Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-10-05 08:41:31 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

itt3030: banking experiment, cursor and other cleanups (nw)

Browse Source
This commit is contained in:
cracyc 2016-05-21 22:34:07 -05:00
parent 2b182e1f54
commit f49ad24204
1 changed files with 30 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

98
src/mame/drivers/itt3030.cpp
View File

@ -245,17 +245,11 @@ protected:
// driver_device overrides
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void video_start() override;
public:
DECLARE_READ8_MEMBER(vsync_r);
DECLARE_WRITE8_MEMBER( beep_w );
DECLARE_WRITE8_MEMBER(bank_w);
DECLARE_READ8_MEMBER(bankl_r);
DECLARE_WRITE8_MEMBER(bankl_w);
DECLARE_READ8_MEMBER(bankh_r);
DECLARE_WRITE8_MEMBER(bankh_w);
DECLARE_READ8_MEMBER(kbd_matrix_r);
DECLARE_WRITE8_MEMBER(kbd_matrix_w);
DECLARE_READ8_MEMBER(kbd_port2_r);
@ -269,24 +263,17 @@ public:
DECLARE_WRITE_LINE_MEMBER(fdcirq_w);
DECLARE_WRITE_LINE_MEMBER(fdcdrq_w);
DECLARE_WRITE_LINE_MEMBER(fdchld_w);
DECLARE_PALETTE_INIT(itt3030);
private:
UINT8 m_unk;
UINT8 m_bank;
UINT8 m_kbdrow, m_kbdcol, m_kbdclk, m_kbdread, m_kbdport2;
UINT8 m_kbdclk, m_kbdread, m_kbdport2;
required_device<gfxdecode_device> m_gfxdecode;
required_device<palette_device> m_palette;
floppy_image_device *m_curfloppy;
bool m_fdc_irq, m_fdc_drq, m_fdc_hld;
floppy_connector *m_con1, *m_con2, *m_con3;
bool m_keyskip;
};
void itt3030_state::video_start()
{
m_unk = 0x80;
}
READ8_MEMBER(itt3030_state::vsync_r)
{
UINT8 ret = 0;
@ -306,48 +293,23 @@ READ8_MEMBER(itt3030_state::vsync_r)
WRITE8_MEMBER( itt3030_state::beep_w )
{
m_beep->set_state(data&0x32);
m_beep->set_state(data&1);
}
WRITE8_MEMBER(itt3030_state::bank_w)
{
int bank = 0;
m_bank = data>>4;
int bank = data >> 5;
if (!(m_bank & 1)) // bank 8
if (!(data & 0x10)) // bank 8
{
bank = 8;
}
else
{
bank = m_bank >> 1;
}
// printf("bank_w: new value %02x, m_bank %x, bank %x\n", data, m_bank, bank);
// printf("bank_w: new value %02x, m_bank %x, bank %x\n", data, m_bank, bank);
m_48kbank->set_bank(bank);
}
READ8_MEMBER(itt3030_state::bankl_r)
{
return m_ram->read(offset);
}
WRITE8_MEMBER(itt3030_state::bankl_w)
{
m_ram->write(offset, data);
}
READ8_MEMBER(itt3030_state::bankh_r)
{
return m_ram->read(((m_bank>>1)*0x10000) + offset + 0xc000);
}
WRITE8_MEMBER(itt3030_state::bankh_w)
{
m_ram->write(((m_bank>>1)*0x10000) + offset + 0xc000, data);
}
UINT32 itt3030_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int start = m_crtc->upscroll_offset();
@ -357,7 +319,9 @@ UINT32 itt3030_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap
for(int x = 0; x < 80; x++ )
{
UINT8 code = m_vram[x + vramy*128];
m_gfxdecode->gfx(0)->opaque(bitmap,cliprect, code , 0, 0,0, x*8,y*12);
int invert = code & 0x80 ? 1 : 0;
code &= 0x7f;
m_gfxdecode->gfx(invert)->opaque(bitmap,cliprect, code , 0, 0,0, x*8,y*12);
}
}
@ -467,21 +431,19 @@ WRITE8_MEMBER(itt3030_state::fdc_cmd_w)
}
}
// The lower 48K is switchable among the first 48K of each of 8 64K banks numbered 0-7 or "bank 8" which is the internal ROM and VRAM
// The upper 16K is always the top 16K of the selected bank 0-7, which allows bank/bank copies and such
// The lower 48K is switchable among the first 48K of each of 8 48K banks numbered 0-7 or "bank 8" which is the internal ROM and VRAM
// The upper 16K is always the top 16K of the first bank, F5 can set this to 32K
// Port F6 bits 7-5 select banks 0-7, bit 4 enables bank 8
static ADDRESS_MAP_START( itt3030_map, AS_PROGRAM, 8, itt3030_state )
AM_RANGE(0x0000, 0xbfff) AM_DEVICE("lowerbank", address_map_bank_device, amap8)
AM_RANGE(0xc000, 0xffff) AM_READWRITE(bankh_r, bankh_w)
ADDRESS_MAP_END
static ADDRESS_MAP_START( lower48_map, AS_PROGRAM, 8, itt3030_state )
AM_RANGE(0x00000, 0x7ffff) AM_READWRITE(bankl_r, bankl_w) // pages 0-7
AM_RANGE(0x80000, 0x807ff) AM_ROM AM_REGION("maincpu", 0) // begin "page 8"
AM_RANGE(0x80800, 0x80fff) AM_ROM AM_REGION("maincpu", 0)
AM_RANGE(0x81000, 0x810ff) AM_RAM AM_MIRROR(0x100) // only 256 bytes, but ROM also clears 11xx?
AM_RANGE(0x83000, 0x83fff) AM_RAM AM_SHARE("vram")
AM_RANGE(0x60000, 0x607ff) AM_ROM AM_REGION("maincpu", 0) // begin "page 8"
AM_RANGE(0x60800, 0x60fff) AM_ROM AM_REGION("maincpu", 0)
AM_RANGE(0x61000, 0x610ff) AM_RAM AM_MIRROR(0x100) // only 256 bytes, but ROM also clears 11xx?
AM_RANGE(0x63000, 0x63fff) AM_RAM AM_SHARE("vram")
ADDRESS_MAP_END
static ADDRESS_MAP_START( itt3030_io, AS_IO, 8, itt3030_state )
@ -505,14 +467,11 @@ WRITE8_MEMBER(itt3030_state::kbd_matrix_w)
int rd_masks[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 };
int tmp_read;
m_kbdrow = data & 0x7; // keyboard input line multiplex
m_kbdcol = (data >> 3) & 0xf; // keyboard col select
// printf("matrix_w: %02x (col %d row %d clk %d)\n", data, m_kbdcol, m_kbdrow, (data & 0x80) ? 1 : 0);
if ((data & 0x80) && (!m_kbdclk))
{
tmp_read = m_keyrows[m_kbdcol]->read() & rd_masks[m_kbdrow];
tmp_read = m_keyrows[(data >> 3) & 0xf]->read() & rd_masks[data & 0x7];
m_kbdread = (tmp_read != 0) ? 1 : 0;
}
@ -658,31 +617,27 @@ static const gfx_layout charlayout =
static GFXDECODE_START( itt3030 )
GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 1 )
GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 1 )
GFXDECODE_END
void itt3030_state::machine_start()
{
save_item(NAME(m_unk));
save_item(NAME(m_bank));
save_item(NAME(m_kbdrow));
save_item(NAME(m_kbdcol));
save_item(NAME(m_kbdclk));
save_item(NAME(m_kbdread));
m_48kbank->space(AS_PROGRAM).install_ram(0, m_ram->size() - 16384, m_ram->pointer());
m_maincpu->space(AS_PROGRAM).install_ram(0xc000, 0xffff, m_ram->pointer() + m_ram->size() - 16384);
m_gfxdecode->gfx(1)->set_colorbase(1);
m_kbdclk = 0; // must be initialized here b/c mcs48_reset() causes write of 0xff to all ports
}
void itt3030_state::machine_reset()
{
m_bank = 0;
m_48kbank->set_bank(8);
m_kbdread = 1;
m_kbdrow = m_kbdcol = 0;
m_kbdclk = 1;
m_fdc_irq = m_fdc_drq = m_fdc_hld = 0;
m_curfloppy = nullptr;
m_keyskip = false;
// look up floppies in advance
m_con1 = machine().device<floppy_connector>("fdc:0");
@ -699,6 +654,12 @@ static SLOT_INTERFACE_START( itt3030_floppies )
SLOT_INTERFACE( "525dd", FLOPPY_525_QD )
SLOT_INTERFACE_END
PALETTE_INIT_MEMBER(itt3030_state, itt3030)
{
palette.set_pen_color(0,rgb_t::black);
palette.set_pen_color(1,rgb_t::white);
palette.set_pen_color(2,rgb_t::black);
}
static MACHINE_CONFIG_START( itt3030, itt3030_state )
@ -725,7 +686,7 @@ static MACHINE_CONFIG_START( itt3030, itt3030_state )
MCFG_ADDRESS_MAP_BANK_ENDIANNESS(ENDIANNESS_LITTLE)
MCFG_ADDRESS_MAP_BANK_DATABUS_WIDTH(8)
MCFG_ADDRESS_MAP_BANK_ADDRBUS_WIDTH(20)
MCFG_ADDRESS_MAP_BANK_STRIDE(0x10000)
MCFG_ADDRESS_MAP_BANK_STRIDE(0xc000)
MCFG_DEVICE_ADD("crt5027", CRT5027, XTAL_6MHz)
MCFG_TMS9927_CHAR_WIDTH(8)
@ -740,11 +701,12 @@ static MACHINE_CONFIG_START( itt3030, itt3030_state )
MCFG_GFXDECODE_ADD("gfxdecode", "palette", itt3030)
MCFG_PALETTE_ADD_MONOCHROME("palette")
MCFG_PALETTE_ADD("palette", 3)
MCFG_PALETTE_INIT_OWNER(itt3030_state, itt3030)
/* internal ram */
MCFG_RAM_ADD("mainram")
MCFG_RAM_DEFAULT_SIZE("512K")
MCFG_RAM_DEFAULT_SIZE("256K")
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO( "mono" )