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(MESS) v6809 : last bits

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This commit is contained in:
Robbbert 2013-12-15 09:52:31 +00:00
parent 415e2cc8e9
commit 8093002724
1 changed files with 23 additions and 8 deletions
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31
src/mess/drivers/v6809.c
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@ -37,7 +37,7 @@ ToDo:
- Find the missing character generator rom. - Find the missing character generator rom.
- Add sound. Pressing BEL character issues commands to the timer chip. - Enable sound, when what seems to be a 6840 bug is fixed.
- Schematic is almost useless, riddled with omissions and errors. - Schematic is almost useless, riddled with omissions and errors.
All documents are in French, so no help there. The parts list All documents are in French, so no help there. The parts list
@ -72,8 +72,11 @@ public:
, m_crtc(*this, "crtc") , m_crtc(*this, "crtc")
, m_fdc(*this, "fdc") , m_fdc(*this, "fdc")
, m_floppy0(*this, "fdc:0") , m_floppy0(*this, "fdc:0")
, m_speaker(*this, "speaker")
{ } { }
DECLARE_WRITE_LINE_MEMBER(speaker_en_w);
DECLARE_WRITE_LINE_MEMBER(speaker_w);
DECLARE_READ8_MEMBER(pb_r); DECLARE_READ8_MEMBER(pb_r);
DECLARE_WRITE8_MEMBER(pa_w); DECLARE_WRITE8_MEMBER(pa_w);
DECLARE_WRITE8_MEMBER(videoram_w); DECLARE_WRITE8_MEMBER(videoram_w);
@ -85,6 +88,7 @@ public:
const UINT8 *m_p_chargen; const UINT8 *m_p_chargen;
UINT16 m_video_address; UINT16 m_video_address;
private: private:
bool m_speaker_en;
UINT8 m_video_index; UINT8 m_video_index;
UINT8 m_term_data; UINT8 m_term_data;
UINT8 m_vidbyte; UINT8 m_vidbyte;
@ -93,6 +97,7 @@ private:
required_device<mc6845_device> m_crtc; required_device<mc6845_device> m_crtc;
required_device<mb8876_t> m_fdc; required_device<mb8876_t> m_fdc;
required_device<floppy_connector> m_floppy0; required_device<floppy_connector> m_floppy0;
required_device<speaker_sound_device> m_speaker;
}; };
@ -163,10 +168,7 @@ MC6845_UPDATE_ROW( v6809_update_row )
{ {
mem = (ma + x) & 0x7ff; mem = (ma + x) & 0x7ff;
chr = state->m_p_videoram[mem]; chr = state->m_p_videoram[mem];
if (x == cursor_x) gfx = state->m_p_chargen[(chr<<4) | ra] ^ ((x == cursor_x) ? 0xff : 0);
gfx = 0xff;
else
gfx = state->m_p_chargen[(chr<<4) | ra];
/* Display a scanline of a character (8 pixels) */ /* Display a scanline of a character (8 pixels) */
*p++ = palette[BIT(gfx, 7)]; *p++ = palette[BIT(gfx, 7)];
@ -306,13 +308,26 @@ static const pia6821_interface pia1_intf =
DEVCB_CPU_INPUT_LINE("maincpu", M6809_IRQ_LINE) /* IRQB output */ DEVCB_CPU_INPUT_LINE("maincpu", M6809_IRQ_LINE) /* IRQB output */
}; };
// this should output 1 to enable sound, then output 0 after a short time
// however it continuously outputs 1
WRITE_LINE_MEMBER( v6809_state::speaker_en_w )
{
m_speaker_en = state;
}
WRITE_LINE_MEMBER( v6809_state::speaker_w )
{
// if (m_speaker_en)
// m_speaker->level_w(state);
}
static const ptm6840_interface mc6840_intf = static const ptm6840_interface mc6840_intf =
{ {
XTAL_16MHz / 4, XTAL_16MHz / 4,
{ 0, 0, 0 }, { 4000000/14, 4000000/14, 4000000/14/8 },
{ DEVCB_NULL, { DEVCB_NULL,
DEVCB_DEVICE_LINE_MEMBER("speaker", speaker_sound_device, level_w), DEVCB_DRIVER_LINE_MEMBER(v6809_state, speaker_w),
DEVCB_DEVICE_LINE_MEMBER("speaker", speaker_sound_device, level_w) }, DEVCB_DRIVER_LINE_MEMBER(v6809_state, speaker_en_w) },
DEVCB_CPU_INPUT_LINE("maincpu", M6809_IRQ_LINE) DEVCB_CPU_INPUT_LINE("maincpu", M6809_IRQ_LINE)
}; };