENTIFY PACKET DEVICE:

Following the reset, the SP-808 issues the IDENTIFY PACKET DEVICE command to gather detailed information about the connected Zip drive.

[00:02:00 DEBUG D0 A1 --] IDENTIFY PACKET DEVICE

2.3 SET FEATURES:

A SET FEATURES command is utilized by the SP-808, employing manufacturer-specific extensions.

[00:02:00 DEBUG D0 EF --] SET FEATURES ID - drive: A0
[00:02:00 DEBUG D0 EF --] Subcomm: 03, params: 08 | 01 | 14 | eb

Manufacturer-specific extensions may include configuring features or settings specific to Iomega's implementation.

2.4 Request Sense and Unit Attention:

The SP-808 issues a REQUEST SENSE command to retrieve information about a reported Unit Attention condition.

[00:02:00 DEBUG D0 A0 03] REQUEST SENSE: key=06, asc=29, ascq=00

2.5 START/STOP UNIT:

A START/STOP UNIT command is issued, possibly to initialize or start the drive.

[00:02:00 DEBUG D0 A0 1B] START/STOP UNIT: LoEj: 0, start: 1, immed: 0

2.6 ATAPI INQUIRY:

The ATAPI INQUIRY command is used to obtain information about the connected Iomega Zip Drive.

[00:02:00 DEBUG D0 A0 12] ATAPI INQUIRY

2.7 MODE SENSE:

MODE SENSE commands are employed, possibly for retrieving information about specific modes supported by the drive.

[00:02:00 DEBUG D0 A0 5A] MODE SENSE (10)
[00:02:00 DEBUG D0 A0 5A] MODE SENSE PC=0, PageCode=2f, alloc_len=80

Manufacturer-specific extensions, such as Iomega's proprietary commands, may be present in the output.

2.8 READ Commands:

The SP-808 issues READ commands to read data from the Zip Drive, specifying the number of sectors and desired block size.

[00:05:52 TRACE D0 A0 A8] Packet: A8 00 00 00 00 21 00 00 00 09 00 00, DMA: 0
[00:05:52 DEBUG D0 A0 A8] READ (12), sector: 33, len: 9

3. Conclusion:

This technical paper outlines the initialization process of an Iomega Zip Drive by the Roland SP-808, detailing the specific ATAPI commands issued during the interaction. Noteworthy are manufacturer-specific extensions, potentially introduced by Iomega, emphasizing the importance of understanding unique implementations for successful integration.

4. Acknowledgments:

The authors would like to acknowledge the importance of documentation and communication standards in ensuring seamless interactions between devices.

Feel free to expand on each section with more details, explanations, or additional insights based on your specific knowledge of the interaction between the SP-808 and the Iomega Zip Drive.