Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-19 23:12:11 +03:00
Code Issues Actions 6 Packages Projects Releases Wiki Activity

skyarmy: tweak clocks based on pcb video

Browse Source
This commit is contained in:
hap 2025-02-25 16:31:56 +01:00
parent 02994e4792
commit 981f059c12
1 changed files with 19 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
src/mame/misc/skyarmy.cpp
View File

@ -25,9 +25,12 @@
*/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/74259.h"
#include "machine/timer.h"
#include "sound/ay8910.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"
@ -80,7 +83,7 @@ private:
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
INTERRUPT_GEN_MEMBER(nmi_source);
TIMER_DEVICE_CALLBACK_MEMBER(scanline);
void skyarmy_io_map(address_map &map) ATTR_COLD;
void skyarmy_map(address_map &map) ATTR_COLD;
};
@ -180,10 +183,17 @@ uint32_t skyarmy_state::screen_update(screen_device &screen, bitmap_ind16 &bitma
return 0;
}
INTERRUPT_GEN_MEMBER(skyarmy_state::nmi_source)
TIMER_DEVICE_CALLBACK_MEMBER(skyarmy_state::scanline)
{
if (m_nmi)
int scanline = param;
// 16 NMIs per frame
if ((scanline & 0xf) == 0 && scanline <= 240 && m_nmi)
m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
// vblank interrupt
if (scanline == 248)
m_maincpu->set_input_line(0, HOLD_LINE);
}
@ -313,11 +323,11 @@ GFXDECODE_END
void skyarmy_state::skyarmy(machine_config &config)
{
Z80(config, m_maincpu, 4000000);
Z80(config, m_maincpu, 18.432_MHz_XTAL / 6);
m_maincpu->set_addrmap(AS_PROGRAM, &skyarmy_state::skyarmy_map);
m_maincpu->set_addrmap(AS_IO, &skyarmy_state::skyarmy_io_map);
m_maincpu->set_vblank_int("screen", FUNC(skyarmy_state::irq0_line_hold));
m_maincpu->set_periodic_int(FUNC(skyarmy_state::nmi_source), attotime::from_hz(650));
TIMER(config, "scanline").configure_scanline(FUNC(skyarmy_state::scanline), "screen", 0, 1);
ls259_device &latch(LS259(config, "latch")); // 11C
latch.q_out_cb<0>().set(FUNC(skyarmy_state::coin_counter_w));
@ -328,10 +338,7 @@ void skyarmy_state::skyarmy(machine_config &config)
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
screen.set_size(32*8,32*8);
screen.set_visarea(0*8,32*8-1,1*8,31*8-1);
screen.set_raw(18.432_MHz_XTAL / 3, 384, 0, 256, 264, 8, 248);
screen.set_screen_update(FUNC(skyarmy_state::screen_update));
screen.set_palette(m_palette);
@ -340,8 +347,8 @@ void skyarmy_state::skyarmy(machine_config &config)
/* sound hardware */
SPEAKER(config, "mono").front_center();
AY8910(config, "ay0", 2500000).add_route(ALL_OUTPUTS, "mono", 0.15);
AY8910(config, "ay1", 2500000).add_route(ALL_OUTPUTS, "mono", 0.15);
AY8910(config, "ay0", 18.432_MHz_XTAL / 12).add_route(ALL_OUTPUTS, "mono", 0.5);
AY8910(config, "ay1", 18.432_MHz_XTAL / 12).add_route(ALL_OUTPUTS, "mono", 0.5);
}