mirror of https://github.com/JorjBauer/aiie.git
44 lines
604 B
C++
44 lines
604 B
C++
#include "pia6821.h"
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PIA6821::PIA6821()
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{
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}
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PIA6821::~PIA6821()
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{
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}
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uint8_t PIA6821::read(uint8_t addr)
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{
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uint8_t rv;
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switch (addr) {
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case DDRA:
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if (cra & 0x04) { // DDR or Peripherial Interface access control
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// peripheral
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// rv = readPeripheralA();
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// FIXME continue here
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} else {
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rv = ddra;
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}
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break;
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case CTLA:
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rv = cra;
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break;
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case DDRB:
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if (crb & 0x04) {
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// rv = readPeripheralB();
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// FIXME continue here
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} else {
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rv = ddrb;
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}
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break;
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case CTLB:
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rv = crb;
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break;
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}
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return rv;
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}
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