mirror of
https://github.com/holub/mame
synced 2025-05-23 14:19:01 +03:00
Imported SAA5050 emulation from MESS and made it a device. Updated malzak.c to use it, removing the almost identical implementation in the driver.
Out of whatsnew: Unfortunately, I was unable to make both malzak and p2000t (in MESS) to work without a small kludge, clearly documented in the source. I plan to further investigating the problem once I manage to merge the other 505x variants (later)
This commit is contained in:
Fabio Priuli
parent
26ef740b4b
commit
9ccef5fb60
2
.gitattributes
vendored
2
.gitattributes
vendored
@ -1010,6 +1010,8 @@ src/emu/video/rgbutil.h svneol=native#text/plain
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src/emu/video/rgbvmx.h svneol=native#text/plain
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src/emu/video/s2636.c svneol=native#text/plain
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src/emu/video/s2636.h svneol=native#text/plain
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src/emu/video/saa5050.c svneol=native#text/plain
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src/emu/video/saa5050.h svneol=native#text/plain
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src/emu/video/tlc34076.c svneol=native#text/plain
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src/emu/video/tlc34076.h svneol=native#text/plain
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src/emu/video/tms34061.c svneol=native#text/plain
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@ -184,6 +184,7 @@ EMUVIDEOOBJS = \
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$(EMUVIDEO)/resnet.o \
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$(EMUVIDEO)/rgbutil.o \
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$(EMUVIDEO)/s2636.o \
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$(EMUVIDEO)/saa5050.o \
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$(EMUVIDEO)/tlc34076.o \
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$(EMUVIDEO)/tms34061.o \
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$(EMUVIDEO)/tms9927.o \
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390
src/emu/video/saa5050.c
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390
src/emu/video/saa5050.c
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@ -0,0 +1,390 @@
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/***************************************************************************
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saa5050.c
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Functions to emulate the
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SAA5050 - Teletext Character Generator.
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TODO:
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- Implement BOX and dirtybuffer
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- Add support for non-English version (SAA505x), possibly merging
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src/mess/video/saa505x.c unsed by bbc.c in MESS
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- Investigate why supporting code 0 behavior breaks p2000t vscroll
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in MESS (but not supporting breaks malzak title background)
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- x,y sizes should probably be calculated from the screen parameters
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rather than passed in the device interface
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***************************************************************************/
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#include "driver.h"
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#include "video/saa5050.h"
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#define SAA5050_DBLHI 0x0001
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#define SAA5050_SEPGR 0x0002
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#define SAA5050_FLASH 0x0004
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#define SAA5050_BOX 0x0008
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#define SAA5050_GRAPH 0x0010
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#define SAA5050_CONCEAL 0x0020
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#define SAA5050_HOLDGR 0x0040
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#define SAA5050_BLACK 0
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#define SAA5050_WHITE 7
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typedef struct _saa5050_state saa5050_state;
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struct _saa5050_state
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{
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const device_config *screen;
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int gfxnum;
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int x, y;
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int size;
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int rev;
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UINT8 * videoram;
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UINT16 flags;
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UINT8 forecol;
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UINT8 backcol;
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UINT8 prvcol;
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UINT8 prvchr;
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INT8 frame_count;
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};
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/*************************************
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*
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* Inline functions
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*
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*************************************/
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INLINE saa5050_state *get_safe_token( const device_config *device )
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{
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assert(device != NULL);
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assert(device->token != NULL);
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assert(device->type == SAA5050);
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return (saa5050_state *)device->token;
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}
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INLINE const saa5050_interface *get_interface( const device_config *device )
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{
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assert(device != NULL);
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assert((device->type == SAA5050));
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return (const saa5050_interface *) device->static_config;
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}
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/*************************************
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*
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* Graphics definitions
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*
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*************************************/
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static const gfx_layout saa5050_charlayout =
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{
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6, 10,
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256,
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1,
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{ 0 },
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{ 2, 3, 4, 5, 6, 7 },
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{ 0*8, 1*8, 2*8, 3*8, 4*8,
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5*8, 6*8, 7*8, 8*8, 9*8 },
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8 * 10
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};
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static const gfx_layout saa5050_hilayout =
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{
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6, 10,
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256,
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1,
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{ 0 },
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{ 2, 3, 4, 5, 6, 7 },
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{ 0*8, 0*8, 1*8, 1*8, 2*8,
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2*8, 3*8, 3*8, 4*8, 4*8 },
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8 * 10
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};
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static const gfx_layout saa5050_lolayout =
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{
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6, 10,
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256,
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1,
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{ 0 },
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{ 2, 3, 4, 5, 6, 7 },
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{ 5*8, 5*8, 6*8, 6*8, 7*8,
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7*8, 8*8, 8*8, 9*8, 9*8 },
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8 * 10
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};
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GFXDECODE_START( saa5050 )
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GFXDECODE_ENTRY( "gfx1", 0x0000, saa5050_charlayout, 0, 64 )
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GFXDECODE_ENTRY( "gfx1", 0x0000, saa5050_hilayout, 0, 64 )
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GFXDECODE_ENTRY( "gfx1", 0x0000, saa5050_lolayout, 0, 64 )
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GFXDECODE_END
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/*************************************
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*
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* Palette initialization
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*
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*************************************/
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static const UINT8 saa5050_colors[8 * 3] =
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{
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0x00, 0x00, 0x00, /* black */
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0xff, 0x00, 0x00, /* red */
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0x00, 0xff, 0x00, /* green */
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0xff, 0xff, 0x00, /* yellow */
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0x00, 0x00, 0xff, /* blue */
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0xff, 0x00, 0xff, /* magenta */
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0x00, 0xff, 0xff, /* cyan */
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0xff, 0xff, 0xff /* white */
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};
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static const UINT16 saa5050_palette[64 * 2] = /* bgnd, fgnd */
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{
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0,1, 0,1, 0,2, 0,3, 0,4, 0,5, 0,6, 0,7,
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1,0, 1,1, 1,2, 1,3, 1,4, 1,5, 1,6, 1,7,
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2,0, 2,1, 2,2, 2,3, 2,4, 2,5, 2,6, 2,7,
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3,0, 3,1, 3,2, 3,3, 3,4, 3,5, 3,6, 3,7,
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4,0, 4,1, 4,2, 4,3, 4,4, 4,5, 4,6, 4,7,
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5,0, 5,1, 5,2, 5,3, 5,4, 5,5, 5,6, 5,7,
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6,0, 6,1, 6,2, 6,3, 6,4, 6,5, 6,6, 6,7,
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7,0, 7,1, 7,2, 7,3, 7,4, 7,5, 7,6, 7,7
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};
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PALETTE_INIT( saa5050 )
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{
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UINT8 i, r, g, b;
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machine->colortable = colortable_alloc(machine, 8);
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for ( i = 0; i < 8; i++ )
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{
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r = saa5050_colors[i * 3];
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g = saa5050_colors[i * 3 + 1];
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b = saa5050_colors[i * 3 + 2];
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colortable_palette_set_color(machine->colortable, i, MAKE_RGB(r, g, b));
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}
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for (i = 0; i < 128; i++)
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colortable_entry_set_value(machine->colortable, i, saa5050_palette[i]);
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}
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/*************************************
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*
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* Videoram access handlers
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*
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*************************************/
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WRITE8_DEVICE_HANDLER( saa5050_videoram_w )
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{
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saa5050_state *saa5050 = get_safe_token(device);
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saa5050->videoram[offset] = data;
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}
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READ8_DEVICE_HANDLER( saa5050_videoram_r )
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{
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saa5050_state *saa5050 = get_safe_token(device);
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return saa5050->videoram[offset];
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}
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/*************************************
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*
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* Emulation
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*
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*************************************/
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/* this should probably be put at the end of saa5050 update,
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but p2000t in MESS does not seem to currently support it.
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Hence, we leave it independent for the moment */
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void saa5050_frame_advance( const device_config *device )
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{
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saa5050_state *saa5050 = get_safe_token(device);
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saa5050->frame_count++;
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if (saa5050->frame_count > 50)
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saa5050->frame_count = 0;
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}
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void saa5050_update( const device_config *device, bitmap_t *bitmap, const rectangle *cliprect )
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{
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saa5050_state *saa5050 = get_safe_token(device);
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int code, colour;
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int sx, sy, ssy;
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for (sy = 0; sy <= saa5050->y; sy++)
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{
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/* Set start of line state */
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saa5050->flags = 0;
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saa5050->prvchr = 32;
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saa5050->forecol = SAA5050_WHITE;
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saa5050->prvcol = SAA5050_WHITE;
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saa5050->backcol = SAA5050_BLACK;
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/* should we go in reverse order? */
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ssy = saa5050->rev ? saa5050->y - sy : sy;
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for (sx = 0; sx < saa5050->x; sx++)
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{
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int blank = 0;
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code = saa5050->videoram[ssy * saa5050->size + sx];
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if (code < 32)
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{
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switch (code)
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{
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case 0x00:
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#ifndef MESS
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blank = 1; // code 0x00 should not display anything, unless HOLDGR is set
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#endif
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break;
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case 0x01: case 0x02: case 0x03: case 0x04:
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case 0x05: case 0x06: case 0x07:
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saa5050->prvcol = saa5050->forecol = code;
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saa5050->flags &= ~(SAA5050_GRAPH | SAA5050_CONCEAL);
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break;
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case 0x11: case 0x12: case 0x13: case 0x14:
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case 0x15: case 0x16: case 0x17:
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saa5050->prvcol = (saa5050->forecol = (code & 0x07));
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saa5050->flags &= ~SAA5050_CONCEAL;
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saa5050->flags |= SAA5050_GRAPH;
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break;
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case 0x08:
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saa5050->flags |= SAA5050_FLASH;
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break;
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case 0x09:
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saa5050->flags &= ~SAA5050_FLASH;
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break;
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case 0x0a:
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saa5050->flags |= SAA5050_BOX;
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break;
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case 0x0b:
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saa5050->flags &= ~SAA5050_BOX;
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break;
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case 0x0c:
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saa5050->flags &= ~SAA5050_DBLHI;
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break;
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case 0x0d:
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saa5050->flags |= SAA5050_DBLHI;
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break;
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case 0x18:
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saa5050->flags |= SAA5050_CONCEAL;
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break;
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case 0x19:
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saa5050->flags |= SAA5050_SEPGR;
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break;
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case 0x1a:
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saa5050->flags &= ~SAA5050_SEPGR;
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break;
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case 0x1c:
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saa5050->backcol = SAA5050_BLACK;
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break;
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case 0x1d:
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saa5050->backcol = saa5050->prvcol;
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break;
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case 0x1e:
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saa5050->flags |= SAA5050_HOLDGR;
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break;
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case 0x1f:
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saa5050->flags &= ~SAA5050_HOLDGR;
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break;
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}
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if (saa5050->flags & SAA5050_HOLDGR)
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code = saa5050->prvchr;
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else
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code = 32;
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}
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if (code & 0x80)
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colour = (saa5050->forecol << 3) | saa5050->backcol;
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else
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colour = saa5050->forecol | (saa5050->backcol << 3);
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if (saa5050->flags & SAA5050_CONCEAL)
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code = 32;
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else if ((saa5050->flags & SAA5050_FLASH) && (saa5050->frame_count > 38))
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code = 32;
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else
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{
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saa5050->prvchr = code;
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if ((saa5050->flags & SAA5050_GRAPH) && (code & 0x20))
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{
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code += (code & 0x40) ? 64 : 96;
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if (saa5050->flags & SAA5050_SEPGR)
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code += 64;
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}
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}
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if((blank == 0) || (saa5050->flags & SAA5050_HOLDGR))
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{
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if (saa5050->flags & SAA5050_DBLHI)
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{
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drawgfx_opaque(bitmap, cliprect, saa5050->screen->machine->gfx[saa5050->gfxnum + 1], code, colour, 0, 0, sx * 6, ssy * 10);
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drawgfx_opaque(bitmap, cliprect, saa5050->screen->machine->gfx[saa5050->gfxnum + 2], code, colour, 0, 0, sx * 6, (ssy + 1) * 10);
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}
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else
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{
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drawgfx_opaque(bitmap, cliprect, saa5050->screen->machine->gfx[saa5050->gfxnum + 0], code, colour, 0, 0, sx * 6, ssy * 10);
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}
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}
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}
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if (saa5050->flags & SAA5050_DBLHI)
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{
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sy++;
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saa5050->flags &= ~SAA5050_DBLHI;
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}
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}
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}
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/*****************************************************************************
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DEVICE INTERFACE
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*****************************************************************************/
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static DEVICE_START( saa5050 )
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{
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saa5050_state *saa5050 = get_safe_token(device);
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const saa5050_interface *intf = get_interface(device);
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saa5050->screen = devtag_get_device(device->machine, intf->screen);
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saa5050->gfxnum = intf->gfxnum;
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saa5050->x = intf->x;
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saa5050->y = intf->y;
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saa5050->size = intf->size;
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saa5050->rev = intf->rev;
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saa5050->videoram = auto_alloc_array(device->machine, UINT8, 0x800);
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state_save_register_device_item_pointer(device, 0, saa5050->videoram, 0x800);
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state_save_register_device_item(device, 0, saa5050->flags);
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state_save_register_device_item(device, 0, saa5050->forecol);
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state_save_register_device_item(device, 0, saa5050->backcol);
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state_save_register_device_item(device, 0, saa5050->prvcol);
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state_save_register_device_item(device, 0, saa5050->prvchr);
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state_save_register_device_item(device, 0, saa5050->frame_count);
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}
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static DEVICE_RESET( saa5050 )
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{
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saa5050_state *saa5050 = get_safe_token(device);
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memset(saa5050->videoram, 0x00, 0x800);
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saa5050->flags = 0;
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saa5050->forecol = SAA5050_WHITE;
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saa5050->backcol = SAA5050_BLACK;
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saa5050->prvcol = SAA5050_WHITE;
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saa5050->prvchr = 32;
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saa5050->frame_count = 0;
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}
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static const char DEVTEMPLATE_SOURCE[] = __FILE__;
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#define DEVTEMPLATE_ID( p, s ) p##saa5050##s
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#define DEVTEMPLATE_FEATURES DT_HAS_START | DT_HAS_RESET
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#define DEVTEMPLATE_NAME "SAA5050"
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#define DEVTEMPLATE_FAMILY "SAA5050 Teletext Character Generator"
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#define DEVTEMPLATE_CLASS DEVICE_CLASS_VIDEO
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#include "devtempl.h"
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62
src/emu/video/saa5050.h
Normal file
62
src/emu/video/saa5050.h
Normal file
@ -0,0 +1,62 @@
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/*****************************************************************************
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*
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* video/saa5050.h
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*
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* SAA5050
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*
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****************************************************************************/
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#ifndef __SAA5050_H__
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#define __SAA5050_H__
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#include "devcb.h"
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#define SAA5050_VBLANK 2500
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/***************************************************************************
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TYPE DEFINITIONS
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***************************************************************************/
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typedef struct _saa5050_interface saa5050_interface;
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struct _saa5050_interface
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{
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const char *screen;
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int gfxnum;
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int x, y, size;
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int rev;
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};
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/***************************************************************************
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FUNCTION PROTOTYPES
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***************************************************************************/
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DEVICE_GET_INFO( saa5050 );
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/***************************************************************************
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DEVICE CONFIGURATION MACROS
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***************************************************************************/
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|
||||
#define SAA5050 DEVICE_GET_INFO_NAME( saa5050 )
|
||||
|
||||
#define MDRV_SAA5050_ADD(_tag, _interface) \
|
||||
MDRV_DEVICE_ADD(_tag, SAA5050, 0) \
|
||||
MDRV_DEVICE_CONFIG(_interface)
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
DEVICE I/O FUNCTIONS
|
||||
***************************************************************************/
|
||||
|
||||
void saa5050_update(const device_config *device, bitmap_t *bitmap, const rectangle *cliprect);
|
||||
void saa5050_frame_advance(const device_config *device);
|
||||
|
||||
GFXDECODE_EXTERN( saa5050 );
|
||||
PALETTE_INIT( saa5050 );
|
||||
|
||||
WRITE8_DEVICE_HANDLER( saa5050_videoram_w );
|
||||
READ8_DEVICE_HANDLER( saa5050_videoram_r );
|
||||
|
||||
|
||||
#endif /* __SAA5050_H__ */
|
||||
@ -63,18 +63,16 @@
|
||||
*/
|
||||
|
||||
#include "driver.h"
|
||||
#include "video/s2636.h"
|
||||
#include "cpu/s2650/s2650.h"
|
||||
#include "sound/sn76477.h"
|
||||
|
||||
#define SAA5050_VBLANK 2500
|
||||
#include "video/s2636.h"
|
||||
#include "video/saa5050.h"
|
||||
|
||||
static int malzak_bank1;
|
||||
|
||||
extern int malzak_x;
|
||||
extern int malzak_y;
|
||||
|
||||
extern UINT8 *saa5050_vidram; /* Video RAM for SAA 5050 */
|
||||
|
||||
// in video/malzak.c
|
||||
VIDEO_START( malzak );
|
||||
@ -129,7 +127,7 @@ static ADDRESS_MAP_START( malzak_map, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x1500, 0x15ff) AM_MIRROR(0x6000) AM_DEVREADWRITE("s2636_1", s2636_work_ram_r, s2636_work_ram_w)
|
||||
AM_RANGE(0x1600, 0x16ff) AM_MIRROR(0x6000) AM_RAM_WRITE(malzak_playfield_w)
|
||||
AM_RANGE(0x1700, 0x17ff) AM_MIRROR(0x6000) AM_RAM
|
||||
AM_RANGE(0x1800, 0x1fff) AM_MIRROR(0x6000) AM_RAM AM_BASE(&saa5050_vidram)
|
||||
AM_RANGE(0x1800, 0x1fff) AM_MIRROR(0x6000) AM_DEVREADWRITE("saa5050", saa5050_videoram_r, saa5050_videoram_w)
|
||||
AM_RANGE(0x2000, 0x2fff) AM_ROM
|
||||
AM_RANGE(0x4000, 0x4fff) AM_ROM
|
||||
AM_RANGE(0x6000, 0x6fff) AM_ROM
|
||||
@ -150,7 +148,7 @@ static ADDRESS_MAP_START( malzak2_map, ADDRESS_SPACE_PROGRAM, 8 )
|
||||
AM_RANGE(0x1500, 0x15ff) AM_MIRROR(0x6000) AM_DEVREADWRITE("s2636_1", s2636_work_ram_r, s2636_work_ram_w)
|
||||
AM_RANGE(0x1600, 0x16ff) AM_MIRROR(0x6000) AM_RAM_WRITE(malzak_playfield_w)
|
||||
AM_RANGE(0x1700, 0x17ff) AM_MIRROR(0x6000) AM_RAM AM_BASE_SIZE_GENERIC(nvram)
|
||||
AM_RANGE(0x1800, 0x1fff) AM_MIRROR(0x6000) AM_RAM AM_BASE(&saa5050_vidram)
|
||||
AM_RANGE(0x1800, 0x1fff) AM_MIRROR(0x6000) AM_DEVREADWRITE("saa5050", saa5050_videoram_r, saa5050_videoram_w)
|
||||
AM_RANGE(0x2000, 0x2fff) AM_ROM
|
||||
AM_RANGE(0x4000, 0x4fff) AM_ROM
|
||||
AM_RANGE(0x6000, 0x6fff) AM_ROM
|
||||
@ -363,20 +361,29 @@ static const sn76477_interface sn76477_intf =
|
||||
};
|
||||
|
||||
|
||||
static const s2636_interface s2636_0_config =
|
||||
static const s2636_interface malzac_s2636_0_config =
|
||||
{
|
||||
"screen",
|
||||
0x100,
|
||||
0, -16 /* -8, -16 */
|
||||
};
|
||||
|
||||
static const s2636_interface s2636_1_config =
|
||||
static const s2636_interface malzac_s2636_1_config =
|
||||
{
|
||||
"screen",
|
||||
0x100,
|
||||
0, -16 /* -9, -16 */
|
||||
};
|
||||
|
||||
static const saa5050_interface malzac_saa5050_intf =
|
||||
{
|
||||
"screen",
|
||||
1, /* starting gfxnum */
|
||||
42, 24, 64, /* x, y, size */
|
||||
1 /* rev y order */
|
||||
};
|
||||
|
||||
|
||||
static MACHINE_DRIVER_START( malzak )
|
||||
|
||||
/* basic machine hardware */
|
||||
@ -398,9 +405,10 @@ static MACHINE_DRIVER_START( malzak )
|
||||
|
||||
// MDRV_MACHINE_RESET(malzak)
|
||||
|
||||
MDRV_S2636_ADD("s2636_0", s2636_0_config)
|
||||
MDRV_S2636_ADD("s2636_1", s2636_1_config)
|
||||
MDRV_S2636_ADD("s2636_0", malzac_s2636_0_config)
|
||||
MDRV_S2636_ADD("s2636_1", malzac_s2636_1_config)
|
||||
|
||||
MDRV_SAA5050_ADD("saa5050", malzac_saa5050_intf)
|
||||
MDRV_VIDEO_UPDATE(malzak)
|
||||
|
||||
/* sound hardware */
|
||||
|
||||
@ -14,31 +14,7 @@
|
||||
|
||||
#include "driver.h"
|
||||
#include "video/s2636.h"
|
||||
|
||||
static INT8 frame_count;
|
||||
|
||||
#define SAA5050_DBLHI 0x0001
|
||||
#define SAA5050_SEPGR 0x0002
|
||||
#define SAA5050_FLASH 0x0004
|
||||
#define SAA5050_BOX 0x0008
|
||||
#define SAA5050_GRAPH 0x0010
|
||||
#define SAA5050_CONCEAL 0x0020
|
||||
#define SAA5050_HOLDGR 0x0040
|
||||
|
||||
#define SAA5050_BLACK 0
|
||||
#define SAA5050_WHITE 7
|
||||
|
||||
static struct
|
||||
{
|
||||
UINT16 saa5050_flags;
|
||||
UINT8 saa5050_forecol;
|
||||
UINT8 saa5050_backcol;
|
||||
UINT8 saa5050_prvcol;
|
||||
UINT8 saa5050_prvchr;
|
||||
} saa5050_state;
|
||||
|
||||
|
||||
UINT8* saa5050_vidram; /* Video RAM for SAA 5050 */
|
||||
#include "video/saa5050.h"
|
||||
|
||||
int malzak_x;
|
||||
int malzak_y;
|
||||
@ -52,158 +28,35 @@ static struct playfield
|
||||
|
||||
VIDEO_UPDATE( malzak )
|
||||
{
|
||||
int code, colour;
|
||||
int sx, sy;
|
||||
int x,y;
|
||||
bitmap_t *s2636_0_bitmap;
|
||||
bitmap_t *s2636_1_bitmap;
|
||||
const device_config *s2636_0 = devtag_get_device(screen->machine, "s2636_0");
|
||||
const device_config *s2636_1 = devtag_get_device(screen->machine, "s2636_1");
|
||||
const device_config *saa5050 = devtag_get_device(screen->machine, "saa5050");
|
||||
|
||||
bitmap_fill(bitmap,0,0);
|
||||
bitmap_fill(bitmap, 0, 0);
|
||||
|
||||
// SAA 5050 - Teletext character generator
|
||||
for (sy = 24; sy >= 0; sy--)
|
||||
{
|
||||
/* Set start of line state */
|
||||
saa5050_state.saa5050_flags = 0;
|
||||
saa5050_state.saa5050_prvchr = 32;
|
||||
saa5050_state.saa5050_forecol = SAA5050_WHITE;
|
||||
saa5050_state.saa5050_prvcol = SAA5050_WHITE;
|
||||
saa5050_state.saa5050_backcol = SAA5050_BLACK;
|
||||
|
||||
for (sx = 0; sx < 42; sx++)
|
||||
{
|
||||
int blank = 0;
|
||||
code = saa5050_vidram[sy * 64 + sx];
|
||||
if (code < 32)
|
||||
{
|
||||
switch (code) {
|
||||
case 0x00:
|
||||
blank = 1; // code 0x00 should not display anything
|
||||
break; // unless HOLDGR is set
|
||||
case 0x01: case 0x02: case 0x03: case 0x04:
|
||||
case 0x05: case 0x06: case 0x07:
|
||||
saa5050_state.saa5050_prvcol = saa5050_state.saa5050_forecol = code;
|
||||
saa5050_state.saa5050_flags &= ~(SAA5050_GRAPH | SAA5050_CONCEAL);
|
||||
break;
|
||||
case 0x11: case 0x12: case 0x13: case 0x14:
|
||||
case 0x15: case 0x16: case 0x17:
|
||||
saa5050_state.saa5050_prvcol = (saa5050_state.saa5050_forecol =
|
||||
(code & 0x07));
|
||||
saa5050_state.saa5050_flags &= ~SAA5050_CONCEAL;
|
||||
saa5050_state.saa5050_flags |= SAA5050_GRAPH;
|
||||
break;
|
||||
case 0x08:
|
||||
saa5050_state.saa5050_flags |= SAA5050_FLASH;
|
||||
break;
|
||||
case 0x09:
|
||||
saa5050_state.saa5050_flags &= ~SAA5050_FLASH;
|
||||
break;
|
||||
case 0x0a:
|
||||
saa5050_state.saa5050_flags |= SAA5050_BOX;
|
||||
break;
|
||||
case 0x0b:
|
||||
saa5050_state.saa5050_flags &= ~SAA5050_BOX;
|
||||
break;
|
||||
case 0x0c:
|
||||
saa5050_state.saa5050_flags &= ~SAA5050_DBLHI;
|
||||
break;
|
||||
case 0x0d:
|
||||
saa5050_state.saa5050_flags |= SAA5050_DBLHI;
|
||||
break;
|
||||
case 0x18:
|
||||
saa5050_state.saa5050_flags |= SAA5050_CONCEAL;
|
||||
break;
|
||||
case 0x19:
|
||||
saa5050_state.saa5050_flags |= SAA5050_SEPGR;
|
||||
break;
|
||||
case 0x1a:
|
||||
saa5050_state.saa5050_flags &= ~SAA5050_SEPGR;
|
||||
break;
|
||||
case 0x1c:
|
||||
saa5050_state.saa5050_backcol = SAA5050_BLACK;
|
||||
break;
|
||||
case 0x1d:
|
||||
saa5050_state.saa5050_backcol = saa5050_state.saa5050_prvcol;
|
||||
break;
|
||||
case 0x1e:
|
||||
saa5050_state.saa5050_flags |= SAA5050_HOLDGR;
|
||||
break;
|
||||
case 0x1f:
|
||||
saa5050_state.saa5050_flags &= ~SAA5050_HOLDGR;
|
||||
break;
|
||||
}
|
||||
if (saa5050_state.saa5050_flags & SAA5050_HOLDGR)
|
||||
code = saa5050_state.saa5050_prvchr;
|
||||
else
|
||||
code = 32;
|
||||
}
|
||||
|
||||
if (code & 0x80)
|
||||
colour = (saa5050_state.saa5050_forecol << 3) | saa5050_state.saa5050_backcol;
|
||||
else
|
||||
colour = saa5050_state.saa5050_forecol | (saa5050_state.saa5050_backcol << 3);
|
||||
|
||||
if (saa5050_state.saa5050_flags & SAA5050_CONCEAL)
|
||||
code = 32;
|
||||
else if ((saa5050_state.saa5050_flags & SAA5050_FLASH) && (frame_count > 38))
|
||||
code = 32;
|
||||
else
|
||||
{
|
||||
saa5050_state.saa5050_prvchr = code;
|
||||
if ((saa5050_state.saa5050_flags & SAA5050_GRAPH) && (code & 0x20))
|
||||
{
|
||||
code += (code & 0x40) ? 64 : 96;
|
||||
if (saa5050_state.saa5050_flags & SAA5050_SEPGR)
|
||||
code += 64;
|
||||
}
|
||||
}
|
||||
|
||||
if((blank == 0) || (saa5050_state.saa5050_flags & SAA5050_HOLDGR))
|
||||
{
|
||||
if (saa5050_state.saa5050_flags & SAA5050_DBLHI)
|
||||
{
|
||||
drawgfx_opaque (bitmap, cliprect, screen->machine->gfx[2], code, colour, 0, 0,
|
||||
sx * 6, sy * 10);
|
||||
drawgfx_opaque (bitmap, cliprect, screen->machine->gfx[3], code, colour, 0, 0,
|
||||
sx * 6, (sy + 1) * 10);
|
||||
}
|
||||
else
|
||||
{
|
||||
drawgfx_opaque (bitmap, cliprect, screen->machine->gfx[1], code, colour, 0, 0,
|
||||
sx * 6, sy * 10);
|
||||
}
|
||||
}
|
||||
}
|
||||
if (saa5050_state.saa5050_flags & SAA5050_DBLHI)
|
||||
{
|
||||
sy--;
|
||||
saa5050_state.saa5050_flags &= ~SAA5050_DBLHI;
|
||||
}
|
||||
}
|
||||
|
||||
frame_count++;
|
||||
if(frame_count > 50)
|
||||
frame_count = 0;
|
||||
saa5050_update(saa5050, bitmap, cliprect);
|
||||
saa5050_frame_advance(saa5050);
|
||||
|
||||
// playfield - not sure exactly how this works...
|
||||
for(x = 0;x < 16;x++)
|
||||
for(y = 0; y < 16;y++)
|
||||
for(x = 0; x < 16; x++)
|
||||
for(y = 0; y < 16; y++)
|
||||
{
|
||||
sx = ((x*16-48) - malzak_x);
|
||||
sy = ((y*16) - malzak_y);
|
||||
sx = ((x * 16 - 48) - malzak_x);
|
||||
sy = ((y * 16) - malzak_y);
|
||||
|
||||
if(sx < -271)
|
||||
sx+=512;
|
||||
sx += 512;
|
||||
if(sx < -15)
|
||||
sx+=256;
|
||||
sx += 256;
|
||||
|
||||
drawgfx_transpen(bitmap,cliprect, screen->machine->gfx[0],field[x*16 + y].code,7,0,0,
|
||||
sx, sy, 0);
|
||||
drawgfx_transpen(bitmap,cliprect, screen->machine->gfx[0], field[x * 16 + y].code,7,0,0, sx, sy, 0);
|
||||
}
|
||||
|
||||
/* update the S2636 chips */
|
||||
/* update the S2636 chips */
|
||||
s2636_0_bitmap = s2636_update(s2636_0, cliprect);
|
||||
s2636_1_bitmap = s2636_update(s2636_1, cliprect);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user