summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/tim100.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mame/drivers/tim100.c')
-rw-r--r--src/mame/drivers/tim100.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/src/mame/drivers/tim100.c b/src/mame/drivers/tim100.c
new file mode 100644
index 00000000000..212a2e60f39
--- /dev/null
+++ b/src/mame/drivers/tim100.c
@@ -0,0 +1,168 @@
+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic
+/***************************************************************************
+
+ TIM-100 Terminal
+ Mihajlo Pupin Institute
+
+ 21/12/2012 Skeleton driver.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/i8085/i8085.h"
+#include "machine/i8251.h"
+#include "video/i8275.h"
+
+class tim100_state : public driver_device
+{
+public:
+ tim100_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_palette(*this, "palette")
+ { }
+
+ required_device<cpu_device> m_maincpu;
+ required_device<palette_device> m_palette;
+ virtual void machine_start();
+ virtual void machine_reset();
+ I8275_DRAW_CHARACTER_MEMBER( crtc_display_pixels );
+
+private:
+ UINT8 *m_charmap;
+};
+
+static ADDRESS_MAP_START(tim100_mem, AS_PROGRAM, 8, tim100_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x1fff) AM_ROM // 2764 at U16
+ AM_RANGE(0x2000, 0x27ff) AM_RAM // 2KB static ram CDM6116A at U15
+
+ AM_RANGE(0xc000, 0xc001) AM_DEVREADWRITE("i8276", i8275_device, read, write)
+
+ AM_RANGE(0x6000, 0x6000) AM_DEVREADWRITE("uart_u17", i8251_device, status_r, control_w)
+ AM_RANGE(0x6001, 0x6001) AM_DEVREADWRITE("uart_u17", i8251_device, data_r, data_w)
+
+ AM_RANGE(0x8000, 0x8000) AM_DEVREADWRITE("uart_u18", i8251_device, status_r, control_w)
+ AM_RANGE(0x8001, 0x8001) AM_DEVREADWRITE("uart_u18", i8251_device, data_r, data_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(tim100_io, AS_IO, 8, tim100_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ADDRESS_MAP_END
+
+
+/* Input ports */
+static INPUT_PORTS_START( tim100 )
+INPUT_PORTS_END
+
+static const rgb_t tim100_palette[3] = {
+ rgb_t(0x00, 0x00, 0x00), // black
+ rgb_t(0xa0, 0xa0, 0xa0), // white
+ rgb_t(0xff, 0xff, 0xff) // highlight
+};
+
+void tim100_state::machine_start()
+{
+ m_charmap = memregion("chargen")->base();
+}
+
+void tim100_state::machine_reset()
+{
+ m_palette->set_pen_colors(0, tim100_palette, ARRAY_LENGTH(tim100_palette));
+}
+
+const gfx_layout tim100_charlayout =
+{
+ 12, 16, /* 8x16 characters */
+ 256, /* 128 characters */
+ 1, /* 1 bits per pixel */
+ {0}, /* no bitplanes; 1 bit per pixel */
+ {0,1,2,3,4,5,0x8000,0x8001,0x8002,0x8003,0x8004,0x8005},
+ {0 * 8, 1 * 8, 2 * 8, 3 * 8, 4 * 8, 5 * 8, 6 * 8, 7 * 8,
+ 8 * 8, 9 * 8, 10 * 8, 11 * 8, 12 * 8, 13 * 8, 14 * 8, 15 * 8},
+ 8*16 /* space between characters */
+};
+
+static GFXDECODE_START( tim100 )
+ GFXDECODE_ENTRY( "chargen", 0x0000, tim100_charlayout, 0, 1 )
+GFXDECODE_END
+
+
+// this gets called via a (i8275_dack_w), so does nothing currently
+// once fixed, pixel count needs adjusting
+I8275_DRAW_CHARACTER_MEMBER( tim100_state::crtc_display_pixels )
+{
+ int i;
+ const rgb_t *palette = m_palette->palette()->entry_list_raw();
+ UINT8 pixels = m_charmap[(linecount & 15) + (charcode << 4)];
+ if (vsp)
+ {
+ pixels = 0;
+ }
+
+ if (lten)
+ {
+ pixels = 0xff;
+ }
+
+ if (rvv)
+ {
+ pixels ^= 0xff;
+ }
+
+ for(i=0;i<8;i++) // 6 pixels
+ {
+ bitmap.pix32(y, x + i) = palette[(pixels >> (7-i)) & 1 ? (hlgt ? 2 : 1) : 0];
+ }
+}
+
+static MACHINE_CONFIG_START( tim100, tim100_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",I8085A, XTAL_4_9152MHz) // divider unknown
+ MCFG_CPU_PROGRAM_MAP(tim100_mem)
+ MCFG_CPU_IO_MAP(tim100_io)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_UPDATE_DEVICE("i8276", i8275_device, screen_update)
+ MCFG_SCREEN_REFRESH_RATE(50)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_SIZE(40*16, 16*16)
+ MCFG_SCREEN_VISIBLE_AREA(0, 40*16-1, 0, 16*16-1)
+
+ MCFG_GFXDECODE_ADD("gfxdecode", "palette", tim100 )
+
+ MCFG_DEVICE_ADD("i8276", I8275, XTAL_4_9152MHz)
+ MCFG_I8275_CHARACTER_WIDTH(16)
+ MCFG_I8275_DRAW_CHARACTER_CALLBACK_OWNER(tim100_state, crtc_display_pixels)
+ MCFG_I8275_IRQ_CALLBACK(INPUTLINE("maincpu", I8085_RST65_LINE))
+
+ MCFG_PALETTE_ADD("palette", 3)
+
+ MCFG_DEVICE_ADD("uart_u17", I8251, 0)
+ MCFG_DEVICE_ADD("uart_u18", I8251, 0)
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( tim100 )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "tim 100 v.3.2.0.u16", 0x0000, 0x2000, CRC(4de9c8ad) SHA1(b0914d6e8d618e92a87b4b39c35391541251e8cc))
+
+ // The first and 2nd halves of these roms are identical, confirmed ok
+ ROM_REGION( 0x2000, "chargen", ROMREGION_INVERT )
+ ROM_SYSTEM_BIOS( 0, "212", "v 2.1.2" )
+ ROMX_LOAD( "tim 100kg v.2.1.2.u12", 0x0000, 0x0800, CRC(faf5743c) SHA1(310b662e9535878210f8aaab3e2b846fade60642),ROM_BIOS(1))
+ ROM_CONTINUE (0x1000, 0x0800)
+ ROM_CONTINUE (0x0800, 0x0800)
+ ROM_CONTINUE (0x1800, 0x0800)
+ ROM_SYSTEM_BIOS( 1, "220", "v 2.2.0" )
+ ROMX_LOAD( "tim 100kg v.2.2.0.u12", 0x0000, 0x0800, CRC(358dbbd3) SHA1(14b7d6ee41b19bedf2f070f5b28b03aaff2cac4f),ROM_BIOS(2))
+ ROM_CONTINUE (0x1000, 0x0800)
+ ROM_CONTINUE (0x0800, 0x0800)
+ ROM_CONTINUE (0x1800, 0x0800)
+ROM_END
+
+/* Driver */
+COMP( 1985, tim100, 0, 0, tim100, tim100, driver_device, 0, "Mihajlo Pupin Institute", "TIM-100", MACHINE_IS_SKELETON)