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911_vdt: Screen raw parameters (nw)

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This commit is contained in:
AJR 2018-11-03 14:01:12 -04:00
parent ccda5bdceb
commit 5f2e1268dc
3 changed files with 19 additions and 22 deletions
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1
src/emu/xtal.cpp
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@ -155,6 +155,7 @@ const double XTAL::known_xtals[] = {
10'816'000, /* 10.816_MHz_XTAL Universal 1979-1980 (Cosmic Alien, etc) */
10'920'000, /* 10.92_MHz_XTAL ADDS Viewpoint 60, Viewpoint A2 */
11'000'000, /* 11_MHz_XTAL Mario I8039 sound */
11'004'000, /* 11.004_MHz_XTAL TI 911 VDT */
11'059'200, /* 11.0592_MHz_XTAL Used with MCS-51 to generate common baud rates */
11'200'000, /* 11.2_MHz_XTAL New York, New York */
11'289'000, /* 11.289_MHz_XTAL Vanguard */

33
src/mame/video/911_vdt.cpp
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@ -17,7 +17,6 @@ TODO:
#include "911_chr.h"
#include "911_key.h"
#include "screen.h"
#include "speaker.h"
@ -151,6 +150,8 @@ vdt911_device::vdt911_device(const machine_config &mconfig, const char *tag, dev
: device_t(mconfig, VDT911, tag, owner, clock)
, device_gfx_interface(mconfig, *this, gfx_vdt911, "palette")
, m_beeper(*this, "beeper")
, m_screen(*this, "screen")
, m_keys(*this, "KEY%u", 0U)
, m_keyint_line(*this)
, m_lineint_line(*this)
{
@ -249,7 +250,11 @@ void vdt911_device::device_reset()
else
m_cursor_address_mask = 0x7ff; /* 2 kb of RAM */
m_line_timer->adjust(attotime::from_msec(0), 0, attotime::from_hz(get_refresh_rate()));
// European models have 50 Hz
int lines = (m_model == model::US) || (m_model == model::Japanese) ? 262 : 314;
attotime refresh = attotime::from_hz(11.004_MHz_XTAL / 700 / lines);
m_screen->configure(700, lines, m_screen->visible_area(), refresh.as_attoseconds());
m_line_timer->adjust(attotime::from_msec(0), 0, refresh);
}
/*
@ -461,7 +466,7 @@ WRITE8_MEMBER( vdt911_device::cru_w )
void vdt911_device::refresh(bitmap_ind16 &bitmap, const rectangle &cliprect, int x, int y)
{
gfx_element *gfx = this->gfx(unsigned(m_model));
int height = (m_screen_size == screen_size::char_960) ? 12 : /*25*/24;
int height = (m_screen_size == screen_size::char_960) ? 12 : 24;
int use_8bit_charcodes = USES_8BIT_CHARCODES();
int address = 0;
@ -550,12 +555,10 @@ void vdt911_device::check_keyboard()
modifier_state_t modifier_state;
int repeat_mode;
static const char *const keynames[] = { "KEY0", "KEY1", "KEY2", "KEY3", "KEY4", "KEY5" };
/* read current key state */
for (i = 0; i < 6; i++)
{
key_buf[i] = ioport(keynames[i])->read();
key_buf[i] = m_keys[i]->read();
}
/* parse modifier keys */
@ -664,12 +667,6 @@ void vdt911_device::check_keyboard()
}
}
int vdt911_device::get_refresh_rate()
{
// European models have 50 Hz
return ((m_model == model::US) || (m_model == model::Japanese))? 60 : 50;
}
uint32_t vdt911_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
refresh(bitmap, cliprect, 0, 0);
@ -803,14 +800,10 @@ INPUT_PORTS_END
//-------------------------------------------------
MACHINE_CONFIG_START(vdt911_device::device_add_mconfig)
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_UPDATE_DEVICE(DEVICE_SELF, vdt911_device, screen_update)
MCFG_SCREEN_SIZE(560, 280)
MCFG_SCREEN_VISIBLE_AREA(0, 560-1, 0, /*250*/280-1)
MCFG_SCREEN_PALETTE("palette")
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_raw(11.004_MHz_XTAL, 700, 0, 560, 262, 0, 240);
screen.set_screen_update(FUNC(vdt911_device::screen_update));
screen.set_palette("palette");
SPEAKER(config, "speaker").front_center();
MCFG_DEVICE_ADD("beeper", BEEP, 3250)

7
src/mame/video/911_vdt.h
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@ -7,6 +7,7 @@
#include "sound/beep.h"
#include "emupal.h"
#include "screen.h"
#define vdt911_chr_region ":gfx1"
@ -73,7 +74,6 @@ protected:
private:
void refresh(bitmap_ind16 &bitmap, const rectangle &cliprect, int x, int y);
int get_refresh_rate();
void check_keyboard();
DECLARE_PALETTE_INIT(vdt911);
@ -110,7 +110,10 @@ private:
int m_last_modifier_state;
char m_foreign_mode;
required_device<beep_device> m_beeper;
required_device<beep_device> m_beeper;
required_device<screen_device> m_screen;
required_ioport_array<6> m_keys;
devcb_write_line m_keyint_line;
devcb_write_line m_lineint_line;
};