mirror of
https://github.com/holub/mame
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subhuntr.cpp: Start to flesh out the skeleton - still nowhere near close to working.
This commit is contained in:
Vas Crabb
parent
258f52ae8b
commit
cf5985de0f
@ -1,20 +1,30 @@
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// license:BSD-3-Clause
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// copyright-holders:David Haywood
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// copyright-holders:Vas Crabb
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/*
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QTY Type clock position function
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2x 2636 Programmable Video Interface
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1x 2650 OSC/2 = 1.7897725 MHz 8-bit Microprocessor - main
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1x oscillator 3.579545 MHz
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QTY Type clock position function
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1x 2621 B8 Universal Sync Generator (PAL)
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3x 2636 H5,L5,N5 Programmable Video Interface
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1x 2650 OSC/2 = 1.7897725 MHz 8-bit Microprocessor - main
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1x oscillator 3.579545 MHz
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ROMs
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QTY Type position status
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4x 2708 6F,6H,6L,6N dumped
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1x N82S115 2B dumped
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4x 2708 F7,H7,L7,N7 dumped
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1x N82S115 B2 dumped
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RAMs
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QTY Type position
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2x 2101
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4x 2112-2 G8,G9,H8,H9,L8,L9,M8,M9
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2x 2101-1 B4,C4
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Video uses approximate PAL timings derived from a 3.579MHz crystal
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using a 2621 USG (227 clocks per line, 43-clock HBLANK, 312 lines,
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43-line VBLANK). This gives a resolution of 184*269, which is used for
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the 2636 PVIs. The clock is doubled to 7.15MHz for the text layer,
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giving a resolution of 368*269. Screen raw parameters are derived by
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considering pixel/line zero to be the first period after the end of the
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horizontal/vertical sync pulse.
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*/
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@ -24,55 +34,241 @@ QTY Type position
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#include "emupal.h"
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#include "screen.h"
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#include "speaker.h"
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#include "tilemap.h"
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namespace {
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class subhuntr_state : public driver_device
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{
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public:
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subhuntr_state(const machine_config &mconfig, device_type type, const char *tag)
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subhuntr_state(machine_config const &mconfig, device_type type, char const *tag)
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: driver_device(mconfig, type, tag)
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, m_maincpu(*this, "maincpu")
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, m_screen(*this, "screen")
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, m_pvi1_h5(*this, "pvi1")
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, m_pvi2_l5(*this, "pvi2")
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, m_pvi3_n5(*this, "pvi3")
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, m_gfx(*this, "gfxdecode")
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, m_txtram(*this, "txtram")
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, m_intreq_cnf(*this, "JMP_1_7")
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{
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}
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void subhuntr(machine_config &config);
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protected:
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enum { TIMER_VIDEO };
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virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
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virtual void machine_start() override;
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virtual void machine_reset() override;
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virtual void video_start() override;
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private:
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INTERRUPT_GEN_MEMBER(subhuntr_interrupt);
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void txtram_w(offs_t offset, u8 data);
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u8 intack_r();
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void subhuntr_palette(palette_device &palette) const;
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uint32_t screen_update_subhuntr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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DECLARE_WRITE_LINE_MEMBER(pvi1_intreq_w);
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DECLARE_WRITE_LINE_MEMBER(pvi2_intreq_w);
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DECLARE_WRITE_LINE_MEMBER(pvi3_intreq_w);
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void palette_init(palette_device &palette) const;
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u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, rectangle const &cliprect);
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TILE_GET_INFO_MEMBER(tile_info);
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TIMER_CALLBACK_MEMBER(video_callback);
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void set_intreq(unsigned bit, u8 mask);
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void clr_intreq(unsigned bit);
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void subhuntr_data_map(address_map &map);
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void subhuntr_io_map(address_map &map);
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void subhuntr_map(address_map &map);
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required_device<s2650_device> m_maincpu;
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required_device<s2650_device> m_maincpu;
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required_device<screen_device> m_screen;
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required_device<s2636_device> m_pvi1_h5;
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required_device<s2636_device> m_pvi2_l5;
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required_device<s2636_device> m_pvi3_n5;
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required_device<gfxdecode_device> m_gfx;
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required_shared_ptr<u8> m_txtram;
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required_ioport m_intreq_cnf;
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u8 m_intreqs = 0;
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bitmap_ind16 m_bitmap;
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emu_timer *m_video_timer = nullptr;
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tilemap_t *m_tilemap = nullptr;
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};
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/***************************************************************************
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Video
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Machine implementation
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***************************************************************************/
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void subhuntr_state::subhuntr_palette(palette_device &palette) const
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void subhuntr_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
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{
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switch (id)
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{
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case TIMER_VIDEO:
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video_callback(ptr, param);
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break;
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default:
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throw emu_fatalerror("Unknown id in subhuntr_state::device_timer");
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}
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}
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void subhuntr_state::machine_start()
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{
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m_video_timer = timer_alloc(TIMER_VIDEO);
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m_tilemap = &machine().tilemap().create(*m_gfx, tilemap_get_info_delegate(*this, FUNC(subhuntr_state::tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 32, 8);
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m_tilemap->set_transparent_pen(0);
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save_item(NAME(m_intreqs));
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m_screen->register_screen_bitmap(m_bitmap);
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m_video_timer->adjust(m_screen->time_until_pos(1, 0));
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}
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void subhuntr_state::machine_reset()
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{
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}
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uint32_t subhuntr_state::screen_update_subhuntr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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void subhuntr_state::txtram_w(offs_t offset, u8 data)
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{
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if (m_txtram[offset] != data)
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{
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m_txtram[offset] = data;
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m_tilemap->mark_tile_dirty(offset);
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}
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}
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u8 subhuntr_state::intack_r()
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{
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unsigned const source = count_leading_zeros(m_intreqs) - 24;
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u8 const vector = ((m_intreq_cnf->read() & 0x01) ? 0x91 : 0x11) | (source << 1);
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switch (source)
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{
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case 1:
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m_pvi1_h5->write_intack(ASSERT_LINE);
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m_pvi1_h5->write_intack(CLEAR_LINE);
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break;
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case 2:
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m_pvi2_l5->write_intack(ASSERT_LINE);
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m_pvi2_l5->write_intack(CLEAR_LINE);
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break;
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case 4:
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m_pvi3_n5->write_intack(ASSERT_LINE);
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m_pvi3_n5->write_intack(CLEAR_LINE);
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break;
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case 3:
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case 5:
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case 6:
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clr_intreq(7 - source);
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break;
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}
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return vector;
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}
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WRITE_LINE_MEMBER(subhuntr_state::pvi1_intreq_w)
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{
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if (state) set_intreq(6, 0x02);
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else clr_intreq(6);
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}
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WRITE_LINE_MEMBER(subhuntr_state::pvi2_intreq_w)
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{
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if (state) set_intreq(5, 0x04);
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else clr_intreq(5);
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}
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WRITE_LINE_MEMBER(subhuntr_state::pvi3_intreq_w)
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{
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if (state) set_intreq(3, 0x08);
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else clr_intreq(3);
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}
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void subhuntr_state::palette_init(palette_device &palette) const
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{
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palette.set_pen_color(0, 0x00, 0x00, 0x00);
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palette.set_pen_color(1, 0x00, 0xff, 0x00);
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palette.set_pen_color(2, 0x00, 0x00, 0x00);
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palette.set_pen_color(3, 0x00, 0xff, 0xff);
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palette.set_pen_color(4, 0x00, 0x00, 0x00);
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palette.set_pen_color(5, 0xff, 0xff, 0x00);
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palette.set_pen_color(6, 0x00, 0x00, 0x00);
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palette.set_pen_color(7, 0xff, 0xff, 0xff);
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}
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u32 subhuntr_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, rectangle const &cliprect)
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{
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copybitmap(bitmap, m_bitmap, 0, 0, 0, 0, cliprect);
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return 0;
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}
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void subhuntr_state::video_start()
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TILE_GET_INFO_MEMBER(subhuntr_state::tile_info)
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{
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u8 const tile = m_txtram[tile_index];
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u8 const code = tile & 0x3f;
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u8 const colour = (tile >> 6) & 0x03;
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tileinfo.set(0, code, colour, 0);
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}
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TIMER_CALLBACK_MEMBER(subhuntr_state::video_callback)
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{
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int const y = m_screen->vpos();
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if (!y)
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{
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m_pvi1_h5->render_first_line();
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m_pvi2_l5->render_first_line();
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m_pvi3_n5->render_first_line();
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}
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else
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{
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m_pvi1_h5->render_next_line();
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m_pvi2_l5->render_next_line();
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m_pvi3_n5->render_next_line();
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}
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u16 const *src1 = &m_pvi1_h5->bitmap().pix(y);
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u16 const *src2 = &m_pvi2_l5->bitmap().pix(y);
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u16 const *src3 = &m_pvi3_n5->bitmap().pix(y);
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u16 *dst = &m_bitmap.pix(y);
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for (unsigned x = 0; x < m_bitmap.width(); x++, src1++, src2++, src3++, dst++)
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{
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u16 const pvi_val = S2636_PIXEL_COLOR(*src1 | *src2 | *src3);
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*dst = pvi_val;
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if (S2636_IS_PIXEL_DRAWN(*src1) && S2636_IS_PIXEL_DRAWN(*src2)) set_intreq(4, 0x10);
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if (S2636_IS_PIXEL_DRAWN(*src1) && S2636_IS_PIXEL_DRAWN(*src3)) set_intreq(2, 0x20);
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if (S2636_IS_PIXEL_DRAWN(*src2) && S2636_IS_PIXEL_DRAWN(*src3)) set_intreq(1, 0x40);
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}
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m_video_timer->adjust(m_screen->time_until_pos(y + 1, 0));
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}
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void subhuntr_state::set_intreq(unsigned bit, u8 mask)
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{
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u8 const shifted = ((m_intreq_cnf->read() & mask) ? 1U : 0U) << bit;
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if (shifted & ~m_intreqs)
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{
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if (!m_intreqs)
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m_maincpu->set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE);
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m_intreqs |= shifted;
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}
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}
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void subhuntr_state::clr_intreq(unsigned bit)
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{
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u8 const shifted = 1U << bit;
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if (shifted & m_intreqs)
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{
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m_intreqs &= ~shifted;
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if (!m_intreqs)
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m_maincpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE);
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}
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}
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@ -84,19 +280,21 @@ void subhuntr_state::video_start()
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void subhuntr_state::subhuntr_map(address_map &map)
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{
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map.global_mask(0x1fff);
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map.unmap_value_high();
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map(0x0000, 0x0fff).rom();
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map(0x1c00, 0x1fff).ram();
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map(0x1000, 0x10ff).mirror(0x0100).ram(); // G8/G9
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map(0x1200, 0x12ff).mirror(0x0100).ram(); // H8/H9
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map(0x1400, 0x14ff).mirror(0x0100).ram(); // L8/L9
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map(0x1600, 0x16ff).mirror(0x0100).ram(); // M8/M9
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map(0x1800, 0x18ff).mirror(0x0100).w(FUNC(subhuntr_state::txtram_w)).share(m_txtram); // B4/C4
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map(0x1b00, 0x1bff).rw(m_pvi3_n5, FUNC(s2636_device::read_data), FUNC(s2636_device::write_data));
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map(0x1d00, 0x1dff).rw(m_pvi2_l5, FUNC(s2636_device::read_data), FUNC(s2636_device::write_data));
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// Some kind of I/O at 1e00-1eff (enabled by PVI1 CE2)
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map(0x1f00, 0x1fff).rw(m_pvi1_h5, FUNC(s2636_device::read_data), FUNC(s2636_device::write_data));
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}
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void subhuntr_state::subhuntr_io_map(address_map &map)
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{
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}
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void subhuntr_state::subhuntr_data_map(address_map &map)
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{
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// map(S2650_CTRL_PORT, S2650_CTRL_PORT).rw(FUNC(subhuntr_state::), FUNC(subhuntr_state::));
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// map(S2650_DATA_PORT, S2650_DATA_PORT).rw(FUNC(subhuntr_state::), FUNC(subhuntr_state::));
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}
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/***************************************************************************
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@ -105,6 +303,31 @@ void subhuntr_state::subhuntr_data_map(address_map &map)
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***************************************************************************/
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static INPUT_PORTS_START( subhuntr )
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// Factory jumpers controlling interrupt masking
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PORT_START("JMP_1_7")
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PORT_CONFNAME(0x01, 0x00, "JMP1") // interrupt vector MSB select (indirect bit)
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PORT_CONFSETTING(0x00, DEF_STR(Off))
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PORT_CONFSETTING(0x01, DEF_STR(On))
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PORT_CONFNAME(0x02, 0x02, "JMP2") // PVI1 VBLANK/completion interrupt enable
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PORT_CONFSETTING(0x00, DEF_STR(Off))
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PORT_CONFSETTING(0x02, DEF_STR(On))
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PORT_CONFNAME(0x04, 0x04, "JMP3") // PVI2 VBLANK/completion interrupt enable
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PORT_CONFSETTING(0x00, DEF_STR(Off))
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PORT_CONFSETTING(0x04, DEF_STR(On))
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PORT_CONFNAME(0x08, 0x08, "JMP4") // PVI3 VBLANK/completion interrupt enable
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PORT_CONFSETTING(0x00, DEF_STR(Off))
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PORT_CONFSETTING(0x08, DEF_STR(On))
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PORT_CONFNAME(0x10, 0x10, "JMP5") // PVI1/PVI2 collision interrupt enable
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PORT_CONFSETTING(0x00, DEF_STR(Off))
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PORT_CONFSETTING(0x10, DEF_STR(On))
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PORT_CONFNAME(0x20, 0x20, "JMP6") // PVI1/PVI3 collision interrupt enable
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PORT_CONFSETTING(0x00, DEF_STR(Off))
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PORT_CONFSETTING(0x20, DEF_STR(On))
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PORT_CONFNAME(0x40, 0x40, "JMP7") // PVI2/PVI3 collision interrupt enable
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PORT_CONFSETTING(0x00, DEF_STR(Off));
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PORT_CONFSETTING(0x40, DEF_STR(On));
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INPUT_PORTS_END
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@ -114,67 +337,52 @@ INPUT_PORTS_END
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***************************************************************************/
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void subhuntr_state::machine_start()
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{
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}
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void subhuntr_state::machine_reset()
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{
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}
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INTERRUPT_GEN_MEMBER(subhuntr_state::subhuntr_interrupt)
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{
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m_maincpu->set_input_line(0, ASSERT_LINE);
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}
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static const gfx_layout tiles8x8_layout =
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{
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8,8,
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RGN_FRAC(1,1),
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1,
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{ 0 },
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{ 0, 1, 2, 3, 4, 5, 6, 7 },
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{ 7, 6, 5, 4, 3, 2, 1, 0 },
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{ 0*8,1*8,2*8,3*8,4*8,5*8,6*8,7*8 },
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8*8
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};
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static GFXDECODE_START( gfx_subhuntr )
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GFXDECODE_ENTRY( "gfx1", 0, tiles8x8_layout, 0, 1 )
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GFXDECODE_ENTRY("gfx1", 0, tiles8x8_layout, 0, 4)
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GFXDECODE_END
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void subhuntr_state::subhuntr(machine_config &config)
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{
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/* basic machine hardware */
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S2650(config, m_maincpu, 14318180/4/2);
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S2650(config, m_maincpu, 3.579545_MHz_XTAL/2);
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m_maincpu->set_addrmap(AS_PROGRAM, &subhuntr_state::subhuntr_map);
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m_maincpu->set_addrmap(AS_IO, &subhuntr_state::subhuntr_io_map);
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m_maincpu->set_addrmap(AS_DATA, &subhuntr_state::subhuntr_data_map);
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m_maincpu->set_vblank_int("screen", FUNC(subhuntr_state::subhuntr_interrupt));
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m_maincpu->sense_handler().set("screen", FUNC(screen_device::vblank));
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m_maincpu->intack_handler().set([this]() { m_maincpu->set_input_line(0, CLEAR_LINE); return 0x03; });
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m_maincpu->sense_handler().set(m_screen, FUNC(screen_device::vblank));
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m_maincpu->intack_handler().set(FUNC(subhuntr_state::intack_r));
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//s2636_device &s2636(S2636(config, "s2636", 0));
|
||||
//s2636.set_offsets(3, -21);
|
||||
//s2636.add_route(ALL_OUTPUTS, "mono", 0.10);
|
||||
S2636(config, m_pvi1_h5, 3.579545_MHz_XTAL);
|
||||
m_pvi1_h5->set_divider(2);
|
||||
m_pvi1_h5->intreq_cb().set(FUNC(subhuntr_state::pvi1_intreq_w));
|
||||
|
||||
/* video hardware */
|
||||
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
|
||||
screen.set_video_attributes(VIDEO_ALWAYS_UPDATE);
|
||||
screen.set_refresh_hz(50);
|
||||
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
|
||||
screen.set_size(256, 256);
|
||||
screen.set_visarea(1*8, 29*8-1, 2*8, 32*8-1);
|
||||
screen.set_screen_update(FUNC(subhuntr_state::screen_update_subhuntr));
|
||||
screen.set_palette("palette");
|
||||
S2636(config, m_pvi2_l5, 3.579545_MHz_XTAL);
|
||||
m_pvi2_l5->set_divider(2);
|
||||
m_pvi2_l5->intreq_cb().set(FUNC(subhuntr_state::pvi2_intreq_w));
|
||||
|
||||
GFXDECODE(config, "gfxdecode", "palette", gfx_subhuntr);
|
||||
PALETTE(config, "palette", FUNC(subhuntr_state::subhuntr_palette), 26);
|
||||
S2636(config, m_pvi3_n5, 3.579545_MHz_XTAL);
|
||||
m_pvi3_n5->set_divider(2);
|
||||
m_pvi3_n5->intreq_cb().set(FUNC(subhuntr_state::pvi3_intreq_w));
|
||||
|
||||
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
|
||||
m_screen->set_raw(3.579545_MHz_XTAL*2, 227*2, 21*2, 205*2, 312, 29, 298);
|
||||
m_screen->set_palette("palette");
|
||||
m_screen->set_screen_update(FUNC(subhuntr_state::screen_update));
|
||||
|
||||
GFXDECODE(config, m_gfx, "txtpal", gfx_subhuntr);
|
||||
|
||||
PALETTE(config, "palette", palette_device::RGB_3BIT);
|
||||
PALETTE(config, "txtpal", FUNC(subhuntr_state::palette_init), 8);
|
||||
|
||||
/* sound hardware */
|
||||
SPEAKER(config, "mono").front_center();
|
||||
|
||||
/* discrete sound */
|
||||
}
|
||||
|
||||
|
||||
@ -183,13 +391,15 @@ void subhuntr_state::subhuntr(machine_config &config)
|
||||
|
||||
ROM_START( subhuntr )
|
||||
ROM_REGION( 0x1000, "maincpu", 0 )
|
||||
ROM_LOAD( "mr21.6f", 0x0000, 0x0400, CRC(27847939) SHA1(e6b41b511fefac1e1e207eff2dac8c2963d47c5c) )
|
||||
ROM_LOAD( "mr22.6g", 0x0400, 0x0400, CRC(e9af1ee8) SHA1(451e88407a120444377a58b06b65152c57503533) )
|
||||
ROM_LOAD( "mr25.6l", 0x0800, 0x0400, CRC(8271c975) SHA1(c7192658b50d781ab1b94c2e8cb75c5be3539820) )
|
||||
ROM_LOAD( "mr24.6n", 0x0c00, 0x0400, CRC(385c4944) SHA1(84050b0356c9a3a36528dba768f2684e28c6c7c4) )
|
||||
ROM_LOAD( "mr21.f7", 0x0000, 0x0400, CRC(27847939) SHA1(e6b41b511fefac1e1e207eff2dac8c2963d47c5c) )
|
||||
ROM_LOAD( "mr22.g7", 0x0400, 0x0400, CRC(e9af1ee8) SHA1(451e88407a120444377a58b06b65152c57503533) )
|
||||
ROM_LOAD( "mr25.l7", 0x0800, 0x0400, CRC(8271c975) SHA1(c7192658b50d781ab1b94c2e8cb75c5be3539820) )
|
||||
ROM_LOAD( "mr24.n7", 0x0c00, 0x0400, CRC(385c4944) SHA1(84050b0356c9a3a36528dba768f2684e28c6c7c4) )
|
||||
|
||||
ROM_REGION( 0x0200, "gfx1", 0 )
|
||||
ROM_LOAD( "82s115.2b", 0x0000, 0x0200, CRC(6946c9de) SHA1(956b4bebe6960a73609deb75e1493c4127fd7f77) ) // ASCII, not much else
|
||||
ROM_LOAD( "82s115.b2", 0x0000, 0x0200, CRC(6946c9de) SHA1(956b4bebe6960a73609deb75e1493c4127fd7f77) )
|
||||
ROM_END
|
||||
|
||||
} // anonymous namespace
|
||||
|
||||
GAME(1979, subhuntr, 0, subhuntr, subhuntr, subhuntr_state, empty_init, ROT0, "Model Racing", "Sub Hunter (Model Racing)", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )
|
||||
|
||||
Loading…
Reference in New Issue
Block a user