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feat(serial): support disconnected Joybus configuration and local registers

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0xrsydn 2026-10-07 06:36:54 +07:00
commit 7546d17630
15 changed files with 462 additions and 62 deletions
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docs/architecture.md
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@ -75,11 +75,13 @@ The repository is a Cargo workspace with three crates:
| `crates/gba-core/tests/pulse_sound/channel2.rs` | Channel 2 mapping, register gaps, independent state, shared clocks, and sum-before-rounding mixing |
| `crates/gba-core/tests/direct_sound.rs` | FIFO lanes/reset, signed mixing, timer selection, DMA refill, and HALT/STOP |
| `crates/gba-core/src/memory/audio_step_tests.rs` | Audio access phases, shadow validation, and CPU/DMA failure rollback |
| `crates/gba-core/src/io/serial.rs` | Disconnected normal serial shifter, internal clocks, external waiting, idle multiplayer registers, GPIO latches, and live-write validation |
| `crates/gba-core/src/io/serial.rs` | Disconnected normal serial shifter, internal clocks, external waiting, idle multiplayer and local Joybus registers, GPIO latches, and live-write validation |
| `crates/gba-core/tests/inactive_devices.rs` | Device masks, wave RAM, GPIO pull-ups, serial data, and failed CPU/DMA write isolation |
| `crates/gba-core/tests/serial_control.rs` | RCNT mode gating, inactive bits, byte/halfword lanes, CPU/DMA diagnostics, and interrupt isolation |
| `crates/gba-core/tests/serial_external.rs` | External-clock waiting, cancellation, HALT/STOP, ARM/Thumb/DMA starts, and atomic diagnostics |
| `crates/gba-core/tests/serial_internal.rs` | Nominal bit edges, widths/rates, cancellation, completion IRQs, HALT/STOP, and live-write limits |
| `crates/gba-core/tests/serial_joybus.rs` | Local Joybus masks/data, pending status, inactive IRQs, mode gating, HALT/STOP, DMA, and padding diagnostics |
| `crates/gba-core/src/memory/joybus_step_tests.rs` | Joybus ARM/Thumb stores, staged reads, normal completion boundaries, and failed block-store isolation |
| `crates/gba-core/tests/serial_multiplayer.rs` | Disconnected child status, receive/send lanes, mode aliases, ignored child start, HALT/STOP, and ARM/Thumb/DMA access |
| `crates/gba-core/src/memory/multiplayer_step_tests.rs` | Multiplayer mode changes at normal completion, block-transfer preflight, staged reads, and atomic diagnostics |
| `crates/gba-core/src/memory/serial_step_tests.rs` | Serial bus-phase observations, preflight validation, DMA, IF ordering, capture isolation, and rollback |