ballz
d78eb976cf
All references updated: - src/build.sh: PRG=nyuller.prg, D64=nyuller.d64, disk name 'ny', all grep/pgrep patterns updated, all comments updated - All 10 header files: include guards WHACK_HARE_* → NYULLER_* - C source comments: 'Whack Hare!' → 'Nyuller' - README.md: updated build command output path - GAME.md: title updated - tasks.md: all whack_hare.prg → nyuller.prg - src/AGENT_CONTEXT.md: project name updated - tools/convert_screens.py: project name updated Build artifacts renamed: whack_hare.* → nyuller.*, whack.d64 → nyuller.d64 Note: title screen image (source_images/screen_title.png) still shows 'WHACKED' logo — that's a visual asset, not a code reference.
2.7 KiB
nyuller
A C64 programming project using Oscar64
as the cross-compiler. Oscar64 is checked in as a git submodule under
./oscar64/.
Layout
.
├── oscar64/ # Oscar64 cross-compiler (git submodule)
├── build/ # Build output (gitignored)
├── docs/c64/ # Low-level C64 reference (memory map, VIC, CIA, SID, …)
├── src/ # Your C code
│ ├── helloworld.c
│ └── build.sh # Compile + run helper
├── OSCAR64.md # Notes on the Oscar64 compiler internals
└── PROG_C64.md # Notes on programming the C64 hardware
First-time setup
# 1. Clone with submodules:
git clone --recurse-submodules <this-repo-url>
# Or, if you already cloned without --recurse-submodules:
git submodule update --init --recursive
Building
cd src
./build.sh # compile main.c → build/nyuller.prg (-O1)
./build.sh -e # run in oscar64's built-in emulator (headless, fast)
./build.sh -p # PLAY: launch VICE in background (see build.sh --help)
./build.sh -v # run in VICE x64 (foreground, blocks terminal)
./build.sh -V # run in VICE x64sc (cycle-exact, foreground)
./build.sh --kill # kill any detached VICE process
./build.sh -c # just compile
./build.sh -O3 # release build (auto-ZP, outliner, aggressive inlining)
build.sh will build the oscar64 compiler automatically the first time
(it runs make -C make compiler inside ./oscar64/ if
./oscar64/bin/oscar64 doesn't exist yet).
Default test tool is the oscar64 built-in emulator (-e): it
runs headless, needs no ROMs, no display, and is fast. Every Verify
step in tasks.md uses this.
VICE 3.9 is installed at /usr/bin/ (x64, x64sc, x128,
xvic, xpet) and is available via -v / -V. It is a GUI
emulator and needs a real X11 / Wayland display to render — it
won't produce useful screenshots in this headless environment.
Use it from a real terminal session for interactive play-testing
and cycle-exact validation of raster IRQ and SID timing; don't
expect to script it.
Documentation
PROG_C64.md— how the C64 hardware actually works, from a low-level programming perspective. Start here if you want to understand what's going on under the hood.OSCAR64.md— how the Oscar64 compiler works internally, plus a C64- specific section on how to use it well (memory model, bank switching, raster IRQs, common mistakes).docs/c64/— downloaded reference material: the full Commodore 64 Programmer's Reference Guide text, Christian Bauer's canonical VIC-II paper, and per-chip reference notes.