Changelog

All notable changes to bench51. The format follows Keep a Changelog and versions follow Semantic Versioning.

0.2.0 - 2026-11-01

bench51-gui, a desktop IDE laid out like Keil µVision: menus, toolbar, Project window, editor with breakpoint and error gutter, Build Output, and in a debug session the Registers, Disassembly, Memory, Symbols, UART #1, Ports, Timers and Interrupts windows. Windows dock and tab anywhere; the edit and debug layouts are remembered separately.
Monochrome, dot-matrix design in dark and light themes (follows the system by default), with Space Grotesk, Space Mono and Doto bundled.
µVision's keys (F7, Ctrl-F5, F5, F10/F11, Ctrl-F10/F11, F9) with the TUI's as aliases; find (Ctrl-F); inline memory editing; clickable SFR bits and port pins; drag-and-drop to open files.
Prebuilt releases for Linux (x86_64, aarch64), Windows (x86_64) and macOS (Apple silicon, Intel), with one-line installers: install.sh for Linux and macOS, install.ps1 for Windows.
CI on Linux, Windows and macOS.

The assembler, simulator and debugger session moved into a shared bench51-core crate used by both front ends. The terminal app behaves as before.
Unsafe code is forbidden across the workspace.

bench51, a terminal (TUI) 8051 IDE: editor, two-pass assembler for the full instruction set with Keil-style listing and Intel HEX output, simulator with timers, interrupts, UART and ports, and a debugger with breakpoints, stepping and memory poke.
Headless assembly with bench51 --assemble.
Opening Intel HEX files as disassembled, re-assemblable source.