Fixes for the (S)VGA common DAC and some card-specific DAT's (ATi 68860, BT48x family, and the Cirrus Logic DAC), fixes Star Control II among other things.

backup code/dma.h.old

@@ -0,0 +1,74 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Implementation of the Intel DMA controllers.
+ *
+ * Version:	@(#)dma.h	1.0.5	2018/03/11
+ *
+ * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
+ *		Miran Grca, <mgrca8@gmail.com>
+ *
+ *		Copyright 2008-2017 Sarah Walker.
+ *		Copyright 2016,2017 Miran Grca.
+ */
+#ifndef EMU_DMA_H
+# define EMU_DMA_H
+
+
+#define DMA_NODATA	-1
+#define DMA_OVER	0x10000
+#define DMA_VERIFY	0x20000
+
+
+/*DMA*/
+typedef struct dma_t
+{
+        uint32_t ab, ac;
+        uint16_t cb;
+        int cc;
+        int wp;
+        uint8_t m, mode;
+        uint8_t page;
+        uint8_t stat, stat_rq;
+        uint8_t command;
+        int size;
+        
+        uint8_t ps2_mode;
+        uint8_t arb_level;
+        uint16_t io_addr;
+} dma_t;
+
+extern dma_t dma[8];
+
+extern void	dma_init(void);
+extern void	dma16_init(void);
+extern void	ps2_dma_init(void);
+extern void	dma_reset(void);
+extern int	dma_mode(int channel);
+
+extern void	readdma0(void);
+extern int	readdma1(void);
+extern uint8_t	readdma2(void);
+extern int	readdma3(void);
+
+extern void	writedma2(uint8_t temp);
+
+extern int	dma_channel_read(int channel);
+extern int	dma_channel_write(int channel, uint16_t val);
+
+extern void	dma_alias_set(void);
+extern void	dma_alias_remove(void);
+extern void	dma_alias_remove_piix(void);
+
+extern void	DMAPageRead(uint32_t PhysAddress, uint8_t *DataRead,
+			    uint32_t TotalSize);
+extern void	DMAPageWrite(uint32_t PhysAddress, const uint8_t *DataWrite,
+			     uint32_t TotalSize);
+
+
+#endif	/*EMU_DMA_H*/