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by guenthert
762 days ago
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> The PC game port is a nearest thing to intentional GPIO that PC has. Er, what? Not every IBM PC (clone) had a (sound) card with joystick ports, but almost every PC clone had (ISA, later PCI) extension slots. There were/are plenty of digital i/o adapter cards for those available, from plain, cheap 8255 based ones to those with slave CPUs (potentially more powerful than the host's CPU). But then, perhaps I don't understand what you mean by 'intentional' GPIO. |
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