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Diffstat (limited to 'src/mame/drivers/k8915.cpp')
-rw-r--r--src/mame/drivers/k8915.cpp187
1 files changed, 187 insertions, 0 deletions
diff --git a/src/mame/drivers/k8915.cpp b/src/mame/drivers/k8915.cpp
new file mode 100644
index 00000000000..7ec4cde5d0e
--- /dev/null
+++ b/src/mame/drivers/k8915.cpp
@@ -0,0 +1,187 @@
+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic, Robbbert
+/***************************************************************************
+
+ Robotron K8915
+
+ 30/08/2010 Skeleton driver
+
+ When it says DIAGNOSTIC RAZ P, press enter.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "machine/keyboard.h"
+
+#define KEYBOARD_TAG "keyboard"
+
+class k8915_state : public driver_device
+{
+public:
+ k8915_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_p_videoram(*this, "p_videoram")
+ {
+ }
+
+ required_device<cpu_device> m_maincpu;
+ DECLARE_READ8_MEMBER( k8915_52_r );
+ DECLARE_READ8_MEMBER( k8915_53_r );
+ DECLARE_WRITE8_MEMBER( k8915_a8_w );
+ DECLARE_WRITE8_MEMBER( kbd_put );
+ required_shared_ptr<UINT8> m_p_videoram;
+ UINT8 *m_p_chargen;
+ UINT8 m_framecnt;
+ UINT8 m_term_data;
+ virtual void machine_reset();
+ virtual void video_start();
+ UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ DECLARE_DRIVER_INIT(k8915);
+};
+
+READ8_MEMBER( k8915_state::k8915_52_r )
+{
+// get data from ascii keyboard
+ UINT8 ret = m_term_data;
+ m_term_data = 0;
+ return ret;
+}
+
+READ8_MEMBER( k8915_state::k8915_53_r )
+{
+// keyboard status
+ return m_term_data ? 1 : 0;
+}
+
+WRITE8_MEMBER( k8915_state::k8915_a8_w )
+{
+// seems to switch ram and rom around.
+ if (data == 0x87)
+ membank("boot")->set_entry(0); // ram at 0000
+ else
+ membank("boot")->set_entry(1); // rom at 0000
+}
+
+static ADDRESS_MAP_START(k8915_mem, AS_PROGRAM, 8, k8915_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x0fff) AM_RAMBANK("boot")
+ AM_RANGE(0x1000, 0x17ff) AM_RAM AM_SHARE("p_videoram")
+ AM_RANGE(0x1800, 0xffff) AM_RAM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(k8915_io, AS_IO, 8, k8915_state)
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0x52, 0x52) AM_READ(k8915_52_r)
+ AM_RANGE(0x53, 0x53) AM_READ(k8915_53_r)
+ AM_RANGE(0xa8, 0xa8) AM_WRITE(k8915_a8_w)
+ADDRESS_MAP_END
+
+/* Input ports */
+static INPUT_PORTS_START( k8915 )
+INPUT_PORTS_END
+
+void k8915_state::machine_reset()
+{
+ membank("boot")->set_entry(1);
+}
+
+DRIVER_INIT_MEMBER(k8915_state,k8915)
+{
+ UINT8 *RAM = memregion("maincpu")->base();
+ membank("boot")->configure_entries(0, 2, &RAM[0x0000], 0x10000);
+}
+
+void k8915_state::video_start()
+{
+ m_p_chargen = memregion("chargen")->base();
+}
+
+UINT32 k8915_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ UINT8 y,ra,chr,gfx;
+ UINT16 sy=0,ma=0,x;
+
+ m_framecnt++;
+
+ for (y = 0; y < 25; y++)
+ {
+ for (ra = 0; ra < 10; ra++)
+ {
+ UINT16 *p = &bitmap.pix16(sy++);
+
+ for (x = ma; x < ma + 80; x++)
+ {
+ gfx = 0;
+
+ if (ra < 9)
+ {
+ chr = m_p_videoram[x];
+
+ /* Take care of flashing characters */
+ if ((chr & 0x80) && (m_framecnt & 0x08))
+ chr = 0x20;
+
+ chr &= 0x7f;
+
+ gfx = m_p_chargen[(chr<<4) | ra ];
+ }
+
+ /* Display a scanline of a character */
+ *p++ = BIT(gfx, 7);
+ *p++ = BIT(gfx, 6);
+ *p++ = BIT(gfx, 5);
+ *p++ = BIT(gfx, 4);
+ *p++ = BIT(gfx, 3);
+ *p++ = BIT(gfx, 2);
+ *p++ = BIT(gfx, 1);
+ *p++ = BIT(gfx, 0);
+ }
+ }
+ ma+=80;
+ }
+ return 0;
+}
+
+WRITE8_MEMBER( k8915_state::kbd_put )
+{
+ m_term_data = data;
+}
+
+static MACHINE_CONFIG_START( k8915, k8915_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", Z80, XTAL_16MHz / 4)
+ MCFG_CPU_PROGRAM_MAP(k8915_mem)
+ MCFG_CPU_IO_MAP(k8915_io)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_UPDATE_DRIVER(k8915_state, screen_update)
+ MCFG_SCREEN_SIZE(640, 250)
+ MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 249)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette")
+
+ MCFG_DEVICE_ADD(KEYBOARD_TAG, GENERIC_KEYBOARD, 0)
+ MCFG_GENERIC_KEYBOARD_CB(WRITE8(k8915_state, kbd_put))
+MACHINE_CONFIG_END
+
+
+/* ROM definition */
+ROM_START( k8915 )
+ ROM_REGION( 0x11000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "k8915.bin", 0x10000, 0x1000, CRC(ca70385f) SHA1(a34c14adae9be821678aed7f9e33932ee1f3e61c))
+
+ /* character generator not dumped, using the one from 'c10' for now */
+ ROM_REGION( 0x2000, "chargen", 0 )
+ ROM_LOAD( "c10_char.bin", 0x0000, 0x2000, BAD_DUMP CRC(cb530b6f) SHA1(95590bbb433db9c4317f535723b29516b9b9fcbf))
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1982, k8915, 0, 0, k8915, k8915, k8915_state, k8915, "Robotron", "K8915", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)