mirror of
https://github.com/curioustorvald/tsvm.git
synced 2026-03-07 19:51:51 +09:00
32 lines
776 B
JavaScript
32 lines
776 B
JavaScript
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// probe bootable device
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var _BIOS = {};
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// Syntax: [Port, Drive-number]
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// Port #0-3: Serial port 1-4
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// #4+ : Left for future extension
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// Drive-number always starts at 1
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_BIOS.FIRST_BOOTABLE_PORT = [0,1]; // ah screw it
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Object.freeze(_BIOS);
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///////////////////////////////////////////////////////////////////////////////
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// load a bootsector using 'LOADBOOT'
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let portNumber = 0;
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let driveStatus = 0;
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while (portNumber < 4) {
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if (com.areYouThere(portNumber)) {
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com.sendMessage(portNumber, "LOADBOOT");
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driveStatus = com.getStatusCode(portNumber);
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if (driveStatus == 0) break;
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}
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portNumber += 1;
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}
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if (portNumber < 4) {
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eval(com.fetchResponse(portNumber).trimNull());
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}
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else {
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printerrln("No bootable medium found.");
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} |