Yesterday was a good day! I finally recieved the reduced (we removed the PS/2 functionality, see earlier post) stage 3 boards from the fab! They look good and we are now trying to gather all components needed for this board.
I also spent alot of time on creating a GUI for the µLind simulator I created a while ago. And WOW! I am as the British would say “chuffed to bits” by the result!
It is a ImGUI/SDL2 based GUI for the simulator core I made a while back with following features:
Session and Files
- Load and save session files.
- Load hardware configuration, ROM images, and optional CompactFlash images.
- Support raw, Intel HEX, and S-record ROM formats.
- Save and restore GUI window/table layout with the session.
Execution Control
- Reset the simulated machine.
- Run, pause, and single-step instructions.
- Step over subroutine calls.
- Run until return.
- Run until a chosen address.
- Keyboard shortcuts for common debugger actions.
- Bottom status bar showing run state, PC, cycle count, and active session.
CPU and Disassembly
- Register window for CPU state and condition flags.
- Disassembly window showing address, instruction bytes, and decoded instruction text.
- Current PC highlighting.
- Improved HD6309 formatting for indexed modes, stack masks, register-pair instructions, TFM, and bit-immediate operations.
Memory Tools
- Editable hex memory grid with ASCII view.
- Adjustable row count and scrollable table.
- Jump-to-PC, jump-to-S, and jump-to-U controls.
- Follow-PC mode.
- Highlighting for PC, stack pointers, and watchpoint addresses.
- Memory map window showing mapped address ranges.
- Stack window for following S or U stack contents.
Breakpoints, Watchpoints, and Trace
- Add and remove breakpoints.
- Add read, write, or read/write watchpoints.
- Stop execution on watchpoint hits.
- Instruction trace window with newest entries at the top.
- Trace cycle counts reset on reset/clear.
Device Panels
- Memory mapper panel showing mapper presence, bank size, bank registers, selected banks, and visible windows.
- CompactFlash panel showing image path, sector count, status/error registers, selected LBA, command state, and transfer progress.
- Serial panel with terminal view, raw hex view, RX text injection, RX hex-byte injection, and TX clear.
Diagnostics
- Log window for session actions, load/save messages, run events, and debugger notifications.