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Diffstat (limited to 'src/mess/drivers/gamate.c')
-rw-r--r--src/mess/drivers/gamate.c214
1 files changed, 110 insertions, 104 deletions
diff --git a/src/mess/drivers/gamate.c b/src/mess/drivers/gamate.c
index 57101df8b0b..f4e3b7ab84a 100644
--- a/src/mess/drivers/gamate.c
+++ b/src/mess/drivers/gamate.c
@@ -3,7 +3,11 @@
Peter Wilhelmsen peter.wilhelmsen@gmail.com
Morten Shearman Kirkegaard morten+gamate@afdelingp.dk
Juan F??lix Mateos vectrex@hackermesh.org
-******************************************************************************/
+
+ nmi unknown
+ cube up audio sometimes missing
+ bomb blast top status line missing
+ ******************************************************************************/
#include "emu.h"
#include "cpu/m6502/m6502.h"
@@ -36,6 +40,7 @@ public:
DECLARE_WRITE8_MEMBER(cart_bankswitch_w);
DECLARE_READ8_MEMBER(gamate_video_r);
DECLARE_READ8_MEMBER(gamate_pad_r);
+ DECLARE_READ8_MEMBER(gamate_nmi_r);
DECLARE_WRITE8_MEMBER(gamate_video_w);
DECLARE_READ8_MEMBER(gamate_audio_r);
DECLARE_WRITE8_MEMBER(gamate_audio_w);
@@ -51,25 +56,24 @@ private:
struct
{
- UINT8 reg[8];
- struct {
- bool write;
- bool page2; // else page1
+ UINT8 reg[8];
+ struct {
+ bool page2; // else page1
UINT8 ypos, xpos/*tennis*/;
- UINT8 data[2][0x100][0x20];
- } bitmap;
- UINT8 x, y;
+ UINT8 data[2][0x100][0x20];
+ } bitmap;
+ UINT8 x, y;
bool y_increment;
} video;
struct {
- bool set;
+ bool set;
int bit_shifter;
UINT8 cartridge_byte;
UINT16 address; // in reality something more like short local cartridge address offset
bool unprotected;
bool failed;
-
+
} card_protection;
required_device<cpu_device> m_maincpu;
@@ -80,13 +84,13 @@ private:
required_shared_ptr<UINT8> m_bios;
emu_timer *timer1;
emu_timer *timer2;
- UINT8 bank_multi;
+ UINT8 bank_multi;
};
WRITE8_MEMBER( gamate_state::gamate_cart_protection_w )
{
- logerror("%.6f protection write %x %x address:%x data:%x shift:%d\n",machine().time().as_double(), offset, data, card_protection.address, card_protection.cartridge_byte, card_protection.bit_shifter);
-
+ logerror("%.6f protection write %x %x address:%x data:%x shift:%d\n",machine().time().as_double(), offset, data, card_protection.address, card_protection.cartridge_byte, card_protection.bit_shifter);
+
switch (offset) {
case 0:
card_protection.failed= card_protection.failed || ((card_protection.cartridge_byte&0x80)!=0) != ((data&4)!=0);
@@ -100,10 +104,11 @@ WRITE8_MEMBER( gamate_state::gamate_cart_protection_w )
}
READ8_MEMBER( gamate_state::gamate_cart_protection_r )
{
- UINT8 ret=1;
- if (card_protection.bit_shifter==7 && card_protection.unprotected) {
- ret=m_cart->get_rom_base()[bank_multi*0x4000];
- } else {
+
+ UINT8 ret=1;
+ if (card_protection.bit_shifter==7 && card_protection.unprotected) {
+ ret=m_cart->get_rom_base()[bank_multi*0x4000];
+ } else {
card_protection.bit_shifter++;
if (card_protection.bit_shifter==8) {
card_protection.bit_shifter=0;
@@ -112,66 +117,59 @@ READ8_MEMBER( gamate_state::gamate_cart_protection_r )
}
ret=(card_protection.cartridge_byte&0x80)?2:0;
if (card_protection.bit_shifter==7 && !card_protection.failed) { // now protection chip on cartridge activates cartridge chip select on cpu accesses
-// m_maincpu->space(AS_PROGRAM).install_read_handler(0x6000, 0x6000, READ8_DELEGATE(gamate_state, gamate_cart_protection_r)); // next time I will try to get this working
+// m_maincpu->space(AS_PROGRAM).install_read_handler(0x6000, 0x6000, READ8_DELEGATE(gamate_state, gamate_cart_protection_r)); // next time I will try to get this working
}
card_protection.cartridge_byte<<=1;
- }
- logerror("%.6f protection read %x %x address:%x data:%x shift:%d\n",machine().time().as_double(), offset, ret, card_protection.address, card_protection.cartridge_byte, card_protection.bit_shifter);
- return ret;
+ }
+ logerror("%.6f protection read %x %x address:%x data:%x shift:%d\n",machine().time().as_double(), offset, ret, card_protection.address, card_protection.cartridge_byte, card_protection.bit_shifter);
+ return ret;
}
READ8_MEMBER( gamate_state::protection_r ) { return card_protection.set? 3: 1; } // bits 0 and 1 checked
WRITE8_MEMBER( gamate_state::protection_reset )
{
- // writes 0x20
- card_protection.address=0x6005-0x6001;
- card_protection.bit_shifter=0;
- card_protection.cartridge_byte=m_cart->get_rom_base()[card_protection.address++];//m_cart_rom[card_protection.address++];
- card_protection.failed=false;
- card_protection.unprotected=false;
+ // writes 0x20
+ card_protection.address=0x6005-0x6001;
+ card_protection.bit_shifter=0;
+ card_protection.cartridge_byte=m_cart->get_rom_base()[card_protection.address++];//m_cart_rom[card_protection.address++];
+ card_protection.failed=false;
+ card_protection.unprotected=false;
}
READ8_MEMBER( gamate_state::newer_protection_set )
{
- card_protection.set=true;
- return 0;
+ card_protection.set=true;
+ return 0;
}
WRITE8_MEMBER( gamate_state::gamate_video_w )
{
- video.reg[offset]=data;
- switch (offset) {
- case 1:
- if (data&0xf) printf("lcd mode %x\n", data);
- video.bitmap.write=data&0xc0; // more addressing mode
- video.y_increment=data&0x40;
- break;
- case 2: video.bitmap.xpos=data;break;
- case 3:
- if (data>=200) printf("lcd ypos: %x\n", data);
- video.bitmap.ypos=data;
- break;
- case 4: video.bitmap.page2=data&0x80;video.x=data&0x7f;break;
- case 5: video.y=data;break;
- case 7:
- if (video.y>=200)
- machine().ui().popup_time(2, "bitmap write to x:%x y:%x mode:%x data:%x\n", video.x, video.y, video.reg[1], data);
- if (video.bitmap.write) {
- video.bitmap.data[video.bitmap.page2][video.y][video.x]=data;
- } else {
- video.bitmap.data[0][video.y][video.x&(ARRAY_LENGTH(video.bitmap.data[0][0])-1)]=data;
- }
- if (video.y_increment) video.y++;
- else video.x++;
- }
+ video.reg[offset]=data;
+ switch (offset) {
+ case 1:
+ if (data&0xf) printf("lcd mode %x\n", data);
+ video.y_increment=data&0x40;
+ break;
+ case 2: video.bitmap.xpos=data;break;
+ case 3:
+ if (data>=200) printf("lcd ypos: %x\n", data);
+ video.bitmap.ypos=data;
+ break;
+ case 4: video.bitmap.page2=data&0x80;video.x=data&0x1f;break;
+ case 5: video.y=data;break;
+ case 7:
+ video.bitmap.data[video.bitmap.page2][video.y][video.x&(ARRAY_LENGTH(video.bitmap.data[0][0])-1)]=data;
+ if (video.y_increment) video.y++;
+ else video.x++; // overruns
+ }
}
WRITE8_MEMBER( gamate_state::cart_bankswitchmulti_w )
{
- bank_multi=data;
- membank("bankmulti")->set_base(m_cart->get_rom_base()+0x4000*data+1);
+ bank_multi=data;
+ membank("bankmulti")->set_base(m_cart->get_rom_base()+0x4000*data+1);
}
WRITE8_MEMBER( gamate_state::cart_bankswitch_w )
@@ -181,55 +179,61 @@ WRITE8_MEMBER( gamate_state::cart_bankswitch_w )
READ8_MEMBER( gamate_state::gamate_video_r )
{
- if (offset!=6) return 0;
- UINT8 data=0;
- if (video.bitmap.write) {
- data=video.bitmap.data[video.bitmap.page2][video.y][video.x];
- } else {
- data=video.bitmap.data[0][video.y][video.x&(ARRAY_LENGTH(video.bitmap.data[0][0])-1)];
- }
+ if (offset!=6) return 0;
+ UINT8 data=0;
+ data=video.bitmap.data[video.bitmap.page2][video.y][video.x&(ARRAY_LENGTH(video.bitmap.data[0][0])-1)];
// if (m_maincpu->pc()<0xf000)
// machine().ui().popup_time(2, "lcd read x:%x y:%x mode:%x data:%x\n", video.x, video.y, video.reg[1], data);
- return data;
+ if (video.y_increment) video.y++;
+ else video.x++; // overruns?
+
+ return data;
}
WRITE8_MEMBER( gamate_state::gamate_audio_w )
{
// printf("audio write %x:%x\n", offset, data);//logerror("%.6f %04x audio write %04x %02x\n",machine().time().as_double(),m_maincpu->pc(),offset,data);
- m_sound->device_w(space, offset, data);
+ m_sound->device_w(space, offset, data);
}
READ8_MEMBER( gamate_state::gamate_audio_r )
{
-// legend of dragon knight
-// machine().ui().popup_time(2, "%.6f %04x audio read %04x \n",machine().time().as_double(),m_maincpu->pc(),offset);
- return 0;
+ UINT8 data=m_sound->device_r(space, offset);
+ return data;
}
READ8_MEMBER( gamate_state::gamate_pad_r )
{
- UINT8 data=m_io_joy->read();
- return data;
+ UINT8 data=m_io_joy->read();
+ return data;
}
-static ADDRESS_MAP_START( gamate_mem, AS_PROGRAM, 8, gamate_state )
- AM_RANGE(0x0000, 0x03ff) AM_RAM
- AM_RANGE(0x4000, 0x400d) AM_READWRITE(gamate_audio_r, gamate_audio_w)
- AM_RANGE(0x4400, 0x4400) AM_READ(gamate_pad_r)
- AM_RANGE(0x5000, 0x5007) AM_READWRITE(gamate_video_r, gamate_video_w)
- AM_RANGE(0x5800, 0x5800) AM_READ(newer_protection_set)
- AM_RANGE(0x5900, 0x5900) AM_WRITE(protection_reset)
- AM_RANGE(0x5a00, 0x5a00) AM_READ(protection_r)
+READ8_MEMBER( gamate_state::gamate_nmi_r )
+{
+ UINT8 data=0;
+ machine().ui().popup_time(2, "nmi/4800 read\n");
+ return data;
+}
- AM_RANGE(0x6001, 0x9fff) AM_READ_BANK("bankmulti")
- AM_RANGE(0xa000, 0xdfff) AM_READ_BANK("bank")
+static ADDRESS_MAP_START( gamate_mem, AS_PROGRAM, 8, gamate_state )
+ AM_RANGE(0x0000, 0x03ff) AM_RAM
+ AM_RANGE(0x4000, 0x400d) AM_READWRITE(gamate_audio_r, gamate_audio_w)
+ AM_RANGE(0x4400, 0x4400) AM_READ(gamate_pad_r)
+ AM_RANGE(0x4800, 0x4800) AM_READ(gamate_nmi_r)
+ AM_RANGE(0x5000, 0x5007) AM_READWRITE(gamate_video_r, gamate_video_w)
+ AM_RANGE(0x5800, 0x5800) AM_READ(newer_protection_set)
+ AM_RANGE(0x5900, 0x5900) AM_WRITE(protection_reset)
+ AM_RANGE(0x5a00, 0x5a00) AM_READ(protection_r)
+
+ AM_RANGE(0x6001, 0x9fff) AM_READ_BANK("bankmulti")
+ AM_RANGE(0xa000, 0xdfff) AM_READ_BANK("bank")
AM_RANGE(0x6000, 0x6000) AM_READWRITE(gamate_cart_protection_r, gamate_cart_protection_w)
AM_RANGE(0x8000, 0x8000) AM_WRITE(cart_bankswitchmulti_w)
AM_RANGE(0xc000, 0xc000) AM_WRITE(cart_bankswitch_w)
- AM_RANGE(0xf000, 0xffff) AM_ROM AM_SHARE("bios")
+ AM_RANGE(0xf000, 0xffff) AM_ROM AM_SHARE("bios")
ADDRESS_MAP_END
@@ -245,7 +249,7 @@ static INPUT_PORTS_START( gamate )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SELECT) PORT_NAME("Select")
INPUT_PORTS_END
-ATTR_UNUSED static const unsigned short gamate_palette[4] =
+static const unsigned short gamate_palette[4] =
{
0,1,2,3
};
@@ -254,10 +258,10 @@ ATTR_UNUSED static const unsigned short gamate_palette[4] =
/* palette in red, green, blue tribles */
static const unsigned char gamate_colors[4][3] =
{
- { 255,255,255 },
- { 0xa0, 0xa0, 0xa0 },
- { 0x60, 0x60, 0x60 },
- { 0, 0, 0 }
+ { 255,255,255 },
+ { 0xa0, 0xa0, 0xa0 },
+ { 0x60, 0x60, 0x60 },
+ { 0, 0, 0 }
};
PALETTE_INIT_MEMBER(gamate_state, gamate)
@@ -280,27 +284,27 @@ static void BlitPlane(UINT16* line, UINT8 plane1, UINT8 plane2)
UINT32 gamate_state::screen_update_gamate(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
- int x, y, j;
- for (y=0;y<152;y++) {
- for (x=-(video.bitmap.xpos&7), j=0;x<160;x+=8, j++) {
- UINT8 d1, d2;
- if (video.bitmap.ypos<200) {
+ int x, y, j;
+ for (y=0;y<152;y++) {
+ for (x=-(video.bitmap.xpos&7), j=0;x<160;x+=8, j++) {
+ UINT8 d1, d2;
+ if (video.bitmap.ypos<200) {
d1=video.bitmap.data[0][(y+video.bitmap.ypos)%200][(j+video.bitmap.xpos/8)&0x1f];
d2=video.bitmap.data[1][(y+video.bitmap.ypos)%200][(j+video.bitmap.xpos/8)&0x1f];
- } else if ((video.bitmap.ypos&0xf)<8) { // lcdtest, of course still some registers not known, my gamate doesn't display bottom lines
+ } else if ((video.bitmap.ypos&0xf)<8) { // lcdtest, of course still some registers not known, my gamate doesn't display bottom lines; most likely problematic 200 warp around hardware! no real usage
int yi=(y+(video.bitmap.ypos&0xf)-8);
if (yi<0) yi=video.bitmap.ypos+y; // in this case only 2nd plane used!?, source of first plane?
d1=video.bitmap.data[0][yi][(j+video.bitmap.xpos/8)&0x1f]; // value of lines bevor 0 chaos
d2=video.bitmap.data[1][yi][(j+video.bitmap.xpos/8)&0x1f];
- } else {
+ } else {
d1=video.bitmap.data[0][y][(j+video.bitmap.xpos/8)&0x1f];
- d2=video.bitmap.data[1][y][(j+video.bitmap.xpos/8)&0x1f];
- }
- BlitPlane(&bitmap.pix16(y, x+4), d1, d2);
- BlitPlane(&bitmap.pix16(y, x), d1>>4, d2>>4);
- }
- }
- return 0;
+ d2=video.bitmap.data[1][y][(j+video.bitmap.xpos/8)&0x1f];
+ }
+ BlitPlane(&bitmap.pix16(y, x+4), d1, d2);
+ BlitPlane(&bitmap.pix16(y, x), d1>>4, d2>>4);
+ }
+ }
+ return 0;
}
DRIVER_INIT_MEMBER(gamate_state,gamate)
@@ -314,11 +318,11 @@ DRIVER_INIT_MEMBER(gamate_state,gamate)
void gamate_state::machine_start()
{
if (m_cart->exists()) {
-// m_maincpu->space(AS_PROGRAM).install_read_handler(0x6000, 0x6000, READ8_DELEGATE(gamate_state, gamate_cart_protection_r));
+// m_maincpu->space(AS_PROGRAM).install_read_handler(0x6000, 0x6000, READ8_DELEGATE(gamate_state, gamate_cart_protection_r));
membank("bankmulti")->set_base(m_cart->get_rom_base()+1);
membank("bank")->set_base(m_cart->get_rom_base()+0x4000); // bankswitched games in reality no offset
}
-// m_bios[0xdf1]=0xea; m_bios[0xdf2]=0xea; // default bios: $47 protection readback
+// m_bios[0xdf1]=0xea; m_bios[0xdf2]=0xea; // default bios: $47 protection readback
card_protection.set=false;
bank_multi=0;
card_protection.unprotected=false;
@@ -378,7 +382,7 @@ static MACHINE_CONFIG_START( gamate, gamate_state )
MCFG_SOUND_ADD("custom", GAMATE_SND, 0)
MCFG_SOUND_ROUTE(0, "lspeaker", 0.50)
MCFG_SOUND_ROUTE(1, "rspeaker", 0.50)
-
+
MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_linear_slot, "gamate_cart")
MCFG_GENERIC_MANDATORY
@@ -396,4 +400,6 @@ ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME */
-CONS( 19??, gamate, 0, 0, gamate, gamate, gamate_state, gamate, "Bit Corp", "Gamate", GAME_IMPERFECT_SOUND)
+CONS( 19??, gamate, 0, 0, gamate, gamate, gamate_state, gamate, "Bit Corp", "Gamate", 0)
+
+