Nexen v1.4.17 — Channel F Complete Emulation & Lynx Improvements

20+ commits | Channel F core complete | Lynx ComLynx wiring | WonderSwan & CDL test coverage

Nexen v1.4.17 delivers the complete Channel F emulation core with scanline-based rendering, accurate audio, F8 CPU fixes, and TAS editor integration. Also includes Lynx ComLynx multiplayer wiring, WonderSwan Flash/RTC test expansion, and CDL/BitUtilities benchmarks.

Added

• Channel F complete emulation core -- Scanline-based frame execution with per-line rendering, correct VBLANK timing, 8-color palette with per-row selection, accurate 4-tone audio model, F8 interrupt delivery with ICB/VBLANK/SMI vector ports (#977, #979, #976, #1125)
• Channel F SMI timer and IRQ -- PSU/SMI/DMI timer state with ports 0x20/0x21 (#974)
• Channel F TAS editor integration -- Full TAS editor layout tests for Channel F (#1011)
• Channel F DisUtils test coverage -- 159 opcode disassembly tests (#1118)
• Lynx ComLynx multiplayer wiring -- Shared ComLynx cable lifecycle and runtime wiring tests (#955)
• Lynx bank-addressing validation tests -- Commercial ROM validation matrix (#1105)
• WonderSwan Flash/RTC test coverage -- Expanded test coverage and benchmarks (#1116)
• LightweightCdlRecorder + BitUtilities tests -- Additional test coverage and benchmarks (#1117)
• TestRunner diagnostic improvements -- Named error constants, stderr diagnostics, resource cleanup (#1105)

Fixed

• Channel F F8 CPU cycle timing -- Return clock cycles not byte lengths (#1123)
• Channel F INC opcode -- Now correctly increments accumulator, not DC0 (#1124)
• Channel F F8 flag bit layout -- Complementary sign and CI/CM carry polarity (#1128)
• Channel F DisUtils opcode tables -- Corrected $88-$8e memory ALU and $8f BR7 (#1119)
• Channel F battery save removal -- Console has no battery-backed SRAM
• Lynx boot-smoke Lua tooling -- Fixed emu.stop() to emu.exit() for proper test-runner integration

Downloads

Windows

Linux

macOS (Apple Silicon)

Full Changelog: v1.4.16...v1.4.17