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Diffstat (limited to 'src/mess/video/comx35.c')
-rw-r--r--src/mess/video/comx35.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/src/mess/video/comx35.c b/src/mess/video/comx35.c
new file mode 100644
index 00000000000..4b8cd7a4525
--- /dev/null
+++ b/src/mess/video/comx35.c
@@ -0,0 +1,152 @@
+#include "emu.h"
+#include "rendlay.h"
+#include "includes/comx35.h"
+#include "cpu/cosmac/cosmac.h"
+#include "sound/cdp1869.h"
+#include "sound/wave.h"
+#include "video/mc6845.h"
+
+WRITE8_MEMBER( comx35_state::cdp1869_w )
+{
+ UINT16 ma = m_maincpu->get_memory_address();
+
+ switch (offset)
+ {
+ case 3:
+ m_vis->out3_w(space, ma, data);
+ break;
+
+ case 4:
+ m_vis->out4_w(space, ma, data);
+ break;
+
+ case 5:
+ m_vis->out5_w(space, ma, data);
+ break;
+
+ case 6:
+ m_vis->out6_w(space, ma, data);
+ break;
+
+ case 7:
+ m_vis->out7_w(space, ma, data);
+ break;
+ }
+}
+
+/* CDP1869 */
+
+static ADDRESS_MAP_START( cdp1869_page_ram, AS_0, 8, driver_device )
+ AM_RANGE(0x000, 0x7ff) AM_RAM
+ADDRESS_MAP_END
+
+static CDP1869_CHAR_RAM_READ( comx35_charram_r )
+{
+ comx35_state *state = device->machine().driver_data<comx35_state>();
+
+ UINT8 column = pmd & 0x7f;
+ UINT16 charaddr = (column << 4) | cma;
+
+ return state->m_charram[charaddr];
+}
+
+static CDP1869_CHAR_RAM_WRITE( comx35_charram_w )
+{
+ comx35_state *state = device->machine().driver_data<comx35_state>();
+
+ UINT8 column = pmd & 0x7f;
+ UINT16 charaddr = (column << 4) | cma;
+
+ state->m_charram[charaddr] = data;
+}
+
+static CDP1869_PCB_READ( comx35_pcb_r )
+{
+ return BIT(pmd, 7);
+}
+
+WRITE_LINE_MEMBER( comx35_state::prd_w )
+{
+ if ((m_prd == CLEAR_LINE) && (state == ASSERT_LINE))
+ {
+ m_cr1 = m_iden ? CLEAR_LINE : ASSERT_LINE;
+ check_interrupt();
+ }
+
+ m_prd = state;
+
+ m_maincpu->set_input_line(COSMAC_INPUT_LINE_EF1, state);
+}
+
+static CDP1869_INTERFACE( pal_cdp1869_intf )
+{
+ SCREEN_TAG,
+ CDP1869_COLOR_CLK_PAL,
+ CDP1869_PAL,
+ comx35_pcb_r,
+ comx35_charram_r,
+ comx35_charram_w,
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, prd_w)
+};
+
+static CDP1869_INTERFACE( ntsc_cdp1869_intf )
+{
+ SCREEN_TAG,
+ CDP1869_COLOR_CLK_NTSC,
+ CDP1869_NTSC,
+ comx35_pcb_r,
+ comx35_charram_r,
+ comx35_charram_w,
+ DEVCB_DRIVER_LINE_MEMBER(comx35_state, prd_w)
+};
+
+void comx35_state::video_start()
+{
+ // allocate memory
+ m_charram = auto_alloc_array(machine(), UINT8, COMX35_CHARRAM_SIZE);
+
+ // register for save state
+ save_pointer(NAME(m_charram), COMX35_CHARRAM_SIZE);
+}
+
+UINT32 comx35_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ if (screen.width() == CDP1869_SCREEN_WIDTH)
+ {
+ m_vis->screen_update(screen, bitmap, cliprect);
+ }
+ else
+ {
+ m_expansion->screen_update(screen, bitmap, cliprect);
+ }
+
+ return 0;
+}
+
+/* Machine Drivers */
+
+MACHINE_CONFIG_FRAGMENT( comx35_pal_video )
+ MCFG_CDP1869_SCREEN_PAL_ADD(CDP1869_TAG, SCREEN_TAG, CDP1869_DOT_CLK_PAL)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+
+ MCFG_CDP1869_ADD(CDP1869_TAG, CDP1869_DOT_CLK_PAL, pal_cdp1869_intf, cdp1869_page_ram)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+
+ MCFG_SOUND_WAVE_ADD(WAVE_TAG, CASSETTE_TAG)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+MACHINE_CONFIG_END
+
+MACHINE_CONFIG_FRAGMENT( comx35_ntsc_video )
+ MCFG_CDP1869_SCREEN_NTSC_ADD(CDP1869_TAG, SCREEN_TAG, CDP1869_DOT_CLK_NTSC)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+
+ MCFG_CDP1869_ADD(CDP1869_TAG, CDP1869_DOT_CLK_NTSC, ntsc_cdp1869_intf, cdp1869_page_ram)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+
+ MCFG_SOUND_WAVE_ADD(WAVE_TAG, CASSETTE_TAG)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+MACHINE_CONFIG_END