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Diffstat (limited to 'src/mess/machine/vtech2.c')
-rw-r--r--src/mess/machine/vtech2.c489
1 files changed, 0 insertions, 489 deletions
diff --git a/src/mess/machine/vtech2.c b/src/mess/machine/vtech2.c
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--- a/src/mess/machine/vtech2.c
+++ /dev/null
@@ -1,489 +0,0 @@
-// license:GPL-2.0+
-// copyright-holders:Juergen Buchmueller
-/***************************************************************************
- vtech2.c
-
- machine driver
- Juergen Buchmueller <pullmoll@t-online.de> MESS driver, Jan 2000
- Davide Moretti <dave@rimini.com> ROM dump and hardware description
-
- TODO:
- Add loading images from WAV files.
- Printer and RS232 support.
- Check if the FDC is really the same as in the
- Laser 210/310 (aka VZ200/300) series.
-
-****************************************************************************/
-
-#include "emu.h"
-#include "includes/vtech2.h"
-#include "imagedev/flopdrv.h"
-#include "imagedev/cassette.h"
-#include "sound/speaker.h"
-
-/* public */
-
-/* static */
-
-#define TRKSIZE_VZ 0x9a0 /* arbitrary (actually from analyzing format) */
-
-static const UINT8 laser_fdc_wrprot[2] = {0x80, 0x80};
-
-/* wrappers for bank #1 to #4 */
-WRITE8_MEMBER(vtech2_state::mwa_bank1 ) { mwa_bank(0,offset,data); }
-WRITE8_MEMBER(vtech2_state::mwa_bank2 ) { mwa_bank(1,offset,data); }
-WRITE8_MEMBER(vtech2_state::mwa_bank3 ) { mwa_bank(2,offset,data); }
-WRITE8_MEMBER(vtech2_state::mwa_bank4 ) { mwa_bank(3,offset,data); }
-
-/* wrappers for bank #1 to #4 */
-READ8_MEMBER(vtech2_state::mra_bank1 ) { return mra_bank(0,offset); }
-READ8_MEMBER(vtech2_state::mra_bank2 ) { return mra_bank(1,offset); }
-READ8_MEMBER(vtech2_state::mra_bank3 ) { return mra_bank(2,offset); }
-READ8_MEMBER(vtech2_state::mra_bank4 ) { return mra_bank(3,offset); }
-
-/* read banked memory (plain ROM/RAM) */
-static const char *const mra_bank_hard[4] =
-{
- "bank1", /* mapped in 0000-3fff */
- "bank2", /* mapped in 4000-7fff */
- "bank3", /* mapped in 8000-bfff */
- "bank4" /* mapped in c000-ffff */
-};
-
-/* write banked memory (plain ROM/RAM) */
-static const char *const mwa_bank_hard[4] =
-{
- "bank1", /* mapped in 0000-3fff */
- "bank2", /* mapped in 4000-7fff */
- "bank3", /* mapped in 8000-bfff */
- "bank4" /* mapped in c000-ffff */
-};
-
-DRIVER_INIT_MEMBER(vtech2_state,laser)
-{
- UINT8 *gfx = memregion("gfx2")->base();
- int i;
-
- m_laser_track_x2[0] = m_laser_track_x2[1] = 80;
- m_laser_fdc_bits = 8;
- m_laser_drive = -1;
-
- for (i = 0; i < 256; i++)
- gfx[i] = i;
-
- m_laser_latch = -1;
- m_mem = memregion("maincpu")->base();
-
- // check ROM expansion
- std::string region_tag;
- m_cart_rom = memregion(region_tag.assign(m_cart->tag()).append(GENERIC_ROM_REGION_TAG).c_str());
-
- for (i = 0; i < ARRAY_LENGTH(m_laser_bank); i++)
- m_laser_bank[i] = -1;
-}
-
-
-
-void vtech2_state::laser_machine_init(int bank_mask, int video_mask)
-{
- m_laser_bank_mask = bank_mask;
- m_laser_video_bank = video_mask;
- m_videoram = m_mem + m_laser_video_bank * 0x04000;
- logerror("laser_machine_init(): bank mask $%04X, video %d [$%05X]\n", m_laser_bank_mask, m_laser_video_bank, m_laser_video_bank * 0x04000);
-
- for (int i = 0; i < ARRAY_LENGTH(m_laser_bank); i++)
- laser_bank_select_w(m_maincpu->space(AS_PROGRAM), i, 0);
-}
-
-void vtech2_state::machine_reset()
-{
- /* banks 0 to 3 only, optional ROM extension */
- laser_machine_init(0x00f, 3);
-}
-
-MACHINE_RESET_MEMBER(vtech2_state,laser500)
-{
- /* banks 0 to 2, and 4-7 only, optional ROM extension */
- laser_machine_init(0x0f7, 7);
-}
-
-MACHINE_RESET_MEMBER(vtech2_state,laser700)
-{
- /* all banks except #3 */
- laser_machine_init(0xff7, 7);
-}
-
-
-WRITE8_MEMBER(vtech2_state::laser_bank_select_w)
-{
- static const char *const bank_name[16] = {
- "ROM lo","ROM hi","MM I/O","Video RAM lo",
- "RAM #0","RAM #1","RAM #2","RAM #3",
- "RAM #4","RAM #5","RAM #6","RAM #7/Video RAM hi",
- "ext ROM #0","ext ROM #1","ext ROM #2","ext ROM #3"
- };
- char bank[10];
- offset %= 4;
- data &= 15;
-
- if( data != m_laser_bank[offset] )
- {
- m_laser_bank[offset] = data;
- logerror("select bank #%d $%02X [$%05X] %s\n", offset+1, data, 0x4000 * (data & 15), bank_name[data]);
-
- /* memory mapped I/O bank selected? */
- if (data == 2)
- {
- static read8_delegate mra_bank_soft[] =
- {
- read8_delegate(FUNC(vtech2_state::mra_bank1), this),
- read8_delegate(FUNC(vtech2_state::mra_bank2), this),
- read8_delegate(FUNC(vtech2_state::mra_bank3), this),
- read8_delegate(FUNC(vtech2_state::mra_bank4), this),
- };
-
- static write8_delegate mwa_bank_soft[] =
- {
- write8_delegate(FUNC(vtech2_state::mwa_bank1), this),
- write8_delegate(FUNC(vtech2_state::mwa_bank2), this),
- write8_delegate(FUNC(vtech2_state::mwa_bank3), this),
- write8_delegate(FUNC(vtech2_state::mwa_bank4), this),
- };
-
- m_maincpu->space(AS_PROGRAM).install_readwrite_handler(offset * 0x4000, offset * 0x4000 + 0x3fff, mra_bank_soft[offset], mwa_bank_soft[offset]);
- }
- else
- {
- sprintf(bank, "bank%d", offset + 1);
- if (data >= 12 && m_cart_rom && (m_cart_rom->bytes() > (data % 12) * 0x4000)) // Expansion ROM banks
- {
- membank(bank)->set_base(m_cart_rom->base()+ (data % 12) * 0x4000);
- m_maincpu->space(AS_PROGRAM).install_read_bank(offset * 0x4000, offset * 0x4000 + 0x3fff, mra_bank_hard[offset]);
- m_maincpu->space(AS_PROGRAM).install_write_bank(offset * 0x4000, offset * 0x4000 + 0x3fff, mwa_bank_hard[offset]);
- }
- else if (data < 12 && (m_laser_bank_mask & (1 << data))) // ROM/RAM banks
- {
- // video RAM bank selected?
- if (data == m_laser_video_bank)
- logerror("select bank #%d VIDEO!\n", offset + 1);
-
- membank(bank)->set_base(&m_mem[0x4000 * m_laser_bank[offset]]);
- m_maincpu->space(AS_PROGRAM).install_read_bank(offset * 0x4000, offset * 0x4000 + 0x3fff, mra_bank_hard[offset]);
- m_maincpu->space(AS_PROGRAM).install_write_bank(offset * 0x4000, offset * 0x4000 + 0x3fff, mwa_bank_hard[offset]);
- }
- else
- {
- logerror("select bank #%d MASKED!\n", offset + 1);
- m_maincpu->space(AS_PROGRAM).nop_readwrite(offset * 0x4000, offset * 0x4000 + 0x3fff);
- }
- }
-
- }
-}
-
-/*************************************************
- * memory mapped I/O read
- * bit function
- * 7 not assigned
- * 6 column 6
- * 5 column 5
- * 4 column 4
- * 3 column 3
- * 2 column 2
- * 1 column 1
- * 0 column 0
- ************************************************/
-int vtech2_state::mra_bank(int bank, int offs)
-{
- UINT8 data = 0x7f;
-
- /* Laser 500/700 only: keyboard rows A through D */
- if( (offs & 0x00ff) == 0x00ff )
- {
- if( (offs & 0x0300) == 0x0000 ) /* keyboard row A */
- {
- if( ioport("ROWA")->read() != m_row_a )
- {
- m_row_a = ioport("ROWA")->read();
- data &= m_row_a;
- }
- }
- if( (offs & 0x0300) == 0x0100 ) /* keyboard row B */
- {
- if( ioport("ROWB")->read() != m_row_b )
- {
- m_row_b = ioport("ROWB")->read();
- data &= m_row_b;
- }
- }
- if( (offs & 0x0300) == 0x0200 ) /* keyboard row C */
- {
- if( ioport("ROWC")->read() != m_row_c )
- {
- m_row_c = ioport("ROWC")->read();
- data &= m_row_c;
- }
- }
- if( (offs & 0x0300) == 0x0300 ) /* keyboard row D */
- {
- if( ioport("ROWD")->read() != m_row_d )
- {
- m_row_d = ioport("ROWD")->read();
- data &= m_row_d;
- }
- }
- }
- else
- {
- /* All Lasers keyboard rows 0 through 7 */
- if( !(offs & 0x01) )
- data &= ioport("ROW0")->read();
- if( !(offs & 0x02) )
- data &= ioport("ROW1")->read();
- if( !(offs & 0x04) )
- data &= ioport("ROW2")->read();
- if( !(offs & 0x08) )
- data &= ioport("ROW3")->read();
- if( !(offs & 0x10) )
- data &= ioport("ROW4")->read();
- if( !(offs & 0x20) )
- data &= ioport("ROW5")->read();
- if( !(offs & 0x40) )
- data &= ioport("ROW6")->read();
- if( !(offs & 0x80) )
- data &= ioport("ROW7")->read();
- }
-
- /* BIT 7 - tape input */
-
- data |= (m_cassette->input() > +0.02) ? 0x80 : 0;
-
- return data;
-}
-
-/*************************************************
- * memory mapped I/O write
- * bit function
- * 7-6 not assigned
- * 5 speaker B ???
- * 4 ???
- * 3 mode: 1 graphics, 0 text
- * 2 cassette out (MSB)
- * 1 cassette out (LSB)
- * 0 speaker A
- ************************************************/
-void vtech2_state::mwa_bank(int bank, int offs, int data)
-{
- offs += 0x4000 * m_laser_bank[bank];
- switch (m_laser_bank[bank])
- {
- case 0: /* ROM lower 16K */
- case 1: /* ROM upper 16K */
- logerror("bank #%d write to ROM [$%05X] $%02X\n", bank+1, offs, data);
- break;
- case 2: /* memory mapped output */
- if (data != m_laser_latch)
- {
- logerror("bank #%d write to I/O [$%05X] $%02X\n", bank+1, offs, data);
- /* Toggle between graphics and text modes? */
- if ((data ^ m_laser_latch) & 0x01)
- m_speaker->level_w(data & 1);
- m_laser_latch = data;
- }
- m_cassette->output( BIT(data, 2) ? -1.0 : +1.0);
- break;
- case 12: /* ext. ROM #1 */
- case 13: /* ext. ROM #2 */
- case 14: /* ext. ROM #3 */
- case 15: /* ext. ROM #4 */
- logerror("bank #%d write to ROM [$%05X] $%02X\n", bank+1, offs, data);
- break;
- default: /* RAM */
- if( m_laser_bank[bank] == m_laser_video_bank && m_mem[offs] != data )
- {
- logerror("bank #%d write to videoram [$%05X] $%02X\n", bank+1, offs, data);
- }
- m_mem[offs] = data;
- break;
- }
-}
-
-
-device_t *vtech2_state::laser_file()
-{
- return machine().device(m_laser_drive ? FLOPPY_1 : FLOPPY_0);
-}
-
-void vtech2_state::laser_get_track()
-{
- sprintf(m_laser_frame_message, "#%d get track %02d", m_laser_drive, m_laser_track_x2[m_laser_drive]/2);
- m_laser_frame_time = 30;
- /* drive selected or and image file ok? */
- if( m_laser_drive >= 0 && laser_file() != NULL )
- {
- int size, offs;
- device_image_interface *image = dynamic_cast<device_image_interface *>(laser_file());
- size = TRKSIZE_VZ;
- offs = TRKSIZE_VZ * m_laser_track_x2[m_laser_drive]/2;
- image->fseek(offs, SEEK_SET);
- size = image->fread(m_laser_fdc_data, size);
- logerror("get track @$%05x $%04x bytes\n", offs, size);
- }
- m_laser_fdc_offs = 0;
- m_laser_fdc_write = 0;
-}
-
-void vtech2_state::laser_put_track()
-{
- device_image_interface *image = dynamic_cast<device_image_interface *>(laser_file());
- /* drive selected and image file ok? */
- if( m_laser_drive >= 0 && laser_file() != NULL )
- {
- int size, offs;
- offs = TRKSIZE_VZ * m_laser_track_x2[m_laser_drive]/2;
- image->fseek(offs + m_laser_fdc_start, SEEK_SET);
- size = image->fwrite(&m_laser_fdc_data[m_laser_fdc_start], m_laser_fdc_write);
- logerror("put track @$%05X+$%X $%04X/$%04X bytes\n", offs, m_laser_fdc_start, size, m_laser_fdc_write);
- }
-}
-
-#define PHI0(n) (((n)>>0)&1)
-#define PHI1(n) (((n)>>1)&1)
-#define PHI2(n) (((n)>>2)&1)
-#define PHI3(n) (((n)>>3)&1)
-
-READ8_MEMBER(vtech2_state::laser_fdc_r)
-{
- int data = 0xff;
- switch( offset )
- {
- case 1: /* data (read-only) */
- if( m_laser_fdc_bits > 0 )
- {
- if( m_laser_fdc_status & 0x80 )
- m_laser_fdc_bits--;
- data = (m_laser_data >> m_laser_fdc_bits) & 0xff;
-#if 0
- logerror("laser_fdc_r bits %d%d%d%d%d%d%d%d\n",
- (data>>7)&1,(data>>6)&1,(data>>5)&1,(data>>4)&1,
- (data>>3)&1,(data>>2)&1,(data>>1)&1,(data>>0)&1 );
-#endif
- }
- if( m_laser_fdc_bits == 0 )
- {
- m_laser_data = m_laser_fdc_data[m_laser_fdc_offs];
- logerror("laser_fdc_r %d : data ($%04X) $%02X\n", offset, m_laser_fdc_offs, m_laser_data);
- if( m_laser_fdc_status & 0x80 )
- {
- m_laser_fdc_bits = 8;
- m_laser_fdc_offs = (m_laser_fdc_offs + 1) % TRKSIZE_FM;
- }
- m_laser_fdc_status &= ~0x80;
- }
- break;
- case 2: /* polling (read-only) */
- /* fake */
- if( m_laser_drive >= 0 )
- m_laser_fdc_status |= 0x80;
- data = m_laser_fdc_status;
- break;
- case 3: /* write protect status (read-only) */
- if( m_laser_drive >= 0 )
- data = laser_fdc_wrprot[m_laser_drive];
- logerror("laser_fdc_r %d : write_protect $%02X\n", offset, data);
- break;
- }
- return data;
-}
-
-WRITE8_MEMBER(vtech2_state::laser_fdc_w)
-{
- int drive;
-
- switch( offset )
- {
- case 0: /* latch (write-only) */
- drive = (data & 0x10) ? 0 : (data & 0x80) ? 1 : -1;
- if( drive != m_laser_drive )
- {
- m_laser_drive = drive;
- if( m_laser_drive >= 0 )
- laser_get_track();
- }
- if( m_laser_drive >= 0 )
- {
- if( (PHI0(data) && !(PHI1(data) || PHI2(data) || PHI3(data)) && PHI1(m_laser_fdc_latch)) ||
- (PHI1(data) && !(PHI0(data) || PHI2(data) || PHI3(data)) && PHI2(m_laser_fdc_latch)) ||
- (PHI2(data) && !(PHI0(data) || PHI1(data) || PHI3(data)) && PHI3(m_laser_fdc_latch)) ||
- (PHI3(data) && !(PHI0(data) || PHI1(data) || PHI2(data)) && PHI0(m_laser_fdc_latch)) )
- {
- if( m_laser_track_x2[m_laser_drive] > 0 )
- m_laser_track_x2[m_laser_drive]--;
- logerror("laser_fdc_w(%d) $%02X drive %d: stepout track #%2d.%d\n", offset, data, m_laser_drive, m_laser_track_x2[m_laser_drive]/2,5*(m_laser_track_x2[m_laser_drive]&1));
- if( (m_laser_track_x2[m_laser_drive] & 1) == 0 )
- laser_get_track();
- }
- else
- if( (PHI0(data) && !(PHI1(data) || PHI2(data) || PHI3(data)) && PHI3(m_laser_fdc_latch)) ||
- (PHI1(data) && !(PHI0(data) || PHI2(data) || PHI3(data)) && PHI0(m_laser_fdc_latch)) ||
- (PHI2(data) && !(PHI0(data) || PHI1(data) || PHI3(data)) && PHI1(m_laser_fdc_latch)) ||
- (PHI3(data) && !(PHI0(data) || PHI1(data) || PHI2(data)) && PHI2(m_laser_fdc_latch)) )
- {
- if( m_laser_track_x2[m_laser_drive] < 2*40 )
- m_laser_track_x2[m_laser_drive]++;
- logerror("laser_fdc_w(%d) $%02X drive %d: stepin track #%2d.%d\n", offset, data, m_laser_drive, m_laser_track_x2[m_laser_drive]/2,5*(m_laser_track_x2[m_laser_drive]&1));
- if( (m_laser_track_x2[m_laser_drive] & 1) == 0 )
- laser_get_track();
- }
- if( (data & 0x40) == 0 )
- {
- m_laser_data <<= 1;
- if( (m_laser_fdc_latch ^ data) & 0x20 )
- m_laser_data |= 1;
- if( (m_laser_fdc_edge ^= 1) == 0 )
- {
- if( --m_laser_fdc_bits == 0 )
- {
- UINT8 value = 0;
- m_laser_data &= 0xffff;
- if( m_laser_data & 0x4000 ) value |= 0x80;
- if( m_laser_data & 0x1000 ) value |= 0x40;
- if( m_laser_data & 0x0400 ) value |= 0x20;
- if( m_laser_data & 0x0100 ) value |= 0x10;
- if( m_laser_data & 0x0040 ) value |= 0x08;
- if( m_laser_data & 0x0010 ) value |= 0x04;
- if( m_laser_data & 0x0004 ) value |= 0x02;
- if( m_laser_data & 0x0001 ) value |= 0x01;
- logerror("laser_fdc_w(%d) data($%04X) $%02X <- $%02X ($%04X)\n", offset, m_laser_fdc_offs, m_laser_fdc_data[m_laser_fdc_offs], value, m_laser_data);
- m_laser_fdc_data[m_laser_fdc_offs] = value;
- m_laser_fdc_offs = (m_laser_fdc_offs + 1) % TRKSIZE_FM;
- m_laser_fdc_write++;
- m_laser_fdc_bits = 8;
- }
- }
- }
- /* change of write signal? */
- if( (m_laser_fdc_latch ^ data) & 0x40 )
- {
- /* falling edge? */
- if ( m_laser_fdc_latch & 0x40 )
- {
- sprintf(m_laser_frame_message, "#%d put track %02d", m_laser_drive, m_laser_track_x2[m_laser_drive]/2);
- m_laser_frame_time = 30;
- m_laser_fdc_start = m_laser_fdc_offs;
- m_laser_fdc_edge = 0;
- }
- else
- {
- /* data written to track before? */
- if( m_laser_fdc_write )
- laser_put_track();
- }
- m_laser_fdc_bits = 8;
- m_laser_fdc_write = 0;
- }
- }
- m_laser_fdc_latch = data;
- break;
- }
-}