The Mux: Difference between revisions
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→Controller
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2 composite inputs to the matrix are dead. | 2 composite inputs to the matrix are dead. | ||
== | ===controller=== | ||
'''1''' - +5V power | '''1''' - +5V power | ||
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'''9''' - Station/Net Tuner common control line (I2C Clock) | '''9''' - Station/Net Tuner common control line (I2C Clock) | ||
==explanation of operation== | |||
This was originally based around a PIC16F84 with an 8MHz crystal containing code written by Rob Sprowson. The hex file as loaded into the PIC can be found here[[https://ystv.york.ac.uk/~documents/docs_resources/StationDocumentation/muxController_sprow.hex]] whilst a partial disassembly of it can be found here [[https://ystv.york.ac.uk/~documents/docs_resources/StationDocumentation/muxController_sprow.doc]]. Also available is a disassembled version of the ROM code [[https://ystv.york.ac.uk/~documents/docs_resources/StationDocumentation/schedula_rom_disassembled.txt]] from within the BBC micro that used to be part of Schedula. | This was originally based around a PIC16F84 with an 8MHz crystal containing code written by Rob Sprowson. The hex file as loaded into the PIC can be found here[[https://ystv.york.ac.uk/~documents/docs_resources/StationDocumentation/muxController_sprow.hex]] whilst a partial disassembly of it can be found here [[https://ystv.york.ac.uk/~documents/docs_resources/StationDocumentation/muxController_sprow.doc]]. Also available is a disassembled version of the ROM code [[https://ystv.york.ac.uk/~documents/docs_resources/StationDocumentation/schedula_rom_disassembled.txt]] from within the BBC micro that used to be part of Schedula. | ||