PACIFIC SCIENTIFIC PC832-001-N Digital analog converter

When a disk transfer is requested: ❏ Start and size of the transfer is specified in blocks ❏ 177Bug translates this into an equivalent sector specification ❏ Passes the sector specification on to the controller to initiate the transfer If the conversion from blocks to sectors yields a fractional sector count, an error is returned and no data is transferred.The device probe mechanism utilizes the SCSI commands “Inquiry” and “Mode Sense”. If the specified controller is non-SCSI, the probe simply returns a status of “device present and unknown”. The device probe makes an entry into the device descriptor table with the pertinent data. After an entry has been made, the next time a probe is done it simply returns with “device present” status (pointer to the device descriptor).

Disk I/O via 177Bug Commands 

The 177Bug commands listed in the following paragraphs are provided for disk I/O. Detailed instructions for their use are found in the Debugging Package for Motorola 68K CISC CPUs User's Manual. When a command is issued to a particular controller LUN and device LUN, these LUNs are remembered by 177Bug so that the next disk command defaults to use the same controller and device. IOI (Input/Output Inquiry) This command probes the system for all possible CLUN/DLUN combinations and displays inquiry data for devices which support it. The device descriptor table has space for a maximum of 16 device descriptors. Use the IOI command to view the table or clear it if necessary.

IOP (Physical I/O to Disk)

 IOP allows you to: ❏ Read blocks of data 

❏ Write blocks of data 

❏ Format a specified device in a certain way IOP creates a command packet from the arguments you have specified, then invokes the proper system call function to carry out the operation.

IOT allows you to change any configurable parameters and attributes of the device. In addition, it allows you to view the controllers available in the system.

Payment method and delivery

Shipment: EMS,DHL,UPS & FEDEX

Payment: T/T or Western Union

Professional seller

Professional sales of major electrical brand products in the world

Overseas direct purchase of products, authentic inventory, price concessions

After sales warranty, complete models, same products, different prices and services