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Bochs VBE Extensions: Difference between revisions
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=== Clearing display memory ===
When enabling the VBE extensions, Bochs clears the video memory (i.e. sets all bytes to 0). To prevent this from happening, use the VBE_DISPI_NOCLEARMEM flag (0x80) when enabling the VBE extensions (so write a value of VBE_DISPI_INDEX_ENABLE | VBE_DISPI_NOCLEARMEM (0x84) for banked mode and VBE_DISPI_INDEX_ENABLE | VBE_DISPI_LFB_ENABLED | VBE_DISPI_NOCLEARMEM (0xC4) for LFB).
=== Miscellaneous ===
[TODO: check and describe VBE_DISPI_INDEX_ID (with associated VBE_DISPI_IDx constants), VBE_DISPI_INDEX_VIRT_WIDTH/HEIGHT, VBE_DISPI_INDEX_X/Y_OFFSET, VBE_DISPI_GETCAPS, VBE_DISPI_8BIT_DAC]
[[Category:Video]]
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