Apple1-esp/io.cpp
Stephen Crane 05f50a18fd
Serial display (#11)
* extract disp from io

* extract screen_disp

* working

* ...

* working

* refactor

* config
2024-08-29 07:03:46 +01:00

72 lines
1.0 KiB
C++

#include <Arduino.h>
#include <memory.h>
#include <display.h>
#include <serialio.h>
#include <filer.h>
#include <serial_kbd.h>
#include <serial_dsp.h>
#include <pia.h>
#include <timed.h>
#include "io.h"
#include "disp.h"
#include "hardware.h"
#include "config.h"
void io::reset() {
_dsp.reset();
_kbd.reset();
_loading = false;
PIA::reset();
}
bool io::start() {
return files.start();
}
void io::load() {
if (files.more()) {
_loading = true;
enter(files.read());
}
}
void io::enter(uint8_t key) {
PIA::write_ca1(false);
PIA::write_porta_in(key + 0x80);
PIA::write_ca1(true);
}
void io::write_portb(uint8_t b) {
b &= 0x7f;
_dsp.write(b);
PIA::write_portb(b);
}
uint8_t io::read_cra() {
if (_loading) {
if (files.more())
enter(files.read());
else
_loading = false;
} else if (_kbd.available()) {
int c = _kbd.read();
if (c != -1)
enter(c);
}
return PIA::read_cra();
}
void io::checkpoint(Stream &s) {
PIA::checkpoint(s);
_dsp.checkpoint(s);
}
void io::restore(Stream &s) {
PIA::restore(s);
_dsp.restore(s);
}