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Appendix D: ASCII character codes

Hold down either <ALT> key and type in the corresponding ASCII character codes on the
numeric keypad on the right-hand side of the keyboard. The following are shown using
Trinity.Medium font.

Содержание R7500

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Страница 3: ...d for use as a critical component in life support devices or any system in which failure could be expected to result in personal injury RiscStation Ltd accept no liability for loss of data or the consequences as a result direct or otherwise of using this equipment 1 ...

Страница 4: ...efore opening the unit e g to install an upgrade Switch off and unplug the unit if you are not going to use it for a few days Installation This equipment is for indoor use only in a dust free and dry environment Do not expose this equipment to sudden extremes in temperature direct sunlight or other heat sources Stand the equipment on a level hard surface allowing enough space for air to circulate ...

Страница 5: ...e the fuse in the mains plug supplied then you must use a 5A fuse ASTA approved to BS1362 Information for Australia and New Zealand This equipment should be fitted with a plug that complies with the requirments of AS3112 1990 and NZ 198 1967 If the plug fitted does not fit your socket outlet it should be removed and disposed of A suitable alternative plug should then be fitted following the instru...

Страница 6: ...f previous versions of RISC OS might just wish to familiarise themselves with those features new in RISC OS 4 see Appendix A The following areas will be covered Chapter Subject 1 Unpacking and setting up 2 Switching on 3 The RISC OS desktop 4 Using the mouse 5 Windows 6 Menus and dialogue boxes 7 Discs and disc drives 8 Using the keyboard 9 Using applications 10 Files and directories 11 Printing 1...

Страница 7: ...are kept well out of reach Checklist With your RiscStation R7500 you should have the following items This Welcome Guide Backup System CD Computer Base Unit Tower or Desktop style Keyboard Three buttoned Mouse Mains cables Registration Card Monitor Display if purchased with system Speakers with some models Software pack where applicable Refer to the enclosed packing list for a precise list Please c...

Страница 8: ... Welcome Guide This is meant as a guide only the simple message being that if you intend working for extended periods of time do make yourself comfortable Setting up the computer The various input output and control devices which connect to your computer such as keyboard mouse and monitor are peripherals Each of these peripherals connects to the computer via a socket known as a port These ports ar...

Страница 9: ...nd the mouse via the upper socket on the Desktop model or the left socket on the Tower model If you wish to make use of the support for waking the computer up on various events such as the press of a wake button on the keyboard then the keyboard and mouse must be connected this way round Be careful to ensure that the connector is inserted the right way around the top of the plug is indicated by an...

Страница 10: ...witch on the wall in case of extreme emergency Allow space around your computer equipment for cooling ventilation Connect the computer to the mains power supply If the plug supplied is not suitable for the power supply in your country please consult your supplier Do not attempt to repair or replace the mains cord yourself refer to your supplier instead Do not operate this equipment if any cables a...

Страница 11: ...ted and release Boot procedure When you switch the computer on you will see the following as it goes through its start up procedure known as booting a black screen which shows and then reports the various essential software components being added in the start up sequence This is accompanied by a system beep 9 ...

Страница 12: ... a welcome banner acknowledging the combined efforts and contributions from Pace Micro Technologies plc RISCOS Ltd and RiscStation Ltd the computer enters the desktop ready for use 10 ...

Страница 13: ...ures on the left hand side of the Icon Bar give you access to the computer s various storage areas Those on the right hand side allow you to dynamically change aspects of the computer during operation this is also where most application icons sit when active You may click SELECT the left button on the mouse with the mouse pointer on any of the icons on the left hand side of the Icon Bar to open a ...

Страница 14: ...e an indication of the type of file by the picture used Notice the up turned bottom right hand corner indicating that these are files documents this is the icon for a closed folder directory this is the icon for an open folder directory Folders all folders look alike Folders or directories can be created to give your hard disc order Folders can be created within other folders to make a heirarchica...

Страница 15: ...e a folder and which function co operatively to perform a certain function e g running a program An application can be identified by an exclamation mark at the start of its name and an application icon picture to identify the program s function The names of some files usually those within an application folder might also begin with an exclamation mark Device Icons A device is an object such as a h...

Страница 16: ...pplications held in ROM Random Access Memory Filing System temporary storage space in the computer s memory which is lost when the power is switched off incorrectly referred to as a RAMdisc Application Icons The right hand side of the Icon Bar is generally used to show when a computer program also known as an application is active by displaying its icon there and also to allow you to control the p...

Страница 17: ...o line up the movement of the mouse with the positioning of the monitor so that when you move the mouse forwards away from you towards the monitor the pointer on screen moves towards the top of the screen and when you pull the mouse back towards you away from the monitor the pointer on screen moves down towards the bottom of the screen Equally as you move the mouse to the right the pointer on scre...

Страница 18: ...e configuration tool the pointer will revert to the default icon If you click the mouse a second time whilst the pointer icon is in its double headed state then this is considered a double click For example A single click of SELECT on a device icon on the Icon Bar such as the Hard disc or Floppy disc will open a filer directory window showing the content of that device A single click of SELECT on ...

Страница 19: ...ws open on screen simultaneously Double clicking with SHIFT Double clicking on an application whilst holding down the SHIFT key opens the application directory rather than activating the program This allows you to access resources within the application Double clicking on a file whilst also holding down the SHIFT key will open that file into a text editor rather than load the file into an applicat...

Страница 20: ...or moving and organizing the content of your computer s storage devices re shuffling data on hard discs or floppy discs for example Using SELECT will keep the windows of the source object open whereas using ADJUST to perform these dragging operations will close the source directory window as part of the process In a very short space of time all of this will become second nature as you regularly us...

Страница 21: ...ls allow you to control each window and organise and arrange the desktop as you use it The window tools are always the same type for each window When a particular window is the current focus of input then that window s tools will be highlighted in yellow You can have many windows open in the desktop at any one time These windows will be stacked one in front of the other It is possible to shuffle t...

Страница 22: ...which the hard disc is connected HardDisc is that name which has been given to the hard disc which can be renamed if you prefer the sign indicates the root of the device directory and each folder within the hierarchical structure is separated by a full stop When an active document window is the current focus of input its title bar is highlighted in yellow Click SELECT on the Back icon of a window ...

Страница 23: ...n you are manipulating multiple windows Remember that you can have many windows open on screen at any one time and that these windows are in a stack even if there is a window filling the screen there might well be other windows behind it in the stack which you might want to access quickly Toggling the size of a window is a quick and easy way of getting to all the other windows or to the Icon Bar I...

Страница 24: ...can also be configured so that when the mouse is brought to the bottom of the screen and held there momentarily the Icon Bar is brought to the front of the stack This option is active by default and can be deactivated in the Mouse section of the computer s configuration Here you can also specify how long you must hold the pointer at the bottom of the screen before the Icon Bar pops to the front If...

Страница 25: ...ical movement at the same time Click on a Scroll icon up down left or right with single clicks of the mouse to move a window s content in the appropriate direction Using SELECT will move it in the direction in which the Scroll icon points using ADJUST will move it in the opposite direction this saves having to move the pointer large distances since you can use the same Scroll icon to move in two d...

Страница 26: ...ile you are scrolling through is say a text file you might consider using the up down left and right arrow cursor keys or the Page Up Page Down Home top or End bottom keys to navigate through the document as an alternative method 24 ...

Страница 27: ...by clicking either SELECT or ADJUST If you use SELECT then the menu option is chosen and the menu will disappear if you use ADJUST to make your selection then the menu option is chosen but the menu will remain open on screen for you to make further selections Choosing a submenu Some menus have sub menus A sub menu is a secondary menu which offers further options for a particular menu item To open ...

Страница 28: ... with an Option icon another name for this might be a tick box if you wish to choose such an option you simply put a tick in the box Due to the flexibility of RISC OS which allows for user customisation some application software might activate their own preferred icons temporarily superimposing them over the ones built into the operating system such modifications can affect any or all sprites used...

Страница 29: ... options then you will see the Menu icon Clicking SELECT on a Menu icon will reveal a drop down list of options from which you may make your selection Applying the changes you ve made When you see a button inside a window which says OK you may either click on it using SELECT Some applications will allow you to press the RETURN key or the ENTER key on the keyboard to confirm your acceptance of the ...

Страница 30: ...ce it is ready for use Before ejecting a floppy disc make sure that you dismount it Since the floppy disc is a removable storage medium and the computer remembers the disc s content until you dismount it or switch off the computer in order to make repeated access of the disc easier and faster so you should tell the computer that the floppy disc is being removed otherwise it retains the information...

Страница 31: ... open a filer directory window showing the content of that floppy disc You can access the information stored on a floppy disc in just the same way as you would access information from the hard disc or any filer directory window relating to other storage devices Files can be saved or copied to floppy disc or deleted and directory structures can be created deleted or moved in the usual way Write pro...

Страница 32: ... and DOS Windows or Mac OS PCs then you should use the DOS format option since all of these computers can understand floppy discs using this format RISC OS can also use the Atari format but this is less commonplace The native RISC OS format is quicker for reading from and writing to The setting up of a floppy disc for use with a particular computer is known as formatting it Most floppy discs come ...

Страница 33: ... followed by a green progress bar as it verifies the formatted disc Once both cycles have completed you are prompted to click on the OK button to finish the format procedure Floppy disc formats and storage sizes Floppy discs are limited in that they have a small capacity less than 2MegaBytes and they are quite slow at accessing the information stored on them but they are useful for their portabili...

Страница 34: ...t to Apple Macintosh formatted floppy discs Renaming a floppy disc Floppy discs may be given names of up to ten characters in length It is useful to give floppy discs meaningful names to help identify their content or purpose You will see the name of the floppy disc in the Title Bar of the filer directory window of that disc Click MENU on the floppy disc drive icon on the Icon Bar Move up the list...

Страница 35: ...the Format submenu Move up the Format submenu list to the Current format option and follow the arrow to its submenu The computer will then interrogate the floppy disc to check its current format and then report it to you in a window It is a good idea to write protect your source disc before you start the backup procedure so that no data is accidentally lost just in case you have the wrong disc in ...

Страница 36: ...n Bar with SELECT or ADJUST to open the root filer directory window Your hard disc will have already been formatted and essential software installed for you Re formatting the hard disc as with floppy disc will wipe it clean of the information on the disc Once formatted the information which was previously on the hard disc cannot be recovered WARNING Do not format you hard disc unless you are certa...

Страница 37: ...ot Resources Internet files contains all manner of translation information between file extensions filetypes and internet MIME data types It is intended that the MimeMap file be the single location of such mapping information so that any application can benefit from the information stored there This prevents the need for each application to have its own translation table DOSFS In line with CDFS ab...

Страница 38: ...usually used by individual programs and software applications and have specific functions when used in conjunction with specific software titles which will be outlined in their own user instructions In general terms some of these keys have designated functions which tend to remain constant in their use no matter what the program or application these keys can and often are re assigned by different ...

Страница 39: ...riters where the carriage literally had to return to the right hand side of the typewriter so that you could type the next line When Caps Lock is pressed it toggles switches on or off the use of lower or upper case type upper case again a reference to its use in describing the mechanics of typewriters A light at the top right hand side of the keyboard shows the status of Caps Lock If the light is ...

Страница 40: ... keys to perform certain functions ALT like SHIFT and CTRL by itself does nothing rather it is used in conjunction with other keys to perform certain functions One main feature of using the ALT key is in conjunction with the numeric keypad to access characters which do not appear on the keyboard such as and letters with accents as found in foreign languages ä ë ï ö ü for example These are known as...

Страница 41: ...ny games for controlling the actions of the game The Cursor Keys can also be used in conjunction with SHIFT and CTRL In a word processing application for example holding down SHIFT and repeatedly pressing a cursor key would highlight a portion of text whereas holding down CTRL and repeatedly pressing a cursor key would move the cursor in large steps a word at a time say Numeric Keys The keys of th...

Страница 42: ... the Icon Bar to the front or back of the stack CTRL f12 Open a task window CLI in the Desktop CTRL SHIFT f12 Shutdown R Power On Perform a Soft reset if CMOS is unprotected Del Power On Perform a Hard reset if CMOS is unprotected As an example if you had typed in a document a letter for instance and saved already and your Printer software was active you could save print then close it quite quickl...

Страница 43: ...nd side of the Icon Bar and its functionality can be control from the icon Some applications might not place an icon on the Icon Bar other might simply function running in the background Using applications Let s take Help for example It is a useful program to provide basic interactive help for the user Click SELECT on the ROMAPPS icon on the Icon Bar and the filer directory window will open showin...

Страница 44: ...ide of the window notice how the Help application identifies for you the function of each tool it can provide similar help for other programs provided they have been written to utilise Help Using more than one application window Help does not have its own document windows rather it has pop up labels to identify the name or function of other items in the desktop Draw on the other hadn is a good exa...

Страница 45: ...on Bar click MENU move up the list to the Quit option and then click SELECT to quit With some software title if you have any open documents in that application which have not been saved or which have had alterations made to them since the last time you saved you will be prompted to save by the appearance of a dialogue box asking if you want to save the document discard it or cancel the instruction...

Страница 46: ...eference or desired functionality Once the computer has booted properly and is operating in the Desktop double clicking SELECT on Boot will activate the computer s configuration program Although RISC OS resides primarily in ROM the operating system software is held in Read Only Memory chips supplementary resources resident on the hard disc can be added to provide extended functionality or personal...

Страница 47: ...directory folder icon An open filer directory folder icon Creating a new directory Open the filer directory window in which you want the new directory to be created Position the pointer inside that filer directory window Click MENU and move down the list to the New directory option Follow the arrow to the submenu and type in a name for the new directory in the writable icon alternatively you might...

Страница 48: ... on the file icon and it will be loaded into the application which created it If there is more than one application present on your computer which can handle the same type of file then it could be loaded into whichever the system has seen first or whichever is already active To specify an application to load a file into you can drag the file icon onto the active application icon on the Icon Bar Co...

Страница 49: ...e Path length too long for Filer to remedy this either rename the file using a shorter name or move it higher up the filer heirarchy where the pathname will use fewer character whilst retaining the same filename You may not use illegal characters such as in naming files since these are used by RISC OS Whilst enjoying the ability to give your files and directories long names which can help in ident...

Страница 50: ... file to the disc icons to the left of the Icon Bar and your computer will save the file to that disc This can be especially useful if you have a RAM disc set up as this feature makes it an ideal temporary location for downloaded files or incomplete work At present this feature has not been implemented to work with EIDE IDEFS or SCSI the RiseStation R7500 uses IDEFS as its hard disc filing system ...

Страница 51: ...ted number of items within each filer directory and permitting very long filenames it would be easy for your hard disc to become cluttered and disorganised It is recommended that some structure be applied to the content of your hard disc to keep your files and directories in line with a structured system so that you can quickly and easily find the documents and resources you need when you need to ...

Страница 52: ...The best advice is to keep things as simple and logical as possible to make it easier for you to find the information you wish to keep and retrieve 50 ...

Страница 53: ... to set it up for your particular make and model of printer and save the settings for subsequent occasions Once your Printers application has been configured appropriately and the configuration options have been saved then the Printers icon will appear on the Icon Bar in colour Load a printer driver In order for the printer to understand the information being sent to it the Printers application ne...

Страница 54: ...yboard will bring up on screen the printer dialogue box for the application in which you are currently working When this window appears you will have the option of printing for which you can simply press RETURN adding certain conditions such as how many pages and orientation etc depending on the application or cancelling the print command Another method of printing drag and drop If you have a docu...

Страница 55: ...ave a shutdown warning then press Shutdown or Cancel as required Alternatively you could use the combination of keys CTRL SHIFT f12 as a shortcut Now switch off the computer by pressing in and holding the Power button until you hear the TWO beeps you will also hear the hard drive stop spinning If you attempt to shutdown whilst there are still applications active with unsaved data then you will be ...

Страница 56: ...ng the web browser provided As you progress and develop your skills and interest in using your RISC OS computer you might consider joining a local Acorn User Group reading one or more of the popular RISC OS speciality magazines or other relevant publications or even subscribing to the various RISC OS Acorn newsgroups on the Internet Do not be afraid to ask your local RiscStation dealer for advice ...

Страница 57: ... over the main window allows you to load and save the whole set of CMOS internal to your computer settings to make it easier to bring back your system should it be necessary to reset it to its factory defaults You can also load the Help utility and reset your machine back to its factory settings The Boot Tool This offers a way of setting up how your system boots up The Boot sequence tool consists ...

Страница 58: ...other options this enables you to upgrade your Boot should a new version be released by RiscStation Ltd Finally the Desktop boot file button allows you alter your startup file manually Taking the Add to Apps window as an example it works as follows The majority of the window is taken up by a scrolling list of applications and directories Those shown in grey greyed out are special folders or applic...

Страница 59: ...xactly the same way System folders applications are shown in grey and cannot be removed whilst applications and folders can be added removed by the user and are shown in colour The Discs tool Your RiscStation computer uses the EIDE interface not the basic IDE interface as in most RISC OS computers The IDE hard discs and SCSI discs options are greyed since they are not present in this computer The ...

Страница 60: ...faster The ADFS buffers option has a similar performance benefit ADFS discs in your computer can have key bits of data buffered in your computer s memory to speed up the accessing of files Finally CDFS buffers are very similar to ADFS buffers except that they cache data from CDs making CD access much quicker The Filer tool Large icons shows files with full size icons and is the usual way of lookin...

Страница 61: ...ile operations so don t disable it unless you re sure The Fonts tool The Desktop font is used to display all text on windows and menus It is very much a matter of personal preference which font you choose The Cache bitmaps and Anti alias options are inter related You cannot anti alias sizes above that for which you cache bitmaps Cacheing a font causes it to be remembered at a particular size and w...

Страница 62: ...essages how long you have to leave your pointer over things before the help is displayed and whether or not common messages about windows scrollbars and other desktop features are displayed RISC OS 4 provides an online Help system which provides context sensitive help on icons windows and menus displaying help at the pointer The Help utility is fully compatible with all existing helpful applicatio...

Страница 63: ...s the icon itself becoming greyed out Help on the Help utility itself looks like this The Hard disc Lock tool This tool allows you to protect your hard disc with a password It also prevents the computer s configuration settings from being changed without the password having been entered Discs which are protected only allow access to the Public folder and certain other areas where some applications...

Страница 64: ...sed to for that session only until a new password is set In general you should only consider locking your system if you need to restrict others from deleting content from your hard disc or from altering the computer s settings otherwise it is better left unlocked The Mouse tool 62 ...

Страница 65: ...is now the right mouse button Drag delay The Drag delay is the length of time that you have to hold your mouse button down before a drag is initiated if you don t move your mouse Drag start distance The Drag start distance is the alternative way of initiating a drag and determines how far you have to move your mouse to start one Double click delay The Double click delay is the maximum time between...

Страница 66: ...three separate sections AUN This stands for Acorn Universal Networking and is designed to support Acorn s AUN Level 4 networking structure These are often found in schools Access This is the peer to peer networking protocol used by RISC OS machines It allows drives and printers to be shared around a local network It is quick and easy to set up and is the system of choice for many small RISC OS net...

Страница 67: ... if you are running ImageFS 2 it will allow the use of almost any type of image If you plan to use a high colour image in a low colour depth mode then you may wish to convert it with ChangeFSl beforehand as this usually gives better colour rendition through dithering If you are short on memory or simply want a non intrusive background you can specify a non patterned plain colour Holding down the s...

Страница 68: ...lly The location you tidy to can be set via the Options menu This makes it much easier to organise your Pinboard Changing the text colour If you have a very light background selected having the text associated with pinboard icons displayed in white can make them difficult to see To improve visibility RISC OS 4 allows you to set the colour used in the Pinboard Configure tool Single colour backdrops...

Страница 69: ...features a standardised Screensave protocol This allows screen savers to be plugged into your system easily A range of savers is supplied as standard with RISC OS 4 Some screen savers may have options associated with them Click the Settings button to alter these Below this you can select the length of time taken before the screen saver is activated Please note that if you are running single taskin...

Страница 70: ...ster clock rate to 44 1KHz ifor improved playback quality of sampled audio e g from a music CD The System tool If an application comes with its own System folder drag it here to update the System folder on your hard disc the new modular software contained within the new System folder will be copied into the correct place in the active System folder inside your Boot structure You should only have o...

Страница 71: ... To the right of these options you can set which sides of the display allow windows to slide off screen Disabling this makes the workable area of the Desktop much smaller When your Icon Bar becomes full it will scroll left and right when you move the pointer to each end The Icon bar scrolling settings allow you to set the scroll speed and acceleration Underneath these options are a variety of othe...

Страница 72: ...OM icon Some legacy applications come supplied with low resolution versions of the standard desktop sprites and try to load them in on top of the RISC OS 4 set With this option ticked the standard sprites will never be replaced protecting your high resolution icons Iconise button With this option selected windows will be displayed with a button to iconise them in the top right hand corner just nex...

Страница 73: ...rd and other similar windows Note that the only time you might want the grey boxes is if the text colour you have selected isn t visible with your background graphic However it might be easier just to change the text colour in the Pinboard setup tool Fully 3D icon bar Without this option set the 3D window borders would only be set on the top and bottom of the icon bar because a full icon bar can s...

Страница 74: ...ton to switch to the selected mode the screen fades out then in again If you set the monitor type incorrectly the display might look greatly distorted or you might simply get no picture displayed at all please take a look at the Troubleshooting section at the back of this guide to remedy matters if this happens Euro support Unlike earlier versions of RISC OS RISC OS 4 supports the Euro symbol in a...

Страница 75: ...e RED jumper makes you can leave the jumper attached to just one pin without it making the connection In order to do this it will mean opening the computer s case to access the jumper which is located on the motherboard as illustrated Once this method of configuration protection has been implemented it means that even when submitted to a DEL Power on Hard reset you compuer will not lose its config...

Страница 76: ...tection software to maintain a comprehansive level of protection Warning The virus will not enter your computer but will still be on the floppy disc or other media Additional software is required to remove a virus you should not attempt this manually yourself because there may be malicious side effects triggered by deleting the files Two shareware applications which will eradicate viruses can be f...

Страница 77: ...ASCII character codes Hold down either ALT key and type in the corresponding ASCII character codes on the numeric keypad on the right hand side of the keyboard The following are shown using Trinity Medium font 75 ...

Страница 78: ...ers can either be entered via the keyboard or selected using the mouse from the Chars application located in Apps on the Icon Bar The chosen character will be entered into a document or writable icon at the carat 76 ...

Страница 79: ... The rate at which data is transferred usually in megabits per second or kilobits persecond Bus A path over which digital information is transferred from any of several sources to any of several destinations The sources and destinations may be inside or utside the computer Byte A group of eight bits A byte is usually used to represent single character or digit Cache Very fast memory made from SRAM...

Страница 80: ...ccess Memory a storage device which requires data to be continually regenerated DSP Acronym for Digital Signal Processor a high speed general purpose arithmetic unit used for performing complex mathematical operations such as Fourier transforms EIDE Enhanced IDE see also IDE SCSI Ethernet A cable based communications network designed to link office equipment originated by Xerox Corporation FPU Acr...

Страница 81: ...ndard for the digital compression and decompression of still images for use in computer systems Kilobit 1 024 bits often abbreviated to Kb Kilobyte 1 024 bytes often abbreviated to KB LAN Acronym for Local Area Network A communications network whereby computers can transfer data amongst themselves LED Acronym for Light Emitting Diode A diode that emits light when current flows through it LFAU Acro...

Страница 82: ...p A standard for the digital compression and decompression of motion video audio for use in computer systems Multimedia The combination of text graphics audio and video Nanosecond ns One billionth of a second In this time electrical pulses travel approximately 12 inches OEM Acronym for Original Equipment Manufacturer A company that designs develops and produces or simply assembles electronic hardw...

Страница 83: ...truction Set Computer A device where the number of instructions a microprocessor runs for a specific application are reduced from a general purpose Complex Instruction Set Computing CISC device to create a more efficient operating system see also CISC RISC OS The name of the computer operating system originally designed by Acorn Computers for use exclusively with ARM RISC processors ROM Acronym fo...

Страница 84: ...puters from mainframes and workstations to personal computers in various forms e g Linux and BSD VDU Acronym for Visual Display Unit see also Monitor VGA Acronym for Video Graphics Adaptor see also SVGA WIMP Acronym for Windows Icons Menu Pointer the operational features of the Desktop 82 ...

Страница 85: ...t matter which way round the keyboard and mouse are connected but the wake on keypress feature will only work if the keyboard is plugged into the lower socket Keyboard lower 6 pin Mini DIN socket Pin Function 1 Keyboard data in out 2 NC 3 GND 4 5V Supply 250mA FUSED 5 Keyboard clock in 6 NC PS 2 MOUSE Upper 6 pin Mini DIN socket Pin Function 1 Mouse data in out 2 NC 3 GND 4 5V Supply 250mA FUSED 5...

Страница 86: ...omputers on the network The front panel HD LED used for both hard disk and network activity will light when data intended for your computer is received External Serial port This port implements a standard RS232 interface using 12V switching The standard MALE 9 way D type plug connector has the following pinout Pin Function 1 DCD in 2 RX in 3 TX out 4 DTR out 5 GND 6 DSR in 7 RTS out 8 CTS in 9 RI ...

Страница 87: ... RED 0 7v peak to peak VIDEO 2 GREEN 3 BLUE 4 NC 5 GND 6 GND red return 7 GND green return 8 GND blue return 9 5V supply 200mA fused 10 GND 11 ID 0 in out 12 DDC data 10v scart slow switching see LK14 in out OR 10v out 13 HSYNC out 14 VSYNC CSYNC out 15 DDC clock in out Should a SCART type monitor need to be driven the jumper cap on LK14 should be set to position 1 2 to route the high voltage to p...

Страница 88: ...ay female D type socket has the following pinout Pin Function 1 STROBE out 2 D 0 in out 3 D 1 in out 4 D 2 in out 5 D 3 in out 6 D 4 in out 7 D 5 in out 8 D 6 in out 9 D 7 in out 10 ACKNOWLEDGE in 11 BUSY in 12 PAPER END in 13 SELECT in 14 AUTO FEED out 15 ERROR in 16 RESET out 17 SELECT IN out Pins 18 25 are all GND 86 ...

Страница 89: ...Line in input feeds stereo audio from an external sound source to the Audio codec where it may be sampled or mixed with the other sound sources The Mic input will drive either a mono electret carbon or moving coil microphone and feed it s input to the input Audio codec for sampling or mixing When using a carbon or moving coil mic the extra microphone gain stage may need to be enabled to compensate...

Страница 90: ...MIC TIP Phantom feed Mic in Ring Mic bias Sleeve GROUND MIDI Joystick connector 88 ...

Страница 91: ...e your speakers switched on Some speakers use mains power so you must ensure they are switched on before any sound will be produced Make sure your speakers are plugged in and switched on Do the speakers have a volume control If so make sure the volume knob is turned up enough to allow you to hear sound coming from the computer Also check at the back of the computer to make sure the audio connectio...

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