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The delayed video changes of the night (January 20th, 2025)

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Generic SVGA layer:
Added function pointers of the banked mapping for use with add-on cards with their own mapping when the VGA card banked mapping is not active or viceversa (e.g.: XGA).

XGA-1/2:
1. Reimplemented Area Fill and Boundary Mode as best as possible.
2. Fixed conflicts with banked mapping with VGA clones.
3. Fixed inverted colors (again) on accelerated 16bpp mode under OS/2.

Video7 with ATI 8514/A add-on.
Added a workaround (BIOS issue? I don't know) that disables 8514/A mode and reenables VGA mode when needed. Fixes screen freezes and polling issues with various drivers for Windows and others.
This commit is contained in:
TC1995
2025-01-20 03:26:49 +01:00
parent 84853cb21f
commit f48c50f4ba
6 changed files with 219 additions and 143 deletions
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8
src/include/86box/vid_svga.h
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@@ -202,6 +202,14 @@ typedef struct svga_t {
void (*vblank_start)(struct svga_t *svga);
void (*write)(uint32_t addr, uint8_t val, void *priv);
void (*writew)(uint32_t addr, uint16_t val, void *priv);
void (*writel)(uint32_t addr, uint32_t val, void *priv);
uint8_t (*read)(uint32_t addr, void *priv);
uint16_t (*readw)(uint32_t addr, void *priv);
uint32_t (*readl)(uint32_t addr, void *priv);
void (*ven_write)(struct svga_t *svga, uint8_t val, uint32_t addr);
float (*getclock)(int clock, void *priv);
float (*getclock8514)(int clock, void *priv);