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initial support for Wyse-700 graphics card based on findings of John Elliott (no whatsnew)

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This commit is contained in:
Miodrag Milanovic 2012-10-31 12:50:18 +00:00
parent acda03dc57
commit d6ea1744a0
3 changed files with 184 additions and 12 deletions
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1
src/mess/drivers/at.c
View File

@ -349,6 +349,7 @@ static SLOT_INTERFACE_START(pc_isa16_cards)
// ISA 8 bit
SLOT_INTERFACE("mda", ISA8_MDA)
SLOT_INTERFACE("cga", ISA8_CGA)
SLOT_INTERFACE("wyse700", ISA8_WYSE700)
SLOT_INTERFACE("ega", ISA8_EGA)
SLOT_INTERFACE("vga", ISA8_VGA)
SLOT_INTERFACE("svga_et4k", ISA8_SVGA_ET4K)

162
src/mess/video/isa_cga.c
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@ -683,6 +683,7 @@ isa8_cga_device::isa8_cga_device(const machine_config &mconfig, const char *tag,
m_chr_gen_offset[0] = m_chr_gen_offset[2] = 0x1800;
m_chr_gen_offset[1] = m_chr_gen_offset[3] = 0x1000;
m_font_selection_mask = 0x01;
m_start_offset = 0;
}
isa8_cga_device::isa8_cga_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock) :
@ -693,6 +694,7 @@ isa8_cga_device::isa8_cga_device(const machine_config &mconfig, device_type type
m_chr_gen_offset[0] = m_chr_gen_offset[2] = 0x1800;
m_chr_gen_offset[1] = m_chr_gen_offset[3] = 0x1000;
m_font_selection_mask = 0x01;
m_start_offset = 0;
}
@ -887,7 +889,7 @@ isa8_cga_superimpose_device::isa8_cga_superimpose_device(const machine_config &m
static MC6845_UPDATE_ROW( cga_text_inten_update_row )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
int i;
@ -928,7 +930,7 @@ static MC6845_UPDATE_ROW( cga_text_inten_update_row )
static MC6845_UPDATE_ROW( cga_text_inten_comp_grey_update_row )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
int i;
@ -968,7 +970,7 @@ static MC6845_UPDATE_ROW( cga_text_inten_comp_grey_update_row )
static MC6845_UPDATE_ROW( cga_text_inten_alt_update_row )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
int i;
@ -1008,7 +1010,7 @@ static MC6845_UPDATE_ROW( cga_text_inten_alt_update_row )
static MC6845_UPDATE_ROW( cga_text_blink_update_row )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
int i;
@ -1053,7 +1055,7 @@ static MC6845_UPDATE_ROW( cga_text_blink_update_row )
static MC6845_UPDATE_ROW( cga_text_blink_update_row_si )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
int i;
@ -1106,7 +1108,7 @@ static MC6845_UPDATE_ROW( cga_text_blink_update_row_si )
static MC6845_UPDATE_ROW( cga_text_blink_alt_update_row )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
int i;
@ -1155,7 +1157,7 @@ static MC6845_UPDATE_ROW( cga_text_blink_alt_update_row )
static MC6845_UPDATE_ROW( cga_gfx_4bppl_update_row )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
int i;
@ -1214,7 +1216,7 @@ static const UINT8 yc_lut[16][8] =
static MC6845_UPDATE_ROW( cga_gfx_4bpph_update_row )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
int i;
@ -1259,7 +1261,7 @@ static MC6845_UPDATE_ROW( cga_gfx_4bpph_update_row )
static MC6845_UPDATE_ROW( cga_gfx_2bpp_update_row )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
int i;
@ -1296,7 +1298,7 @@ static MC6845_UPDATE_ROW( cga_gfx_2bpp_update_row )
static MC6845_UPDATE_ROW( cga_gfx_1bpp_update_row )
{
isa8_cga_device *cga = downcast<isa8_cga_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
UINT8 fg = cga->m_color_select & 0x0F;
@ -1798,7 +1800,7 @@ WRITE8_MEMBER( isa8_cga_device::io_write )
static MC6845_UPDATE_ROW( pc1512_gfx_4bpp_update_row )
{
isa8_cga_pc1512_device *cga = downcast<isa8_cga_pc1512_device *>(device->owner());
UINT8 *videoram = cga->m_vram;
UINT8 *videoram = cga->m_vram + cga->m_start_offset;
UINT32 *p = &bitmap.pix32(y);
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
UINT16 offset_base = ra << 13;
@ -2033,3 +2035,141 @@ void isa8_cga_pc1512_device::device_reset()
membank("bank1")->set_base(m_vram + isa8_cga_pc1512_device::vram_offset[0]);
}
void isa8_wyse700_device::change_resolution(UINT8 mode)
{
int width = 0, height = 0;
if (mode & 2) {
machine().root_device().membank("bank_wy1")->set_base(m_vram + 0x10000);
} else {
machine().root_device().membank("bank_wy1")->set_base(m_vram);
}
if ((m_control & 0xf0) == (mode & 0xf0)) return;
switch(mode & 0xf0) {
case 0xc0: width = 1280; height = 800; break;
case 0xa0: width = 1280; height = 400; break;
case 0x80: width = 640; height = 400; break;
case 0x00: width = 640; height = 400; break; // unhandled
}
rectangle visarea(0, width-1, 0, height-1);
subdevice<screen_device>(CGA_SCREEN_NAME)->configure(width, height, visarea, HZ_TO_ATTOSECONDS(60));
}
WRITE8_MEMBER( isa8_wyse700_device::io_write )
{
switch (offset)
{
case 0xd:
m_bank_offset = data;
break;
case 0xe:
m_bank_base = data;
break;
case 0xf:
change_resolution(data);
m_control = data;
break;
default:
isa8_cga_device::io_write(space, offset,data);
break;
}
}
READ8_MEMBER( isa8_wyse700_device::io_read )
{
UINT8 data;
switch (offset)
{
case 0xd:
data = m_bank_offset;
break;
case 0xe:
data = m_bank_base;
break;
case 0xf:
data = m_control;
break;
default:
data = isa8_cga_device::io_read(space, offset);
break;
}
return data;
}
const device_type ISA8_WYSE700 = &device_creator<isa8_wyse700_device>;
//-------------------------------------------------
// isa8_wyse700_device - constructor
//-------------------------------------------------
isa8_wyse700_device::isa8_wyse700_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
isa8_cga_device( mconfig, ISA8_WYSE700, "Wyse 700", tag, owner, clock )
{
m_vram_size = 0x20000;
m_start_offset = 0x18000;
}
const rom_entry *isa8_wyse700_device::device_rom_region() const
{
return ROM_NAME( cga );
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void isa8_wyse700_device::device_start()
{
isa8_cga_device::device_start();
m_isa->install_device(0x3d0, 0x3df, 0, 0, read8_delegate( FUNC(isa8_wyse700_device::io_read), this ), write8_delegate( FUNC(isa8_wyse700_device::io_write), this ) );
m_isa->install_bank(0xa0000, 0xaffff, 0, 0, "bank_wy1", m_vram);
m_isa->install_bank(0xb0000, 0xbffff, 0, 0, "bank_cga", m_vram + 0x10000);
}
void isa8_wyse700_device::device_reset()
{
isa8_cga_device::device_reset();
m_control = 0;
m_bank_offset = 0;
m_bank_base = 0;
}
UINT32 isa8_wyse700_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
if (m_control & 0x08) {
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
UINT8 fg = m_color_select & 0x0F;
UINT32 addr = 0;
for (int y = 0; y < 800; y++) {
UINT8 *src = m_vram + addr;
if (y & 1) {
src += 0x10000;
addr += 160;
}
for (int x = 0; x < (1280 / 8); x++) {
UINT8 val = src[x];
for (int i = 0; i < 8; i++) {
bitmap.pix32(y,x*8+i) = (val & 0x80) ? palette[fg] : palette[0x00];
val <<= 1;
}
}
}
} else {
return isa8_cga_device::screen_update(screen, bitmap, cliprect);
}
return 0;
}

33
src/mess/video/isa_cga.h
View File

@ -48,7 +48,7 @@ public:
DECLARE_WRITE8_MEMBER( char_ram_write );
DECLARE_WRITE_LINE_MEMBER( hsync_changed );
DECLARE_WRITE_LINE_MEMBER( vsync_changed );
UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
virtual UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
public:
int m_framecnt;
@ -70,6 +70,7 @@ public:
bool m_superimpose;
UINT8 m_p3df; /* This should be moved into the appropriate subclass */
UINT8 m_plantronics; /* This should be moved into the appropriate subclass */
offs_t m_start_offset;
};
// device type definition
@ -182,6 +183,36 @@ public:
// device type definition
extern const device_type ISA8_CGA_PC1512;
// ======================> isa8_wyse700_device
class isa8_wyse700_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_wyse700_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual const rom_entry *device_rom_region() const;
virtual void device_config_complete() { m_shortname = "wyse700"; }
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
public:
virtual DECLARE_READ8_MEMBER( io_read );
virtual DECLARE_WRITE8_MEMBER( io_write );
virtual UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
void change_resolution(UINT8 mode);
UINT8 m_bank_offset;
UINT8 m_bank_base;
UINT8 m_control;
};
// device type definition
extern const device_type ISA8_WYSE700;
#endif /* __ISA_CGA_H__ */