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Added MC6845 display controller support for hercules,cga,tandy machine modes.

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Added cga,tandy,text modes.
Added some new tandy modes.
Added better tandy register support.


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1691
This commit is contained in:
Sjoerd van der Berg 2004-02-29 22:18:24 +00:00
parent 5ec076438e
commit f7c4b46991
19 changed files with 953 additions and 667 deletions
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38
include/vga.h
View file

@ -23,13 +23,13 @@
#include "dosbox.h"
enum VGAModes {
M_TEXT2,M_TEXT16,
M_HERC,
M_CGA2,M_CGA4,M_CGA16,
M_TANDY16,
M_EGA2,M_EGA4,M_EGA16,
M_TEXT,
M_HERC_GFX,M_HERC_TEXT,
M_CGA2,M_CGA4,
M_EGA16,
M_VGA,
M_LIN8,
M_CGA16,M_TANDY2,M_TANDY4,M_TANDY16,M_TANDY_TEXT,
M_ERROR,
};
@ -161,18 +161,28 @@ typedef struct {
} VGA_HERC;
typedef struct {
Bit8u mode_control;
Bit8u color_select;
} VGA_CGA;
Bit8u index;
Bit8u htotal;
Bit8u hdend;
Bit8u hsyncp;
Bit8u hsyncw;
Bit8u vtotal;
Bit8u vdend;
Bit8u vadjust;
Bit8u vsyncp;
Bit8u vsyncw;
Bit8u max_scanline;
} VGA_OTHER;
typedef struct {
Bit8u mode_control;
Bit8u color_select;
Bit8u mem_bank;
Bit8u disp_bank;
Bit8u reg_index;
Bit8u mode_control1;
Bit8u gfx_control;
Bit8u palette_mask;
Bit8u border_color;
Bit8u mode_control2;
} VGA_TANDY;
typedef struct {
@ -255,7 +265,6 @@ typedef struct {
Bit8u read_index;
Bitu first_changed;
RGBEntry rgb[0x100];
Bit8u attr[16];
} VGA_Dac;
union VGA_Latch {
@ -284,8 +293,8 @@ typedef struct {
VGA_Latch latch;
VGA_S3 s3;
VGA_HERC herc;
VGA_CGA cga;
VGA_TANDY tandy;
VGA_OTHER other;
VGA_Memory mem;
} VGA_Type;
@ -293,6 +302,7 @@ typedef struct {
/* Functions for different resolutions */
void VGA_SetMode(VGAModes mode);
void VGA_DetermineMode(void);
void VGA_SetupHandlers(void);
void VGA_StartResize(void);
void VGA_SetupDrawing(Bitu val);
@ -300,6 +310,7 @@ void VGA_CheckScanLength(void);
/* Some DAC/Attribute functions */
void VGA_DAC_CombineColor(Bit8u attr,Bit8u pal);
void VGA_DAC_SetEntry(Bitu entry,Bit8u red,Bit8u green,Bit8u blue);
void VGA_ATTR_SetPalette(Bit8u index,Bit8u val);
/* The VGA Subfunction startups */
@ -310,6 +321,7 @@ void VGA_SetupCRTC(void);
void VGA_SetupMisc(void);
void VGA_SetupGFX(void);
void VGA_SetupSEQ(void);
void VGA_SetupOther(void);
/* Some Support Functions */
void VGA_SetClock(Bitu which,Bitu target);
@ -317,6 +329,8 @@ void VGA_DACSetEntirePalette(void);
void VGA_StartRetrace(void);
void VGA_StartUpdateLFB(void);
void VGA_SetBlinking(Bitu enabled);
void VGA_SetCGA2Table(Bit8u val0,Bit8u val1);
void VGA_SetCGA4Table(Bit8u val0,Bit8u val1,Bit8u val2,Bit8u val3);
extern VGA_Type vga;