Robert Allan JamesandClaude Sonnet 5
70dc8beba4
Captain Bob asked for the framebuffer cursor to render as a blinking vertical bar rather than the previous static solid-block glyph. vt100_draw_cursor() (hal/vt100.c) now fills a thin bar (cell_w()/8, min 1px, full cell height) at the cursor's left edge instead of the whole cell -- an I-beam shape. vt100_erase_cursor() is unchanged (clearing the whole cell already safely covers the narrower bar). Blinking is new in repl.c: sk_console_readline()'s idle branch toggles the cursor on/off every SK_CURSOR_BLINK_INTERVAL (50 ticks, 500ms at 100Hz) via alternating console_fb_draw_cursor()/console_fb_erase_cursor() calls, independent of the heartbeat/idle-beat mechanism the §I.9 fix just touched (deliberately not reused, to avoid recoupling to that path). Runs regardless of n, so it blinks whether sitting at a bare prompt or paused mid-edit. Every deterministic draw site (initial prompt, prompt reanchor, backspace, character echo) now goes through a new helper, sk_cursor_show(), which resets the blink cycle to "on" and redraws -- typing always shows a solid cursor, never mid-blink. Verified via the mandatory foreground 3-arch QEMU acceptance boot: amd64 (logs/20260905-021054, extensive live interactive typing including multi-line : / ; word definitions and error cases, prompts stayed correctly attached throughout), aarch64 (logs/20260905-021551), riscv64 (logs/20260905-022324) -- all three reached (zuse) ok> and shut down cleanly via BYE. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019YcT3H2PQeyujrzjqS3Var
src/
Hosted StarForth VM implementation (compiled by the root Makefile).
Bare-metal kernel sources live in src/starkernel/; FORTH word
implementations in src/word_source/; the test harness in
src/test_runner/; platform shims in src/platform/.
Entry point / interpreter core
main.c— CLI entry point, VM init, DoE mode dispatch.vm.c— interpreter loop, stacks, dictionary state (the central runtime file).vm_api.c— external VM API implementation.vm_bootstrap.c— VM bootstrap initialization.vm_debug.c— debugging utilities.vm_time.c— time-related VM operations.vm_internal.h— internal-only declarations shared across thevm_*.cfiles, not part of the publicinclude/vm_api.hsurface.repl.c— REPL read-eval-print loop.cli.c— CLI argument parsing.io.c— I/O operations.log.c— logging infrastructure.
Memory / dictionary / blocks
memory_management.c— dictionary allocator.dictionary_management.c— dictionary allocation and search.dictionary_heat_optimization.c— Loop #1 execution-heat tracking.word_registry.c— word registration system.block_subsystem.c— logical→physical block mapper.blkio_file.c,blkio_ram.c,blkio_factory.c— block I/O backends (file-backed, RAM-backed) and the factory that selects between them.stack_management.c— stack operations.
Physics-driven adaptive runtime (7 feedback loops)
physics_runtime.c— main physics coordinator.physics_hotwords_cache.c— Loop #1 hot-words caching.physics_metadata.c— per-word metadata tracking.physics_pipelining_metrics.c— Loop #4 word-transition prediction.physics_execution_hooks.c— execution instrumentation.rolling_window_of_truth.c— Loop #2 circular execution-history buffer.inference_engine.c— Loops #5/#6, statistical inference (window-width, decay-slope).ssm_jacquard.c— L8 Jacquard steady-state mode selector; consumescompudynamics.cfor tuning-word/config lookups.compudynamics.c— generic compudynamics module (cd_tuning_word(),cd_tuning_vm()); the score/UCB/reward/weight constants for the L8 adaptive table live here, not inssm_jacquard.c.heartbeat_export.c— heartbeat metrics export (CSV export function itself not yet implemented — seedocs/working/architecture/heartbeat_csv_export.md).
Math / measurement
math_portable.c— portable math functions.profiler.c— performance profiling.doe_metrics.c— Design of Experiments metrics (2^7 factorial).
Any .bak file alongside a .c file here (doe_metrics.c.bak,
inference_engine.c.bak, vm.c.bak) is a pre-edit backup left by a past
maintenance script (see scripts/remove_loop_conditionals.sh), not a
build input.