mirror of
https://github.com/holub/mame
synced 2025-05-03 13:06:47 +03:00
(MESS) atari400.c: recovering some speed which got lost with conversion to
slot device in carts which enable and disable ROM continuously (e.g. Dropzone and Jinks). nw.
This commit is contained in:
Fabio Priuli
parent
0ca7c4a8c0
commit
d88fdfacff
@ -270,6 +270,14 @@ public:
|
||||
DECLARE_READ8_MEMBER(read_d5xx); // at least one cart type can enable/disable roms when reading
|
||||
DECLARE_WRITE8_MEMBER(disable_cart);
|
||||
|
||||
// these are needed to handle carts which can disable ROM without
|
||||
// installing/disinstalling continuously RAM and ROM (with e.g. big
|
||||
// preformance hit in Williams carts)
|
||||
DECLARE_READ8_MEMBER(special_read_8000);
|
||||
DECLARE_WRITE8_MEMBER(special_write_8000);
|
||||
DECLARE_READ8_MEMBER(special_read_a000);
|
||||
DECLARE_WRITE8_MEMBER(special_write_a000);
|
||||
|
||||
DECLARE_READ8_MEMBER(a600xl_low_r);
|
||||
DECLARE_READ8_MEMBER(a1200xl_low_r);
|
||||
DECLARE_READ8_MEMBER(a800xl_low_r);
|
||||
@ -299,7 +307,7 @@ protected:
|
||||
optional_device<a800_cart_slot_device> m_cart;
|
||||
optional_device<a800_cart_slot_device> m_cart2;
|
||||
|
||||
int m_cart_disabled;
|
||||
int m_cart_disabled, m_cart_helper;
|
||||
int m_last_offs;
|
||||
UINT8 m_mmu, m_ext_bank;
|
||||
|
||||
@ -1727,6 +1735,57 @@ void a400_state::setup_ram(int bank, UINT32 size)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// these handle cart enable/disable without calling setup_ram thousands of times
|
||||
READ8_MEMBER(a400_state::special_read_8000)
|
||||
{
|
||||
if (!m_cart_disabled)
|
||||
return m_cart->read_80xx(space, offset);
|
||||
else
|
||||
{
|
||||
offset += 0x8000;
|
||||
if (m_ram->size() < offset)
|
||||
return 0;
|
||||
else
|
||||
return m_ram->pointer()[offset];
|
||||
}
|
||||
}
|
||||
|
||||
WRITE8_MEMBER(a400_state::special_write_8000)
|
||||
{
|
||||
if (m_cart_disabled)
|
||||
{
|
||||
offset += 0x8000;
|
||||
if (m_ram->size() >= offset)
|
||||
m_ram->pointer()[offset] = data;
|
||||
}
|
||||
}
|
||||
|
||||
READ8_MEMBER(a400_state::special_read_a000)
|
||||
{
|
||||
if (!m_cart_disabled)
|
||||
return m_cart->read_80xx(space, offset);
|
||||
else
|
||||
{
|
||||
offset += 0xa000;
|
||||
if (m_ram->size() < offset)
|
||||
return 0;
|
||||
else
|
||||
return m_ram->pointer()[offset];
|
||||
}
|
||||
}
|
||||
|
||||
WRITE8_MEMBER(a400_state::special_write_a000)
|
||||
{
|
||||
if (m_cart_disabled)
|
||||
{
|
||||
offset += 0xa000;
|
||||
if (m_ram->size() >= offset)
|
||||
m_ram->pointer()[offset] = data;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
READ8_MEMBER(a400_state::read_d5xx)
|
||||
{
|
||||
disable_cart(space, offset, 0);
|
||||
@ -1742,10 +1801,7 @@ WRITE8_MEMBER(a400_state::disable_cart)
|
||||
case A800_PHOENIX:
|
||||
case A800_BLIZZARD:
|
||||
if (!m_cart_disabled)
|
||||
{
|
||||
m_cart_disabled = 1;
|
||||
setup_ram(2, m_ram->size());
|
||||
}
|
||||
break;
|
||||
case A800_OSS034M:
|
||||
case A800_OSS043M:
|
||||
@ -1755,18 +1811,11 @@ WRITE8_MEMBER(a400_state::disable_cart)
|
||||
// use m_cart_disabled & m_last_offs to avoid continuous remapping of
|
||||
// the memory space in some games (e.g. dropzone)
|
||||
if (offset & 0x8 && !m_cart_disabled)
|
||||
{
|
||||
m_cart_disabled = 1;
|
||||
setup_ram(2, m_ram->size());
|
||||
}
|
||||
else if (!(offset & 0x8))
|
||||
{
|
||||
if (m_cart_disabled)
|
||||
{
|
||||
m_cart_disabled = 0;
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)m_cart));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
}
|
||||
|
||||
if ((offset & 0x7) != m_last_offs)
|
||||
{
|
||||
@ -1779,18 +1828,11 @@ WRITE8_MEMBER(a400_state::disable_cart)
|
||||
case A800_TURBO64:
|
||||
case A800_TURBO128:
|
||||
if (offset & 0x10 && !m_cart_disabled)
|
||||
{
|
||||
m_cart_disabled = 1;
|
||||
setup_ram(2, m_ram->size());
|
||||
}
|
||||
else if (!(offset & 0x10))
|
||||
{
|
||||
if (m_cart_disabled)
|
||||
{
|
||||
m_cart_disabled = 0;
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)m_cart));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
}
|
||||
|
||||
if ((offset & 0x0f) != m_last_offs)
|
||||
{
|
||||
@ -1807,23 +1849,21 @@ WRITE8_MEMBER(a400_state::disable_cart)
|
||||
case A800_OSSM091:
|
||||
case A800_OSS8K:
|
||||
if ((offset & 0x9) == 0x08)
|
||||
setup_ram(2, m_ram->size());
|
||||
m_cart_disabled = 1;
|
||||
else
|
||||
{
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)m_cart));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
m_cart_disabled = 0;
|
||||
m_cart->write_d5xx(space, offset, data);
|
||||
}
|
||||
break;
|
||||
case A800_MICROCALC:
|
||||
m_cart_disabled = (m_cart_disabled + 1) % 5;
|
||||
if (m_cart_disabled == 4)
|
||||
setup_ram(2, m_ram->size());
|
||||
m_cart_helper = (m_cart_helper + 1) % 5;
|
||||
if (m_cart_helper == 4)
|
||||
m_cart_disabled = 1;
|
||||
else
|
||||
{
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)m_cart));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
m_cart->write_d5xx(space, offset, m_cart_disabled);
|
||||
m_cart_disabled = 0;
|
||||
m_cart->write_d5xx(space, offset, m_cart_helper);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
@ -1853,11 +1893,6 @@ void a400_state::setup_cart(a800_cart_slot_device *slot)
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0x8000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0x8000, 0xbfff);
|
||||
break;
|
||||
case A800_PHOENIX:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd500, 0xd5ff, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_BBSB:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0x8000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0x8000, 0x9fff, write8_delegate(FUNC(a800_cart_slot_device::write_80xx),(a800_cart_slot_device*)slot));
|
||||
@ -1869,36 +1904,35 @@ void a400_state::setup_cart(a800_cart_slot_device *slot)
|
||||
case A800_OSS8K:
|
||||
case A800_TURBO64:
|
||||
case A800_TURBO128:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
case A800_PHOENIX:
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0xa000, 0xbfff, read8_delegate(FUNC(a400_state::special_read_a000), this), write8_delegate(FUNC(a400_state::special_write_a000), this));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd500, 0xd5ff, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_EXPRESS:
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0xa000, 0xbfff, read8_delegate(FUNC(a400_state::special_read_a000), this), write8_delegate(FUNC(a400_state::special_write_a000), this));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd570, 0xd57f, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_DIAMOND:
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0xa000, 0xbfff, read8_delegate(FUNC(a400_state::special_read_a000), this), write8_delegate(FUNC(a400_state::special_write_a000), this));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd5d0, 0xd5df, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_WILLIAMS:
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0xa000, 0xbfff, read8_delegate(FUNC(a400_state::special_read_a000), this), write8_delegate(FUNC(a400_state::special_write_a000), this));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd500, 0xd50f, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_SPARTADOS:
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0xa000, 0xbfff, read8_delegate(FUNC(a400_state::special_read_a000), this), write8_delegate(FUNC(a400_state::special_write_a000), this));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd5e0, 0xd5ef, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_BLIZZARD:
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x8000, 0xbfff, read8_delegate(FUNC(a400_state::special_read_8000), this), write8_delegate(FUNC(a400_state::special_write_8000), this));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd500, 0xd5ff, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_MICROCALC:
|
||||
// this can also disable ROM when reading in 0xd500-0xd5ff
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0xa000, 0xbfff, read8_delegate(FUNC(a400_state::special_read_a000), this), write8_delegate(FUNC(a400_state::special_write_a000), this));
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0xd500, 0xd5ff, read8_delegate(FUNC(a400_state::read_d5xx), this), write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_EXPRESS:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd570, 0xd57f, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_DIAMOND:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd5d0, 0xd5df, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_WILLIAMS:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd500, 0xd50f, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_SPARTADOS:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xa000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0xa000, 0xbfff);
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd5e0, 0xd5ef, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_TELELINK2:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0x8000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0x9000, 0x90ff, write8_delegate(FUNC(a800_cart_slot_device::write_80xx),(a800_cart_slot_device*)slot));
|
||||
@ -1906,11 +1940,6 @@ void a400_state::setup_cart(a800_cart_slot_device *slot)
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0xd501, 0xd501, read8_delegate(FUNC(a800_cart_slot_device::read_d5xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd502, 0xd502, write8_delegate(FUNC(a800_cart_slot_device::write_d5xx),(a800_cart_slot_device*)slot));
|
||||
break;
|
||||
case A800_BLIZZARD:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0x8000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0x8000, 0xbfff);
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0xd500, 0xd5ff, write8_delegate(FUNC(a400_state::disable_cart), this));
|
||||
break;
|
||||
case A800_XEGS:
|
||||
m_maincpu->space(AS_PROGRAM).install_read_handler(0x8000, 0xbfff, read8_delegate(FUNC(a800_cart_slot_device::read_80xx),(a800_cart_slot_device*)slot));
|
||||
m_maincpu->space(AS_PROGRAM).unmap_write(0x8000, 0xbfff);
|
||||
@ -1964,6 +1993,7 @@ MACHINE_START_MEMBER( a400_state, a400 )
|
||||
setup_cart(m_cart);
|
||||
|
||||
save_item(NAME(m_cart_disabled));
|
||||
save_item(NAME(m_cart_helper));
|
||||
save_item(NAME(m_last_offs));
|
||||
}
|
||||
|
||||
@ -1977,6 +2007,7 @@ MACHINE_START_MEMBER( a400_state, a800 )
|
||||
setup_cart(m_cart2);
|
||||
|
||||
save_item(NAME(m_cart_disabled));
|
||||
save_item(NAME(m_cart_helper));
|
||||
save_item(NAME(m_last_offs));
|
||||
}
|
||||
|
||||
@ -1987,6 +2018,7 @@ MACHINE_START_MEMBER( a400_state, a800xl )
|
||||
setup_cart(m_cart);
|
||||
|
||||
save_item(NAME(m_cart_disabled));
|
||||
save_item(NAME(m_cart_helper));
|
||||
save_item(NAME(m_last_offs));
|
||||
save_item(NAME(m_mmu));
|
||||
save_item(NAME(m_ext_bank));
|
||||
@ -1998,6 +2030,7 @@ MACHINE_START_MEMBER( a400_state, a5200 )
|
||||
setup_cart(m_cart);
|
||||
|
||||
save_item(NAME(m_cart_disabled));
|
||||
save_item(NAME(m_cart_helper));
|
||||
save_item(NAME(m_last_offs));
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user