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author Dirk Best <mail@dirk-best.de>2021-02-03 13:14:36 +0100
committer Dirk Best <mail@dirk-best.de>2021-02-03 13:15:13 +0100
commit23752742b33598301563b4661605be0be3c4d0fe (patch)
tree89a1401a45f28ec1174fc10470cd90ea42001c94
parentb63d020ba6f2b9bcd858ec88f82d198e9f48ebfe (diff)
m3: Rewrite driver
System is now mostly working. The monitor ROM can be used. No software available, so the floppy hookup isn't finished.
-rw-r--r--scripts/target/mame/mess.lua15
-rw-r--r--src/mame/drivers/m3.cpp580
2 files changed, 521 insertions, 74 deletions
diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 9df37b00713..7a0a7f9f389 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -1275,6 +1275,7 @@ function linkProjects_mame_mess(_target, _subtarget)
"kurzweil",
"kyocera",
"leapfrog",
+ "learsiegler",
"lsi",
"luxor",
"magnavox",
@@ -2806,7 +2807,7 @@ files {
MAME_DIR .. "src/mame/drivers/leapfrog_iquest.cpp",
}
-createMESSProjects(_target, _subtarget, "lsi")
+createMESSProjects(_target, _subtarget, "learsiegler")
files {
MAME_DIR .. "src/mame/drivers/adm11.cpp",
MAME_DIR .. "src/mame/drivers/adm23.cpp",
@@ -2814,6 +2815,14 @@ files {
MAME_DIR .. "src/mame/drivers/adm36.cpp",
}
+createMESSProjects(_target, _subtarget, "lsi")
+files {
+ MAME_DIR .. "src/mame/drivers/m3.cpp",
+ MAME_DIR .. "src/mame/drivers/octopus.cpp",
+ MAME_DIR .. "src/mame/machine/octo_kbd.cpp",
+ MAME_DIR .. "src/mame/machine/octo_kbd.h",
+}
+
createMESSProjects(_target, _subtarget, "luxor")
files {
MAME_DIR .. "src/mame/drivers/abc80.cpp",
@@ -4519,7 +4528,6 @@ files {
MAME_DIR .. "src/mame/drivers/lms46.cpp",
MAME_DIR .. "src/mame/drivers/lola8a.cpp",
MAME_DIR .. "src/mame/drivers/lilith.cpp",
- MAME_DIR .. "src/mame/drivers/m3.cpp",
MAME_DIR .. "src/mame/drivers/mccpm.cpp",
MAME_DIR .. "src/mame/drivers/mes.cpp",
MAME_DIR .. "src/mame/drivers/mfabfz.cpp",
@@ -4557,9 +4565,6 @@ files {
MAME_DIR .. "src/mame/drivers/ngen.cpp",
MAME_DIR .. "src/mame/machine/ngen_kb.cpp",
MAME_DIR .. "src/mame/machine/ngen_kb.h",
- MAME_DIR .. "src/mame/drivers/octopus.cpp",
- MAME_DIR .. "src/mame/machine/octo_kbd.cpp",
- MAME_DIR .. "src/mame/machine/octo_kbd.h",
MAME_DIR .. "src/mame/drivers/onyx.cpp",
MAME_DIR .. "src/mame/drivers/p8k.cpp",
MAME_DIR .. "src/mame/drivers/pdt3100.cpp",
diff --git a/src/mame/drivers/m3.cpp b/src/mame/drivers/m3.cpp
index f40db77c10f..e66db6f5350 100644
--- a/src/mame/drivers/m3.cpp
+++ b/src/mame/drivers/m3.cpp
@@ -1,152 +1,594 @@
-// license:BSD-3-Clause
-// copyright-holders:
-/***********************************************************************************************************************************
+// license: BSD-3-Clause
+// copyright-holders: Robbbert, Dirk Best
+/***************************************************************************
-2017-11-20 Skeleton
+ LSI M-THREE
-LSI M3
+ Models:
+ - M-THREE/100 (SA400, 5.25" single sided)
+ - M-THREE/110 (SA410, 5.25" single sided)
+ - M-THREE/150 (SA450, 5.25" double sided)
+ - M-THREE/160 (SA460, 5.25" double sided)
+ - M-THREE/200 (SA800, 8" single sided)
+ - M-THREE/250 (SA850, 8" double sided) [emulated by default]
+ - M-THREE/320 (SA800, 8" single sided, Winchester 5 MB)
+ - M-THREE/325 (SA850, 8" double sided, Winchester 5 MB)
+ - M-THREE/340 (SA800, 8" single sided, Winchester 10 MB)
+ - M-THREE/345 (SA850, 8" double sided, Winchester 10 MB)
-From disassembly: chips: Z80, 6845, 8251, 2x 8255, Z80CTC
+ Hardware:
+ - Z80
+ - 64 KB RAM
+ - Z80 CTC
+ - 2x D8255AC PPI
+ - D8251A
+ - MC6845P CRTC
+ - FD1793 FDC
+ TODO:
+ - Initial PC is currently hacked to f000
+ - Finish floppy hookup
+ - Printer interface
+ - Buzzer
+ - Map the rest of the keys, verify existing keys
-************************************************************************************************************************************/
+ Notes:
+ - No software available
+
+***************************************************************************/
#include "emu.h"
+#include "cpu/mcs48/mcs48.h"
#include "cpu/z80/z80.h"
+#include "machine/z80ctc.h"
+#include "machine/i8255.h"
+#include "machine/i8251.h"
+#include "machine/wd_fdc.h"
#include "video/mc6845.h"
+#include "imagedev/floppy.h"
+#include "bus/rs232/rs232.h"
#include "emupal.h"
#include "screen.h"
+
+namespace {
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
class m3_state : public driver_device
{
public:
m3_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_maincpu(*this, "maincpu")
- , m_p_chargen(*this, "chargen")
- , m_p_videoram(*this, "videoram")
- , m_palette(*this, "palette")
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_ppi(*this, "ppi%u", 0U),
+ m_chargen(*this, "chargen"),
+ m_vram(*this, "vram"),
+ m_palette(*this, "palette"),
+ m_fdc(*this, "fdc"),
+ m_floppy(*this, "fdc:%u", 0),
+ m_kbdmcu(*this, "kbdmcu"),
+ m_special(*this, "SPECIAL"),
+ m_keys(*this, "K%02u", 0U)
{ }
void m3(machine_config &config);
+protected:
+ virtual void machine_start() override;
+ virtual void machine_reset() override;
+
private:
- MC6845_UPDATE_ROW(crtc_update_row);
+ required_device<z80_device> m_maincpu;
+ required_device_array<i8255_device, 2> m_ppi;
+ required_region_ptr<uint8_t> m_chargen;
+ required_shared_ptr<uint8_t> m_vram;
+ required_device<palette_device> m_palette;
+ required_device<fd1793_device> m_fdc;
+ required_device_array<floppy_connector, 2> m_floppy;
+ required_device<i8035_device> m_kbdmcu;
+ required_ioport m_special;
+ required_ioport_array<16> m_keys;
- void io_map(address_map &map);
void mem_map(address_map &map);
+ void io_map(address_map &map);
+ void kbd_mem_map(address_map &map);
+ void kbd_io_map(address_map &map);
- virtual void machine_reset() override;
- required_device<cpu_device> m_maincpu;
- required_region_ptr<u8> m_p_chargen;
- required_shared_ptr<u8> m_p_videoram;
- required_device<palette_device> m_palette;
+ int kbd_t0_r();
+ int kbd_t1_r();
+ uint8_t kbd_p1_r();
+ void kbd_p1_w(uint8_t data);
+ void kbd_p2_w(uint8_t data);
+ void kbd_data_w(uint8_t data);
+ int m_kbd_col;
+ int m_kbd_row;
+ uint8_t m_kbd_data;
+
+ void ppi2_pa_w(uint8_t data);
+ uint8_t ppi2_pb_r();
+
+ MC6845_UPDATE_ROW(crtc_update_row);
};
+
+//**************************************************************************
+// ADDRESS MAPS
+//**************************************************************************
+
void m3_state::mem_map(address_map &map)
{
map(0x0000, 0xe7ff).ram();
- map(0xe800, 0xefff).ram().share("videoram");
- map(0xf000, 0xffff).rom().region("roms", 0);
+ map(0xe800, 0xefff).ram().share("vram");
+ map(0xf000, 0xffff).rom().region("maincpu", 0);
}
void m3_state::io_map(address_map &map)
{
map.global_mask(0xff);
+ map(0x80, 0x83).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
map(0x84, 0x84).rw("crtc", FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w));
map(0x85, 0x85).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
+ map(0x88, 0x8b).rw(m_fdc, FUNC(fd1793_device::read), FUNC(fd1793_device::write));
+ map(0x8c, 0x8d).rw("usart", FUNC(i8251_device::read), FUNC(i8251_device::write));
+ map(0x90, 0x93).rw(m_ppi[0], FUNC(i8255_device::read), FUNC(i8255_device::write));
+ map(0x94, 0x97).rw(m_ppi[1], FUNC(i8255_device::read), FUNC(i8255_device::write));
+}
+
+void m3_state::kbd_mem_map(address_map &map)
+{
+ map(0x000, 0x7ff).rom().mirror(0x800).region("keyboard", 0);
+}
+
+void m3_state::kbd_io_map(address_map &map)
+{
+ map(0x30, 0x30).mirror(0xf).w(FUNC(m3_state::kbd_data_w));
}
+
+//**************************************************************************
+// INPUT DEFINITIONS
+//**************************************************************************
+
+// unmapped keys:
+//
+// INIT PROG F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14
+// INS_CHAR DEL_CHAR INS_LINE DEL_LINE CLEAR_FORE CLEAR_PAGE PROT_MODE BLOCK_MODE
+// SEND_LINE SEND_FORE SEND_PAGE PAGE_FWD UP PAGE_BACK LEFT HOME RIGHT
+// BREAK SET_TAB DOWN CLEAR_TAB
+
static INPUT_PORTS_START( m3 )
+ PORT_START("SPECIAL")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) // or shift-lock?
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LALT) PORT_NAME("Repeat")
+
+ PORT_START("K00")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(": (?)")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b4")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b3")
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("85")
+
+ PORT_START("K01")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0f")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b2")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("86")
+
+ PORT_START("K02")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("05")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("96")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("89")
+
+ PORT_START("K03")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(';') PORT_CHAR('+')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 (?)")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("95")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('@') PORT_CHAR('`')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8a")
+
+ PORT_START("K04")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(':') PORT_CHAR('*')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("11")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("94")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('^') PORT_CHAR('~')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8b")
+
+ PORT_START("K05")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("cd")
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("93")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') // actually ¦
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8c")
+
+ PORT_START("K06")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("92")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR(9)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8d")
+
+ PORT_START("K07")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('_')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("91")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8e")
+
+ PORT_START("K08")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(DEL))
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("90")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("bc")
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("LF") PORT_CHAR('\n')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8f")
+
+ PORT_START("K09")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("cd")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b1")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b0")
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("87")
+
+ PORT_START("K10")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("97")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("88")
+
+ PORT_START("K11")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("03")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b5")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("84")
+
+ PORT_START("K12")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("cd")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b7")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b6")
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("83")
+
+ PORT_START("K13")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR(0xa3) // £
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ea")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b8")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("82")
+
+ PORT_START("K14")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("02")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ba")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b9")
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("81")
+
+ PORT_START("K15")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("c3")
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("bb")
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD))
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("80")
INPUT_PORTS_END
+int m3_state::kbd_t0_r()
+{
+ // outputs 26 alternating 0 and 1 to i/o port 0x00 when active
+ return 1;
+}
+
+int m3_state::kbd_t1_r()
+{
+ // checked right before outputing a new keycode
+ return 0;
+}
+
+uint8_t m3_state::kbd_p1_r()
+{
+ uint8_t data = 0;
+
+ // ---4---- key down
+ // ----3--- repeat
+ // -----2-- control
+ // ------1- shift
+ // -------0 caps-lock, shift-lock?
+
+ data |= BIT(m_keys[m_kbd_col]->read(), m_kbd_row) ? 0x00 : 0x10;
+ data |= m_special->read();
+
+ return data;
+}
+
+void m3_state::kbd_p1_w(uint8_t data)
+{
+ // 765----- row select
+
+ m_kbd_row = data >> 5;
+}
+
+void m3_state::kbd_p2_w(uint8_t data)
+{
+ // 7654---- column select
+ // ----3210 unused
+
+ m_kbd_col = data >> 4;
+}
+
+void m3_state::kbd_data_w(uint8_t data)
+{
+ m_kbd_data = data;
+
+ m_ppi[1]->pc2_w(0);
+ m_ppi[1]->pc2_w(1);
+}
+
+
+//**************************************************************************
+// VIDEO EMULATION
+//**************************************************************************
+
MC6845_UPDATE_ROW( m3_state::crtc_update_row )
{
- rgb_t const *const pens = m_palette->palette()->entry_list_raw();
- uint32_t *p = &bitmap.pix(y);
+ rgb_t const *const pen = m_palette->palette()->entry_list_raw();
for (uint16_t x = 0; x < x_count; x++)
{
- uint8_t inv = (x == cursor_x) ? 0xff : 0;
uint16_t mem = (ma + x) & 0x7ff;
- uint8_t chr = m_p_videoram[mem];
+ uint8_t chr = m_vram[mem];
+ uint8_t gfx = m_chargen[((chr << 4) | ra) & 0x7ff];
+
+ // invert?
if (BIT(chr, 7))
- {
- inv ^= 0xff;
- chr &= 0x7f;
- }
-
- /* get pattern of pixels for that character scanline */
- uint8_t gfx = m_p_chargen[(chr<<4) | ra] ^ inv;
-
- /* Display a scanline of a character (8 pixels) */
- *p++ = pens[BIT(gfx, 6)];
- *p++ = pens[BIT(gfx, 5)];
- *p++ = pens[BIT(gfx, 4)];
- *p++ = pens[BIT(gfx, 3)];
- *p++ = pens[BIT(gfx, 2)];
- *p++ = pens[BIT(gfx, 1)];
- *p++ = pens[BIT(gfx, 0)];
+ gfx ^= 0xff;
+
+ // cursor?
+ if (x == cursor_x)
+ gfx ^= 0xff;
+
+ // draw 7 pixels of the character
+ for (int i = 0; i < 7; i++)
+ bitmap.pix(y, x * 7 + i) = pen[BIT(gfx, 6 - i)];
}
}
-/* F4 Character Displayer */
static const gfx_layout charlayout =
{
- 7, 16, /* 7 x 16 characters */
- 128, /* 128 characters */
- 1, /* 1 bits per pixel */
- { 0 }, /* no bitplanes */
- /* x offsets */
+ 7, 10,
+ 128,
+ 1,
+ { 0 },
{ 1, 2, 3, 4, 5, 6, 7 },
- /* y offsets */
- { 0, 8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8 },
- 8*16 /* every char takes 16 bytes */
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8 },
+ 8*16
};
-static GFXDECODE_START( gfx_f4disp )
- GFXDECODE_ENTRY( "chargen", 0x0000, charlayout, 0, 1 )
+static GFXDECODE_START(chars)
+ GFXDECODE_ENTRY("chargen", 0x0000, charlayout, 0, 1)
GFXDECODE_END
+
+//**************************************************************************
+// MACHINE EMULATION
+//**************************************************************************
+
+void m3_state::ppi2_pa_w(uint8_t data)
+{
+ floppy_image_device *floppy = nullptr;
+
+ // 7------- not used?
+ // -6------ buzzer
+ // --5----- not used?
+ // ---4---- unknown
+ // ----3--- unknown
+ // -----2-- unknown (side?)
+ // ------10 drive select
+
+ logerror("ppi2_pa_w: %02x\n", data);
+
+ if (BIT(data, 0) == 0)
+ floppy = m_floppy[0] ? m_floppy[0]->get_device() : nullptr;
+
+ if (BIT(data, 1) == 0)
+ floppy = m_floppy[1] ? m_floppy[1]->get_device() : nullptr;
+
+ m_fdc->set_floppy(floppy);
+
+ // todo: side select, motor
+}
+
+uint8_t m3_state::ppi2_pb_r()
+{
+ return m_kbd_data;
+}
+
+void m3_state::machine_start()
+{
+ // register for save states
+ save_item(NAME(m_kbd_col));
+ save_item(NAME(m_kbd_row));
+ save_item(NAME(m_kbd_data));
+}
+
void m3_state::machine_reset()
{
m_maincpu->set_pc(0xf000);
}
+
+//**************************************************************************
+// MACHINE DEFINTIONS
+//**************************************************************************
+
+static const z80_daisy_config daisy_chain[] =
+{
+ { "ctc" },
+ { nullptr }
+};
+
+static DEVICE_INPUT_DEFAULTS_START( rs232_defaults )
+ DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_9600 )
+ DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_9600 )
+ DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_7 )
+ DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_EVEN )
+ DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_1 )
+DEVICE_INPUT_DEFAULTS_END
+
+static void m3_floppies(device_slot_interface &device)
+{
+ device.option_add("sa400", FLOPPY_525_SSSD_35T);
+ device.option_add("sa410", FLOPPY_525_SSQD);
+ device.option_add("sa450", FLOPPY_525_DD);
+ device.option_add("sa460", FLOPPY_525_QD);
+ device.option_add("sa800", FLOPPY_8_SSDD);
+ device.option_add("sa850", FLOPPY_8_DSDD);
+}
+
void m3_state::m3(machine_config &config)
{
- Z80(config, m_maincpu, 2'000'000); // no idea of clock.
+ Z80(config, m_maincpu, 2'500'000); // unknown divisor
m_maincpu->set_addrmap(AS_PROGRAM, &m3_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &m3_state::io_map);
+ m_maincpu->set_daisy_config(daisy_chain);
+
+ z80ctc_device& ctc(Z80CTC(config, "ctc", 0)); // unknown clock
+ ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
+ ctc.set_clk<0>(2'457'600 / 2); // unknown clock. this gives the usart 9600 baud by default
+ ctc.zc_callback<0>().set("usart", FUNC(i8251_device::write_txc));
+ ctc.zc_callback<0>().append("usart", FUNC(i8251_device::write_rxc));
- /* video hardware */
+ I8255(config, m_ppi[0]);
+
+ I8255(config, m_ppi[1]);
+ m_ppi[1]->out_pa_callback().set(FUNC(m3_state::ppi2_pa_w));
+ m_ppi[1]->in_pb_callback().set(FUNC(m3_state::ppi2_pb_r));
+
+ i8251_device &usart(I8251(config, "usart", 0)); // unknown clock
+ usart.txd_handler().set("rs232", FUNC(rs232_port_device::write_txd));
+ usart.rts_handler().set("rs232", FUNC(rs232_port_device::write_rts));
+ usart.dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr));
+
+ rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr));
+ rs232.set_option_device_input_defaults("printer", DEVICE_INPUT_DEFAULTS_NAME(rs232_defaults));
+ rs232.rxd_handler().set("usart", FUNC(i8251_device::write_rxd));
+ rs232.dsr_handler().set("usart", FUNC(i8251_device::write_dsr));
+ rs232.cts_handler().set("usart", FUNC(i8251_device::write_cts));
+
+ // video hardware
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER, rgb_t::green()));
- screen.set_refresh_hz(60);
- screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); // not correct
+ screen.set_raw(10'920'000, 707, 0, 560, 309, 0, 240); // unknown clock, hand-tuned to ~50 fps
screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update));
- screen.set_size(640, 480);
- screen.set_visarea(0, 639, 0, 479);
- GFXDECODE(config, "gfxdecode", m_palette, gfx_f4disp);
+
+ GFXDECODE(config, "gfxdecode", m_palette, chars);
+
PALETTE(config, m_palette, palette_device::MONOCHROME);
- /* Devices */
- mc6845_device &crtc(MC6845(config, "crtc", 2'000'000)); // clk unknown
+ mc6845_device &crtc(MC6845(config, "crtc", 10'920'000 / 7)); // unknown clock
crtc.set_screen("screen");
crtc.set_show_border_area(false);
crtc.set_char_width(7);
crtc.set_update_row_callback(FUNC(m3_state::crtc_update_row));
+ crtc.out_vsync_callback().set("ctc", FUNC(z80ctc_device::trg2));
+
+ // floppy
+ FD1793(config, m_fdc, 2'000'000); // unknown clock
+ m_fdc->drq_wr_callback().set_inputline(m_maincpu, INPUT_LINE_NMI);
+ FLOPPY_CONNECTOR(config, "fdc:0", m3_floppies, "sa850", floppy_image_device::default_floppy_formats);
+ FLOPPY_CONNECTOR(config, "fdc:1", m3_floppies, "sa850", floppy_image_device::default_floppy_formats);
+
+ // keyboard
+ I8035(config, m_kbdmcu, 3'000'000); // unknown clock
+ m_kbdmcu->set_addrmap(AS_PROGRAM, &m3_state::kbd_mem_map);
+ m_kbdmcu->set_addrmap(AS_IO, &m3_state::kbd_io_map);
+ m_kbdmcu->p1_in_cb().set(FUNC(m3_state::kbd_p1_r));
+ m_kbdmcu->p1_out_cb().set(FUNC(m3_state::kbd_p1_w));
+ m_kbdmcu->p2_out_cb().set(FUNC(m3_state::kbd_p2_w));
+ m_kbdmcu->t0_in_cb().set(FUNC(m3_state::kbd_t0_r));
+ m_kbdmcu->t1_in_cb().set(FUNC(m3_state::kbd_t1_r));
}
+
+//**************************************************************************
+// ROM DEFINITIONS
+//**************************************************************************
+
ROM_START( m3 )
- ROM_REGION( 0x3000, "roms", 0 )
- ROM_LOAD( "bootstrap_prom,034.bin", 0x0000, 0x0800, CRC(7fdb051e) SHA1(7aa24d4f44b6a0c8f7f647667f4997432c186cac) )
- ROM_LOAD( "monitor_prom_v1.7_2015-12-09.bin", 0x0800, 0x0800, CRC(85b5c541) SHA1(92b4ec87a4d0d8c0f7b49eec0c5457f237de0a01) )
+ ROM_REGION(0x1000, "maincpu", 0)
+ ROM_LOAD("bootstrap_prom_034.bin", 0x0000, 0x0800, CRC(7fdb051e) SHA1(7aa24d4f44b6a0c8f7f647667f4997432c186cac))
+
+ // Homebrew Monitor ROM, written by Steve Hunt. Uses the socket of the HDD ROM.
+ ROM_LOAD("monitor_prom_v17_2015-12-09.bin", 0x0800, 0x0800, CRC(85b5c541) SHA1(92b4ec87a4d0d8c0f7b49eec0c5457f237de0a01))
- ROM_REGION( 0x0800, "chargen", 0 ) // bit 7 set on every byte - bad?
- ROM_LOAD( "6845crt_font_prom,033.bin", 0x0000, 0x0800, CRC(cc29f664) SHA1(4197530d9455d665fd4773f95bb6394f6b056dec) )
+ ROM_REGION(0x800, "chargen", 0)
+ ROM_LOAD("6845crt_font_prom_033.bin", 0x000, 0x800, CRC(cc29f664) SHA1(4197530d9455d665fd4773f95bb6394f6b056dec))
- ROM_REGION( 0x0800, "keyboard", 0 )
- ROM_LOAD( "keyboard_prom,032.bin", 0x0000, 0x0800, CRC(21548355) SHA1(ee4ce4af9c78474263dd58e0f19e79e5b00926fa) )
+ ROM_REGION(0x800, "keyboard", 0)
+ ROM_LOAD("keyboard_prom_032.bin", 0x000, 0x800, CRC(21548355) SHA1(ee4ce4af9c78474263dd58e0f19e79e5b00926fa))
ROM_END
-COMP( 19??, m3, 0, 0, m3, m3, m3_state, empty_init, "LSI", "M3", MACHINE_IS_SKELETON )
+
+} // anonymous namespace
+
+
+//**************************************************************************
+// SYSTEM DRIVERS
+//**************************************************************************
+
+// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
+COMP( 1982, m3, 0, 0, m3, m3, m3_state, empty_init, "LSI", "M-THREE", MACHINE_NOT_WORKING | MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )