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MGA updates for the vram detection and stuff.

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1. The Debian issue mystery lies around chain2_read/write being required when the LFB mapping is enabled too when MGA modes are set without blitting, however, when it is blitting, immediately tell chain2 to not interfere with the mapping. Fixes Debian once and for all as well as VRAM detection correctly while keeping existing compatibility fine.
2. Undev branch the G100 per above. (Revert if more bugs are revealed).
3. An AND with 0 is not tolerable as it nulls the LFB, fixes hang ups with Win2000 using the Millennium II and possibly the G100.
4. the Extended CRTCs now have a call for timing recalculation, fixes mode changes when blitting is going on.
This commit is contained in:
TC1995
2024-02-15 23:10:05 +01:00
parent 0b8f02d702
commit e9f0af21a0
3 changed files with 96 additions and 69 deletions
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src/include/86box/video.h
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@@ -440,9 +440,7 @@ extern const device_t millennium_device;
extern const device_t mystique_device;
extern const device_t mystique_220_device;
extern const device_t millennium_ii_device;
# if defined(DEV_BRANCH) && defined(USE_MGA2)
extern const device_t productiva_g100_device;
# endif
/* Oak OTI-0x7 */
extern const device_t oti037c_device;