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/* |
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* video.cpp - Video/graphics emulation |
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* |
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* Basilisk II (C) 1997-1999 Christian Bauer |
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* Basilisk II (C) 1997-2001 Christian Bauer |
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* Portions (C) 1997-1999 Marc Hellwig |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* Driver Open() routine |
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*/ |
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int16 VideoOpen(uint32 pb, uint32 dce) |
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int16 VideoDriverOpen(uint32 pb, uint32 dce) |
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{ |
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D(bug("VideoOpen\n")); |
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D(bug("VideoDriverOpen\n")); |
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// Init local variables |
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VidLocal.desc = &VideoMonitor; |
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* Driver Control() routine |
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*/ |
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int16 VideoControl(uint32 pb, uint32 dce) |
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int16 VideoDriverControl(uint32 pb, uint32 dce) |
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{ |
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uint16 code = ReadMacInt16(pb + csCode); |
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uint32 param = ReadMacInt32(pb + csParam); |
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D(bug("VideoControl %d\n", code)); |
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D(bug("VideoDriverControl %d\n", code)); |
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switch (code) { |
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case cscSetMode: // Set color depth |
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uint32 p = VidLocal.desc->mac_frame_base; |
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uint32 pat = pattern[VidLocal.desc->mode]; |
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for (uint32 y=0; y<VidLocal.desc->y; y++) { |
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uint32 p2 = p; |
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for (uint32 x=0; x<VidLocal.desc->bytes_per_row / 4; x++) { |
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WriteMacInt32(p2, pat); |
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p2 += 4; |
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for (uint32 x=0; x<VidLocal.desc->bytes_per_row; x+=4) { |
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WriteMacInt32(p + x, pat); |
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if (VidLocal.desc->mode == VMODE_32BIT) |
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pat = ~pat; |
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} |
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return noErr; |
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default: |
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printf("WARNING: Unknown VideoControl(%d)\n", code); |
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printf("WARNING: Unknown VideoDriverControl(%d)\n", code); |
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return controlErr; |
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} |
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} |
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* Driver Status() routine |
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*/ |
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int16 VideoStatus(uint32 pb, uint32 dce) |
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int16 VideoDriverStatus(uint32 pb, uint32 dce) |
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{ |
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uint16 code = ReadMacInt16(pb + csCode); |
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uint32 param = ReadMacInt32(pb + csParam); |
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D(bug("VideoStatus %d\n", code)); |
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D(bug("VideoDriverStatus %d\n", code)); |
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switch (code) { |
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case cscGetPageCnt: // Get number of pages |
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case cscGetModeTiming: // Get video timing for mode |
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D(bug(" GetModeTiming mode %08lx\n", ReadMacInt32(param + csTimingMode))); |
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WriteMacInt32(param + csTimingFormat, 'decl'); |
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WriteMacInt32(param + csTimingFormat, FOURCC('d', 'e', 'c', 'l')); |
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WriteMacInt32(param + csTimingData, 220); // 21" Multiscan |
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WriteMacInt32(param + csTimingFlags, 0x0f); // Mode valid, safe, default and shown in Monitors panel |
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return noErr; |
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case cscGetModeBaseAddress: // Get frame buffer base address |
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D(bug(" GetModeBaseAddress\n")); |
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WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base); |
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WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base); // Base address of video RAM for the current DisplayModeID and relative bit depth |
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return noErr; |
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case cscGetMode: // REQUIRED for MacsBug |
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D(bug(" GetMode\n")); |
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WriteMacInt16(param + csPageMode, 0x80); |
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WriteMacInt32(param + csPageData, 0x80); // Unused |
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WriteMacInt16(param + csPagePage, 0); // Current display page |
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WriteMacInt32(param + csPageBaseAddr, VidLocal.desc->mac_frame_base); |
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return noErr; |
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default: |
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printf("WARNING: Unknown VideoStatus(%d)\n", code); |
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printf("WARNING: Unknown VideoDriverStatus(%d)\n", code); |
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return statusErr; |
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} |
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} |
