repo2/firmware_eclairexl/atari_drive_emulator.h
| 46 | markw | #pragma once
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// In principle the drive emulator itself just needs to have access to files from somewhere and then serves requests from the Atari.
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// So it doesn't need to depend on fat, just needs a way of reading the specified 'file'
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// So entry points are:
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// i) Provide function ptr to: fetch data, check file size
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// ii) Notify when disk has been changed/removed
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// iii) Drive - called frequently so we can respond to commands received from Pokey
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// To speak to the Atari we need:
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// a) Command line
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// b) Pokey
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// Both these are mapped into zpu config regs
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void actions(); // this is called whenever possible - should be quick
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void init_drive_emulator();
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void run_drive_emulator(); // Blocks. Pokey at its fastest is 6 cycles * 10 bits per byte. i.e. 60 cycles at 1.79MHz.
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// To remove a disk, set file to null
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// For a read-only disk, just have no write function!
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struct SimpleFile;
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void set_drive_status(int driveNumber, struct SimpleFile * file);
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| 69 | markw | struct SimpleFile * get_drive_status(int driveNumber);
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| 62 | markw | void describe_disk(int driveNumber, char * buffer);
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| 46 | markw | ||
| 348 | markw | // Pokey divisor
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char const * get_turbo_drive_str();
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