summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/drivers/ec65.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mess/drivers/ec65.c')
-rw-r--r--src/mess/drivers/ec65.c325
1 files changed, 325 insertions, 0 deletions
diff --git a/src/mess/drivers/ec65.c b/src/mess/drivers/ec65.c
new file mode 100644
index 00000000000..b7b3d441669
--- /dev/null
+++ b/src/mess/drivers/ec65.c
@@ -0,0 +1,325 @@
+/***************************************************************************
+
+ EC-65
+
+ 16/07/2009 Initial driver.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/m6502/m6502.h"
+#include "cpu/g65816/g65816.h"
+#include "video/mc6845.h"
+#include "machine/6821pia.h"
+#include "machine/6522via.h"
+#include "machine/6551acia.h"
+#include "machine/6850acia.h"
+#include "machine/keyboard.h"
+
+#define PIA6821_TAG "pia6821"
+#define ACIA6850_TAG "acia6850"
+#define ACIA6551_TAG "acia6551"
+#define VIA6522_0_TAG "via6522_0"
+#define VIA6522_1_TAG "via6522_1"
+#define MC6845_TAG "mc6845"
+
+class ec65_state : public driver_device
+{
+public:
+ ec65_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_via_0(*this, VIA6522_0_TAG),
+ m_p_videoram(*this, "videoram"){ }
+
+ DECLARE_READ8_MEMBER(ec65_via_read_a);
+ DECLARE_READ8_MEMBER(ec65_read_ca1 );
+ DECLARE_READ8_MEMBER(ec65_via_read_b);
+ DECLARE_WRITE8_MEMBER(ec65_via_write_a);
+ DECLARE_WRITE8_MEMBER(ec65_via_write_b);
+ DECLARE_WRITE8_MEMBER(kbd_put);
+ UINT8 *m_p_chargen;
+ UINT8 m_keyboard_input;
+ optional_device<via6522_device> m_via_0;
+ required_shared_ptr<UINT8> m_p_videoram;
+};
+
+static ADDRESS_MAP_START(ec65_mem, AS_PROGRAM, 8, ec65_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0xdfff) AM_RAM
+ AM_RANGE(0xe000, 0xe003) AM_DEVREADWRITE(PIA6821_TAG, pia6821_device, read, write)
+ AM_RANGE(0xe010, 0xe010) AM_DEVREADWRITE(ACIA6850_TAG, acia6850_device, status_read, control_write)
+ AM_RANGE(0xe011, 0xe011) AM_DEVREADWRITE(ACIA6850_TAG, acia6850_device, data_read, data_write)
+ AM_RANGE(0xe100, 0xe10f) AM_DEVREADWRITE(VIA6522_0_TAG, via6522_device, read, write)
+ AM_RANGE(0xe110, 0xe11f) AM_DEVREADWRITE(VIA6522_1_TAG, via6522_device, read, write)
+ AM_RANGE(0xe130, 0xe133) AM_DEVREADWRITE(ACIA6551_TAG, acia6551_device, read, write)
+ AM_RANGE(0xe140, 0xe140) AM_DEVWRITE(MC6845_TAG, mc6845_device, address_w)
+ AM_RANGE(0xe141, 0xe141) AM_DEVREADWRITE(MC6845_TAG, mc6845_device, register_r , register_w)
+ AM_RANGE(0xe400, 0xe7ff) AM_RAM // 1KB on-board RAM
+ AM_RANGE(0xe800, 0xefff) AM_RAM AM_SHARE("videoram")
+ AM_RANGE(0xf000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(ec65k_mem, AS_PROGRAM, 8, ec65_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0xe7ff) AM_RAM
+ AM_RANGE(0xe800, 0xefff) AM_RAM AM_SHARE("videoram")
+ AM_RANGE(0xf000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+static const pia6821_interface ec65_pia_interface=
+{
+ DEVCB_NULL, /* port A input */
+ DEVCB_NULL, /* port B input */
+ DEVCB_NULL, /* CA1 input */
+ DEVCB_NULL, /* CB1 input */
+ DEVCB_NULL, /* CA2 input */
+ DEVCB_NULL, /* CB2 input */
+ DEVCB_NULL, /* port A output */
+ DEVCB_NULL, /* port B output */
+ DEVCB_NULL, /* CA2 output */
+ DEVCB_NULL, /* CB2 output */
+ DEVCB_NULL, /* IRQA output */
+ DEVCB_NULL /* IRQB output */
+};
+
+static ACIA6850_INTERFACE( ec65_acia_intf )
+{
+ 0,
+ 0,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL
+};
+
+READ8_MEMBER( ec65_state::ec65_via_read_a)
+{
+ return m_keyboard_input;
+}
+
+READ8_MEMBER( ec65_state::ec65_read_ca1 )
+{
+ return 0;
+}
+
+READ8_MEMBER( ec65_state::ec65_via_read_b)
+{
+ return 0xff;
+}
+
+WRITE8_MEMBER( ec65_state::ec65_via_write_a )
+{
+}
+
+WRITE8_MEMBER( ec65_state::ec65_via_write_b )
+{
+}
+
+static const via6522_interface ec65_via_1_intf=
+{
+ DEVCB_NULL, /* in_a_func */
+ DEVCB_DRIVER_MEMBER(ec65_state, ec65_via_read_b), /* in_b_func */
+ DEVCB_NULL, /* in_ca1_func */
+ DEVCB_NULL, /* in_cb1_func */
+ DEVCB_NULL, /* in_ca2_func */
+ DEVCB_NULL, /* in_cb2_func */
+ DEVCB_DRIVER_MEMBER(ec65_state, ec65_via_write_a), /* out_a_func */
+ DEVCB_DRIVER_MEMBER(ec65_state, ec65_via_write_b), /* out_b_func */
+ DEVCB_NULL, /* out_ca1_func */
+ DEVCB_NULL, /* out_cb1_func */
+ DEVCB_NULL, /* out_ca2_func */
+ DEVCB_NULL, /* out_cb2_func */
+ DEVCB_NULL, /* irq_func */
+};
+
+static const via6522_interface ec65_via_0_intf=
+{
+ DEVCB_DRIVER_MEMBER(ec65_state, ec65_via_read_a), /* in_a_func */
+ DEVCB_NULL, /* in_b_func */
+ DEVCB_DRIVER_MEMBER(ec65_state, ec65_read_ca1), /* in_ca1_func */
+ DEVCB_NULL, /* in_cb1_func */
+ DEVCB_NULL, /* in_ca2_func */
+ DEVCB_NULL, /* in_cb2_func */
+ DEVCB_NULL, /* out_a_func */
+ DEVCB_NULL, /* out_b_func */
+ DEVCB_NULL, /* out_ca1_func */
+ DEVCB_NULL, /* out_cb1_func */
+ DEVCB_NULL, /* out_ca2_func */
+ DEVCB_NULL, /* out_cb2_func */
+ DEVCB_NULL, /* irq_func */
+};
+
+/* Input ports */
+static INPUT_PORTS_START( ec65 )
+INPUT_PORTS_END
+
+WRITE8_MEMBER( ec65_state::kbd_put )
+{
+ if (data)
+ {
+ m_keyboard_input = data;
+ m_via_0->write_ca1(1);
+ m_via_0->write_ca1(0);
+ }
+}
+
+
+static ASCII_KEYBOARD_INTERFACE( keyboard_intf )
+{
+ DEVCB_DRIVER_MEMBER(ec65_state, kbd_put)
+};
+
+static MACHINE_RESET(ec65)
+{
+}
+
+static VIDEO_START( ec65 )
+{
+ ec65_state *state = machine.driver_data<ec65_state>();
+ state->m_p_chargen = state->memregion("chargen")->base();
+}
+
+static MC6845_UPDATE_ROW( ec65_update_row )
+{
+ ec65_state *state = device->machine().driver_data<ec65_state>();
+ const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
+ UINT8 chr,gfx,inv;
+ UINT16 mem,x;
+ UINT32 *p = &bitmap.pix32(y);
+
+ for (x = 0; x < x_count; x++)
+ {
+ inv = (x == cursor_x) ? 0xff : 0;
+ mem = (ma + x) & 0x7ff;
+ chr = state->m_p_videoram[mem];
+
+ /* get pattern of pixels for that character scanline */
+ gfx = state->m_p_chargen[(chr<<4) | (ra & 0x0f)] ^ inv;
+
+ /* Display a scanline of a character */
+ *p++ = palette[BIT(gfx, 7)];
+ *p++ = palette[BIT(gfx, 6)];
+ *p++ = palette[BIT(gfx, 5)];
+ *p++ = palette[BIT(gfx, 4)];
+ *p++ = palette[BIT(gfx, 3)];
+ *p++ = palette[BIT(gfx, 2)];
+ *p++ = palette[BIT(gfx, 1)];
+ *p++ = palette[BIT(gfx, 0)];
+ }
+}
+
+static const mc6845_interface ec65_crtc6845_interface =
+{
+ "screen",
+ 8 /*?*/,
+ NULL,
+ ec65_update_row,
+ NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ NULL
+};
+
+
+/* F4 Character Displayer */
+static const gfx_layout ec65_charlayout =
+{
+ 8, 8, /* 8 x 8 characters */
+ 256, /* 256 characters */
+ 1, /* 1 bits per pixel */
+ { 0 }, /* no bitplanes */
+ /* x offsets */
+ { 0, 1, 2, 3, 4, 5, 6, 7 },
+ /* y offsets */
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
+ 8*16 /* every char takes 16 bytes */
+};
+
+static GFXDECODE_START( ec65 )
+ GFXDECODE_ENTRY( "chargen", 0x0000, ec65_charlayout, 0, 1 )
+GFXDECODE_END
+
+static MACHINE_CONFIG_START( ec65, ec65_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",M6502, XTAL_4MHz / 4)
+ MCFG_CPU_PROGRAM_MAP(ec65_mem)
+
+ MCFG_MACHINE_RESET(ec65)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_SIZE(640, 200)
+ MCFG_SCREEN_VISIBLE_AREA(0, 640 - 1, 0, 200 - 1)
+ MCFG_SCREEN_UPDATE_DEVICE(MC6845_TAG, mc6845_device, screen_update)
+
+ MCFG_GFXDECODE(ec65)
+ MCFG_PALETTE_LENGTH(2)
+ MCFG_PALETTE_INIT(black_and_white)
+
+ MCFG_MC6845_ADD(MC6845_TAG, MC6845, XTAL_16MHz / 8, ec65_crtc6845_interface)
+
+ MCFG_VIDEO_START(ec65)
+
+ /* devices */
+ MCFG_PIA6821_ADD( PIA6821_TAG, ec65_pia_interface )
+ MCFG_ACIA6850_ADD(ACIA6850_TAG, ec65_acia_intf)
+ MCFG_VIA6522_ADD(VIA6522_0_TAG, XTAL_4MHz / 4, ec65_via_0_intf)
+ MCFG_VIA6522_ADD(VIA6522_1_TAG, XTAL_4MHz / 4, ec65_via_1_intf)
+ MCFG_ACIA6551_ADD(ACIA6551_TAG) // have XTAL of 1.8432MHz connected
+ MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf)
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_START( ec65k, ec65_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",G65816, XTAL_4MHz) // can use 4,2 or 1 MHz
+ MCFG_CPU_PROGRAM_MAP(ec65k_mem)
+
+ MCFG_MACHINE_RESET(ec65)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_SIZE(640, 200)
+ MCFG_SCREEN_VISIBLE_AREA(0, 640 - 1, 0, 200 - 1)
+ MCFG_SCREEN_UPDATE_DEVICE(MC6845_TAG, mc6845_device, screen_update)
+
+ MCFG_GFXDECODE(ec65)
+ MCFG_PALETTE_LENGTH(2)
+ MCFG_PALETTE_INIT(black_and_white)
+
+ MCFG_MC6845_ADD(MC6845_TAG, MC6845, XTAL_16MHz / 8, ec65_crtc6845_interface)
+
+ MCFG_VIDEO_START(ec65)
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( ec65 )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "ec65.ic6", 0xf000, 0x1000, CRC(acd928ed) SHA1(e02a688a057ff77294717cf7b887425fed0b1153))
+
+ ROM_REGION( 0x1000, "chargen", 0 )
+ ROM_LOAD( "chargen.ic19", 0x0000, 0x1000, CRC(9b56a28d) SHA1(41c04fd9fb542c50287bc0e366358a61fc4b0cd4)) // Located on VDU card
+ROM_END
+
+ROM_START( ec65k )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "ec65k.ic19", 0xf000, 0x1000, CRC(5e5a890a) SHA1(daa006f2179fd156833e11c73b37881cafe5dede))
+
+ ROM_REGION( 0x1000, "chargen", 0 )
+ ROM_LOAD( "chargen.ic19", 0x0000, 0x1000, CRC(9b56a28d) SHA1(41c04fd9fb542c50287bc0e366358a61fc4b0cd4)) // Located on VDU card
+ROM_END
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1985, ec65, 0, 0, ec65, ec65, driver_device, 0, "Elektor Electronics", "EC-65", GAME_NOT_WORKING | GAME_NO_SOUND)
+COMP( 1985, ec65k, ec65, 0, ec65k, ec65, driver_device, 0, "Elektor Electronics", "EC-65K", GAME_NOT_WORKING | GAME_NO_SOUND)
+