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/***************************************************************************
Skeleton driver for Applix 1616 computer
See for docs: http;//www.microbee-mspp.org.au
You need to sign up and make an introductory thread.
Then you will be granted permission to visit the repository.
First revealed to the world in December 1986 issue of Electronics Today
International (ETI) an Australian electronics magazine which is now defunct.
The main articles appeared in ETI February/March/April 1987, followed by
other articles in various issues after that.
TODO: everything!
- Serial device Z8530 Z80SCC
- Keyboard is a standard pc keyboard
- Sound is stereo dac-sound, plus an analog output. Details unknown.
- Disk controller WD1772 driven by a Z80
- Cassette interface
****************************************************************************/
#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "video/mc6845.h"
#include "machine/6522via.h"
class applix_state : public driver_device
{
public:
applix_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_crtc(*this, "crtc"),
m_via(*this, "via6522"),
m_base(*this, "base"),
m_expansion(*this, "expansion"){ }
DECLARE_READ16_MEMBER(applix_inputs_r);
DECLARE_WRITE16_MEMBER(applix_index_w);
DECLARE_WRITE16_MEMBER(applix_register_w);
DECLARE_WRITE16_MEMBER(palette_w);
DECLARE_WRITE16_MEMBER(analog_latch_w);
DECLARE_WRITE16_MEMBER(dac_latch_w);
DECLARE_WRITE16_MEMBER(video_latch_w);
DECLARE_READ8_MEMBER(applix_pa_r);
DECLARE_READ8_MEMBER(applix_pb_r);
DECLARE_WRITE8_MEMBER(applix_pa_w);
DECLARE_WRITE8_MEMBER(applix_pb_w);
DECLARE_WRITE_LINE_MEMBER(vsync_w);
UINT8 m_pa;
UINT8 m_pb;
UINT8 m_analog_latch;
UINT8 m_dac_latch;
UINT8 m_video_latch;
UINT8 m_palette_latch[4];
virtual void machine_reset();
virtual void video_start();
virtual void palette_init();
required_device<cpu_device> m_maincpu;
required_device<mc6845_device> m_crtc;
required_device<via6522_device> m_via;
required_shared_ptr<UINT16> m_base;
required_shared_ptr<UINT16> m_expansion;
};
// dac-latch seems to be:
// bit 7 cassette relay, low=on
// bit 6,5,4 sound outputs
// bit 3 cassette LED, low=on
// bit 2,1,0 joystick
WRITE16_MEMBER( applix_state::dac_latch_w )
{//printf("%X ",data);
if (ACCESSING_BITS_0_7)
m_dac_latch = data;
}
WRITE16_MEMBER( applix_state::analog_latch_w )
{//printf("%X ",data);
if (ACCESSING_BITS_0_7)
m_analog_latch = data;
}
//cent = odd, video = even
WRITE16_MEMBER( applix_state::palette_w )
{
offset >>= 4;
if (ACCESSING_BITS_0_7)
{} //centronics
else
m_palette_latch[offset] = (data >> 8) & 15;
}
WRITE16_MEMBER( applix_state::video_latch_w )
{//printf("%X ",data);
if (ACCESSING_BITS_0_7)
m_video_latch = data;
}
WRITE16_MEMBER( applix_state::applix_index_w )
{
if (ACCESSING_BITS_8_15)
m_crtc->address_w( space, offset, data >> 8 );
}
WRITE16_MEMBER( applix_state::applix_register_w )
{
if (ACCESSING_BITS_8_15)
m_crtc->register_w( space, offset, data >> 8 );
}
READ16_MEMBER( applix_state::applix_inputs_r )
{// as far as i can tell:
// bits 4,5,6,7 are SW0,1,2,3
// bits 2,3 joystick in
// bit 1 cassette in
// bit 0 something to do with audio
return ioport("DSW")->read();
// set dips to Off,Off,Off,On for a video test.
}
READ8_MEMBER( applix_state::applix_pa_r )
{
return m_pa;
}
READ8_MEMBER( applix_state::applix_pb_r )
{
return m_pb;
}
WRITE8_MEMBER( applix_state::applix_pa_w )
{
m_pa = data;
}
WRITE8_MEMBER( applix_state::applix_pb_w )
{//printf("%X ",data);
m_pb = data;
}
static ADDRESS_MAP_START(applix_mem, AS_PROGRAM, 16, applix_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xffffff)
AM_RANGE(0x000000, 0x3fffff) AM_RAM AM_SHARE("expansion") // Expansion
AM_RANGE(0x400000, 0x47ffff) AM_RAM AM_MIRROR(0x80000) AM_SHARE("base") // Main ram
AM_RANGE(0x500000, 0x51ffff) AM_ROM AM_REGION("maincpu", 0)
AM_RANGE(0x600000, 0x60007f) AM_WRITE(palette_w)
AM_RANGE(0x600080, 0x6000ff) AM_WRITE(dac_latch_w)
AM_RANGE(0x600100, 0x60017f) AM_WRITE(video_latch_w) //video latch (=border colour, high nybble; video base, low nybble) (odd)
AM_RANGE(0x600180, 0x6001ff) AM_WRITE(analog_latch_w) //analog multiplexer latch (odd)
//AM_RANGE(0x700000, 0x700007) z80-scc (ch b control, ch b data, ch a control, ch a data) on even addresses
AM_RANGE(0x700080, 0x7000ff) AM_READ(applix_inputs_r) //input port (odd)
AM_RANGE(0x700100, 0x70011f) AM_MIRROR(0x60) AM_DEVREADWRITE8("via6522", via6522_device, read, write, 0xff00)
AM_RANGE(0x700180, 0x700181) AM_MIRROR(0x7c) AM_WRITE(applix_index_w)
AM_RANGE(0x700182, 0x700183) AM_MIRROR(0x7c) AM_WRITE(applix_register_w)
//600000, 6FFFFF io ports and latches
//700000, 7FFFFF peripheral chips and devices
//800000, FFC000 optional roms
//FFFFC0, FFFFFF disk controller board
ADDRESS_MAP_END
// io priorities:
// 4 cassette
// 3 scc
// 2 via
/* Input ports */
static INPUT_PORTS_START( applix )
PORT_START("DSW")
PORT_BIT( 0xf, 0, IPT_UNUSED )
PORT_DIPNAME( 0x10, 0x00, "Switch 0") PORT_DIPLOCATION("SW2:1")
PORT_DIPSETTING( 0x10, DEF_STR(Off))
PORT_DIPSETTING( 0x00, DEF_STR(On))
PORT_DIPNAME( 0x20, 0x00, "Switch 1") PORT_DIPLOCATION("SW2:2")
PORT_DIPSETTING( 0x20, DEF_STR(Off))
PORT_DIPSETTING( 0x00, DEF_STR(On))
PORT_DIPNAME( 0x40, 0x00, "Switch 2") PORT_DIPLOCATION("SW2:3")
PORT_DIPSETTING( 0x40, DEF_STR(Off))
PORT_DIPSETTING( 0x00, DEF_STR(On))
PORT_DIPNAME( 0x80, 0x00, "Switch 3") PORT_DIPLOCATION("SW2:4")
PORT_DIPSETTING( 0x80, DEF_STR(Off))
PORT_DIPSETTING( 0x00, DEF_STR(On))
INPUT_PORTS_END
void applix_state::machine_reset()
{
UINT8* ROM = memregion("maincpu")->base();
memcpy(m_expansion, ROM, 8);
m_maincpu->reset();
}
void applix_state::palette_init()
{ // shades need to be verified - the names on the right are from the manual
const UINT8 colors[16*3] = {
0x00, 0x00, 0x00, // 0 Black
0x40, 0x40, 0x40, // 1 Dark Grey
0x00, 0x00, 0x80, // 2 Dark Blue
0x00, 0x00, 0xff, // 3 Mid Blue
0x00, 0x80, 0x00, // 4 Dark Green
0x00, 0xff, 0x00, // 5 Green
0x00, 0xff, 0xff, // 6 Blue Grey
0x00, 0x7f, 0x7f, // 7 Light Blue
0x7f, 0x00, 0x00, // 8 Dark Red
0xff, 0x00, 0x00, // 9 Red
0x7f, 0x00, 0x7f, // 10 Dark Violet
0xff, 0x00, 0xff, // 11 Violet
0x7f, 0x7f, 0x00, // 12 Brown
0xff, 0xff, 0x00, // 13 Yellow
0xbf, 0xbf, 0xbf, // 14 Light Grey
0xff, 0xff, 0xff }; // 15 White
UINT8 r, b, g, i, color_count = 0;
for (i = 0; i < 48; color_count++)
{
r = colors[i++]; g = colors[i++]; b = colors[i++];
palette_set_color(machine(), color_count, MAKE_RGB(r, g, b));
}
}
void applix_state::video_start()
{
}
static MC6845_UPDATE_ROW( applix_update_row )
{
// The display is bitmapped. 2 modes are supported here, 320x200x16 and 640x200x4.
// Need to display a border colour.
// There is a monochrome mode, but no info found as yet.
applix_state *state = device->machine().driver_data<applix_state>();
const rgb_t *palette = palette_entry_list_raw(bitmap.palette());
UINT8 i;
UINT16 chr,x;
UINT32 mem, vidbase = (state->m_video_latch & 15) << 14, *p = &bitmap.pix32(y);
for (x = 0; x < x_count; x++)
{
if (BIT(state->m_pa, 3))
// 640 x 200 x 4of16 mode
{
mem = vidbase + ma + x + (ra<<12);
chr = state->m_base[mem];
for (i = 0; i < 8; i++)
{
*p++ = palette[state->m_palette_latch[chr>>14]];
chr <<= 2;
}
}
else
// 320 x 200 x 16 mode
{
mem = vidbase + ma + x + (ra<<12);
chr = state->m_expansion[mem]; // could be m_base, we dont know yet
for (i = 0; i < 4; i++)
{
*p++ = palette[chr>>12];
*p++ = palette[chr>>12];
chr <<= 4;
}
}
}
}
static MC6845_INTERFACE( applix_crtc )
{
"screen", /* name of screen */
false,
8, /* number of dots per character */
NULL,
applix_update_row, /* handler to display a scanline */
NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DRIVER_LINE_MEMBER(applix_state, vsync_w),
NULL
};
WRITE_LINE_MEMBER( applix_state::vsync_w )
{
m_via->write_ca2(state);
}
static const via6522_interface applix_via =
{
DEVCB_DRIVER_MEMBER(applix_state, applix_pa_r), // in port A
DEVCB_DRIVER_MEMBER(applix_state, applix_pb_r), // in port B
DEVCB_NULL, // in CA1 cent ack
DEVCB_NULL, // in CB1 kbd clk
DEVCB_NULL, // in CA2 vsync
DEVCB_NULL, // in CB2 kdb data
DEVCB_DRIVER_MEMBER(applix_state, applix_pa_w),// out Port A
DEVCB_DRIVER_MEMBER(applix_state, applix_pb_w), // out port B
DEVCB_NULL, // out CA1
DEVCB_NULL, // out CB1
DEVCB_NULL, // out CA2
DEVCB_NULL, // out CB2
DEVCB_CPU_INPUT_LINE("maincpu", M68K_IRQ_2) //IRQ
};
static MACHINE_CONFIG_START( applix, applix_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M68000, 7500000)
MCFG_CPU_PROGRAM_MAP(applix_mem)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(50)
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("crtc", mc6845_device, screen_update)
MCFG_PALETTE_LENGTH(16)
/* Devices */
MCFG_MC6845_ADD("crtc", MC6845, 1875000, applix_crtc) // 6545
MCFG_VIA6522_ADD("via6522", 0, applix_via)
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( applix )
ROM_REGION(0x20000, "maincpu", 0)
ROM_SYSTEM_BIOS(0, "v4.5a", "V4.5a")
ROMX_LOAD( "1616oshv.045", 0x00000, 0x10000, CRC(9dfb3224) SHA1(5223833a357f90b147f25826c01713269fc1945f), ROM_SKIP(1) | ROM_BIOS(1) )
ROMX_LOAD( "1616oslv.045", 0x00001, 0x10000, CRC(951bd441) SHA1(e0a38c8d0d38d84955c1de3f6a7d56ce06b063f6), ROM_SKIP(1) | ROM_BIOS(1) )
ROM_SYSTEM_BIOS(1, "v4.4a", "V4.4a")
ROMX_LOAD( "1616oshv.044", 0x00000, 0x10000, CRC(4a1a90d3) SHA1(4df504bbf6fc5dad76c29e9657bfa556500420a6), ROM_SKIP(1) | ROM_BIOS(2) )
ROMX_LOAD( "1616oslv.044", 0x00001, 0x10000, CRC(ef619994) SHA1(ff16fe9e2c99a1ffc855baf89278a97a2a2e881a), ROM_SKIP(1) | ROM_BIOS(2) )
ROM_REGION(0x10000, "subcpu", 0)
ROM_LOAD( "1616ssdv.022", 0x0000, 0x8000, CRC(6d8e413a) SHA1(fc27d92c34f231345a387b06670f36f8c1705856) )
ROM_REGION(0x20000, "user1", 0)
ROM_LOAD( "1616osv.045", 0x00000, 0x20000, CRC(b9f75432) SHA1(278964e2a02b1fe26ff34f09dc040e03c1d81a6d) )
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP( 1986, applix, 0, 0, applix, applix, driver_device, 0, "Applix Pty Ltd", "Applix 1616", GAME_NOT_WORKING | GAME_NO_SOUND)
|