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Allow enabling LocalTalk bridge from the command line #382

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Merged
twvd merged 1 commit into from
Sep 27, 2026
Merged

Allow enabling LocalTalk bridge from the command line #382

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2 changes: 1 addition & 1 deletion docs/src/manual/network/ltoudp.md
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ Snow supports bridging LocalTalk over UDP multicast ('LToUDP'), compatible with
real Mac hardware through an adapter such as the [TashTalk](https://github.com/lampmerchant/tashtalk).

By default, MacOS will use serial port B for LocalTalk. To enable LToUDP, enable the bridge through the
'Ports' -> 'Channel B (printer)' -> 'Enable LocalTalk bridge'.
'Ports' -> 'Channel B (printer)' -> 'Enable LocalTalk (UDP)', or start Snow with `--serial-bridge-b localtalk`.

![LToUDP menu](../../images/ltoudp_menu.png)

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4 changes: 3 additions & 1 deletion frontend_egui/src/app.rs
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Expand Up @@ -318,9 +318,11 @@ impl SnowGui {
Some(SerialBridgeConfig::Pty)
} else if let Some(port_str) = mode.strip_prefix("tcp:") {
port_str.parse::<u16>().ok().map(SerialBridgeConfig::Tcp)
} else if mode == "localtalk" {
Some(SerialBridgeConfig::LocalTalk)
} else {
log::warn!(
"Invalid serial bridge mode: '{}'. Use 'pty' or 'tcp:PORT'",
"Invalid serial bridge mode: '{}'. Use 'pty', 'tcp:PORT' or 'localtalk'",
mode
);
None
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6 changes: 4 additions & 2 deletions frontend_egui/src/main.rs
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Expand Up @@ -64,12 +64,14 @@ struct Args {
zen: bool,

/// Enable serial bridge on SCC channel A (modem port).
/// Values: "pty" for PTY mode (Unix only), "tcp:PORT" for TCP mode
/// Values: "pty" for PTY mode (Unix only), "tcp:PORT" for TCP mode,
/// "localtalk" for LocalTalk over UDP
#[arg(long, value_name = "MODE")]
serial_bridge_a: Option<String>,

/// Enable serial bridge on SCC channel B (printer port).
/// Values: "pty" for PTY mode (Unix only), "tcp:PORT" for TCP mode
/// Values: "pty" for PTY mode (Unix only), "tcp:PORT" for TCP mode,
/// "localtalk" for LocalTalk over UDP
#[arg(long, value_name = "MODE")]
serial_bridge_b: Option<String>,

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