DebugReportWriter.java

    private static final DateTimeFormatter HEADER_TIMESTAMP = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");

        Files.createDirectories(directory);

        final SystemSnapshot snapshot = report.snapshot();

        final PpuSnapshot ppu = snapshot.ppu();

        if (report.screenshotRgb() != null){

            writePng(directory.resolve("screenshot.png"), report.screenshotRgb());

        writePng(directory.resolve("framebuffer-partial.png"), report.partialFrameRgb());

        Files.writeString(directory.resolve("description.txt"), report.description(), StandardCharsets.UTF_8);

        Files.writeString(directory.resolve("state.txt"), formatState(report), StandardCharsets.UTF_8);

        final int[] ram = snapshot.ram();

        Files.write(directory.resolve("ram.bin"), ByteUtil.toBytes(ram));

        Files.writeString(directory.resolve("ram.hex.txt"), hexDump(ram), StandardCharsets.UTF_8);

        Files.write(directory.resolve("oam.bin"), ByteUtil.toBytes(ppu.oam()));

        Files.write(directory.resolve("nametables.bin"), ByteUtil.toBytes(ppu.nametableRam()));

        Files.write(directory.resolve("palette.bin"), ByteUtil.toBytes(ppu.paletteRam()));

        Files.write(directory.resolve("prg-ram.bin"), ByteUtil.toBytes(snapshot.mapper().prgRam()));

        if (snapshot.mapper().chrRam().length > 0){

            Files.write(directory.resolve("chr-ram.bin"), ByteUtil.toBytes(snapshot.mapper().chrRam()));

        final SaveMetadata metadata = new SaveMetadata(SaveType.LIVE_SNAPSHOT,

                report.capturedAt().atZone(ZoneId.systemDefault()).toInstant(), 0);

        SaveFileFormat.writeLiveSnapshot(directory.resolve(directory.getFileName() + ".sav"), metadata, snapshot);

    }

        final MOS6502Snapshot cpu = report.snapshot().cpu();

        final PpuSnapshot ppu = report.snapshot().ppu();

        final StringBuilder out = new StringBuilder();

        out.append("EmuRoxLab debug snapshot\n");

        out.append("ROM:      ").append(report.romName()).append('\n');

        out.append("Captured: ").append(HEADER_TIMESTAMP.format(report.capturedAt())).append("\n\n");

        out.append("--- CPU ---\n");

        out.append(CpuStateText.registers(cpu)).append('\n');

        out.append("Flags: ").append(CpuStateText.flags(cpu)).append("  (NV-BDIZC, uppercase = set)\n");

        out.append(CpuStateText.interruptLines(cpu)).append("\n\n");

        out.append("--- Next instructions ---\n");

        boolean first = true;

        for (final DisassembledInstruction instruction : report.upcomingInstructions()){

            out.append(CpuStateText.instruction(instruction, first)).append('\n');

            first = false;

        }

        out.append('\n');

        final PpuSnapshot.Timing timing = ppu.timing();

        final PpuSnapshot.Registers registers = ppu.registers();

        out.append("--- PPU ---\n");

        out.append(String.format("Scanline: %d  Dot: %d  VBlank: %s%n", timing.scanline(), timing.dot(), yesNo(timing.vblankFlag())));

        out.append(String.format("PPUCTRL: $%02X  PPUMASK: $%02X  OAMADDR: $%02X%n",

                registers.control(), registers.mask(), registers.oamAddress()));

        out.append(String.format("v: $%04X  t: $%04X  fine X: %d  write toggle: %d%n", registers.currentVramAddress(),

                registers.temporaryVramAddress(), registers.fineXScroll(), registers.writeToggle() ? 1 : 0));

        out.append("Sprite overflow: ").append(yesNo(ppu.sprites().spriteOverflow()))

                .append("  Sprite 0 hit: ").append(yesNo(ppu.sprites().spriteZeroHitFlag())).append("\n\n");

        out.append("--- Mapper ---\n");

        if (report.mapperState().isEmpty()){

            out.append("(fixed mapping, no bank registers)\n");

        for (final Map.Entry<String, String> entry : report.mapperState().entrySet()){

            out.append(entry.getKey()).append(": ").append(entry.getValue()).append('\n');

        }

        return out.toString();

        return value ? "yes" : "no";

        return HexDump.format(address -> bytes[address], 0, bytes.length - 1, false);

        final BufferedImage image = new BufferedImage(SCREEN_WIDTH, SCREEN_HEIGHT, BufferedImage.TYPE_INT_RGB);

        image.setRGB(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, rgb, 0, SCREEN_WIDTH);

        ImageIO.write(image, "png", path.toFile());

    }