Original Ohio Scientific motherboard designs used 7400-series ACIA chip and a Motorola MC6821 ( PIA ) chip for the Disk Drive Controller, which made OSI 8 " & 5-1 / 4 " Floppy Disks unreadable by other computer systems.
12.
A Windows machine has 16 IRQ lines, but since virtually every device ( keyboard, port, mouse, disk drive controller, sound card, etc . ) requires at least one unique number, multimedia machines often come with no free interrupts or just one.
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The Japanese electronics manufacturer said it had reached a preliminary settlement in a class-action lawsuit filed in March by two U . S . users of Toshiba portable computers who said the floppy-disk drive controllers are faulty, distorting or losing information written onto disks.
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The Japanese electronics manufacturer said Friday that it had reached a preliminary settlement in a class-action lawsuit filed in March by two U . S . users of Toshiba portable computers who said the floppy-disk drive controllers are faulty, distorting or losing information written onto disks.
