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*Configure SCSIDirCache

Reserves an area of RAM for the SCSIFS directory cache.

Syntax

*Configure SCSIDirCache <n>

Parameters

<n>

is the amount of memory reserved in Kbytes.

Use

Reserves an area of memory for the SCSI directory cache. Directories
are stored in the cache to speed up disc operations.

Example

Configure SCSIDirCache 4

reserves 4K for the SCSIFS

directory cache.

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Summary of Contents for SCSI 4

Page 1: ......

Page 2: ...16 Bit SCSI Controller Card Hard Disc Drives User Guide...

Page 3: ...ondence should be addressed to Customer Support SCSI Oak Cross Park House Low Green Rawdon Leeds LS19 6HA All maintenance and service on the products described in this manual must be carried out by Oa...

Page 4: ...disposed of and the appropriate plug fitted and wired as described below As the colours of the wires may not correspond with the markings identifying the terminals in your plug proceed as follows The...

Page 5: ...hester case or the fan outlet holes and make sure that there is enough space around the winchester for air to circulate Do not poke any objects through the ventilation holes in the winchester casing R...

Page 6: ...l 1 What is SCSI 3 Installing the Hard Disc Podule 5 Initial Testing 11 Using Your Oak SCSI Winchester 13 Commands 15 Using SCSIFORM Format Configure Utility 29 Running Illegal Software 41 Booting fro...

Page 7: ......

Page 8: ...clicking Pressing and releasing a mouse button twice in quick succession is known as double clicking Pressing and holding down a mouse button whilst moving the mouse is known as dragging Text to be t...

Page 9: ...ust be substituted e g f ilename means that an actual filename must be supplied indicates that the item enclosed in square brackets is optional e g WPROT D U means that the letter U is an optional par...

Page 10: ...bus SCSI devices should therefore provide 2 SCSI connections effectively a SCSI in and a SCSI out to allow further devices to be attached to the bus SCSI winchester drives include their own in built...

Page 11: ...ype of device up to a maximum of 7 on the SCSI bus however the Filecore module within Risc OS allows a filing system SCSIFS in the case of the Oak SCSI controller card to have only 4 winchesters and a...

Page 12: ...ired are a number 2 cross head screwdriver and a large flat bladed screwdriver A3000 only Installation of internal drives may also require a pair of wire cutters or scissors and a blade Safety Ensure...

Page 13: ...ng plate use the single width blanking plate T Piece and screws supplied with your SCSI card to build the podule backplate up to double width Carefully insert the SCSI card component side up into the...

Page 14: ...drive move on to the section headed installing an internal winchester If your kit contains an external winchester drive replace the cover of the Archimedes don t refit the screws yet and move on to th...

Page 15: ...00 is disconnected from the mains Holding the SCSI card horizontally with the angle bracket pointing upwards and towards the A3000 push the card into the socket on the left hand side of the A3000 when...

Page 16: ...r on the SCSI controller card making sure that polarising bumps slots mate correctly at the winchester end and that the bump on the 50 way cable points to the front of the Archimedes at the SCSI card...

Page 17: ...that the polarising bumps on the cable sockets mate with the slots on the plugs at the rear of the Archimedes and the Winchester There are two 50 way plugs on the rear of the winchester drive to allow...

Page 18: ...DO NOT USE THE SCSIFORM PROGRAM AT THIS STAGE All the options you can set using SCSIFORM have already been set at the factory Using SCSIFORM before you are familiar with the system is more likely to...

Page 19: ...t to ADFS s configure dir nodir and is effective only if the configured filing system is SCSIFS If you want the root directory set type configure scsidir Return otherwise type configure scsinodir Retu...

Page 20: ...hester to be changed To change the name of the winchester wipe across the namedisc option and either edit the current name or delete and retype it Note that you must not have 2 SCSI winchesters with t...

Page 21: ...ertain pieces of software which make illegal assumptions about filing systems To get around this problem the command KillADFS is available as documented in the section headed commands which attempts t...

Page 22: ...SI winchesters work under a filecore type filing system i e like ADFS and RAMFS and so use all the normal filing system commands e g copy Additional commands provided by the SCSI system are documented...

Page 23: ...CSI drive Syntax SCSIMap Use This command basically gives the mapping between the SCSI drive numbers 4 to 7 and SCSI device ID Logical Unit Numbers and additionally returns the block size the size of...

Page 24: ...elects the SCSI filing system as the filing system for subsequent operations Remember that it is not necessary to switch filing systems if you use the full pathnames for objects e g you can refer to a...

Page 25: ...n eeprom The use of this command can be locked out with the format configure utility and if this has been done a write protect locked error will result if you try changing the protection on a locked d...

Page 26: ...the current filing system Syntax KillADFS Use All calls to ADFS are redirected to SCSIFS but note that as SCSIFS has no floppy drives access to the floppies other than via ADFS_Disc0p as used by PC e...

Page 27: ...oes the effects of a KillADFS Syntax UnKillADFS Use Reverses the effects of a KillADFS and allows calls to ADFS to be processed by the ADFS filing system This command does not reset the current filing...

Page 28: ...SIFS winchester at power on N B for technical reasons this option appears twice in the status display Syntax configure SCSIDir Use Sets the Root directory of the configured SCSIFS winchester as the cu...

Page 29: ...S directory is selected at power on N B for technical reasons this option appears twice in the status display Syntax Configure SCSINoDir Use Leaves SCSIFS with no current directory at power on This is...

Page 30: ...onfigure SCSIDirCache n Parameters n is the amount of memory reserved in Kbytes Use Reserves an area of memory for the SCSI directory cache Directories are stored in the cache to speed up disc operati...

Page 31: ...s n SCSI drive number 4 to 7 Use Sets the number of the drive which will automatically be selected at power on if SCSIFS is the configured filing system or when SCSIFS is first entered The most common...

Page 32: ...eset Syntax Configure SCSIFS n Parameters n if n 1 or is not present then enable SCSIFS if n 0 then disable SCSIFS Use Enables n 1 or not present or disables n 0 SCSIFS after next hard reset Example C...

Page 33: ...FileSystem n I name Parameters n filing system number 26 for SCSIFS name filing system name e g SCSI Use This command is not provided by the SCSI card but is included here to show how to configure SC...

Page 34: ...SWIs and technical information Sec the file SCSI_INFO on the formatter disc for details of SWIs provided by the SCSI card and for additional technical information Page 27...

Page 35: ...Page 28...

Page 36: ...dge of both Rise OS and SCSI Users without a sound knowledge of these fields are advised not to use SCSIFORM if possible as the results of doing something wrong can be quite drastic The menu options w...

Page 37: ...the drive to be write protected Y write protected N unprotected WPROT Lock Whether or not you want the write protect status to be alterable via the WPROT command Y locked N alterable via WPROT STOP U...

Page 38: ...R Remove drive This option removes a SCSI drive from the SCSIFS system Information required by SCSIFORM is as follows Drive Number SCSI drive number of the drive you wish to remove 4 to 7 Page 31...

Page 39: ...er card which stores the information about the connected drives and the drive configurations All information currently stored on the EEPROM is deleted so effectively all drives are removed Note that t...

Page 40: ...ces This option scans the SCSI bus for information about all devices currently connected Information returned for each device includes SCSI Id numbers device names storage capacities block sizes and s...

Page 41: ...e sector interleave factor Normally enter a value of 1 A value of 2 will give improved speed performance in hi res colour screen modes such as 21 at the cost of reduced performance in other modes with...

Page 42: ...already initialised Information required by SCSIFORM is as follows Are you sure This gives you a last chance to abort before initialising the map and root directory of the drive think before you answe...

Page 43: ...ormation required by SCSIFORM is as follows Timeout period Time in centiseconds allowed for SCSI drives to spin up to speed If a drive does not respond to the SCSI card after the specified timeout per...

Page 44: ...C Check SCSI devices against EEPROM This option checks that the block and map sizes of the devices connected to the SCSI bus match those it knows about in the EEPROM and reports accordingly Page 37...

Page 45: ...as within the wimp task manager and assigning a large slot size to SCSIFORM or by running SCSIFORM from outside the desktop with memory sizes configured to minimum values The speed test requires the A...

Page 46: ...Q Quit This option quits the SCSIFORM application Note upper case Q required Page 39...

Page 47: ...commands This option allows commands to be issued from the SCSIFORM program Press Return when you have finished issuing commands to return to the main menu Page 40...

Page 48: ...sumption is sometimes made in HDInstall type programs supplied with certain packages in that the are designed to copy the relevant files from ADFS drive 0 to ADFS drive 4 If you come across a program...

Page 49: ...time of the slowest drive in the system This avoids delays in reporting subsequent errors or attempts to mount non existent additional drives in particular when doing Bye as FileCore Mounts drives be...

Page 50: ...ot The configured filing system should be SCSIFS configure filesystem SCSI The configured SCSIDrive should be the one on which your boot file exists e g configure SCSIDrive 4 The Configured SCSI drive...

Page 51: ...ly but no response from drive Check power connections to winchester Check that 50 way cable is firmly connected at each end If you have ignored earlier warnings about running the SCSIFORM program and...

Page 52: ...same ID number These errors can also be caused by an unterminated SCSI bus or a SCSI bus with too many termination resistors The SCSI bus should have terminating resistors in the devices at each end...

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