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(nw) split binbug into 3 sources.

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This commit is contained in:
Robbbert 2019-07-22 01:22:40 +10:00
parent f2ae7d8207
commit 65054fc4f1
7 changed files with 593 additions and 391 deletions
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2
scripts/src/bus.lua
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@ -1676,6 +1676,8 @@ if (BUSES["S100"]~=null) then
files {
MAME_DIR .. "src/devices/bus/s100/s100.cpp",
MAME_DIR .. "src/devices/bus/s100/s100.h",
MAME_DIR .. "src/devices/bus/s100/dg640.cpp",
MAME_DIR .. "src/devices/bus/s100/dg640.h",
MAME_DIR .. "src/devices/bus/s100/dj2db.cpp",
MAME_DIR .. "src/devices/bus/s100/dj2db.h",
MAME_DIR .. "src/devices/bus/s100/djdma.cpp",

1
scripts/target/mame/mess.lua
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@ -3893,6 +3893,7 @@ files {
MAME_DIR .. "src/mame/drivers/d6800.cpp",
MAME_DIR .. "src/mame/drivers/d6809.cpp",
MAME_DIR .. "src/mame/drivers/daruma.cpp",
MAME_DIR .. "src/mame/drivers/dg680.cpp",
MAME_DIR .. "src/mame/drivers/diablo1300.cpp",
MAME_DIR .. "src/mame/drivers/didact.cpp",
MAME_DIR .. "src/mame/drivers/digel804.cpp",

172
src/devices/bus/s100/dg640.cpp Normal file
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@ -0,0 +1,172 @@
// license:BSD-3-Clause
// copyright-holders:Robbbert
/***************************************************************************
David Griffiths DG640 board.
It was sold by Applied Technology. It uses a MCM6574 as a character generator.
The DG640 also supports blinking, reverse-video, and LORES graphics.
It is a S100 card, also known as ETI-640.
****************************************************************************/
#include "emu.h"
#include "dg640.h"
#include "emupal.h"
#include "screen.h"
DEFINE_DEVICE_TYPE_PRIVATE(S100_DG640, device_s100_card_interface, dg640_device, "dg640", "S100_DG640")
dg640_device::dg640_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, S100_DG640, tag, owner, clock)
, device_s100_card_interface(mconfig, *this)
, m_p_chargen(*this, "chargen")
{}
void dg640_device::device_start()
{
m_p_videoram = make_unique_clear<u8[]>(0x400);
save_pointer(NAME(m_p_videoram), 0x400);
m_p_attribram = make_unique_clear<u8[]>(0x400);
save_pointer(NAME(m_p_attribram), 0x400);
}
uint32_t dg640_device::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
// attributes bit 0 = flash, bit 1 = lores. Also bit 7 of the character = reverse-video (text only).
uint8_t y,ra,chr,gfx,attr,inv,gfxbit;
uint16_t sy=0,ma=0,x;
bool flash;
m_framecnt++;
for (y = 0; y < 16; y++)
{
for (ra = 0; ra < 16; ra++)
{
uint16_t *p = &bitmap.pix16(sy++);
for (x = ma; x < ma + 64; x++)
{
attr = m_p_attribram[x];
chr = m_p_videoram[x];
flash = BIT(m_framecnt, 4) & BIT(attr, 0);
if (BIT(attr, 1)) // lores gfx - can flash
{
if (flash) chr = 0; // blank part of flashing
gfxbit = (ra & 0x0c)>>1;
/* Display one line of a lores character (8 pixels) */
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
gfxbit++;
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
}
else
{
gfx = 0;
if (!flash)
{
inv = BIT(chr, 7) ? 0xff : 0; // text with bit 7 high is reversed
chr &= 0x7f;
gfx = inv;
// if g,j,p,q,y; lower the descender
if ((chr==0x2c)||(chr==0x3b)||(chr==0x67)||(chr==0x6a)||(chr==0x70)||(chr==0x71)||(chr==0x79))
{
if (ra > 6)
gfx = m_p_chargen[(chr<<4) | (ra-7) ] ^ inv;
}
else
{
if ((ra > 3) & (ra < 13))
gfx = m_p_chargen[(chr<<4) | (ra-4) ] ^ inv;
}
}
/* 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+=64;
}
return 0;
}
u8 dg640_device::s100_smemr_r(offs_t offset)
{
if ((offset & 0xfc00) == 0)
return m_p_videoram[offset & 0x3ff];
else
return m_p_attribram[offset & 0x3ff];
}
void dg640_device::s100_mwrt_w(offs_t offset, u8 data)
{
if ((offset & 0xfc00) == 0)
m_p_videoram[offset & 0x3ff] = data;
else
m_p_attribram[offset & 0x3ff] = data;
}
/* F4 Character Displayer */
static const gfx_layout dg640_charlayout =
{
7, 9, /* 7 x 9 characters */
128, /* 128 characters */
1, /* 1 bits per pixel */
{ 0 }, /* no bitplanes */
/* x offsets */
{ 0, 1, 2, 3, 4, 5, 6 },
/* y offsets */
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8 },
8*16 /* every char takes 16 bytes */
};
static GFXDECODE_START( gfx_dg640 )
GFXDECODE_ENTRY( "chargen", 0x0000, dg640_charlayout, 0, 1 )
GFXDECODE_END
void dg640_device::device_add_mconfig(machine_config &config)
{
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_color(rgb_t::amber());
screen.set_refresh_hz(50);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_screen_update(FUNC(dg640_device::screen_update));
screen.set_size(512, 256);
screen.set_visarea(0, 511, 0, 255);
screen.set_palette("palette");
GFXDECODE(config, "gfxdecode", "palette", gfx_dg640);
PALETTE(config, "palette", palette_device::MONOCHROME);
}
ROM_START(dg640)
ROM_REGION( 0x0800, "chargen", 0 )
ROM_LOAD( "6574.bin", 0x0000, 0x0800, CRC(fd75df4f) SHA1(4d09aae2f933478532b7d3d1a2dee7123d9828ca) )
ROM_FILL(0, 16, 0x00)
ROM_END
const tiny_rom_entry *dg640_device::device_rom_region() const
{
return ROM_NAME(dg640);
}

47
src/devices/bus/s100/dg640.h Normal file
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@ -0,0 +1,47 @@
// license:BSD-3-Clause
// copyright-holders:Robbbert
/**********************************************************************
DG640 Video Card
**********************************************************************/
#ifndef MAME_BUS_S100_DG640_H
#define MAME_BUS_S100_DG640_H
#pragma once
#include "bus/s100/s100.h"
class dg640_device : public device_t, public device_s100_card_interface
{
public:
// construction/destruction
dg640_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_add_mconfig(machine_config &config) override;
virtual const tiny_rom_entry *device_rom_region() const override;
// device_s100_card_interface overrides
virtual u8 s100_smemr_r(offs_t offset) override;
virtual void s100_mwrt_w(offs_t offset, u8 data) override;
private:
u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
// object finders
required_region_ptr<u8> m_p_chargen;
// internal state
std::unique_ptr<u8[]> m_p_videoram;
std::unique_ptr<u8[]> m_p_attribram;
u8 m_framecnt;
};
DECLARE_DEVICE_TYPE(S100_DG640, device_s100_card_interface)
#endif // MAME_BUS_S100_DG640_H

427
src/mame/drivers/binbug.cpp
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@ -2,7 +2,7 @@
// copyright-holders:Robbbert
/***************************************************************************
BINBUG and DG640
BINBUG
2013-01-14 Driver created
@ -18,10 +18,7 @@
S - See and alter registers
BINBUG is an alternate bios to PIPBUG, however it uses its own
video output. Method of output is through a DG640 board (sold by
Applied Technology) which uses a MCM6574 as a character generator.
The DG640 also supports blinking, reverse-video, and LORES graphics.
It is a S100 card, also known as ETI-640.
video output. Method of output is through a DG640 board.
Keyboard input, like PIPBUG, is via a serial device.
The baud rate is 300, 8N1.
@ -38,10 +35,6 @@
- 5.2 ACOS tape system, 1200 baud terminal
Status:
- DG640 is completely emulated, even though BINBUG doesn't use most
of its features.
ToDo:
- Need dumps of 4.4 and 5.2.
@ -50,16 +43,12 @@
#include "emu.h"
#include "bus/rs232/keyboard.h"
#include "cpu/s2650/s2650.h"
#include "machine/z80daisy.h"
#include "cpu/z80/z80.h"
#include "imagedev/cassette.h"
#include "imagedev/snapquik.h"
#include "machine/clock.h"
#include "machine/timer.h"
#include "machine/z80ctc.h"
#include "machine/z80pio.h"
#include "emupal.h"
#include "screen.h"
#include "bus/s100/s100.h"
#include "bus/s100/dg640.h"
#include "speaker.h"
@ -70,50 +59,34 @@ public:
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_cass(*this, "cassette")
, m_pio(*this, "pio")
, m_p_videoram(*this, "videoram")
, m_p_attribram(*this, "attribram")
, m_p_chargen(*this, "chargen")
, m_rs232(*this, "keyboard")
, m_clock(*this, "cass_clock")
, m_s100(*this, "s100")
{ }
void binbug_base(machine_config &config);
void binbug(machine_config &config);
protected:
DECLARE_WRITE_LINE_MEMBER(kansas_w);
TIMER_DEVICE_CALLBACK_MEMBER(kansas_r);
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
// needed by dg680 class
required_device<cpu_device> m_maincpu; // S2650 or Z80
required_device<cassette_image_device> m_cass;
optional_device<z80pio_device> m_pio;
uint8_t m_framecnt;
u8 m_cass_data[4];
bool m_cassold, m_cassinbit, m_cassoutbit;
private:
void binbug_data(address_map &map);
void binbug_mem(address_map &map);
DECLARE_WRITE8_MEMBER(binbug_ctrl_w);
DECLARE_READ8_MEMBER(mem_r);
DECLARE_WRITE8_MEMBER(mem_w);
DECLARE_WRITE_LINE_MEMBER(kansas_w);
DECLARE_READ_LINE_MEMBER(binbug_serial_r);
DECLARE_WRITE_LINE_MEMBER(binbug_serial_w);
DECLARE_QUICKLOAD_LOAD_MEMBER(quickload_cb);
required_shared_ptr<uint8_t> m_p_videoram;
required_shared_ptr<uint8_t> m_p_attribram;
required_region_ptr<u8> m_p_chargen;
optional_device<rs232_port_device> m_rs232;
TIMER_DEVICE_CALLBACK_MEMBER(kansas_r);
public:
u8 m_cass_data[4];
bool m_cassold, m_cassinbit, m_cassoutbit;
void binbug_mem(address_map &map);
required_device<cpu_device> m_maincpu;
required_device<cassette_image_device> m_cass;
required_device<rs232_port_device> m_rs232;
required_device<clock_device> m_clock;
required_device<s100_bus_device> m_s100;
};
WRITE8_MEMBER( binbug_state::binbug_ctrl_w )
{
}
WRITE_LINE_MEMBER( binbug_state::kansas_w )
{
if ((m_cass->get_state() & CASSETTE_MASK_UISTATE) != CASSETTE_RECORD)
@ -156,8 +129,6 @@ TIMER_DEVICE_CALLBACK_MEMBER( binbug_state::kansas_r )
m_cass_data[0] = cass_ws;
m_cassinbit = (m_cass_data[1] < 12) ? 1 : 0;
m_cass_data[1] = 0;
if (m_pio)
m_pio->pb0_w(m_cassinbit);
}
}
@ -171,118 +142,29 @@ WRITE_LINE_MEMBER( binbug_state::binbug_serial_w )
m_cassoutbit = state;
}
READ8_MEMBER( binbug_state::mem_r )
{
return m_s100->smemr_r(offset);
}
WRITE8_MEMBER( binbug_state::mem_w )
{
m_s100->mwrt_w(offset, data);
}
void binbug_state::binbug_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x03ff).rom();
map(0x0400, 0x77ff).ram();
map(0x7800, 0x7bff).ram().share("videoram");
map(0x7c00, 0x7fff).ram().share("attribram");
map(0x7800, 0x7fff).rw(FUNC(binbug_state::mem_r),FUNC(binbug_state::mem_w));
}
void binbug_state::binbug_data(address_map &map)
{
map.unmap_value_high();
map(S2650_CTRL_PORT, S2650_CTRL_PORT).w(FUNC(binbug_state::binbug_ctrl_w));
}
/* Input ports */
static INPUT_PORTS_START( binbug )
INPUT_PORTS_END
uint32_t binbug_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
// attributes bit 0 = flash, bit 1 = lores. Also bit 7 of the character = reverse-video (text only).
uint8_t y,ra,chr,gfx,attr,inv,gfxbit;
uint16_t sy=0,ma=0,x;
bool flash;
m_framecnt++;
for (y = 0; y < 16; y++)
{
for (ra = 0; ra < 16; ra++)
{
uint16_t *p = &bitmap.pix16(sy++);
for (x = ma; x < ma + 64; x++)
{
attr = m_p_attribram[x];
chr = m_p_videoram[x];
flash = BIT(m_framecnt, 4) & BIT(attr, 0);
if (BIT(attr, 1)) // lores gfx - can flash
{
if (flash) chr = 0; // blank part of flashing
gfxbit = (ra & 0x0c)>>1;
/* Display one line of a lores character (8 pixels) */
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
gfxbit++;
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
*p++ = BIT(chr, gfxbit);
}
else
{
gfx = 0;
if (!flash)
{
inv = BIT(chr, 7) ? 0xff : 0; // text with bit 7 high is reversed
chr &= 0x7f;
gfx = inv;
// if g,j,p,q,y; lower the descender
if ((chr==0x2c)||(chr==0x3b)||(chr==0x67)||(chr==0x6a)||(chr==0x70)||(chr==0x71)||(chr==0x79))
{
if (ra > 6)
gfx = m_p_chargen[(chr<<4) | (ra-7) ] ^ inv;
}
else
{
if ((ra > 3) & (ra < 13))
gfx = m_p_chargen[(chr<<4) | (ra-4) ] ^ inv;
}
}
/* 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+=64;
}
return 0;
}
/* F4 Character Displayer */
static const gfx_layout dg640_charlayout =
{
7, 9, /* 7 x 9 characters */
128, /* 128 characters */
1, /* 1 bits per pixel */
{ 0 }, /* no bitplanes */
/* x offsets */
{ 0, 1, 2, 3, 4, 5, 6 },
/* y offsets */
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8 },
8*16 /* every char takes 16 bytes */
};
static GFXDECODE_START( gfx_dg640 )
GFXDECODE_ENTRY( "chargen", 0x0000, dg640_charlayout, 0, 1 )
GFXDECODE_END
QUICKLOAD_LOAD_MEMBER(binbug_state::quickload_cb)
{
@ -356,21 +238,13 @@ static DEVICE_INPUT_DEFAULTS_START( keyboard )
DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_1 )
DEVICE_INPUT_DEFAULTS_END
void binbug_state::binbug_base(machine_config &config)
static void binbug_s100_devices(device_slot_interface &device)
{
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_color(rgb_t::amber());
screen.set_refresh_hz(50);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_screen_update(FUNC(binbug_state::screen_update));
screen.set_size(512, 256);
screen.set_visarea(0, 511, 0, 255);
screen.set_palette("palette");
GFXDECODE(config, "gfxdecode", "palette", gfx_dg640);
PALETTE(config, "palette", palette_device::MONOCHROME);
device.option_add("dg640", S100_DG640);
}
void binbug_state::binbug(machine_config &config)
{
SPEAKER(config, "mono").front_center();
/* Cassette */
@ -381,16 +255,10 @@ void binbug_state::binbug_base(machine_config &config)
CLOCK(config, m_clock, 4'800); // 300 baud x 16(divider) = 4800
m_clock->signal_handler().set(FUNC(binbug_state::kansas_w));
}
void binbug_state::binbug(machine_config &config)
{
binbug_base(config);
/* basic machine hardware */
s2650_device &maincpu(S2650(config, m_maincpu, XTAL(1'000'000)));
maincpu.set_addrmap(AS_PROGRAM, &binbug_state::binbug_mem);
maincpu.set_addrmap(AS_DATA, &binbug_state::binbug_data);
maincpu.sense_handler().set(FUNC(binbug_state::binbug_serial_r));
maincpu.flag_handler().set(FUNC(binbug_state::binbug_serial_w));
@ -399,6 +267,9 @@ void binbug_state::binbug(machine_config &config)
/* quickload */
QUICKLOAD(config, "quickload", "pgm", attotime::from_seconds(1)).set_load_callback(FUNC(binbug_state::quickload_cb), this);
S100_BUS(config, m_s100, 0);
S100_SLOT(config, "s100:1", binbug_s100_devices, "dg640");
}
@ -406,10 +277,6 @@ void binbug_state::binbug(machine_config &config)
ROM_START( binbug )
ROM_REGION( 0x8000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "binbug.rom", 0x0000, 0x0400, CRC(2cb1ac6e) SHA1(a969883fc767484d6b0fa103cfa4b4129b90441b) )
ROM_REGION( 0x0800, "chargen", 0 )
ROM_LOAD( "6574.bin", 0x0000, 0x0800, CRC(fd75df4f) SHA1(4d09aae2f933478532b7d3d1a2dee7123d9828ca) )
ROM_FILL(0, 16, 0x00)
ROM_END
/* Driver */
@ -417,223 +284,3 @@ ROM_END
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1980, binbug, pipbug, 0, binbug, binbug, binbug_state, empty_init, "MicroByte", "BINBUG 3.6", 0 )
/******************************************************************************************************************/
/*
DG680 (ETI-680), using the DGOS-Z80 operating system.
This is a S100 card.
In some ways, this system is the ancestor of the original Microbee.
ROM is typed in from a PDF, therefore marked a bad dump.
No schematic available, most of this is guesswork.
Port 0 is the input from an ascii keyboard.
Port 2 is the cassette interface.
Port 8 controls some kind of memory protection scheme.
The code indicates that B is the page to protect, and
A is the code (0x08 = inhibit; 0x0B = unprotect;
0x0C = enable; 0x0E = protect). There are 256 pages so
each page is 256 bytes.
The clock is controlled by the byte in D80D.
Monitor Commands:
C (compare)*
E (edit)*
F (fill)*
G - Go to address
I - Inhibit CTC
M (move)*
P (clear screen)*
R (read tape)*
S (search)*
T hhmm [ss] - Set the time
W (write tape)*
X - protection status
XC - clear ram
XD - same as X
XE - enable facilities
XF - disable facilities
XP - protect block
XU - unprotect block
Z - go to 0000.
* These commands are identical to the Microbee ones.
ToDo:
- dips
- leds
- need schematic to find out what else is missing
*/
class dg680_state : public binbug_state
{
public:
dg680_state(const machine_config &mconfig, device_type type, const char *tag)
: binbug_state(mconfig, type, tag)
, m_ctc(*this, "ctc")
{ }
void dg680(machine_config &config);
private:
DECLARE_READ8_MEMBER(porta_r);
DECLARE_READ8_MEMBER(portb_r);
DECLARE_WRITE8_MEMBER(portb_w);
DECLARE_READ8_MEMBER(port08_r);
DECLARE_WRITE8_MEMBER(port08_w);
void kbd_put(u8 data);
void dg680_io(address_map &map);
void dg680_mem(address_map &map);
uint8_t m_pio_b;
uint8_t m_term_data;
uint8_t m_protection[0x100];
virtual void machine_reset() override;
required_device<z80ctc_device> m_ctc;
};
void dg680_state::dg680_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0xcfff).ram();
map(0xd000, 0xd7ff).rom();
map(0xd800, 0xefff).ram();
map(0xf000, 0xf3ff).ram().share("videoram");
map(0xf400, 0xf7ff).ram().share("attribram");
}
void dg680_state::dg680_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
map(0x00, 0x03).rw(m_pio, FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt));
map(0x04, 0x07).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
map(0x08, 0x08).rw(FUNC(dg680_state::port08_r), FUNC(dg680_state::port08_w)); //SWP Control and Status
//AM_RANGE(0x09,0x09) parallel input port
// Optional AM9519 Programmable Interrupt Controller (port c = data, port d = control)
//AM_RANGE(0x0c,0x0d) AM_DEVREADWRITE("am9519", am9519_device, read, write)
}
void dg680_state::machine_reset()
{
m_maincpu->set_pc(0xd000);
m_pio_b = 0xFF;
}
// this is a guess there is no information available
static const z80_daisy_config dg680_daisy_chain[] =
{
{ "ctc" },
{ "pio" },
{ 0x00 }
};
/* Input ports */
static INPUT_PORTS_START( dg680 )
INPUT_PORTS_END
void dg680_state::kbd_put(u8 data)
{
if (data == 8)
data = 127; // fix backspace
m_term_data = data;
/* strobe in keyboard data */
m_pio->strobe_a(0);
m_pio->strobe_a(1);
}
READ8_MEMBER( dg680_state::porta_r )
{
uint8_t data = m_term_data;
m_term_data = 0;
return data;
}
READ8_MEMBER( dg680_state::portb_r )
{
return m_pio_b | m_cassinbit;
}
// bit 1 = cassout; bit 2 = motor on
WRITE8_MEMBER( dg680_state::portb_w )
{
if (BIT(m_pio_b ^ data, 2))
m_cass->change_state(BIT(data, 2) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
m_pio_b = data & 0xfe;
m_cassoutbit = BIT(data, 1);
}
READ8_MEMBER( dg680_state::port08_r )
{
uint8_t breg = m_maincpu->state_int(Z80_B);
return m_protection[breg];
}
WRITE8_MEMBER( dg680_state::port08_w )
{
uint8_t breg = m_maincpu->state_int(Z80_B);
m_protection[breg] = data;
}
void dg680_state::dg680(machine_config &config)
{
binbug_base(config);
m_clock->signal_handler().append(m_ctc, FUNC(z80ctc_device::trg2));
m_clock->signal_handler().append(m_ctc, FUNC(z80ctc_device::trg3));
m_cass->set_default_state(CASSETTE_PLAY | CASSETTE_MOTOR_DISABLED | CASSETTE_SPEAKER_ENABLED);
/* basic machine hardware */
z80_device& maincpu(Z80(config, m_maincpu, XTAL(8'000'000) / 4));
maincpu.set_addrmap(AS_PROGRAM, &dg680_state::dg680_mem);
maincpu.set_addrmap(AS_IO, &dg680_state::dg680_io);
maincpu.set_daisy_config(dg680_daisy_chain);
/* Keyboard */
generic_keyboard_device &keyb(GENERIC_KEYBOARD(config, "keyb", 0));
keyb.set_keyboard_callback(FUNC(dg680_state::kbd_put));
/* Devices */
Z80CTC(config, m_ctc, XTAL(8'000'000) / 4);
m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
m_ctc->set_clk<0>(200);
m_ctc->zc_callback<0>().set(m_ctc, FUNC(z80ctc_device::trg1));
Z80PIO(config, m_pio, XTAL(8'000'000) / 4);
m_pio->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
m_pio->in_pa_callback().set(FUNC(dg680_state::porta_r));
// OUT_ARDY - this activates to ask for kbd data but not known if actually used
m_pio->in_pb_callback().set(FUNC(dg680_state::portb_r));
m_pio->out_pb_callback().set(FUNC(dg680_state::portb_w));
}
/* ROM definition */
ROM_START( dg680 )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "dg680.rom", 0xd000, 0x0800, BAD_DUMP CRC(c1aaef6a) SHA1(1508ca8315452edfb984718e795ccbe79a0c0b58) )
ROM_REGION( 0x0800, "chargen", 0 )
ROM_LOAD( "6574.bin", 0x0000, 0x0800, CRC(fd75df4f) SHA1(4d09aae2f933478532b7d3d1a2dee7123d9828ca) )
ROM_REGION( 0x0020, "proms", 0 )
ROM_LOAD( "82s123.bin", 0x0000, 0x0020, NO_DUMP )
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1980, dg680, 0, 0, dg680, dg680, dg680_state, empty_init, "David Griffiths", "DG680 with DGOS-Z80 1.4", MACHINE_NO_SOUND_HW )

331
src/mame/drivers/dg680.cpp Normal file
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@ -0,0 +1,331 @@
// license:BSD-3-Clause
// copyright-holders:Robbbert
/***************************************************************************
DG680
2013-01-14 Driver created
All input must be in uppercase.
DG680 (ETI-680), using the DGOS-Z80 operating system.
This is a S100 card.
In some ways, this system is the ancestor of the original Microbee.
No schematic available, most of this is guesswork.
Port 0 is the input from an ascii keyboard.
Port 2 is the cassette interface.
Port 8 controls some kind of memory protection scheme.
The code indicates that B is the page to protect, and
A is the code (0x08 = inhibit; 0x0B = unprotect;
0x0C = enable; 0x0E = protect). There are 256 pages so
each page is 256 bytes.
The clock is controlled by the byte in D80D.
Monitor Commands:
C (compare)*
E (edit)*
F (fill)*
G - Go to address
I - Inhibit CTC
M (move)*
P (clear screen)*
R (read tape)*
S (search)*
T hhmm [ss] - Set the time
W (write tape)*
X - protection status
XC - clear ram
XD - same as X
XE - enable facilities
XF - disable facilities
XP - protect block
XU - unprotect block
Z - go to 0000.
* These commands are identical to the Microbee ones.
ToDo:
- dips
- leds
- need schematic to find out what else is missing
****************************************************************************/
#include "emu.h"
#include "bus/rs232/keyboard.h"
#include "machine/z80daisy.h"
#include "cpu/z80/z80.h"
#include "imagedev/cassette.h"
#include "machine/clock.h"
#include "machine/timer.h"
#include "machine/z80ctc.h"
#include "machine/z80pio.h"
#include "bus/s100/s100.h"
#include "bus/s100/dg640.h"
#include "speaker.h"
class dg680_state : public driver_device
{
public:
dg680_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_cass(*this, "cassette")
, m_pio(*this, "pio")
, m_ctc(*this, "ctc")
, m_rs232(*this, "keyboard")
, m_clock(*this, "cass_clock")
, m_s100(*this, "s100")
{ }
void dg680(machine_config &config);
private:
DECLARE_READ8_MEMBER(porta_r);
DECLARE_READ8_MEMBER(portb_r);
DECLARE_WRITE8_MEMBER(portb_w);
DECLARE_READ8_MEMBER(port08_r);
DECLARE_WRITE8_MEMBER(port08_w);
DECLARE_WRITE_LINE_MEMBER(kansas_w);
TIMER_DEVICE_CALLBACK_MEMBER(kansas_r);
void kbd_put(u8 data);
void dg680_io(address_map &map);
void dg680_mem(address_map &map);
uint8_t m_pio_b;
uint8_t m_term_data;
uint8_t m_protection[0x100];
virtual void machine_reset() override;
u8 m_cass_data[4];
bool m_cassold, m_cassinbit, m_cassoutbit;
DECLARE_READ8_MEMBER(mem_r);
DECLARE_WRITE8_MEMBER(mem_w);
required_device<cpu_device> m_maincpu;
required_device<cassette_image_device> m_cass;
optional_device<z80pio_device> m_pio;
required_device<z80ctc_device> m_ctc;
optional_device<rs232_port_device> m_rs232;
required_device<clock_device> m_clock;
required_device<s100_bus_device> m_s100;
};
WRITE_LINE_MEMBER( dg680_state::kansas_w )
{
if ((m_cass->get_state() & CASSETTE_MASK_UISTATE) != CASSETTE_RECORD)
return;
u8 twobit = m_cass_data[3] & 15;
if (state)
{
if (twobit == 0)
m_cassold = m_cassoutbit;
if (m_cassold)
m_cass->output(BIT(m_cass_data[3], 0) ? -1.0 : +1.0); // 2400Hz
else
m_cass->output(BIT(m_cass_data[3], 1) ? -1.0 : +1.0); // 1200Hz
m_cass_data[3]++;
}
}
TIMER_DEVICE_CALLBACK_MEMBER( dg680_state::kansas_r )
{
// no tape - set to idle
m_cass_data[1]++;
if (m_cass_data[1] > 32)
{
m_cass_data[1] = 32;
m_cassinbit = 1;
}
if ((m_cass->get_state() & CASSETTE_MASK_UISTATE) != CASSETTE_PLAY)
return;
/* cassette - turn 1200/2400Hz to a bit */
uint8_t cass_ws = (m_cass->input() > +0.04) ? 1 : 0;
if (cass_ws != m_cass_data[0])
{
m_cass_data[0] = cass_ws;
m_cassinbit = (m_cass_data[1] < 12) ? 1 : 0;
m_cass_data[1] = 0;
m_pio->pb0_w(m_cassinbit);
}
}
READ8_MEMBER( dg680_state::mem_r )
{
return m_s100->smemr_r(offset);
}
WRITE8_MEMBER( dg680_state::mem_w )
{
m_s100->mwrt_w(offset, data);
}
void dg680_state::dg680_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0xcfff).ram();
map(0xd000, 0xd7ff).rom();
map(0xd800, 0xefff).ram();
map(0xf000, 0xf7ff).rw(FUNC(dg680_state::mem_r),FUNC(dg680_state::mem_w));
}
void dg680_state::dg680_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
map(0x00, 0x03).rw(m_pio, FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt));
map(0x04, 0x07).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
map(0x08, 0x08).rw(FUNC(dg680_state::port08_r), FUNC(dg680_state::port08_w)); //SWP Control and Status
//AM_RANGE(0x09,0x09) parallel input port
// Optional AM9519 Programmable Interrupt Controller (port c = data, port d = control)
//AM_RANGE(0x0c,0x0d) AM_DEVREADWRITE("am9519", am9519_device, read, write)
}
void dg680_state::machine_reset()
{
m_maincpu->set_pc(0xd000);
m_pio_b = 0xFF;
}
// this is a guess there is no information available
static const z80_daisy_config dg680_daisy_chain[] =
{
{ "ctc" },
{ "pio" },
{ 0x00 }
};
/* Input ports */
static INPUT_PORTS_START( dg680 )
INPUT_PORTS_END
void dg680_state::kbd_put(u8 data)
{
if (data == 8)
data = 127; // fix backspace
m_term_data = data;
/* strobe in keyboard data */
m_pio->strobe_a(0);
m_pio->strobe_a(1);
}
READ8_MEMBER( dg680_state::porta_r )
{
uint8_t data = m_term_data;
m_term_data = 0;
return data;
}
READ8_MEMBER( dg680_state::portb_r )
{
return m_pio_b | m_cassinbit;
}
// bit 1 = cassout; bit 2 = motor on
WRITE8_MEMBER( dg680_state::portb_w )
{
if (BIT(m_pio_b ^ data, 2))
m_cass->change_state(BIT(data, 2) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
m_pio_b = data & 0xfe;
m_cassoutbit = BIT(data, 1);
}
READ8_MEMBER( dg680_state::port08_r )
{
uint8_t breg = m_maincpu->state_int(Z80_B);
return m_protection[breg];
}
WRITE8_MEMBER( dg680_state::port08_w )
{
uint8_t breg = m_maincpu->state_int(Z80_B);
m_protection[breg] = data;
}
static DEVICE_INPUT_DEFAULTS_START( keyboard )
DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_300 )
DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 )
DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_8 )
DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_NONE )
DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_1 )
DEVICE_INPUT_DEFAULTS_END
static void dg680_s100_devices(device_slot_interface &device)
{
device.option_add("dg640", S100_DG640);
}
void dg680_state::dg680(machine_config &config)
{
SPEAKER(config, "mono").front_center();
/* Cassette */
CASSETTE(config, m_cass);
m_cass->set_default_state(CASSETTE_PLAY | CASSETTE_MOTOR_DISABLED | CASSETTE_SPEAKER_ENABLED);
m_cass->add_route(ALL_OUTPUTS, "mono", 0.05);
TIMER(config, "kansas_r").configure_periodic(FUNC(dg680_state::kansas_r), attotime::from_hz(40000));
CLOCK(config, m_clock, 4'800); // 300 baud x 16(divider) = 4800
m_clock->signal_handler().set(FUNC(dg680_state::kansas_w));
m_clock->signal_handler().append(m_ctc, FUNC(z80ctc_device::trg2));
m_clock->signal_handler().append(m_ctc, FUNC(z80ctc_device::trg3));
/* basic machine hardware */
z80_device& maincpu(Z80(config, m_maincpu, XTAL(8'000'000) / 4));
maincpu.set_addrmap(AS_PROGRAM, &dg680_state::dg680_mem);
maincpu.set_addrmap(AS_IO, &dg680_state::dg680_io);
maincpu.set_daisy_config(dg680_daisy_chain);
/* Keyboard */
generic_keyboard_device &keyb(GENERIC_KEYBOARD(config, "keyb", 0));
keyb.set_keyboard_callback(FUNC(dg680_state::kbd_put));
/* Devices */
Z80CTC(config, m_ctc, XTAL(8'000'000) / 4);
m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
m_ctc->set_clk<0>(200);
m_ctc->zc_callback<0>().set(m_ctc, FUNC(z80ctc_device::trg1));
Z80PIO(config, m_pio, XTAL(8'000'000) / 4);
m_pio->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
m_pio->in_pa_callback().set(FUNC(dg680_state::porta_r));
// OUT_ARDY - this activates to ask for kbd data but not known if actually used
m_pio->in_pb_callback().set(FUNC(dg680_state::portb_r));
m_pio->out_pb_callback().set(FUNC(dg680_state::portb_w));
S100_BUS(config, m_s100, 1_MHz_XTAL);
S100_SLOT(config, "s100:1", dg680_s100_devices, "dg640");
}
/* ROM definition */
ROM_START( dg680 )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "dg680.rom", 0xd000, 0x0800, BAD_DUMP CRC(c1aaef6a) SHA1(1508ca8315452edfb984718e795ccbe79a0c0b58) )
ROM_REGION( 0x0020, "proms", 0 )
ROM_LOAD( "82s123.bin", 0x0000, 0x0020, NO_DUMP )
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1980, dg680, 0, 0, dg680, dg680, dg680_state, empty_init, "David Griffiths", "DG680 with DGOS-Z80 1.4", MACHINE_NO_SOUND_HW )

4
src/mame/mame.lst
View File

@ -8884,7 +8884,6 @@ bigstrkba // alt set of 'bigstrkb' with Italian teams
@source:binbug.cpp
binbug //
dg680 //
@source:bingo.cpp
brooklyn //
@ -11620,6 +11619,9 @@ destroyr1 // 030131-030136 1977/10 [6800]
dfruit //
gemcrush
@source:dg680.cpp
dg680 //
@source:dgn_beta.cpp
dgnbeta // Dragon Beta