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-rw-r--r--src/mame/drivers/c65.c669
1 files changed, 669 insertions, 0 deletions
diff --git a/src/mame/drivers/c65.c b/src/mame/drivers/c65.c
new file mode 100644
index 00000000000..f2160b9e2cd
--- /dev/null
+++ b/src/mame/drivers/c65.c
@@ -0,0 +1,669 @@
+// license:LGPL-2.1+
+// copyright-holders: Angelo Salese
+/***************************************************************************
+
+C=65 / C=64DX (c) 1991 Commodore
+
+Attempt at rewriting the driver ...
+
+TODO:
+- I need to subtract border color to -1 in order to get blue color (-> register is 6 and blue color is 5 in palette array).
+ Also top-left logo seems to draw wrong palette for entries 4,5,6,7. CPU core bug?
+
+Note:
+- VIC-4567 will be eventually be added via compile switch, once that I
+ get the hang of the system (and checking where the old code fails
+ eventually)
+
+***************************************************************************/
+
+
+#include "emu.h"
+#include "cpu/m6502/m4510.h"
+#include "machine/mos6526.h"
+
+#define MAIN_CLOCK XTAL_3_5MHz
+
+class c65_state : public driver_device
+{
+public:
+ c65_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_cia0(*this, "cia_0"),
+ m_cia1(*this, "cia_1"),
+ m_screen(*this, "screen"),
+ m_palette(*this, "palette"),
+ m_workram(*this, "wram"),
+ m_palred(*this, "redpal"),
+ m_palgreen(*this, "greenpal"),
+ m_palblue(*this, "bluepal"),
+ m_dmalist(*this, "dmalist"),
+ m_cram(*this, "cram"),
+ m_gfxdecode(*this, "gfxdecode")
+ { }
+
+ // devices
+ required_device<m4510_device> m_maincpu;
+ required_device<mos6526_device> m_cia0;
+ required_device<mos6526_device> m_cia1;
+ required_device<screen_device> m_screen;
+ required_device<palette_device> m_palette;
+ required_shared_ptr<UINT8> m_workram;
+ required_shared_ptr<UINT8> m_palred;
+ required_shared_ptr<UINT8> m_palgreen;
+ required_shared_ptr<UINT8> m_palblue;
+ required_shared_ptr<UINT8> m_dmalist;
+ required_shared_ptr<UINT8> m_cram;
+ required_device<gfxdecode_device> m_gfxdecode;
+
+ UINT8 *m_iplrom;
+ UINT8 m_keyb_input[10];
+ UINT8 m_keyb_mux;
+
+ DECLARE_READ8_MEMBER(vic4567_dummy_r);
+ DECLARE_WRITE8_MEMBER(vic4567_dummy_w);
+ DECLARE_WRITE8_MEMBER(PalRed_w);
+ DECLARE_WRITE8_MEMBER(PalGreen_w);
+ DECLARE_WRITE8_MEMBER(PalBlue_w);
+ DECLARE_WRITE8_MEMBER(DMAgic_w);
+ DECLARE_READ8_MEMBER(CIASelect_r);
+ DECLARE_WRITE8_MEMBER(CIASelect_w);
+ DECLARE_READ8_MEMBER(cia0_porta_r);
+ DECLARE_WRITE8_MEMBER(cia0_porta_w);
+ DECLARE_READ8_MEMBER(cia0_portb_r);
+ DECLARE_WRITE8_MEMBER(cia0_portb_w);
+ DECLARE_WRITE_LINE_MEMBER(cia0_irq);
+
+ DECLARE_READ8_MEMBER(dummy_r);
+
+ // screen updates
+ UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ DECLARE_PALETTE_INIT(c65);
+ DECLARE_DRIVER_INIT(c65);
+ DECLARE_DRIVER_INIT(c65pal);
+
+ INTERRUPT_GEN_MEMBER(vic3_vblank_irq);
+protected:
+ // driver_device overrides
+ virtual void machine_start();
+ virtual void machine_reset();
+
+ virtual void video_start();
+private:
+ UINT8 m_VIC2_IRQPend, m_VIC2_IRQMask;
+ /* 0x20: border color (TODO: different thread?) */
+ UINT8 m_VIC2_EXTColor;
+ /* 0x30: banking + PAL + EXT SYNC */
+ UINT8 m_VIC3_ControlA;
+ /* 0x31: video modes */
+ UINT8 m_VIC3_ControlB;
+ void PalEntryFlush(UINT8 offset);
+ void DMAgicExecute(address_space &space,UINT32 address);
+ void IRQCheck(UINT8 irq_cause);
+ int inner_x_char(int xoffs);
+ int inner_y_char(int yoffs);
+};
+
+void c65_state::video_start()
+{
+}
+
+// TODO: inline?
+int c65_state::inner_x_char(int xoffs)
+{
+ return xoffs>>3;
+}
+
+int c65_state::inner_y_char(int yoffs)
+{
+ return yoffs>>3;
+}
+
+UINT32 c65_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect )
+{
+ int y,x;
+ int border_color = m_VIC2_EXTColor & 0xf;
+
+ // TODO: border area
+ for(y=0;y<m_screen->height();y++)
+ {
+ for(x=0;x<m_screen->width();x++)
+ {
+ //int, xi,yi,xm,ym,dot_x;
+ int xi = inner_x_char(x);
+ int yi = inner_y_char(y);
+ int xm = 7 - (x & 7);
+ int ym = (y & 7);
+ UINT8 tile = m_workram[xi+yi*80+0x800];
+ UINT8 attr = m_cram[xi+yi*80];
+ if(attr & 0xf0)
+ attr = machine().rand() & 0xf;
+
+ int enable_dot = ((m_iplrom[(tile<<3)+ym+0xd000] >> xm) & 1);
+
+ //if(cliprect.contains(x, y))
+ bitmap.pix16(y, x) = m_palette->pen((enable_dot) ? attr & 0xf : border_color);
+
+
+ //gfx->opaque(bitmap,cliprect,tile,0,0,0,x*8,y*8);
+ }
+ }
+
+ return 0;
+}
+
+READ8_MEMBER(c65_state::vic4567_dummy_r)
+{
+ UINT8 res;
+
+ res=0xff;
+ switch(offset)
+ {
+ case 0x11:
+ res = (m_screen->vpos() & 0x100) >> 1;
+ return res;
+ case 0x12:
+ res = (m_screen->vpos() & 0xff);
+ return res;
+ case 0x15:
+ return 0xff; // silence log for now
+ case 0x19:
+ return m_VIC2_IRQPend;
+
+ case 0x1a:
+ return m_VIC2_IRQMask;
+
+ case 0x20:
+ return m_VIC2_EXTColor;
+
+ case 0x30:
+ return m_VIC3_ControlA;
+ case 0x31:
+ return m_VIC3_ControlB;
+ }
+
+ if(!space.debugger_access())
+ printf("%02x\n",offset); // TODO: PC
+ return res;
+}
+
+WRITE8_MEMBER(c65_state::vic4567_dummy_w)
+{
+ switch(offset)
+ {
+ case 0x19:
+ m_VIC2_IRQPend &= ~data;
+ IRQCheck(0);
+ break;
+ case 0x1a:
+ m_VIC2_IRQMask = data & 0xf;
+ IRQCheck(0);
+ break;
+ case 0x20:
+ m_VIC2_EXTColor = data & 0xf;
+ break;
+ /* KEY register, handles vic-iii and vic-ii modes via two consecutive writes
+ 0xa5 -> 0x96 vic-iii mode
+ any other write vic-ii mode
+ */
+ //case 0x2f: break;
+ case 0x30:
+ if((data & 0xfe) != 0x64)
+ printf("CONTROL A %02x\n",data);
+ m_VIC3_ControlA = data;
+ break;
+ case 0x31:
+ printf("CONTROL B %02x\n",data);
+ m_VIC3_ControlB = data;
+ break;
+ default:
+ if(!space.debugger_access())
+ printf("%02x %02x\n",offset,data);
+ break;
+ }
+
+}
+
+void c65_state::PalEntryFlush(UINT8 offset)
+{
+ m_palette->set_pen_color(offset, pal4bit(m_palred[offset]), pal4bit(m_palgreen[offset]), pal4bit(m_palblue[offset]));
+}
+
+WRITE8_MEMBER(c65_state::PalRed_w)
+{
+ m_palred[offset] = data;
+ PalEntryFlush(offset);
+}
+
+WRITE8_MEMBER(c65_state::PalGreen_w)
+{
+ m_palgreen[offset] = data;
+ PalEntryFlush(offset);
+}
+
+WRITE8_MEMBER(c65_state::PalBlue_w)
+{
+ m_palblue[offset] = data;
+ PalEntryFlush(offset);
+}
+
+void c65_state::DMAgicExecute(address_space &space,UINT32 address)
+{
+ UINT8 cmd;// = space.read_byte(address++);
+ UINT16 length; //= space.read_byte(address++);
+ UINT32 src, dst;
+ static const char *const dma_cmd_string[] =
+ {
+ "COPY", // 0
+ "MIX",
+ "SWAP",
+ "FILL"
+ };
+ cmd = space.read_byte(address++);
+ length = space.read_byte(address++);
+ length|=(space.read_byte(address++)<<8);
+ src = space.read_byte(address++);
+ src|=(space.read_byte(address++)<<8);
+ src|=(space.read_byte(address++)<<16);
+ dst = space.read_byte(address++);
+ dst|=(space.read_byte(address++)<<8);
+ dst|=(space.read_byte(address++)<<16);
+
+ if(cmd & 0xfc)
+ printf("%02x\n",cmd & 0xfc);
+ switch(cmd & 3)
+ {
+ case 0: // copy - TODO: untested
+ {
+ if(length != 1)
+ printf("DMAgic %s %02x -> %08x %04x (CHAIN=%s)\n",dma_cmd_string[cmd & 3],src,dst,length,cmd & 4 ? "yes" : "no");
+ UINT32 SourceIndex;
+ UINT32 DestIndex;
+ UINT16 SizeIndex;
+ SourceIndex = src & 0xfffff;
+ DestIndex = dst & 0xfffff;
+ SizeIndex = length;
+ do
+ {
+ space.write_byte(DestIndex++,space.read_byte(SourceIndex++));
+ SizeIndex--;
+ }while(SizeIndex != 0);
+
+ return;
+ }
+ case 3: // fill
+ {
+ /* TODO: upper bits of source */
+ printf("DMAgic %s %02x -> %08x %04x (CHAIN=%s)\n",dma_cmd_string[cmd & 3],src & 0xff,dst,length,cmd & 4 ? "yes" : "no");
+ UINT8 FillValue;
+ UINT32 DestIndex;
+ UINT16 SizeIndex;
+ FillValue = src & 0xff;
+ DestIndex = dst & 0xfffff;
+ SizeIndex = length;
+ do
+ {
+ space.write_byte(DestIndex++,FillValue);
+ SizeIndex--;
+ }while(SizeIndex != 0);
+ }
+ return;
+ }
+ printf("DMAgic %s %08x %08x %04x (CHAIN=%s)\n",dma_cmd_string[cmd & 3],src,dst,length,cmd & 4 ? "yes" : "no");
+}
+
+
+WRITE8_MEMBER(c65_state::DMAgic_w)
+{
+ m_dmalist[offset] = data;
+ if(offset == 0)
+ DMAgicExecute(space,(m_dmalist[0])|(m_dmalist[1]<<8)|(m_dmalist[2]<<16));
+}
+
+READ8_MEMBER(c65_state::CIASelect_r)
+{
+ if(m_VIC3_ControlA & 1)
+ return m_cram[offset];
+ else
+ {
+ // CIA at 0xdc00
+ switch((offset & 0x700) | 0x800)
+ {
+ case 0xc00:
+ return m_cia0->read(space,offset);
+ case 0xd00:
+ return m_cia1->read(space,offset);
+ default:
+ printf("Unknown I/O access read to offset %04x\n",offset);
+ break;
+ }
+
+ }
+
+ return 0xff;
+}
+
+WRITE8_MEMBER(c65_state::CIASelect_w)
+{
+ if(m_VIC3_ControlA & 1)
+ m_cram[offset] = data;
+ else
+ {
+ // CIA at 0xdc00
+ switch((offset & 0x700) | 0x800)
+ {
+ case 0xc00:
+ m_cia0->write(space,offset,data);
+ break;
+
+ case 0xd00:
+ m_cia1->write(space,offset,data);
+ break;
+ default:
+ printf("Unknown I/O access write to offset %04x data = %02x\n",offset,data);
+ break;
+ }
+ }
+
+}
+
+READ8_MEMBER(c65_state::cia0_porta_r)
+{
+ return 0xff;
+}
+
+READ8_MEMBER(c65_state::cia0_portb_r)
+{
+ static const char *const c64ports[] = { "ROW0", "ROW1", "ROW2", "ROW3", "ROW4", "ROW5", "ROW6", "ROW7" };
+ UINT8 res;
+
+ res = 0xff;
+ for(int i=0;i<8;i++)
+ {
+ m_keyb_input[i] = machine().root_device().ioport(c64ports[i])->read();
+
+ if(m_keyb_mux & 1 << (i))
+ res &= m_keyb_input[i];
+ }
+
+ return res;
+}
+
+WRITE8_MEMBER(c65_state::cia0_porta_w)
+{
+ m_keyb_mux = ~data;
+ printf("%02x\n",m_keyb_mux);
+}
+
+WRITE8_MEMBER(c65_state::cia0_portb_w)
+{
+}
+
+READ8_MEMBER(c65_state::dummy_r)
+{
+ return 0;
+}
+
+static ADDRESS_MAP_START( c65_map, AS_PROGRAM, 8, c65_state )
+ AM_RANGE(0x00000, 0x07fff) AM_RAM AM_SHARE("wram") // TODO: bank
+ AM_RANGE(0x0c800, 0x0cfff) AM_ROM AM_REGION("maincpu", 0xc800)
+ AM_RANGE(0x0d000, 0x0d07f) AM_READWRITE(vic4567_dummy_r,vic4567_dummy_w) // 0x0d000, 0x0d07f VIC-4567
+ AM_RANGE(0x0d080, 0x0d081) AM_READ(dummy_r) // 0x0d080, 0x0d09f FDC
+ // 0x0d0a0, 0x0d0ff Ram Expansion Control (REC)
+ AM_RANGE(0x0d100, 0x0d1ff) AM_RAM_WRITE(PalRed_w) AM_SHARE("redpal")// 0x0d100, 0x0d1ff Red Palette
+ AM_RANGE(0x0d200, 0x0d2ff) AM_RAM_WRITE(PalGreen_w) AM_SHARE("greenpal") // 0x0d200, 0x0d2ff Green Palette
+ AM_RANGE(0x0d300, 0x0d3ff) AM_RAM_WRITE(PalBlue_w) AM_SHARE("bluepal") // 0x0d300, 0x0d3ff Blue Palette
+ // 0x0d400, 0x0d4*f Right SID
+ // 0x0d440, 0x0d4*f Left SID
+ AM_RANGE(0x0d600, 0x0d6ff) AM_RAM // 0x0d600, 0x0d6** UART
+ AM_RANGE(0x0d700, 0x0d702) AM_WRITE(DMAgic_w) AM_SHARE("dmalist") // 0x0d700, 0x0d7** DMAgic
+ //AM_RANGE(0x0d703, 0x0d703) AM_READ(DMAgic_r)
+ // 0x0d800, 0x0d8** Color matrix
+ AM_RANGE(0x0d800, 0x0dfff) AM_READWRITE(CIASelect_r,CIASelect_w) AM_SHARE("cram")
+ // 0x0dc00, 0x0dc** CIA-1
+ // 0x0dd00, 0x0dd** CIA-2
+ // 0x0de00, 0x0de** Ext I/O Select 1
+ // 0x0df00, 0x0df** Ext I/O Select 2 (RAM window?)
+ AM_RANGE(0x0e000, 0x0ffff) AM_ROM AM_REGION("maincpu",0x0e000)
+ AM_RANGE(0x10000, 0x1f7ff) AM_RAM
+ AM_RANGE(0x1f800, 0x1ffff) AM_RAM // VRAM attributes
+ AM_RANGE(0x20000, 0x3ffff) AM_ROM AM_REGION("maincpu",0)
+ADDRESS_MAP_END
+
+
+
+static INPUT_PORTS_START( c65 )
+ PORT_START( "ROW0" )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Crsr Down Up") PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CHAR(UCHAR_MAMEKEY(UP))
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F5))
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F3))
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1))
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F7))
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Crsr Right Left") PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("INST DEL") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_CHAR(UCHAR_MAMEKEY(INSERT))
+
+ PORT_START( "ROW1" )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Shift (Left)") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W')
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
+
+ PORT_START( "ROW2" )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('T')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R')
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
+
+ PORT_START( "ROW3" )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y')
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
+
+ PORT_START( "ROW4" )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('N')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I')
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
+
+ PORT_START( "ROW5" )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(':') PORT_CHAR('[')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('-')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P')
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('+')
+
+ PORT_START( "ROW6" )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\xE2\x86\x91 Pi") PORT_CODE(KEYCODE_DEL) PORT_CHAR(0x2191) PORT_CHAR(0x03C0)
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('=')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Shift (Right)") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CLR HOME") PORT_CODE(KEYCODE_INSERT) PORT_CHAR(UCHAR_MAMEKEY(HOME))
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(';') PORT_CHAR(']')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('*')
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('\xA3')
+
+ PORT_START( "ROW7" )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RUN STOP") PORT_CODE(KEYCODE_HOME)
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CBM") PORT_CODE(KEYCODE_LALT)
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TAB) PORT_CHAR(UCHAR_SHIFT_2)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\xE2\x86\x90") PORT_CODE(KEYCODE_TILDE) PORT_CHAR(0x2190)
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+
+INPUT_PORTS_END
+
+
+void c65_state::machine_start()
+{
+ m_iplrom = memregion("maincpu")->base();
+
+ save_pointer(NAME(m_cram.target()), 0x800);
+}
+
+void c65_state::machine_reset()
+{
+}
+
+
+PALETTE_INIT_MEMBER(c65_state, c65)
+{
+ // TODO: initial state?
+}
+
+static const gfx_layout charlayout =
+{
+ 8,8,
+ 0x1000/8,
+ 1,
+ { RGN_FRAC(0,1) },
+ { 0, 1, 2, 3, 4, 5, 6, 7 },
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
+ 8*8
+};
+
+static GFXDECODE_START( c65 )
+ GFXDECODE_ENTRY( "maincpu", 0xd000, charlayout, 0, 16 ) // another identical copy is at 0x9000
+GFXDECODE_END
+
+void c65_state::IRQCheck(UINT8 irq_cause)
+{
+ m_VIC2_IRQPend |= (irq_cause != 0) ? 0x80 : 0x00;
+ m_VIC2_IRQPend |= irq_cause;
+
+ m_maincpu->set_input_line(M4510_IRQ_LINE,m_VIC2_IRQMask & m_VIC2_IRQPend ? ASSERT_LINE : CLEAR_LINE);
+}
+
+INTERRUPT_GEN_MEMBER(c65_state::vic3_vblank_irq)
+{
+ IRQCheck(1);
+ //if(m_VIC2_IRQMask & 1)
+ // m_maincpu->set_input_line(M4510_IRQ_LINE,HOLD_LINE);
+}
+
+WRITE_LINE_MEMBER(c65_state::cia0_irq)
+{
+ printf("%d IRQ\n",state);
+
+#if 0
+ if(state)
+ {
+ static const char *const c64ports[] = { "ROW0", "ROW1", "ROW2", "ROW3", "ROW4", "ROW5", "ROW6", "ROW7" };
+ for(int i=0;i<8;i++)
+ m_keyb_input[i] = machine().root_device().ioport(c64ports[i])->read();
+ }
+#endif
+// m_cia0_irq = state;
+// c65_irq(state || m_vicirq);
+}
+
+static MACHINE_CONFIG_START( c65, c65_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",M4510,MAIN_CLOCK)
+ MCFG_CPU_PROGRAM_MAP(c65_map)
+ MCFG_CPU_VBLANK_INT_DRIVER("screen",c65_state,vic3_vblank_irq)
+
+ MCFG_DEVICE_ADD("cia_0", MOS6526, MAIN_CLOCK)
+ MCFG_MOS6526_TOD(60)
+ MCFG_MOS6526_IRQ_CALLBACK(WRITELINE(c65_state, cia0_irq))
+ MCFG_MOS6526_PA_INPUT_CALLBACK(READ8(c65_state, cia0_porta_r))
+ MCFG_MOS6526_PA_OUTPUT_CALLBACK(WRITE8(c65_state, cia0_porta_w))
+ MCFG_MOS6526_PB_INPUT_CALLBACK(READ8(c65_state, cia0_portb_r))
+ MCFG_MOS6526_PB_OUTPUT_CALLBACK(WRITE8(c65_state, cia0_portb_w))
+
+ MCFG_DEVICE_ADD("cia_1", MOS6526, MAIN_CLOCK)
+ MCFG_MOS6526_TOD(60)
+// MCFG_MOS6526_IRQ_CALLBACK(WRITELINE(c65_state, c65_cia1_interrupt))
+// MCFG_MOS6526_PA_INPUT_CALLBACK(READ8(c65_state, c65_cia1_port_a_r))
+// MCFG_MOS6526_PA_OUTPUT_CALLBACK(WRITE8(c65_state, c65_cia1_port_a_w))
+
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+// MCFG_SCREEN_REFRESH_RATE(60)
+// MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
+ MCFG_SCREEN_UPDATE_DRIVER(c65_state, screen_update)
+// MCFG_SCREEN_SIZE(32*8, 32*8)
+// MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 32*8-1)
+ MCFG_SCREEN_RAW_PARAMS(MAIN_CLOCK*4, 910, 0, 640, 262, 0, 200) // mods needed
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_GFXDECODE_ADD("gfxdecode", "palette", c65)
+
+ MCFG_PALETTE_ADD("palette", 0x100)
+ MCFG_PALETTE_INIT_OWNER(c65_state, c65)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+// MCFG_SOUND_ADD("aysnd", AY8910, MAIN_CLOCK/4)
+// MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.30)
+
+ // software list
+ MCFG_SOFTWARE_LIST_ADD("flop_list", "c65_flop")
+MACHINE_CONFIG_END
+
+
+/***************************************************************************
+
+ Game driver(s)
+
+***************************************************************************/
+
+ROM_START( c65 )
+ ROM_REGION( 0x20000, "maincpu", 0 )
+ ROM_SYSTEM_BIOS( 0, "910111", "V0.9.910111" )
+ ROMX_LOAD( "910111.bin", 0x0000, 0x20000, CRC(c5d8d32e) SHA1(71c05f098eff29d306b0170e2c1cdeadb1a5f206), ROM_BIOS(1) )
+ ROM_SYSTEM_BIOS( 1, "910523", "V0.9.910523" )
+ ROMX_LOAD( "910523.bin", 0x0000, 0x20000, CRC(e8235dd4) SHA1(e453a8e7e5b95de65a70952e9d48012191e1b3e7), ROM_BIOS(2) )
+ ROM_SYSTEM_BIOS( 2, "910626", "V0.9.910626" )
+ ROMX_LOAD( "910626.bin", 0x0000, 0x20000, CRC(12527742) SHA1(07c185b3bc58410183422f7ac13a37ddd330881b), ROM_BIOS(3) )
+ ROM_SYSTEM_BIOS( 3, "910828", "V0.9.910828" )
+ ROMX_LOAD( "910828.bin", 0x0000, 0x20000, CRC(3ee40b06) SHA1(b63d970727a2b8da72a0a8e234f3c30a20cbcb26), ROM_BIOS(4) )
+ ROM_SYSTEM_BIOS( 4, "911001", "V0.9.911001" )
+ ROMX_LOAD( "911001.bin", 0x0000, 0x20000, CRC(0888b50f) SHA1(129b9a2611edaebaa028ac3e3f444927c8b1fc5d), ROM_BIOS(5) )
+ROM_END
+
+ROM_START( c64dx )
+ ROM_REGION( 0x20000, "maincpu", 0 )
+ ROM_LOAD( "910429.bin", 0x0000, 0x20000, CRC(b025805c) SHA1(c3b05665684f74adbe33052a2d10170a1063ee7d) )
+ROM_END
+
+DRIVER_INIT_MEMBER(c65_state,c65)
+{
+// m_dma.version = 2;
+// c65_common_driver_init();
+}
+
+DRIVER_INIT_MEMBER(c65_state,c65pal)
+{
+// m_dma.version = 1;
+// c65_common_driver_init();
+// m_pal = 1;
+}
+
+COMP( 1991, c65, 0, 0, c65, c65, c65_state, c65, "Commodore Business Machines", "Commodore 65 Development System (Prototype, NTSC)", MACHINE_NOT_WORKING )
+COMP( 1991, c64dx, c65, 0, c65, c65, c65_state, c65pal, "Commodore Business Machines", "Commodore 64DX Development System (Prototype, PAL, German)", MACHINE_NOT_WORKING )