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author Sergey Svishchev <shattered@users.sourceforge.net>2015-08-30 14:52:33 +0300
committer Sergey Svishchev <shattered@users.sourceforge.net>2015-08-30 15:06:06 +0300
commit28287d2970c436de2b1de9ed30270c25f1349fc1 (patch)
tree0417d798ca5e3974f7c7e25bed3c25aeed03c72b /src/mess
parentae053d119aadb1a0b2a41186935f7c874838c0e5 (diff)
New skeleton: dvk_kcgd (colour graphics display controller for DVK series)
Diffstat (limited to 'src/mess')
-rw-r--r--src/mess/drivers/dvk_kcgd.c384
1 files changed, 384 insertions, 0 deletions
diff --git a/src/mess/drivers/dvk_kcgd.c b/src/mess/drivers/dvk_kcgd.c
new file mode 100644
index 00000000000..cc379085350
--- /dev/null
+++ b/src/mess/drivers/dvk_kcgd.c
@@ -0,0 +1,384 @@
+/***************************************************************************
+
+ KCGD (Kontroller Cvetnogo Graficheskogo Displeya = Colour Graphics
+ Display Controller), a replacement for KSM (dvk_ksm.c) in later
+ models of DVK desktops.
+
+ MPI (Q-Bus clone) board. Interfaces with MS7004 (DEC LK201 workalike)
+ keyboard, mouse, and monochrome or color CRT.
+
+ To do:
+ - K1801VM2 CPU core (interrupts and EVNT pin, full EIS set, other insns)
+ - Everything else :-)
+
+****************************************************************************/
+
+#include "emu.h"
+
+#include "bus/rs232/rs232.h"
+#include "cpu/t11/t11.h"
+#include "machine/clock.h"
+#include "machine/ms7004.h"
+
+#define KCGD_TOTAL_HORZ 1000 // XXX verify
+#define KCGD_DISP_HORZ 800
+#define KCGD_HORZ_START 200 // XXX verify
+
+#define KCGD_TOTAL_VERT 600 // XXX verify
+#define KCGD_DISP_VERT 480
+#define KCGD_VERT_START 100 // XXX verify
+
+#define KCGD_STATUS_PAGE 0
+#define KCGD_STATUS_INTERLACE 1
+#define KCGD_STATUS_TIMER_INT 5
+#define KCGD_STATUS_MODE_INT 6
+#define KCGD_STATUS_MODE_LAST 7
+#define KCGD_STATUS_TIMER_VAL 15
+
+#define KCGD_PAGE_0 015574
+#define KCGD_PAGE_1 005574
+
+#define VERBOSE_DBG 1 /* general debug messages */
+
+#define DBG_LOG(N,M,A) \
+ do { \
+ if(VERBOSE_DBG>=N) \
+ { \
+ if( M ) \
+ logerror("%11.6f at %s: %-24s",machine().time().as_double(),machine().describe_context(),(char*)M ); \
+ logerror A; \
+ } \
+ } while (0)
+
+
+class kcgd_state : public driver_device
+{
+public:
+ kcgd_state(const machine_config &mconfig, device_type type, const char *tag) :
+ driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+// m_ms7004(*this, "ms7004"),
+ m_palette(*this, "palette"),
+ m_screen(*this, "screen")
+ { }
+
+ virtual void machine_reset();
+ virtual void video_start();
+ UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ TIMER_DEVICE_CALLBACK_MEMBER(scanline_callback);
+ DECLARE_PALETTE_INIT(kcgd);
+
+ enum
+ {
+ TIMER_ID_VSYNC_ON,
+ TIMER_ID_VSYNC_OFF,
+ TIMER_ID_500HZ
+ };
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
+
+ DECLARE_WRITE_LINE_MEMBER(write_keyboard_clock);
+ DECLARE_WRITE_LINE_MEMBER(write_line_clock);
+
+ DECLARE_READ16_MEMBER(vram_addr_r);
+ DECLARE_READ16_MEMBER(vram_data_r);
+ DECLARE_READ16_MEMBER(vram_mmap_r);
+ DECLARE_WRITE16_MEMBER(vram_addr_w);
+ DECLARE_WRITE16_MEMBER(vram_data_w);
+ DECLARE_WRITE16_MEMBER(vram_mmap_w);
+ DECLARE_READ16_MEMBER(status_r);
+ DECLARE_WRITE16_MEMBER(status_w);
+ DECLARE_READ8_MEMBER(palette_index_r);
+ DECLARE_READ8_MEMBER(palette_data_r);
+ DECLARE_WRITE8_MEMBER(palette_index_w);
+ DECLARE_WRITE8_MEMBER(palette_data_w);
+
+ emu_timer *m_vsync_on_timer;
+ emu_timer *m_vsync_off_timer;
+ emu_timer *m_500hz_timer;
+
+private:
+ void draw_scanline(UINT16 *p, UINT16 offset);
+ rectangle m_tmpclip;
+ bitmap_ind16 m_tmpbmp;
+
+ struct {
+ UINT16 status; // 167770
+ UINT8 control; // 167772
+ int palette_index, vram_addr;
+ UINT8 palette[16];
+ } m_video;
+ UINT32 *m_videoram;
+
+protected:
+ required_device<cpu_device> m_maincpu;
+// required_device<ms7004_device> m_ms7004;
+ required_device<palette_device> m_palette;
+ required_device<screen_device> m_screen;
+};
+
+static ADDRESS_MAP_START( kcgd_mem, AS_PROGRAM, 16, kcgd_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE (0000000, 0077777) AM_READWRITE(vram_mmap_r, vram_mmap_w)
+ AM_RANGE (0100000, 0157777) AM_ROM
+ AM_RANGE (0160000, 0160001) AM_MIRROR(03774) AM_READWRITE(vram_addr_r, vram_addr_w)
+ AM_RANGE (0160002, 0160003) AM_MIRROR(03774) AM_READWRITE(vram_data_r, vram_data_w)
+ AM_RANGE (0167770, 0167771) AM_READWRITE(status_r, status_w)
+ AM_RANGE (0167772, 0167773) AM_READWRITE8(palette_index_r, palette_index_w, 0x00ff) // reads always return 0
+ AM_RANGE (0167772, 0167773) AM_READWRITE8(palette_data_r, palette_data_w, 0xff00)
+// AM_RANGE (0176560, 0176567) AM_RAM // USART2 -- host
+// AM_RANGE (0177560, 0177567) AM_RAM // USART3 -- keyboard
+ADDRESS_MAP_END
+
+void kcgd_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
+{
+ switch (id)
+ {
+/*
+ case TIMER_ID_VSYNC_ON:
+ m_maincpu->set_input_line(INPUT_LINE_EVNT, ASSERT_LINE);
+ break;
+
+ case TIMER_ID_VSYNC_OFF:
+ m_maincpu->set_input_line(INPUT_LINE_EVNT, CLEAR_LINE);
+ break;
+*/
+ case TIMER_ID_500HZ:
+ m_video.status ^= (1 << KCGD_STATUS_TIMER_VAL);
+ break;
+ }
+}
+
+void kcgd_state::machine_reset()
+{
+ memset(&m_video, 0, sizeof(m_video));
+}
+
+void kcgd_state::video_start()
+{
+// screen_device *screen = machine().device<screen_device>("screen");
+
+ // 64 kwords, word size is 17 bits
+ m_videoram = auto_alloc_array(machine(), UINT32, 65536);
+
+ m_tmpclip = rectangle(0, KCGD_DISP_HORZ-1, 0, KCGD_DISP_VERT-1);
+ m_tmpbmp.allocate(KCGD_DISP_HORZ, KCGD_DISP_VERT);
+/*
+ m_vsync_on_timer = timer_alloc(TIMER_ID_VSYNC_ON);
+ m_vsync_on_timer->adjust(screen->time_until_pos(0, 0), 0, screen->frame_period());
+
+ m_vsync_off_timer = timer_alloc(TIMER_ID_VSYNC_OFF);
+ m_vsync_off_timer->adjust(screen->time_until_pos(16, 0), 0, screen->frame_period());
+*/
+ m_500hz_timer = timer_alloc(TIMER_ID_500HZ);
+ m_500hz_timer->adjust(attotime::from_hz(500), 0, attotime::from_hz(500));
+}
+
+PALETTE_INIT_MEMBER(kcgd_state, kcgd)
+{
+ for (int i = 0; i < 16; i++)
+ {
+ palette.set_pen_color(i, i?i:255, i?i:255, i?i:255);
+ }
+}
+
+/*
+ VRAM is 128K and is word-addressable, so address fits into 16 bits.
+ Low 32K of VRAM are not used to store pixel data -- XXX.
+*/
+WRITE16_MEMBER(kcgd_state::vram_addr_w)
+{
+ DBG_LOG(3,"VRAM WA", ("%06o\n", data));
+ m_video.vram_addr = data;
+}
+
+READ16_MEMBER(kcgd_state::vram_addr_r)
+{
+ DBG_LOG(3,"VRAM RA", ("\n"));
+ return m_video.vram_addr;
+}
+
+WRITE16_MEMBER(kcgd_state::vram_data_w)
+{
+ DBG_LOG(1,"VRAM W2", ("%06o <- %04XH\n", m_video.vram_addr, data));
+ m_videoram[m_video.vram_addr] = data | (BIT(m_video.control, 7) << 16);
+}
+
+READ16_MEMBER(kcgd_state::vram_data_r)
+{
+ DBG_LOG(2,"VRAM R2", ("%06o\n", m_video.vram_addr));
+ m_video.status = (m_video.status & 0xff7f) | (BIT(m_videoram[m_video.vram_addr], 16) << 7);
+ return (UINT16) (m_videoram[m_video.vram_addr] & 0xffff);
+}
+
+WRITE16_MEMBER(kcgd_state::vram_mmap_w)
+{
+ DBG_LOG(3,"VRAM W1", ("%06o <- %04XH\n", offset, data));
+ m_videoram[offset] = data | (BIT(m_video.control, 7) << 16);
+}
+
+READ16_MEMBER(kcgd_state::vram_mmap_r)
+{
+ DBG_LOG(3,"VRAM R1", ("%06o\n", offset));
+ return (UINT16) (m_videoram[offset] & 0xffff);
+}
+
+WRITE16_MEMBER(kcgd_state::status_w)
+{
+ DBG_LOG(1,"Status W", ("data %04XH (useful %02XH)\n", data, data & 0x63));
+ // bits 7 and 15 are read-only
+ m_video.status = (m_video.status & 0x8080) | (data & 0x7f7f);
+}
+
+READ16_MEMBER(kcgd_state::status_r)
+{
+ UINT16 data = m_video.status ^ (BIT(m_video.control, 6) << 7);
+ DBG_LOG(1,"Status R", ("data %04X index %d\n", data, m_video.palette_index));
+ return data;
+}
+
+WRITE8_MEMBER(kcgd_state::palette_index_w)
+{
+ m_video.control = data;
+ m_video.palette_index = ((data >> 2) & 15);
+ DBG_LOG(1,"Palette index, Control W", ("data %02XH index %d\n", data, m_video.palette_index));
+}
+
+WRITE8_MEMBER(kcgd_state::palette_data_w)
+{
+ DBG_LOG(1,"Palette data W", ("data %02XH index %d\n", data, m_video.palette_index));
+ m_video.palette[m_video.palette_index] = data;
+ m_palette->set_pen_color(m_video.palette_index,
+ 85*(data & 3), 85*((data >> 2) & 3), 85*((data >> 4) & 3));
+}
+
+READ8_MEMBER(kcgd_state::palette_index_r)
+{
+ return 0;
+}
+
+READ8_MEMBER(kcgd_state::palette_data_r)
+{
+ DBG_LOG(1,"Palette data R", ("index %d\n", m_video.palette_index));
+ return m_video.palette[m_video.palette_index];
+}
+
+/*
+ Raster sizes are:
+ - 800(400)x480 in hires(lores) 60 Hz interlaced mode
+ - 800(400)x240 in hires(lores) 30 Hz progressive mode
+
+ Video memory is 17 bits wide (bit 16 indicates hi/lo res mode for each word,
+ host writes it separately (via bit 7 in 167772).
+*/
+
+void kcgd_state::draw_scanline(UINT16 *p, UINT16 offset)
+{
+ int i;
+
+ for ( i = 0; i < 100; i++ )
+ {
+ UINT32 data = m_videoram[ offset++ ];
+ if (BIT(data, 16)) {
+ *p = ( data >> 12) & 0x0F; p++;
+ *p = ( data >> 12) & 0x0F; p++;
+ *p = ( data >> 8 ) & 0x0F; p++;
+ *p = ( data >> 8 ) & 0x0F; p++;
+ *p = ( data >> 4 ) & 0x0F; p++;
+ *p = ( data >> 4 ) & 0x0F; p++;
+ *p = data & 0x0F; p++;
+ *p = data & 0x0F; p++;
+ } else {
+ *p = 5*(( data >> 14) & 0x03); p++;
+ *p = 5*(( data >> 12) & 0x03); p++;
+ *p = 5*(( data >> 10) & 0x03); p++;
+ *p = 5*(( data >> 8 ) & 0x03); p++;
+ *p = 5*(( data >> 6 ) & 0x03); p++;
+ *p = 5*(( data >> 4 ) & 0x03); p++;
+ *p = 5*(( data >> 2 ) & 0x03); p++;
+ *p = 5*( data & 0x03); p++;
+ }
+ }
+}
+
+TIMER_DEVICE_CALLBACK_MEMBER(kcgd_state::scanline_callback)
+{
+ UINT16 y = m_screen->vpos(), offset;
+
+ if (y < KCGD_VERT_START) return;
+ y -= KCGD_VERT_START;
+ if (y >= KCGD_DISP_VERT) return;
+
+ offset = BIT(m_video.status, KCGD_STATUS_PAGE) ? (KCGD_PAGE_1 >> 1) : (KCGD_PAGE_0 >> 1);
+
+ DBG_LOG(2,"scanline_cb", ("frame %d y %.3d page %d offset %04X *offset %04X\n",
+ m_screen->frame_number(), BIT(m_video.status, KCGD_STATUS_PAGE),
+ y, offset + y, m_videoram[offset + y]));
+
+ draw_scanline(&m_tmpbmp.pix16(y), m_videoram[offset + (KCGD_DISP_VERT-1) - y]);
+}
+
+UINT32 kcgd_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ copybitmap(bitmap, m_tmpbmp, 0, 0, KCGD_HORZ_START, KCGD_VERT_START, cliprect);
+ return 0;
+}
+
+/* F4 Character Displayer */
+static const gfx_layout kcgd_charlayout =
+{
+ 8, 10, /* 8x10 pixels */
+ 256, /* 256 characters */
+ 1, /* 1 bits per pixel */
+ { 0 }, /* no bitplanes */
+ /* x offsets */
+ { 0, 1, 2, 3, 4, 5, 6, 7 },
+ /* y offsets */
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8 },
+ 8*10 /* every char takes 10 bytes */
+};
+
+static GFXDECODE_START( kcgd )
+ GFXDECODE_ENTRY("maincpu", 0112236, kcgd_charlayout, 0, 1)
+GFXDECODE_END
+
+static MACHINE_CONFIG_START( kcgd, kcgd_state )
+ MCFG_CPU_ADD("maincpu", K1801VM2, XTAL_30_8MHz/4)
+ MCFG_CPU_PROGRAM_MAP(kcgd_mem)
+ MCFG_T11_INITIAL_MODE(0100000)
+
+ MCFG_TIMER_DRIVER_ADD_PERIODIC("scantimer", kcgd_state, scanline_callback, attotime::from_hz(50*28*11)) // XXX verify
+ MCFG_TIMER_START_DELAY(attotime::from_hz(XTAL_30_8MHz/KCGD_HORZ_START))
+
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_UPDATE_DRIVER(kcgd_state, screen_update)
+ MCFG_SCREEN_RAW_PARAMS(XTAL_30_8MHz, KCGD_TOTAL_HORZ, KCGD_HORZ_START,
+ KCGD_HORZ_START+KCGD_DISP_HORZ, KCGD_TOTAL_VERT, KCGD_VERT_START,
+ KCGD_VERT_START+KCGD_DISP_VERT);
+
+ MCFG_SCREEN_PALETTE("palette")
+ MCFG_PALETTE_ADD("palette", 16)
+ MCFG_PALETTE_INIT_OWNER(kcgd_state, kcgd)
+
+ MCFG_GFXDECODE_ADD("gfxdecode", "palette", kcgd)
+#if 0
+ MCFG_DEVICE_ADD("ms7004", MS7004, 0)
+ MCFG_MS7004_TX_HANDLER(DEVWRITELINE("i8251kbd", i8251_device, write_rxd))
+
+ MCFG_DEVICE_ADD("keyboard_clock", CLOCK, 4800*16)
+ MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(kcgd_state, write_keyboard_clock))
+#endif
+MACHINE_CONFIG_END
+
+ROM_START( dvk_kcgd )
+ ROM_REGION16_BE(0x100000,"maincpu", ROMREGION_ERASE00)
+ ROM_DEFAULT_BIOS("181")
+ ROM_SYSTEM_BIOS(0, "181", "mask 181")
+ ROMX_LOAD("kr1801re2-181.bin", 0100000, 020000, CRC(acac124f) SHA1(412c3eb71bece6f791fc5a9d707cf4692fd0b45b), ROM_BIOS(1))
+ ROM_SYSTEM_BIOS(1, "182", "mask 182")
+ ROMX_LOAD("kr1801re2-182.bin", 0100000, 020000, CRC(3ca2921a) SHA1(389b30c40ed7e41dae71d58c7bff630359a48153), ROM_BIOS(2))
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1987, dvk_kcgd, 0, 0, kcgd, 0, driver_device, 0, "USSR", "DVK KCGD", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )