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rgum.cpp: updated notes, it doesn't have an encrypted Z80
This commit is contained in:
Ivan Vangelista
parent
6148f4b297
commit
526720dbd6
@ -4,26 +4,37 @@
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Royal Gum
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Unknown CPU (either Z80 or Z180) - or at least rgum.u47 looks z80 related
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rgum.u5 is for a 6502?
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Main components
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- Big Black Box in the middle of the PCB. Contains the main CPU (some kind of M6502) and maybe the 6845 (not seen anywhere on PCB)
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- 24.000000 Mhz osc
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- 2 x M82C55A
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- AY38910A/P
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- NEC UPD7759
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- MK48Z08B-10
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- 1 8-dip bank
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- 1 4-dip bank
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Big Black Box in the middle of the PCB (for encryption, or containing roms?)
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The ppi at 3000-3003 seems to be a dual port communication thing with the z80.
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TODO:
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- stuck at the play screen with 'attendere' (wait) message;
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- some devices aren't mapped and others may be mapped wrong
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- currently hacked to display something (see ay port A read)
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*/
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#include "emu.h"
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#include "cpu/m6502/m65c02.h"
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#include "cpu/z80/z80.h"
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#include "machine/i8255.h"
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#include "machine/nvram.h"
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#include "sound/ay8910.h"
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#include "sound/upd7759.h"
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#include "video/mc6845.h"
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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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namespace {
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class rgum_state : public driver_device
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{
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public:
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@ -39,37 +50,42 @@ public:
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DECLARE_READ_LINE_MEMBER(heartbeat_r);
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protected:
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virtual void video_start() override;
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private:
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required_shared_ptr<uint8_t> m_vram;
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required_shared_ptr<uint8_t> m_cram;
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uint8_t m_hbeat;
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virtual void video_start() override;
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uint32_t screen_update_royalgum(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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required_device<cpu_device> m_maincpu;
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required_device<gfxdecode_device> m_gfxdecode;
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required_device<palette_device> m_palette;
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void rgum_map(address_map &map);
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uint8_t m_hbeat;
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uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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void main_map(address_map &map);
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};
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void rgum_state::video_start()
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{
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m_hbeat = 0;
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save_item(NAME(m_hbeat));
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}
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uint32_t rgum_state::screen_update_royalgum(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
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uint32_t rgum_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
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{
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int x,y,count;
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gfx_element *gfx = m_gfxdecode->gfx(0);
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count = 0;
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int count = 0;
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for(y=0;y<32;y++)
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for (int y = 0; y < 32; y++)
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{
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for(x=0;x<66;x++)
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for (int x = 0;x < 66; x++)
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{
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int tile = m_vram[count] | ((m_cram[count] & 0xf) <<8);
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int tile = m_vram[count] | ((m_cram[count] & 0xf) << 8);
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gfx->opaque(bitmap,cliprect,tile,0,0,0,x*8,y*8);
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gfx->opaque(bitmap, cliprect, tile, 0, 0, 0, x * 8, y * 8);
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count++;
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}
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@ -78,9 +94,9 @@ uint32_t rgum_state::screen_update_royalgum(screen_device &screen, bitmap_rgb32
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return 0;
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}
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void rgum_state::rgum_map(address_map &map)
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void rgum_state::main_map(address_map &map) // TODO: map MK48Z08B-10, second 8255, UPD7759
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{
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map(0x0000, 0x07ff).ram(); //not all of it?
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map(0x0000, 0x07ff).ram(); // not all of it?
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map(0x0800, 0x0800).w("crtc", FUNC(mc6845_device::address_w));
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map(0x0801, 0x0801).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
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@ -88,13 +104,16 @@ void rgum_state::rgum_map(address_map &map)
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map(0x2000, 0x2000).w("aysnd", FUNC(ay8910_device::data_w));
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map(0x2002, 0x2002).rw("aysnd", FUNC(ay8910_device::data_r), FUNC(ay8910_device::address_w));
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map(0x2801, 0x2801).nopr(); //read but value discarded?
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map(0x2801, 0x2801).nopr(); // read but value discarded?
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map(0x2802, 0x2802).nopr();
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map(0x2803, 0x2803).nopr();
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map(0x3000, 0x3003).rw("ppi8255", FUNC(i8255_device::read), FUNC(i8255_device::write));
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// map(0x2c00, 0x2c03).w(); // ?
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map(0x4000, 0x47ff).ram().share("vram");
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map(0x5000, 0x57ff).ram().share("cram");
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map(0x3000, 0x3003).rw("ppi8255_0", FUNC(i8255_device::read), FUNC(i8255_device::write));
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map(0x4000, 0x47ff).ram().share(m_vram);
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map(0x5000, 0x57ff).ram().share(m_cram);
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map(0x8000, 0xffff).rom();
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}
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@ -172,8 +191,21 @@ static INPUT_PORTS_START( rgum )
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PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNKNOWN ) //communication port with the z80?
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PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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// TODO: should be 1 8-dip bank and 1 4-dip bank
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PORT_START("DSW1")
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PORT_DIPNAME( 0x01, 0x01, "DSW1" )
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PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
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@ -181,7 +213,7 @@ static INPUT_PORTS_START( rgum )
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PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
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PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) // changes some words from Italian to French and back
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PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
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@ -213,7 +245,7 @@ static INPUT_PORTS_START( rgum )
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PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
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PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) // SW2 dip 1
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PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
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@ -241,64 +273,81 @@ static const gfx_layout tiles8x8_layout =
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};
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static GFXDECODE_START( gfx_rgum )
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GFXDECODE_ENTRY( "gfx1", 0, tiles8x8_layout, 0, 16 )
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GFXDECODE_ENTRY( "tiles", 0, tiles8x8_layout, 0, 16 )
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GFXDECODE_END
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void rgum_state::rgum(machine_config &config)
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{
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/* basic machine hardware */
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M65C02(config, m_maincpu, 24000000/16); /* ? MHz */
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m_maincpu->set_addrmap(AS_PROGRAM, &rgum_state::rgum_map);
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// basic machine hardware
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M65C02(config, m_maincpu, 24_MHz_XTAL / 16); // divisor not verified
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m_maincpu->set_addrmap(AS_PROGRAM, &rgum_state::main_map);
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/* video hardware */
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// NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // MK48Z08
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i8255_device &ppi(I8255A(config, "ppi8255_0"));
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ppi.in_pa_callback().set_ioport("IN0");
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ppi.in_pb_callback().set_ioport("DSW1");
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ppi.in_pc_callback().set_ioport("DSW2");
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I8255A(config, "ppi8255_1");
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// video hardware
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screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
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screen.set_refresh_hz(60);
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screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
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screen.set_size(256, 256);
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screen.set_visarea(0, 256-1, 0, 256-1);
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screen.set_screen_update(FUNC(rgum_state::screen_update_royalgum));
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screen.set_screen_update(FUNC(rgum_state::screen_update));
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mc6845_device &crtc(MC6845(config, "crtc", 24000000/16)); /* unknown clock & type, hand tuned to get ~50 fps (?) */
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mc6845_device &crtc(MC6845(config, "crtc", 24_MHz_XTAL / 16)); // unknown clock & type, hand tuned to get ~50 fps (?)
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crtc.set_screen("screen");
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crtc.set_show_border_area(false);
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crtc.set_char_width(8);
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crtc.out_vsync_callback().set_inputline(m_maincpu, INPUT_LINE_NMI);
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i8255_device &ppi(I8255A(config, "ppi8255"));
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ppi.in_pa_callback().set_ioport("IN0");
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ppi.in_pb_callback().set_ioport("IN1");
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ppi.in_pc_callback().set_ioport("IN2");
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GFXDECODE(config, m_gfxdecode, m_palette, gfx_rgum);
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PALETTE(config, m_palette).set_entries(0x100);
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SPEAKER(config, "mono").front_center();
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AY8910(config, "aysnd", 24000000/16).add_route(ALL_OUTPUTS, "mono", 0.50); /* guessed to use the same xtal as the crtc */
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ay8910_device &aysnd(AY8910(config, "aysnd", 24_MHz_XTAL / 16));
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aysnd.add_route(ALL_OUTPUTS, "mono", 0.50); // guessed to use the same xtal as the crtc
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aysnd.port_a_read_callback().set([this](){ return machine().rand() & 0x01; }); // TODO: hack! Otherwise it flashes 'RAM ERROR 0', then black screen
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aysnd.port_b_read_callback().set([this](){ return 0x00; }); // 'micro palline err.' (microballs err.) if bit 0 is set
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UPD7759(config, "upd").add_route(ALL_OUTPUTS, "mono", 0.50);
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}
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ROM_START( rgum )
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ROM_REGION( 0x20000, "z80cpu", 0 )
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ROM_LOAD( "rgum.u47", 0x00000, 0x20000, CRC(fe410eb9) SHA1(25180ba336269279f251be5483c210a581d27197) ) // encrypted.. 2nd half empty
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ROM_START( rgum ) // PCB SL65 V2
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ROM_REGION( 0x10000, "maincpu", 0 )
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ROM_LOAD( "rgum.u5", 0x00000, 0x10000, CRC(9d2d1681) SHA1(1c1da0d970ea2cf58f7961417ab6986cc667da5c) ) // plaintext in here, but firt half is empty
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ROM_LOAD( "rgum.u5", 0x00000, 0x10000, CRC(9d2d1681) SHA1(1c1da0d970ea2cf58f7961417ab6986cc667da5c) ) // first half is empty
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ROM_REGION( 0x10000, "unk", 0 )
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ROM_LOAD( "rgum.u6", 0x00000, 0x2000, CRC(15a34117) SHA1(c7e0aef4007abfaaa533feb026148ba03230b79f) ) // near the data rom, mostly empty
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ROM_REGION( 0x2000, "nvram", 0 ) // MK48Z08B-10
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ROM_LOAD( "rgum.u6", 0x0000, 0x2000, CRC(15a34117) SHA1(c7e0aef4007abfaaa533feb026148ba03230b79f) ) // near the data ROM, mostly empty
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ROM_REGION( 0x18000, "gfx1", 0 )
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ROM_REGION( 0x18000, "tiles", 0 )
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ROM_LOAD( "rgum.u16", 0x00000, 0x8000, CRC(2a2c8d78) SHA1(2ce335b900dccbc34ad8ae7ae02ec7c75ffcd559) ) // first half empty
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ROM_CONTINUE(0x00000,0x8000)
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ROM_LOAD( "rgum.u17", 0x08000, 0x8000, CRC(fae4e41a) SHA1(421aac2b567040c3a56e01aa70880c94450eaf76) ) // first half empty
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ROM_CONTINUE(0x08000,0x8000)
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ROM_LOAD( "rgum.u18", 0x10000, 0x8000, CRC(79b17da7) SHA1(31e1845261b0152df56135c212e55c4048b7496f) ) // first half empty
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ROM_CONTINUE(0x10000,0x8000)
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ROM_REGION( 0x20000, "upd", 0 )
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ROM_LOAD( "rgum.u47", 0x00000, 0x20000, CRC(fe410eb9) SHA1(25180ba336269279f251be5483c210a581d27197) ) // 2nd half empty, almost identical to the one of ladygum in videosaa.cpp
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ROM_REGION( 0x200, "proms", 0 )
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ROM_LOAD( "n82s147n", 0x000, 0x200, NO_DUMP )
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ROM_REGION( 0x200, "plds", 0 )
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ROM_LOAD( "gal16v8b-25lp", 0x000, 0x117, NO_DUMP )
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ROM_END
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} // Anonymous namespace
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GAME( 199?, rgum, 0, rgum, rgum, rgum_state, empty_init, ROT0, "<unknown>", "Royal Gum (Italy)", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )
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