Initial commit

samplesplash.json

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+{
+  "splash_size": 1,
+  "animation": {
+    "startTime": 32,
+    "endTime": 244
+  },
+  "sprite":
+  {
+    "count": 24
+  },
+  "consoleName": {
+    "vertical": {
+      "x_pos": 68,
+      "y_pos": 80
+    },
+    "horizontal": {
+      "x_pos": 96,
+      "y_pos": 108
+    },
+  "color": 0
+  },
+  "palette": [
+    [0, 0, 0],
+    [16, 16, 16],
+    [16, 16, 16],
+    [16, 16, 16],
+    [16, 16, 16],
+    [16, 16, 16],
+    [16, 16, 16],
+    [16, 16, 16],
+    [16, 16, 16],
+    [0, 0, 0],
+    [16, 16, 16],
+    [16, 16, 16],
+    [0, 0, 0],
+    [16, 16, 16],
+    [16, 16, 16],
+    [16, 16, 16],
+    [16, 16, 16],
+    [0, 0, 0],
+    [0, 0, 0],
+    [0, 0, 0],
+    [0, 0, 0],
+    [0, 0, 0],
+    [0, 0, 0],
+    [0, 0, 0],
+    [16, 16, 16],
+    [0, 0, 0],
+    [16, 16, 16],
+    [0, 0, 0],
+    [16, 16, 16],
+    [0, 0, 0],
+    [16, 16, 16],
+    [16, 16, 16]
+  ],
+  "tiles": {
+    "bpp": 1,
+    "count": 12,
+    "data": "samplesplash_tiles.bin"
+  },
+  "tilemap": {
+    "vertical": {
+      "top": 6,
+      "left": 18
+    },
+    "horizontal": {
+      "top": 4,
+      "left": 11
+    },
+    "height": 6,
+    "width": 6,
+    "data": "samplesplash_tilemap.bin"
+  },
+  "vblankCode": {
+    "asm": "samplesplasg_vblank.asm"
+  },
+  "sound": {
+    "channelwaves": "samplesplash_waves.bin",
+    "channeldata": {
+      "ch0": "wonderwhat_ch0.bin",
+      "ch1": "wonderwhat_ch1.bin",
+      "ch2": ""
+    }
+  }
+}

samplesplash_vblank.s

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+vblank:
+    ret

splashbuilder.py

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+"""
+Some info.
+
+Size =
+    0 = 1BDh
+    1 = 3BDh
+
+Tilemap screen1 base = 800h
+Tilemap screen2 base = 1000h
+Tileset base = 2000h
+Sprite base  = 1800h
+
+0000:7000 store the screen orientation
+0000:7001 and onward can be used by the boot splash for variables
+
+Splash flags, bit 7 > 0 = 1BPP tiles, 1 = 2BPP tiles
+              bit 4-0 store amount of palettes to copy.
+
+For 1bpp tiles, each palettes store 2 colours.
+For 2bpp tiles, each palettes store 4 colours.
+
+Splash data is copied at
+    0600:0000
+
+Avail color for console name:
+          0600:06e6 [0]                0h,   F00h,   F70h,   FF0h
+          0600:06ee [4]              7F0h,    F0h,    F7h,    FFh
+          0600:06f6 [8]               7Fh,     Fh,   70Fh,   F0Fh
+          0600:06fe [12]             F07h,   FFFh,   777h
+
+On the VBlank code,
+
+CS = 0600h
+DS = 0600h
+ES = ??
+SS = 0000h
+
+struct bootsplash_t
+{
+   uint8_t padding[3];
+   uint8_t consoleFlags;
+   uint8_t consoleNameColor;
+   uint8_t padding2;
+   uint8_t size;
+   uint8_t startFrame;
+   uint8_t endFrame;
+   uint8_t spriteCount;
+   uint8_t paletteFlags;
+   uint8_t tilesCount;
+   uint16_t paletteOffset;
+   uint16_t tilesetOffset;
+   uint16_t tilemapOffset;
+   uint16_t horizontalTilemapDestOffset;
+   uint16_t verticalTilemapDestOffset;
+   uint8_t tilemapWidth;
+   uint8_t tilemapHeight;
+   uint32_t splashCodePointer;
+   uint16_t consoleNameHorizontalPos;
+   uint16_t consoleNameVerticalPos;
+   uint8_t padding3[2];
+   uint16_t soundSampleOffset;
+   uint16_t soundChannelDataOffset[3]
+};
+
+"""