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Содержание RB2/PC-1

Страница 1: ...USERGUIDE FORTNE BBC Micro Model B Version...

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Страница 3: ...Connecting Up Para 4 Software Description Para 5 Loading and running the Utilities Software Para 6 Loading and running drawing program Paintball 1 Para 7 Transferring to disc Para 8 Specification Para...

Страница 4: ...accurate the Tracker Ball is in positioning the cursor on a video display For the more advanced user this booklet contains technical information which explains how the Tracker Ball works and ways in w...

Страница 5: ...BBC Micro Model B version and contains three user assignable buttons which can replace existing keyboard key functions or act as additional keys specially assigned by the user The tape cassette suppli...

Страница 6: ...w about connecting up the BBC Micro cassette player disc drive unit and monitor or television set Before connecting up the Tracker Ball make sure that the electrical supply is disconnected or switched...

Страница 7: ...on of the demonstration drawing program on SIDE 1 1 Utilities Program This allows the user to substitute Tracker Ball a As cursor control in place of cursor keys This is particularly good with Wordwis...

Страница 8: ...e utilities must not be loaded into a memory location used by the joystick program to be run The utilities program helps here by offering the user a choice of memory locations likely to be available T...

Страница 9: ...d colour A further push on the button selects the next colour and so on NOTE The colour selected cannot be a colour already on screen Text Text can be typed in from the keyboard at any time If the tex...

Страница 10: ...sitioning the cursor inside the shape and pressing a select button To stop filling press ESCAPE key Note It is only possible to fill over the background colour that is the colour shown ON in the botto...

Страница 11: ...an explanation of the system Next an initial menu option is offered 1 Proceed to UTILITIES 2 Pass straight to demonstration drawing Paintball 3 Look at an EDIT DEMO Disc version only If UTILITIES is...

Страница 12: ...er BREAK is pressed is always an indication that the Utility is present You are now ready to load the main joystick program in the normal way If TBALL is selected Menu options are offered in a similar...

Страница 13: ...program may be run normally without upsetting the utility Pressing BREAK or SHIFT BREAK on most programs will not usually affect it Only CTRUBREAK will remove the utility 2 If the memory location cho...

Страница 14: ...eady to draw using the Tracker Ball Hints 1 When FILLING if a colour leaks then press ESCAPE to stop filling 2 Erasing If a mistake is made it can be erased by drawing solid oblongs or triangles in th...

Страница 15: ...ins a version of the Utilities and Paintball suitable for transferring to disc To help you do this a disc making program is included at the beginning of the tape To load type T RETURN Then CH Once the...

Страница 16: ...g proportional to the vector quantities derived from the ball s movement The pulses are shaped internally such that the final output of the Tracker Ball is 2 trains of square wave pulses for each of t...

Страница 17: ...Buttons Operating temperature Storage temperature 200mm 7 87 in 115mm 4 53 in 70mm 2 76 in 600gm 21 12oz 57mm 2 25 in Brown Ivory 30gm 1 06 oz Tangential force on ball periphery 200 pulses 5 for 1 ful...

Страница 18: ...y connector compatible with BBC Micro User Port 5Vdc 5 60mA max from user port of BBC Micro Model B Standard 5V TIL levels Encoded square wave outputs are quadrature coded to provide directional infor...

Страница 19: ...PBO Left switch button PB1 Middle switch button PB2 Right switch button PB3 X2 PB4 Y1 PB5 PB6 PB7 not used 5V Power Connection OV Power Connection An occasional clean and polish of the ball is normall...

Страница 20: ...Marconi Electronic Devices Power Division Carholme Road Lincoln LN1 1SG Tel 0522 29992 Telex 56163...

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