mirror of
https://github.com/jscrane/r65emu.git
synced 2024-07-26 19:29:09 +00:00
58 lines
917 B
C++
58 lines
917 B
C++
#include <Arduino.h>
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#include "memory.h"
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#include "serialio.h"
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#include "acia.h"
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void ACIA::write(Memory::address a, uint8_t b) {
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if (a & 1)
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write_data(b);
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else
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write_control(b);
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}
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void ACIA::write_control(uint8_t b) {
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if ((b & cd_mask) == reset) {
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acia_reset();
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return;
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}
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switch (b & ws_mask) {
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case ws7e2:
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acia_framing(SERIAL_7E2);
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break;
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case ws7o2:
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acia_framing(SERIAL_7O2);
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break;
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case ws7e1:
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acia_framing(SERIAL_7E1);
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break;
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case ws7o1:
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acia_framing(SERIAL_7O1);
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break;
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case ws8n2:
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acia_framing(SERIAL_8N2);
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break;
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case ws8n1:
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acia_framing(SERIAL_8N1);
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break;
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case ws8e1:
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acia_framing(SERIAL_8E1);
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break;
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case ws8o1:
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acia_framing(SERIAL_8O1);
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break;
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};
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}
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uint8_t ACIA::read(Memory::address a) {
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if (a == 0)
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return read_status();
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if (a == 1)
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return read_data();
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return 0;
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}
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uint8_t ACIA::read_status() {
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return acia_more()? rdrf | tdre: tdre;
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}
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