tinyforge/memory-viewer.html at master · obasille/tinyforge · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>TinyForge Memory Viewer</title>
  <style>
    * { margin: 0; padding: 0; box-sizing: border-box; }

    body {
      font-family: 'Consolas', 'Monaco', monospace;
      background: #1a1a1a;
      color: #e0e0e0;
      padding: 20px;
    }

    h1 {
      font-size: 18px;
      margin-bottom: 20px;
      color: #4a9eff;
    }

    .controls {
      display: flex;
      gap: 10px;
      margin-bottom: 20px;
      flex-wrap: wrap;
      align-items: center;
    }

    .control-group {
      display: flex;
      gap: 5px;
      align-items: center;
    }

    label {
      font-size: 12px;
      color: #999;
    }

    input, select, button {
      padding: 6px 12px;
      background: #2a2a2a;
      border: 1px solid #444;
      color: #e0e0e0;
      border-radius: 3px;
      font-family: inherit;
      font-size: 12px;
    }

    input[type="text"] {
      width: 120px;
    }

    button {
      cursor: pointer;
      background: #3a3a3a;
    }

    button:hover {
      background: #4a4a4a;
    }

    .memory-regions {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      gap: 10px;
      margin-bottom: 20px;
    }

    .region-btn {
      padding: 8px;
      cursor: pointer;
      border: 1px solid #444;
      background: #2a2a2a;
      color: #e0e0e0;
      border-radius: 3px;
      text-align: left;
      font-size: 11px;
    }

    .region-btn:hover {
      background: #3a3a3a;
    }

    .region-btn strong {
      display: block;
      color: #4a9eff;
      margin-bottom: 4px;
    }

    .memory-display {
      background: #0a0a0a;
      border: 1px solid #333;
      border-radius: 4px;
      padding: 10px;
      max-height: 70vh;
      overflow-y: auto;
      font-size: 13px;
      line-height: 1.5;
    }

    .memory-row {
      display: flex;
      gap: 15px;
      padding: 2px 0;
      border-bottom: 1px solid #1a1a1a;
    }

    .memory-row:hover {
      background: #1a1a1a;
    }

    .address {
      color: #666;
      width: 80px;
      flex-shrink: 0;
    }

    .hex-bytes {
      display: flex;
      gap: 4px;
      flex: 1;
    }

    .byte {
      cursor: pointer;
      padding: 0 2px;
    }

    .byte:hover {
      background: #2a2a2a;
    }

    .byte.highlight {
      background: #4a9eff33;
      color: #4a9eff;
    }

    .ascii {
      color: #888;
      width: 200px;
      flex-shrink: 0;
    }

    .stats {
      margin-top: 20px;
      padding: 10px;
      background: #2a2a2a;
      border-radius: 4px;
      font-size: 11px;
      color: #999;
    }

    .error {
      color: #ff6b6b;
      padding: 10px;
      background: #3a1a1a;
      border: 1px solid #5a2a2a;
      border-radius: 4px;
      margin-bottom: 20px;
    }

    .edit-dialog {
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      background: #2a2a2a;
      border: 1px solid #444;
      border-radius: 4px;
      padding: 20px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.5);
      z-index: 1000;
    }

    .edit-dialog input {
      width: 100px;
      margin: 10px 0;
    }

    .dialog-buttons {
      display: flex;
      gap: 10px;
      margin-top: 10px;
    }

    .overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0,0,0,0.7);
      z-index: 999;
    }

    .hidden {
      display: none;
    }
  </style>
</head>
<body>
  <div id="error" class="error hidden"></div>

  <div class="controls">
    <div class="control-group">
      <label>Address:</label>
      <input type="text" id="address-input" value="0x080000" placeholder="0x000000">
    </div>
    <div class="control-group">
      <label>Bytes:</label>
      <select id="bytes-count">
        <option value="256" selected>256</option>
        <option value="512">512</option>
        <option value="1024">1024</option>
        <option value="2048">2048</option>
        <option value="4096">4096</option>
      </select>
    </div>
    <button id="refresh-btn">Refresh</button>
    <button id="auto-refresh-toggle">Auto-Refresh: OFF</button>
    <div class="control-group" style="gap: 2px;">
      <button id="first-page" title="First Page">⏮</button>
      <button id="prev-page" title="Previous Page">◀</button>
      <button id="next-page" title="Next Page">▶</button>
      <button id="last-page" title="Last Page">⏭</button>
    </div>
    <div class="control-group">
      <label>Search:</label>
      <input type="text" id="search-input" placeholder="0x1A2B3C or 1A2B3C" style="width: 150px;">
      <button id="search-btn">Find</button>
      <button id="search-next" style="display: none;">Next</button>
      <label style="font-size: 11px; margin-left: 10px;">
        <input type="checkbox" id="search-from-current">
        From current address
      </label>
      <span id="search-results" style="font-size: 11px; color: #999; margin-left: 20px;"></span>
    </div>
  </div>

  <div class="memory-regions" id="memory-regions">
    <!-- Regions will be populated from memory-map.json -->
  </div>

  <div class="memory-display" id="memory-display"></div>

  <div class="stats" id="stats">
    <span id="stats-text">No memory loaded</span>
  </div>

  <!-- Edit dialog -->
  <div id="edit-overlay" class="overlay hidden"></div>
  <div id="edit-dialog" class="edit-dialog hidden">
    <h3>Edit Byte</h3>
    <div>Address: <span id="edit-address"></span></div>
    <input type="text" id="edit-value" placeholder="0xFF" maxlength="4">
    <div class="dialog-buttons">
      <button id="edit-save">Save</button>
      <button id="edit-cancel">Cancel</button>
    </div>
  </div>

  <script type="module">
    import * as memoryMap from './dist/memory-map.js';

    let memory = null;
    let currentAddress = 0x080000;
    let bytesToShow = 256;
    let autoRefresh = false;
    let autoRefreshInterval = null;
    let editingAddress = null;
    let searchMatches = [];
    let currentSearchIndex = -1;
    let searchPatternLength = 0;

    // Try to connect to parent window memory
    function connectToMemory() {
      if (window.opener && window.opener.getMemory) {
        try {
          memory = window.opener.getMemory();
          if (memory) {
            document.getElementById('error').classList.add('hidden');
            loadMemoryRegions();
            refreshMemory();
            return true;
          }
        } catch (e) {
          console.warn('Failed to get memory:', e);
        }
      }

      document.getElementById('error').textContent =
        'Not connected to TinyForge. Open this from the main console using "Open Memory Viewer" button.';
      document.getElementById('error').classList.remove('hidden');
      return false;
    }

    // Load memory region buttons from memory-map.json
    async function loadMemoryRegions() {
      try {
        const container = document.getElementById('memory-regions');
        const regions = [
          { name: 'Framebuffer Start', addr: memoryMap.FB_START, size: 256 },
          { name: 'Framebuffer End', addr: memoryMap.FB_START + memoryMap.FB_SIZE - 256, size: 256 },
          { name: 'Game RAM Start', addr: memoryMap.RAM_START, size: 256 },
          { name: 'Keyboard Input', addr: memoryMap.INPUT_ADDR, size: 16 },
          { name: 'Mouse Input', addr: memoryMap.MOUSE_ADDR, size: 16 },
        ];

        regions.forEach(region => {
          const btn = document.createElement('button');
          btn.className = 'region-btn';
          btn.dataset.address = '0x' + region.addr.toString(16);
          btn.dataset.size = String(region.size);

          const endAddr = region.addr + Math.min(region.size, 256);
          btn.innerHTML = `
            <strong>${region.name}</strong>
            ${formatAddress(region.addr)} - ${formatAddress(endAddr)}
          `;

          btn.addEventListener('click', () => {
            currentAddress = region.addr;
            bytesToShow = region.size;
            document.getElementById('address-input').value = '0x' + region.addr.toString(16);
            document.getElementById('bytes-count').value = String(region.size);
            refreshMemory();
          });

          container.appendChild(btn);
        });
      } catch (e) {
        console.warn('Failed to load memory regions:', e);
      }
    }

    function parseAddress(str) {
      const cleaned = str.trim().toLowerCase();
      if (cleaned.startsWith('0x')) {
        return parseInt(cleaned, 16);
      }
      return parseInt(cleaned, 10);
    }

    function formatAddress(addr) {
      return '0x' + addr.toString(16).toUpperCase().padStart(6, '0');
    }

    function formatByte(byte) {
      return byte.toString(16).toUpperCase().padStart(2, '0');
    }

    function isMatchAddress(addr) {
      // Check if this address is part of any search match
      for (const matchAddr of searchMatches) {
        if (addr >= matchAddr && addr < matchAddr + searchPatternLength) {
          return true;
        }
      }
      return false;
    }

    function refreshMemory() {
      if (!memory) {
        connectToMemory();
        return;
      }

      const display = document.getElementById('memory-display');
      const stats = document.getElementById('stats-text');
      display.innerHTML = '';

      try {
        const view = new Uint8Array(memory.buffer);
        const totalSize = view.byteLength;

        // Clamp address and size
        const startAddr = Math.max(0, Math.min(currentAddress, totalSize - 1));
        const endAddr = Math.min(startAddr + bytesToShow, totalSize);
        const actualBytes = endAddr - startAddr;

        // Display memory in rows of 16 bytes
        for (let addr = startAddr; addr < endAddr; addr += 16) {
          const row = document.createElement('div');
          row.className = 'memory-row';

          // Address column
          const addrSpan = document.createElement('span');
          addrSpan.className = 'address';
          addrSpan.textContent = formatAddress(addr);
          row.appendChild(addrSpan);

          // Hex bytes column
          const hexContainer = document.createElement('span');
          hexContainer.className = 'hex-bytes';

          let ascii = '';
          for (let i = 0; i < 16 && (addr + i) < endAddr; i++) {
            const byte = view[addr + i];
            const byteSpan = document.createElement('span');
            byteSpan.className = 'byte';

            // Highlight if part of a search match
            if (isMatchAddress(addr + i)) {
              byteSpan.classList.add('highlight');
            }

            byteSpan.textContent = formatByte(byte);
            byteSpan.dataset.address = addr + i;
            byteSpan.addEventListener('click', () => openEditDialog(addr + i, byte));
            hexContainer.appendChild(byteSpan);

            // ASCII representation
            ascii += (byte >= 32 && byte <= 126) ? String.fromCharCode(byte) : '.';
          }
          row.appendChild(hexContainer);

          // ASCII column
          const asciiSpan = document.createElement('span');
          asciiSpan.className = 'ascii';
          asciiSpan.textContent = ascii;
          row.appendChild(asciiSpan);

          display.appendChild(row);
        }

        stats.textContent = `Memory: ${(totalSize / 1024).toFixed(1)} KB | Showing: ${actualBytes} bytes from ${formatAddress(startAddr)}`;
      } catch (e) {
        document.getElementById('error').textContent = `Error reading memory: ${e.message}`;
        document.getElementById('error').classList.remove('hidden');
      }
    }

    function openEditDialog(address, currentValue) {
      editingAddress = address;
      document.getElementById('edit-address').textContent = formatAddress(address);
      document.getElementById('edit-value').value = '0x' + formatByte(currentValue);
      document.getElementById('edit-dialog').classList.remove('hidden');
      document.getElementById('edit-overlay').classList.remove('hidden');
      document.getElementById('edit-value').focus();
      document.getElementById('edit-value').select();
    }

    function closeEditDialog() {
      document.getElementById('edit-dialog').classList.add('hidden');
      document.getElementById('edit-overlay').classList.add('hidden');
      editingAddress = null;
    }

    function saveEdit() {
      if (editingAddress === null || !memory) return;

      try {
        const value = parseAddress(document.getElementById('edit-value').value);
        if (value < 0 || value > 255) {
          alert('Value must be between 0x00 and 0xFF');
          return;
        }

        const view = new Uint8Array(memory.buffer);
        view[editingAddress] = value;
        closeEditDialog();
        refreshMemory();
      } catch (e) {
        alert('Invalid value: ' + e.message);
      }
    }

    function parseSearchPattern(str) {
      // Remove spaces and 0x prefix
      let cleaned = str.trim().replace(/\s+/g, '').toLowerCase();
      if (cleaned.startsWith('0x')) {
        cleaned = cleaned.substring(2);
      }

      // Must be even number of hex digits
      if (cleaned.length % 2 !== 0) {
        throw new Error('Search pattern must have even number of hex digits');
      }

      // Convert to byte array
      const bytes = [];
      for (let i = 0; i < cleaned.length; i += 2) {
        const byte = parseInt(cleaned.substring(i, i + 2), 16);
        if (isNaN(byte)) {
          throw new Error('Invalid hex pattern');
        }
        bytes.push(byte);
      }

      return bytes;
    }

    function searchMemory() {
      if (!memory) return;

      const searchInput = document.getElementById('search-input').value;
      if (!searchInput.trim()) {
        alert('Please enter a search pattern');
        return;
      }

      try {
        const pattern = parseSearchPattern(searchInput);
        const view = new Uint8Array(memory.buffer);
        searchMatches = [];
        searchPatternLength = pattern.length;

        // Determine start address based on checkbox
        const searchFromCurrent = document.getElementById('search-from-current').checked;
        const startAddr = searchFromCurrent ? currentAddress : 0;

        // Search for pattern in memory
        for (let addr = startAddr; addr <= view.byteLength - pattern.length; addr++) {
          let match = true;
          for (let i = 0; i < pattern.length; i++) {
            if (view[addr + i] !== pattern[i]) {
              match = false;
              break;
            }
          }
          if (match) {
            searchMatches.push(addr);
          }
        }

        // Update UI
        const resultsEl = document.getElementById('search-results');
        const nextBtn = document.getElementById('search-next');

        if (searchMatches.length > 0) {
          currentSearchIndex = 0;
          resultsEl.textContent = `Found ${searchMatches.length} match${searchMatches.length > 1 ? 'es' : ''}`;
          nextBtn.style.display = searchMatches.length > 1 ? 'inline-block' : 'none';
          goToSearchMatch(0);
        } else {
          resultsEl.textContent = 'No matches found';
          nextBtn.style.display = 'none';
          currentSearchIndex = -1;
        }
      } catch (e) {
        alert('Search error: ' + e.message);
      }
    }

    function goToSearchMatch(index) {
      if (index < 0 || index >= searchMatches.length) return;

      currentSearchIndex = index;
      const matchAddr = searchMatches[index];

      // Navigate to match (center it in view if possible)
      currentAddress = Math.max(0, matchAddr - Math.floor(bytesToShow / 2));
      document.getElementById('address-input').value = formatAddress(currentAddress);

      // Update results text
      const resultsEl = document.getElementById('search-results');
      resultsEl.textContent = `Match ${index + 1} of ${searchMatches.length} at ${formatAddress(matchAddr)}`;

      refreshMemory();
    }

    function nextSearchMatch() {
      if (searchMatches.length === 0) return;
      const nextIndex = (currentSearchIndex + 1) % searchMatches.length;
      goToSearchMatch(nextIndex);
    }

    // Event listeners
    document.getElementById('address-input').addEventListener('change', (e) => {
      try {
        currentAddress = parseAddress(e.target.value);
        refreshMemory();
      } catch (e) {
        alert('Invalid address');
      }
    });

    document.getElementById('bytes-count').addEventListener('change', (e) => {
      bytesToShow = parseInt(e.target.value, 10);
      refreshMemory();
    });

    document.getElementById('refresh-btn').addEventListener('click', refreshMemory);

    document.getElementById('auto-refresh-toggle').addEventListener('click', (e) => {
      autoRefresh = !autoRefresh;
      e.target.textContent = `Auto-Refresh: ${autoRefresh ? 'ON' : 'OFF'}`;

      if (autoRefresh) {
        autoRefreshInterval = setInterval(refreshMemory, 100);
      } else {
        clearInterval(autoRefreshInterval);
      }
    });

    document.getElementById('edit-save').addEventListener('click', saveEdit);
    document.getElementById('edit-cancel').addEventListener('click', closeEditDialog);
    document.getElementById('edit-overlay').addEventListener('click', closeEditDialog);

    document.getElementById('edit-value').addEventListener('keydown', (e) => {
      if (e.key === 'Enter') saveEdit();
      if (e.key === 'Escape') closeEditDialog();
    });

    // Page navigation
    document.getElementById('first-page').addEventListener('click', () => {
      currentAddress = 0;
      document.getElementById('address-input').value = formatAddress(currentAddress);
      refreshMemory();
    });

    document.getElementById('prev-page').addEventListener('click', () => {
      currentAddress = Math.max(0, currentAddress - bytesToShow);
      document.getElementById('address-input').value = formatAddress(currentAddress);
      refreshMemory();
    });

    document.getElementById('next-page').addEventListener('click', () => {
      if (!memory) return;
      const maxAddr = memory.buffer.byteLength - bytesToShow;
      currentAddress = Math.min(maxAddr, currentAddress + bytesToShow);
      document.getElementById('address-input').value = formatAddress(currentAddress);
      refreshMemory();
    });

    document.getElementById('last-page').addEventListener('click', () => {
      if (!memory) return;
      currentAddress = Math.max(0, memory.buffer.byteLength - bytesToShow);
      document.getElementById('address-input').value = formatAddress(currentAddress);
      refreshMemory();
    });

    // Search functionality
    document.getElementById('search-btn').addEventListener('click', searchMemory);
    document.getElementById('search-next').addEventListener('click', nextSearchMatch);

    document.getElementById('search-input').addEventListener('keydown', (e) => {
      if (e.key === 'Enter') searchMemory();
    });

    // Initial connection
    connectToMemory();

    // Auto-connect if opened from parent
    if (window.opener) {
      setInterval(() => {
        if (!memory && window.opener && window.opener.getMemory) {
          connectToMemory();
        }
      }, 1000);
    }
  </script>
</body>
</html>