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(MESS) enterp: converted the Nick Graphics Chip to be a device. [Fabio Priuli]
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Fabio Priuli
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2efdb1703b
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0a87be2f6f
1
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@ -8059,6 +8059,7 @@ src/mess/video/ef9345.c svneol=native#text/plain
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src/mess/video/ef9345.h svneol=native#text/plain
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src/mess/video/electron.c svneol=native#text/plain
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src/mess/video/epnick.c svneol=native#text/plain
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src/mess/video/epnick.h svneol=native#text/plain
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src/mess/video/fm7.c svneol=native#text/plain
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src/mess/video/fmtowns.c svneol=native#text/plain
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src/mess/video/galaxy.c svneol=native#text/plain
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@ -160,6 +160,7 @@ static const dave_interface enterprise_dave_interface =
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void ep_state::machine_start()
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{
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m_maincpu->set_input_line_vector(0, 0xff);
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m_nick->set_vram(m_ram->pointer());
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for (int i = 0; i < 10; i++)
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{
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@ -167,7 +168,6 @@ void ep_state::machine_start()
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sprintf(str, "LINE%i", i);
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m_key[i] = ioport(str);
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}
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}
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void ep_state::machine_reset()
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@ -176,6 +176,50 @@ void ep_state::machine_reset()
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}
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UINT32 ep_state::screen_update_enterp(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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m_nick->screen_update_epnick(screen, bitmap, cliprect);
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return 0;
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}
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// FIXME: Should this be here or in the Nick device?!?
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/* Enterprise has 256 colours, all may be on the screen at once!
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the NICK_GET_RED8, NICK_GET_GREEN8, NICK_GET_BLUE8 macros
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return a 8-bit colour value for the index specified. */
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/* given a colour index in range 0..255 gives the Red component */
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#define NICK_GET_RED8(x) \
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(( \
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(BIT(x, 0) << 2) | \
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(BIT(x, 3) << 1) | \
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(BIT(x, 6) << 0) \
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) << 5)
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/* given a colour index in range 0..255 gives the Red component */
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#define NICK_GET_GREEN8(x) \
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(( \
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(BIT(x, 1) << 2) | \
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(BIT(x, 4) << 1) | \
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(BIT(x, 7) << 0) \
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) << 5)
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/* given a colour index in range 0..255 gives the Red component */
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#define NICK_GET_BLUE8(x) \
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(( \
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(BIT(x, 2) << 1) | \
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(BIT(x, 5) << 0) \
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) << 6)
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/* initial the palette */
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void ep_state::palette_init()
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{
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for (int i = 0; i < 256; i++)
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palette_set_color_rgb(machine(), i, NICK_GET_RED8(i), NICK_GET_GREEN8(i), NICK_GET_BLUE8(i));
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}
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/***************************************************************************
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FLOPPY/EXDOS
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***************************************************************************/
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@ -251,7 +295,7 @@ static ADDRESS_MAP_START( enterprise_io, AS_IO, 8, ep_state )
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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AM_RANGE(0x10, 0x13) AM_MIRROR(0x04) AM_DEVREADWRITE_LEGACY("wd1770", wd17xx_r, wd17xx_w)
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AM_RANGE(0x18, 0x18) AM_MIRROR(0x04) AM_READWRITE(exdos_card_r, exdos_card_w)
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AM_RANGE(0x80, 0x8f) AM_WRITE(epnick_reg_w)
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AM_RANGE(0x80, 0x8f) AM_DEVWRITE("nick", nick_device, reg_w)
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AM_RANGE(0xa0, 0xbf) AM_DEVREADWRITE("custom", dave_sound_device, reg_r, reg_w)
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ADDRESS_MAP_END
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@ -452,10 +496,12 @@ static MACHINE_CONFIG_START( ep64, ep_state )
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MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
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MCFG_SCREEN_SIZE(ENTERPRISE_SCREEN_WIDTH, ENTERPRISE_SCREEN_HEIGHT)
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MCFG_SCREEN_VISIBLE_AREA(0, ENTERPRISE_SCREEN_WIDTH-1, 0, ENTERPRISE_SCREEN_HEIGHT-1)
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MCFG_SCREEN_UPDATE_DRIVER(ep_state, screen_update_epnick)
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MCFG_SCREEN_UPDATE_DRIVER(ep_state, screen_update_enterp)
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MCFG_PALETTE_LENGTH(NICK_PALETTE_SIZE)
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MCFG_NICK_ADD("nick")
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/* sound hardware */
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MCFG_SPEAKER_STANDARD_MONO("mono")
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MCFG_SOUND_ADD("custom", DAVE, 0)
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@ -2,21 +2,11 @@
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#define __ENTERP_H__
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/* there are 64us per line, although in reality
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about 50 are visible. */
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#define ENTERPRISE_SCREEN_WIDTH (50*16)
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/* there are 312 lines per screen, although in reality
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about 35*8 are visible */
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#define ENTERPRISE_SCREEN_HEIGHT (35*8)
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#define NICK_PALETTE_SIZE 256
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#include "machine/ram.h"
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#include "audio/dave.h"
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struct NICK_STATE;
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#include "video/epnick.h"
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class ep_state : public driver_device
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{
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@ -25,57 +15,32 @@ public:
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: driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_dave(*this, "custom"),
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m_nick(*this, "nick"),
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m_ram(*this, RAM_TAG),
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m_joy(*this, "JOY1") { }
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required_device<cpu_device> m_maincpu;
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required_device<dave_sound_device> m_dave;
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required_device<nick_device> m_nick;
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required_device<ram_device> m_ram;
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required_ioport m_joy;
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UINT8 exdos_card_value; /* state of the wd1770 irq/drq lines */
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UINT8 keyboard_line; /* index of keyboard line to read */
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bitmap_ind16 m_bitmap;
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NICK_STATE *nick;
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ioport_port *m_key[10];
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DECLARE_READ8_MEMBER(exdos_card_r);
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DECLARE_WRITE8_MEMBER(exdos_card_w);
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DECLARE_WRITE8_MEMBER(epnick_reg_w);
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virtual void machine_start();
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virtual void machine_reset();
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virtual void video_start();
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virtual void palette_init();
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UINT32 screen_update_epnick(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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UINT32 screen_update_enterp(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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DECLARE_WRITE8_MEMBER(enterprise_dave_reg_write);
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DECLARE_READ8_MEMBER(enterprise_dave_reg_read);
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DECLARE_WRITE_LINE_MEMBER(enterp_wd1770_intrq_w);
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DECLARE_WRITE_LINE_MEMBER(enterp_wd1770_drq_w);
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void enterprise_update_memory_page(address_space &space, offs_t page, int index);
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char Nick_FetchByte(unsigned long Addr);
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void nick_write_pixel(int ci);
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void Nick_CalcVisibleClocks(int Width);
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void Nick_Init();
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void Nick_WriteBorder(int Clocks);
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void Nick_DoLeftMargin();
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void Nick_DoRightMargin();
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int Nick_GetColourIndex(int PenIndex);
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void Nick_WritePixels2Colour(unsigned char Pen0, unsigned char Pen1, unsigned char DataByte);
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void Nick_WritePixels2ColourLPIXEL(unsigned char Pen0, unsigned char Pen1, unsigned char DataByte);
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void Nick_WritePixels(unsigned char DataByte, unsigned char CharIndex);
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void Nick_WritePixelsLPIXEL(unsigned char DataByte, unsigned char CharIndex);
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void Nick_DoPixel(int ClocksVisible);
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void Nick_DoLPixel(int ClocksVisible);
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void Nick_DoAttr(int ClocksVisible);
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void Nick_DoCh256(int ClocksVisible);
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void Nick_DoCh128(int ClocksVisible);
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void Nick_DoCh64(int ClocksVisible);
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void Nick_DoDisplay();
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void Nick_UpdateLPT();
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void Nick_ReloadLPT();
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void Nick_DoLine();
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void Nick_DoScreen(bitmap_ind16 &bm);
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};
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File diff suppressed because it is too large
Load Diff
125
src/mess/video/epnick.h
Normal file
125
src/mess/video/epnick.h
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@ -0,0 +1,125 @@
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#ifndef __EPNICK_H__
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#define __EPNICK_H__
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/* there are 64us per line, although in reality
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about 50 are visible. */
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#define ENTERPRISE_SCREEN_WIDTH (50*16)
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/* there are 312 lines per screen, although in reality
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about 35*8 are visible */
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#define ENTERPRISE_SCREEN_HEIGHT (35*8)
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/* Nick executes a Display list, in the form of a list of Line Parameter
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Tables, this is the form of the data */
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struct LPT_ENTRY
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{
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UINT8 SC; /* scanlines in this modeline (two's complement) */
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UINT8 MB; /* the MODEBYTE (defines video display mode) */
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UINT8 LM; /* left margin etc */
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UINT8 RM; /* right margin etc */
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UINT8 LD1L; /* (a7..a0) of line data pointer LD1 */
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UINT8 LD1H; /* (a8..a15) of line data pointer LD1 */
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UINT8 LD2L; /* (a7..a0) of line data pointer LD2 */
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UINT8 LD2H; /* (a8..a15) of line data pointer LD2 */
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UINT8 COL[8]; /* COL0..COL7 */
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};
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class nick_device : public device_t
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{
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public:
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nick_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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virtual ~nick_device();
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void set_vram(UINT8 *vram) { m_videoram = vram; }
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DECLARE_WRITE8_MEMBER(reg_w);
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UINT32 screen_update_epnick(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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private:
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inline UINT8 fetch_byte(UINT32 offs) { return m_videoram[offs & 0x0ffff]; }
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void write_pixel(int ci);
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void calc_visible_clocks(int width);
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void init();
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void write_border(int clocks);
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void do_left_margin();
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void do_right_margin();
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int get_color_index(int pen_index);
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void write_pixels2color(UINT8 pen0, UINT8 pen1, UINT8 data_byte);
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void write_pixels2color_lpixel(UINT8 pen0, UINT8 pen1, UINT8 data_byte);
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void write_pixels(UINT8 data_byte, UINT8 char_idx);
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void write_pixels_lpixel(UINT8 data_byte, UINT8 char_idx);
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void do_pixel(int clocks_visible);
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void do_lpixel(int clocks_visible);
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void do_attr(int clocks_visible);
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void do_ch256(int clocks_visible);
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void do_ch128(int clocks_visible);
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void do_ch64(int clocks_visible);
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void do_display();
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void update_lpt();
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void reload_lpt();
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void do_line();
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void do_screen(bitmap_ind16 &bm);
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bitmap_ind16 m_bitmap;
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/* horizontal position */
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UINT8 horizontal_clock;
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/* current scanline within LPT */
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UINT8 m_scanline_count;
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UINT8 m_FIXBIAS;
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UINT8 m_BORDER;
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UINT8 m_LPL;
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UINT8 m_LPH;
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UINT16 m_LD1;
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UINT16 m_LD2;
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LPT_ENTRY m_LPT;
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UINT16 *m_dest;
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int m_dest_pos;
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int m_dest_max_pos;
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UINT8 m_reg[16];
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/* first clock visible on left hand side */
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int m_first_visible_clock;
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/* first clock visible on right hand side */
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int m_last_visible_clock;
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/* given a bit pattern, this will get the pen index */
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UINT8 m_pen_idx_4col[256];
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/* given a bit pattern, this will get the pen index */
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UINT8 m_pen_idx_16col[256];
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UINT8 *m_videoram;
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};
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// device type definition
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extern const device_type NICK;
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/***************************************************************************
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DEVICE CONFIGURATION MACROS
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***************************************************************************/
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#define MCFG_NICK_ADD(_tag) \
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MCFG_DEVICE_ADD(_tag, NICK, 0)
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#endif
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