Extract emulator state into separate struct

This commit is contained in:
pjht 2024-01-30 13:30:12 -06:00
parent e5401824c3
commit 2bd3b4e489
Signed by: pjht
GPG Key ID: CA239FC6934E6F3A

View File

@ -54,15 +54,161 @@ impl Options {
struct AltairEmulator {
textures: Textures,
option_window: Option<OptionWindow>,
state: EmuState,
}
struct EmuState {
mem: [u8; 65536],
cpu: I8080,
running: bool,
audio_tx: Sender<AudioMessage>,
options: Options,
option_window: Option<OptionWindow>,
fp_state: FrontpanelState,
}
impl EmuState {
fn handle_fp_interaction(&mut self, interaction: FrontpanelInteraction) {
self.audio_tx.send(AudioMessage::PlaySwitchClick).unwrap();
match interaction {
FrontpanelInteraction::ActionSwChanged(sw, state) => {
if self.fp_state.power() {
match sw {
frontpanel::ActionSwitch::RunStop => {
if state == SwitchState::Up {
self.running = false;
} else if state == SwitchState::Down {
self.running = true;
}
}
frontpanel::ActionSwitch::SingleStep => {
if state == SwitchState::Up {
self.run_cpu_cycle();
self.update_fp();
}
}
frontpanel::ActionSwitch::Examine => {
if state == SwitchState::Up {
// Assume M1
self.cpu.finish_m_cycle(0xC3); // JMP
self.cpu.finish_m_cycle(self.fp_state.ad_sws() as u8);
self.cpu.finish_m_cycle((self.fp_state.ad_sws() >> 8) as u8);
self.update_fp();
} else if state == SwitchState::Down {
// Assume M1
self.cpu.finish_m_cycle(0x0); // NOP
self.update_fp();
}
}
frontpanel::ActionSwitch::Deposit => {
if state == SwitchState::Up {
// Assume M1
self.mem[self.cpu.get_mem_cycle().address() as usize] =
self.fp_state.ad_sws() as u8;
self.update_fp();
} else if state == SwitchState::Down {
// Assume M1
self.cpu.finish_m_cycle(0x0); // NOP
self.mem[self.cpu.get_mem_cycle().address() as usize] =
self.fp_state.ad_sws() as u8;
self.update_fp();
}
}
frontpanel::ActionSwitch::Reset => {
if state == SwitchState::Up {
self.cpu.reset();
self.update_fp();
}
}
frontpanel::ActionSwitch::Protect => (),
frontpanel::ActionSwitch::Aux1 => (),
frontpanel::ActionSwitch::Aux2 => (),
}
}
}
FrontpanelInteraction::AdChanged(_) => (),
FrontpanelInteraction::PowerChanged(pwr) => {
if pwr {
self.audio_tx.send(AudioMessage::FanOn).unwrap();
self.cpu = I8080::new();
self.update_fp();
} else {
self.audio_tx.send(AudioMessage::FanOff).unwrap();
self.running = false;
self.fp_state.set_status(Status::empty());
self.fp_state.set_addr(0);
self.fp_state.set_data(0);
}
}
}
}
fn update_fp(&mut self) {
let cycle = self.cpu.get_mem_cycle();
self.fp_state.set_status(cycle.get_status());
match cycle {
MemCycle::Fetch(a) | MemCycle::Read(a) | MemCycle::StackRead(a) => {
self.fp_state.set_addr(a);
self.fp_state.set_data(self.mem[a as usize]);
}
MemCycle::Write(a, _) | MemCycle::StackWrite(a, _) | MemCycle::Out(a, _) => {
self.fp_state.set_addr(a);
self.fp_state.set_data(0xff);
}
MemCycle::In(a) => {
self.fp_state.set_addr(a);
self.fp_state.set_data(0);
}
MemCycle::Inta(_) => todo!(),
MemCycle::Hlta(_) => {
self.fp_state.set_addr(0xffff);
self.fp_state.set_data(0xff);
}
MemCycle::IntaHlt(_) => todo!(),
}
}
fn run_cpu_cycle(&mut self) {
let cycle = self.cpu.get_mem_cycle();
let data = match cycle {
MemCycle::Fetch(a) | MemCycle::Read(a) | MemCycle::StackRead(a) => self.mem[a as usize],
MemCycle::Write(a, d) | MemCycle::StackWrite(a, d) => {
self.mem[a as usize] = d;
0
}
MemCycle::In(_) => 0,
MemCycle::Out(_, _) => 0,
MemCycle::Inta(_) => todo!(),
MemCycle::Hlta(_) => {
self.running = false;
0
}
MemCycle::IntaHlt(_) => todo!(),
};
self.cpu.finish_m_cycle(data);
}
fn update_options(&mut self, new_opts: Options) {
self.options = new_opts;
if self.options.mute {
self
.audio_tx
.send(AudioMessage::SetVolume(0.0))
.unwrap();
} else {
self
.audio_tx
.send(AudioMessage::SetVolume(self.options.volume))
.unwrap();
}
if self.options.fan_enabled && self.fp_state.power() {
self.audio_tx.send(AudioMessage::FanOn).unwrap();
} else {
self.audio_tx.send(AudioMessage::FanOff).unwrap();
}
}
}
impl AltairEmulator {
fn new(cc: &eframe::CreationContext<'_>, audio_tx: Sender<AudioMessage>) -> Self {
let options = if cc.storage.unwrap().get_string("options").is_none() {
@ -114,61 +260,18 @@ impl AltairEmulator {
// 21: 005
Self {
textures: Textures::new(&cc.egui_ctx),
mem,
cpu,
running: false,
audio_tx,
options,
option_window: None,
fp_state: FrontpanelState::new(),
state: EmuState {
mem,
cpu,
running: false,
audio_tx,
options,
fp_state: FrontpanelState::new(),
},
}
}
fn update_fp(&mut self) {
let cycle = self.cpu.get_mem_cycle();
self.fp_state.set_status(cycle.get_status());
match cycle {
MemCycle::Fetch(a) | MemCycle::Read(a) | MemCycle::StackRead(a) => {
self.fp_state.set_addr(a);
self.fp_state.set_data(self.mem[a as usize]);
}
MemCycle::Write(a, _) | MemCycle::StackWrite(a, _) | MemCycle::Out(a, _) => {
self.fp_state.set_addr(a);
self.fp_state.set_data(0xff);
}
MemCycle::In(a) => {
self.fp_state.set_addr(a);
self.fp_state.set_data(0);
}
MemCycle::Inta(_) => todo!(),
MemCycle::Hlta(_) => {
self.fp_state.set_addr(0xffff);
self.fp_state.set_data(0xff);
}
MemCycle::IntaHlt(_) => todo!(),
}
}
fn run_cpu_cycle(&mut self) {
let cycle = self.cpu.get_mem_cycle();
let data = match cycle {
MemCycle::Fetch(a) | MemCycle::Read(a) | MemCycle::StackRead(a) => self.mem[a as usize],
MemCycle::Write(a, d) | MemCycle::StackWrite(a, d) => {
self.mem[a as usize] = d;
0
}
MemCycle::In(_) => 0,
MemCycle::Out(_, _) => 0,
MemCycle::Inta(_) => todo!(),
MemCycle::Hlta(_) => {
self.running = false;
0
}
MemCycle::IntaHlt(_) => todo!(),
};
self.cpu.finish_m_cycle(data);
}
fn show_menubar(&mut self, ui: &mut Ui) {
menu::bar(ui, |ui| {
menu::menu_button(ui, "Edit", |ui| {
@ -176,7 +279,7 @@ impl AltairEmulator {
.add_enabled(self.option_window.is_none(), Button::new("Options"))
.clicked()
{
self.option_window = Some(OptionWindow::new(ui.ctx(), self.options));
self.option_window = Some(OptionWindow::new(ui.ctx(), &self.state));
ui.close_menu();
}
if ui.button("Load binary file").clicked() {
@ -199,7 +302,7 @@ impl AltairEmulator {
match record {
ihex::Record::Data { offset, value } => {
for (i, &byte) in value.iter().enumerate() {
self.mem[offset as usize + i] = byte;
self.state.mem[offset as usize + i] = byte;
}
}
ihex::Record::StartLinearAddress(_) => todo!(),
@ -217,118 +320,33 @@ impl AltairEmulator {
}
fn show_frontpanel(&mut self, ui: &mut Ui) {
let mut fp = Frontpanel::new(&self.textures, &mut self.fp_state);
let mut fp = Frontpanel::new(&self.textures, &mut self.state.fp_state);
ui.add(&mut fp);
let interaction = fp.interaction();
if let Some(interaction) = interaction {
self.audio_tx.send(AudioMessage::PlaySwitchClick).unwrap();
match interaction {
FrontpanelInteraction::ActionSwChanged(sw, state) => {
if self.fp_state.power() {
match sw {
frontpanel::ActionSwitch::RunStop => {
if state == SwitchState::Up {
self.running = false;
} else if state == SwitchState::Down {
self.running = true;
}
}
frontpanel::ActionSwitch::SingleStep => {
if state == SwitchState::Up {
self.run_cpu_cycle();
self.update_fp();
}
}
frontpanel::ActionSwitch::Examine => {
if state == SwitchState::Up {
// Assume M1
self.cpu.finish_m_cycle(0xC3); // JMP
self.cpu.finish_m_cycle(self.fp_state.ad_sws() as u8);
self.cpu.finish_m_cycle((self.fp_state.ad_sws() >> 8) as u8);
self.update_fp();
} else if state == SwitchState::Down {
// Assume M1
self.cpu.finish_m_cycle(0x0); // NOP
self.update_fp();
}
}
frontpanel::ActionSwitch::Deposit => {
if state == SwitchState::Up {
// Assume M1
self.mem[self.cpu.get_mem_cycle().address() as usize] =
self.fp_state.ad_sws() as u8;
self.update_fp();
} else if state == SwitchState::Down {
// Assume M1
self.cpu.finish_m_cycle(0x0); // NOP
self.mem[self.cpu.get_mem_cycle().address() as usize] =
self.fp_state.ad_sws() as u8;
self.update_fp();
}
}
frontpanel::ActionSwitch::Reset => {
if state == SwitchState::Up {
self.cpu.reset();
self.update_fp();
}
}
frontpanel::ActionSwitch::Protect => (),
frontpanel::ActionSwitch::Aux1 => (),
frontpanel::ActionSwitch::Aux2 => (),
}
}
}
FrontpanelInteraction::AdChanged(_) => (),
FrontpanelInteraction::PowerChanged(pwr) => {
if pwr {
self.audio_tx.send(AudioMessage::FanOn).unwrap();
self.cpu = I8080::new();
self.update_fp();
} else {
self.audio_tx.send(AudioMessage::FanOff).unwrap();
self.running = false;
self.fp_state.set_status(Status::empty());
self.fp_state.set_addr(0);
self.fp_state.set_data(0);
}
}
}
self.state.handle_fp_interaction(interaction);
}
}
}
impl eframe::App for AltairEmulator {
fn save(&mut self, storage: &mut dyn eframe::Storage) {
eframe::set_value(storage, "options", &self.options);
eframe::set_value(storage, "options", &self.state.options);
}
fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
ctx.set_pixels_per_point(1.0);
egui::TopBottomPanel::top("menu").show(ctx, |ui| self.show_menubar(ui));
egui::CentralPanel::default().show(ctx, |ui| self.show_frontpanel(ui));
if self.running {
self.run_cpu_cycle();
self.update_fp();
if self.state.running {
self.state.run_cpu_cycle();
self.state.update_fp();
}
if let Some(option_window) = self.option_window.as_mut() {
if option_window.draw(ctx, &mut self.options) {
if option_window.draw(ctx, &mut self.state) {
self.option_window = None;
}
if self.options.mute {
self.audio_tx.send(AudioMessage::SetVolume(0.0)).unwrap();
} else {
self.audio_tx
.send(AudioMessage::SetVolume(self.options.volume))
.unwrap();
}
if self.options.fan_enabled && self.fp_state.power() {
self.audio_tx.send(AudioMessage::FanOn).unwrap();
} else {
self.audio_tx.send(AudioMessage::FanOff).unwrap();
}
}
if self.running {
if self.state.running {
ctx.request_repaint();
}
}
@ -346,14 +364,14 @@ enum OptionsCategory {
}
impl OptionWindow {
fn new(ctx: &egui::Context, options: Options) -> Self {
fn new(ctx: &egui::Context, state: &EmuState) -> Self {
Modal::new(ctx, "options_modal").open();
Self {
options,
options: state.options.clone(),
category: OptionsCategory::General,
}
}
fn draw(&mut self, ctx: &egui::Context, options: &mut Options) -> bool {
fn draw(&mut self, ctx: &egui::Context, state: &mut EmuState) -> bool {
let modal = Modal::new(ctx, "options_modal");
modal.show(|ui| {
modal.title(ui, "Options");
@ -373,10 +391,10 @@ impl OptionWindow {
}
modal.buttons(ui, |ui| {
if ui.button("Apply").clicked() {
*options = self.options;
state.update_options(self.options);
}
if modal.button(ui, "OK").clicked() {
*options = self.options;
state.update_options(self.options);
}
modal.caution_button(ui, "Cancel");
});