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/* |
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* slot_rom.cpp - Slot declaration ROM |
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* |
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* Basilisk II (C) 1996-1997 Christian Bauer |
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* Basilisk II (C) 1996-2001 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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// Index in srom |
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static uint32 p; |
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|
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// Length of slot ROM |
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static int slot_rom_size = 0; |
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|
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|
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// Check whether a mode with the specified depth exists |
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static bool has_depth(video_depth depth) |
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{ |
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std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end(); |
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while (i != end) { |
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if (i->depth == depth) |
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return true; |
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++i; |
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} |
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return false; |
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} |
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|
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|
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/* |
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* Construct slot declaration ROM and copy it into the Mac ROM (must be called after VideoInit()) |
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srom[p++] = 0; |
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} |
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|
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static uint32 VModeParms(uint32 width, uint32 height, uint32 bytes_per_row, video_depth depth) |
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{ |
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uint32 ret = p; |
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Long(50); // Length |
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Long(0); // Base offset |
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Word(bytes_per_row); // Row bytes |
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Word(0); // Bounds |
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Word(0); |
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Word(height); |
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Word(width); |
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Word(0); // Version |
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Word(0); // Pack type |
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Long(0); // Pack size |
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Long(0x00480000); // HRes |
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Long(0x00480000); // VRes |
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switch (depth) { |
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case VDEPTH_1BIT: |
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Word(0); // Pixel type (indirect) |
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Word(1); // Pixel size |
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Word(1); // CmpCount |
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Word(1); // CmpSize |
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break; |
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case VDEPTH_2BIT: |
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Word(0); // Pixel type (indirect) |
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Word(2); // Pixel size |
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Word(1); // CmpCount |
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Word(2); // CmpSize |
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break; |
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case VDEPTH_4BIT: |
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Word(0); // Pixel type (indirect) |
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Word(4); // Pixel size |
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Word(1); // CmpCount |
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Word(4); // CmpSize |
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break; |
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case VDEPTH_8BIT: |
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Word(0); // Pixel type (indirect) |
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Word(8); // Pixel size |
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Word(1); // CmpCount |
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Word(8); // CmpSize |
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break; |
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case VDEPTH_16BIT: |
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Word(16); // Pixel type (direct) |
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Word(16); // Pixel size |
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Word(3); // CmpCount |
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Word(5); // CmpSize |
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break; |
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case VDEPTH_32BIT: |
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Word(16); // Pixel type (direct) |
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Word(32); // Pixel size |
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Word(3); // CmpCount |
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Word(8); // CmpSize |
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break; |
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} |
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Long(0); // Plane size |
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Long(0); // Reserved |
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return ret; |
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} |
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|
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static uint32 VModeDesc(uint32 params, bool direct) |
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{ |
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uint32 ret = p; |
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Offs(0x01, params); // Video parameters |
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Rsrc(0x03, 1); // Page count |
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Rsrc(0x04, direct ? 2 : 0); // Device type |
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EndOfList(); |
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return ret; |
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} |
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|
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bool InstallSlotROM(void) |
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{ |
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uint32 boardType, boardName, vendorID, revLevel, partNum, date; |
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uint32 vendorInfo, sRsrcBoard; |
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|
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uint32 videoType, videoName, minorBase, minorLength, videoDrvr, vidDrvrDir; |
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uint32 defaultGamma, gammaDir, vidModeParms, vidMode, sRsrcVideo; |
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uint32 defaultGamma, gammaDir, sRsrcVideo; |
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uint32 vidModeParms1, vidModeParms2, vidModeParms4, vidModeParms8, vidModeParms16, vidModeParms32; |
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uint32 vidMode1, vidMode2, vidMode4, vidMode8, vidMode16, vidMode32; |
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|
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uint32 cpuType, cpuName, cpuMajor, cpuMinor, sRsrcCPU; |
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Offs(0x24, vendorInfo); // Vendor Info |
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EndOfList(); |
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// Video sResource |
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// Video sResource for default mode |
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videoType = p; // Literals |
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Word(3); Word(1); Word(1); Word(0x4232); // Display Video Apple 'B2' |
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Word(3); Word(1); Word(1); Word(0x4232); // Display Video Apple 'B2' |
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videoName = p; |
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String("Display_Video_Apple_Basilisk"); |
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minorBase = p; |
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Long(VideoMonitor.mac_frame_base); // Frame buffer base |
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Long(VideoMonitor.mac_frame_base); // Frame buffer base |
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minorLength = p; |
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Long(VideoMonitor.bytes_per_row * VideoMonitor.y); // Frame buffer size |
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Long(0); // Frame buffer size (unspecified) |
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|
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videoDrvr = p; // Video driver |
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Long(0x72); // Length |
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Offs(0x80, defaultGamma); |
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EndOfList(); |
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vidModeParms = p; // Video mode parameters |
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Long(50); // Length |
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Long(0); // Base offset |
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Word(VideoMonitor.bytes_per_row); // Row bytes |
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Word(0); // Bounds |
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Word(0); |
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Word(VideoMonitor.y); |
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Word(VideoMonitor.x); |
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Word(0); // Version |
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Word(0); // Pack type |
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Long(0); // Pack size |
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Long(0x00480000); // HRes |
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Long(0x00480000); // VRes |
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switch (VideoMonitor.mode) { |
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case VMODE_1BIT: |
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Word(0); // Pixel type (indirect) |
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Word(1); // Pixel size |
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Word(1); // CmpCount |
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Word(1); // CmpSize |
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break; |
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case VMODE_2BIT: |
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Word(0); // Pixel type (indirect) |
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Word(2); // Pixel size |
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Word(1); // CmpCount |
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Word(2); // CmpSize |
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break; |
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case VMODE_4BIT: |
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Word(0); // Pixel type (indirect) |
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Word(4); // Pixel size |
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Word(1); // CmpCount |
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Word(4); // CmpSize |
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break; |
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case VMODE_8BIT: |
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Word(0); // Pixel type (indirect) |
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Word(8); // Pixel size |
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Word(1); // CmpCount |
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Word(8); // CmpSize |
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break; |
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case VMODE_16BIT: |
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Word(16); // Pixel type (direct) |
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Word(16); // Pixel size |
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Word(3); // CmpCount |
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Word(5); // CmpSize |
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break; |
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case VMODE_32BIT: |
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Word(16); // Pixel type (direct) |
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Word(32); // Pixel size |
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Word(3); // CmpCount |
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Word(8); // CmpSize |
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break; |
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} |
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Long(0); // Plane size |
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Long(0); // Reserved |
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|
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vidMode = p; // Video mode description |
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Offs(0x01, vidModeParms); // Video parameters |
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Rsrc(0x03, 1); // Page count |
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Rsrc(0x04, IsDirectMode(VideoMonitor.mode) ? 2 :0); // Device type |
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EndOfList(); |
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vidModeParms1 = VModeParms(VideoMonitor.mode.x, VideoMonitor.mode.y, VideoMonitor.mode.bytes_per_row, VDEPTH_1BIT); |
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vidModeParms2 = VModeParms(VideoMonitor.mode.x, VideoMonitor.mode.y, VideoMonitor.mode.bytes_per_row, VDEPTH_2BIT); |
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vidModeParms4 = VModeParms(VideoMonitor.mode.x, VideoMonitor.mode.y, VideoMonitor.mode.bytes_per_row, VDEPTH_4BIT); |
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vidModeParms8 = VModeParms(VideoMonitor.mode.x, VideoMonitor.mode.y, VideoMonitor.mode.bytes_per_row, VDEPTH_8BIT); |
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vidModeParms16 = VModeParms(VideoMonitor.mode.x, VideoMonitor.mode.y, VideoMonitor.mode.bytes_per_row, VDEPTH_16BIT); |
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vidModeParms32 = VModeParms(VideoMonitor.mode.x, VideoMonitor.mode.y, VideoMonitor.mode.bytes_per_row, VDEPTH_32BIT); |
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|
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vidMode1 = VModeDesc(vidModeParms1, false); |
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vidMode2 = VModeDesc(vidModeParms2, false); |
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vidMode4 = VModeDesc(vidModeParms4, false); |
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vidMode8 = VModeDesc(vidModeParms8, false); |
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vidMode16 = VModeDesc(vidModeParms16, true); |
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vidMode32 = VModeDesc(vidModeParms32, true); |
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sRsrcVideo = p; |
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Offs(0x01, videoType); // Video type descriptor |
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Offs(0x0b, minorLength); // Frame buffer length |
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Offs(0x40, gammaDir); // Gamma directory |
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Rsrc(0x7d, 6); // Video attributes: Default to color, built-in |
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Offs(0x80, vidMode); // Video mode parameters |
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if (has_depth(VDEPTH_1BIT)) |
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Offs(0x80, vidMode1); // Video mode parameters for 1 bit |
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if (has_depth(VDEPTH_2BIT)) |
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Offs(0x81, vidMode2); // Video mode parameters for 2 bit |
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if (has_depth(VDEPTH_4BIT)) |
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Offs(0x82, vidMode4); // Video mode parameters for 4 bit |
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if (has_depth(VDEPTH_8BIT)) |
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Offs(0x83, vidMode8); // Video mode parameters for 8 bit |
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if (has_depth(VDEPTH_16BIT)) |
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Offs(0x84, vidMode16); // Video mode parameters for 16 bit |
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if (has_depth(VDEPTH_32BIT)) |
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Offs(0x85, vidMode32); // Video mode parameters for 32 bit |
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EndOfList(); |
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|
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// CPU sResource |
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// Format/header block |
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Offs(0, sRsrcDir); // sResource directory |
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Long(p + 16); // Length of declaration data |
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Long(0); // CRC (calculated below) |
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Long(0); // CRC (calculated later) |
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Word(0x0101); // Rev. level, format |
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Long(0x5a932bc7); // Test pattern |
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Word(0x000f); // Byte lanes |
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// Copy slot ROM to Mac ROM |
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slot_rom_size = p; |
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memcpy(ROMBaseHost + ROMSize - slot_rom_size, srom, slot_rom_size); |
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|
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// Calculate checksum |
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ChecksumSlotROM(); |
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return true; |
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} |
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|
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/* |
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* Calculate slot ROM checksum (in-place) |
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*/ |
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|
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void ChecksumSlotROM(void) |
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{ |
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// Calculate CRC |
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uint8 *p = ROMBaseHost + ROMSize - slot_rom_size; |
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p[slot_rom_size - 12] = 0; |
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p[slot_rom_size - 11] = 0; |
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p[slot_rom_size - 10] = 0; |
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p[slot_rom_size - 9] = 0; |
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uint32 crc = 0; |
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for (uint32 i=0; i<p; i++) { |
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for (uint32 i=0; i<slot_rom_size; i++) { |
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crc = (crc << 1) | (crc >> 31); |
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crc += srom[i]; |
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crc += p[i]; |
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} |
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srom[p - 12] = crc >> 24; |
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srom[p - 11] = crc >> 16; |
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srom[p - 10] = crc >> 8; |
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srom[p - 9] = crc; |
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|
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// Copy slot ROM to Mac ROM |
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memcpy(ROMBaseHost + ROMSize - p, srom, p); |
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return true; |
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p[slot_rom_size - 12] = crc >> 24; |
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p[slot_rom_size - 11] = crc >> 16; |
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p[slot_rom_size - 10] = crc >> 8; |
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p[slot_rom_size - 9] = crc; |
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} |