mirror of
https://github.com/jscrane/Apple1.git
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68 lines
1.1 KiB
C++
68 lines
1.1 KiB
C++
#include <Arduino.h>
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#include <memory.h>
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#include <display.h>
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#include <serialio.h>
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#include <filer.h>
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#include <serial_kbd.h>
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#include <serial_dsp.h>
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#include <pia.h>
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#include <hardware.h>
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#include "io.h"
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#include "disp.h"
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#include "config.h"
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void io::reset() {
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_loading = false;
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_dsp.reset();
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_kbd.reset();
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_pia.reset();
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_ch = 0;
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}
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bool io::start() {
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hardware_interval_timer(10, [this]() { poll(); });
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_pia.register_portb_write_handler([this](uint8_t b) { _dsp.write(b & 0x7f); });
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_pia.register_porta_read_handler([this]() { uint8_t c = _ch; _ch = 0; return c; });
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return files.start();
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}
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void io::load() {
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if (files.more()) {
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_loading = true;
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enter(files.read());
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}
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}
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void io::enter(uint8_t key) {
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_pia.write_ca1(false);
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_ch = key | 0x80;
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_pia.write_ca1(true);
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}
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void io::poll() {
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if (_ch)
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return;
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if (_loading) {
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if (files.more())
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enter(files.read());
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else
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_loading = false;
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} else if (_kbd.available()) {
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int c = _kbd.read();
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if (c != -1)
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enter(c);
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}
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}
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void io::checkpoint(Stream &s) {
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_pia.checkpoint(s);
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_dsp.checkpoint(s);
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}
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void io::restore(Stream &s) {
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_pia.restore(s);
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_dsp.restore(s);
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}
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