static void apple3_update_memory(void)
{
UINT16 bank;
UINT8 page;
if (LOG_MEMORY)
{
logerror("apple3_update_memory(): via_0_b=0x%02x via_1_a=0x0x%02x\n", via_0_b, via_1_a);
}
cpunum_set_clock(0, (via_0_a & 0x80) ? 1000000 : 2000000);
/* bank 2 (0100-01FF) */
if (!(via_0_a & 0x04))
{
if (via_0_b < 0x20)
{
bank = ~0; /* system bank */
page = via_0_b ^ 0x01;
}
else if (via_0_b >= 0xA0)
{
bank = ~0; /* system bank */
page = (via_0_b ^ 0x01) - 0x80;
}
else
{
bank = via_1_a;
page = (via_0_b ^ 0x01) - 0x20;
}
}
else
{
bank = ~0;
page = 0x01;
}
apple3_setbank(2, bank, ((offs_t) page) * 0x100);
/* bank 3 (0200-1FFF) */
apple3_setbank(3, ~0, 0x0200);
/* bank 4 (2000-9FFF) */
apple3_setbank(4, via_1_a, 0x0000);
/* bank 5 (A000-BFFF) */
apple3_setbank(5, ~0, 0x2000);
/* install bank 8 (C000-CFFF) */
if (via_0_a & 0x40)
{
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC000, 0xC0FF, 0, 0, apple3_c0xx_r);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC000, 0xC0FF, 0, 0, apple3_c0xx_w);
}
else
{
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC000, 0xC0FF, 0, 0, MRA8_BANK8);
if (via_0_a & 0x08)
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC000, 0xC0FF, 0, 0, MWA8_ROM);
else
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC000, 0xC0FF, 0, 0, MWA8_BANK8);
apple3_setbank(8, ~0, 0x4000);
}
/* install bank 9 (C100-C4FF) */
if (via_0_a & 0x40)
{
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC100, 0xC4FF, 0, 0, MRA8_NOP);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC100, 0xC4FF, 0, 0, MWA8_NOP);
}
else
{
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC100, 0xC4FF, 0, 0, MRA8_BANK9);
if (via_0_a & 0x08)
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC100, 0xC4FF, 0, 0, MWA8_ROM);
else
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC100, 0xC4FF, 0, 0, MWA8_BANK9);
apple3_setbank(9, ~0, 0x4100);
}
/* install bank 10 (C500-C7FF) */
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC500, 0xC7FF, 0, 0, MRA8_BANK10);
if (via_0_a & 0x08)
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC500, 0xC7FF, 0, 0, MWA8_ROM);
else
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC500, 0xC7FF, 0, 0, MWA8_BANK10);
apple3_setbank(10, ~0, 0x4500);
/* install bank 11 (C800-CFFF) */
if (via_0_a & 0x40)
{
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC800, 0xCFFF, 0, 0, MRA8_NOP);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC800, 0xCFFF, 0, 0, MWA8_NOP);
}
else
{
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC800, 0xCFFF, 0, 0, MRA8_BANK11);
if (via_0_a & 0x08)
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC800, 0xCFFF, 0, 0, MWA8_ROM);
else
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xC800, 0xCFFF, 0, 0, MWA8_BANK11);
apple3_setbank(11, ~0, 0x4800);
}
/* install bank 6 (D000-EFFF) */
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xD000, 0xEFFF, 0, 0, MRA8_BANK6);
if (via_0_a & 0x08)
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xD000, 0xEFFF, 0, 0, MWA8_ROM);
else
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xD000, 0xEFFF, 0, 0, MWA8_BANK6);
apple3_setbank(6, ~0, 0x5000);
/* install bank 7 (F000-FFFF) */
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xF000, 0xFFFF, 0, 0, MRA8_BANK7);
if (via_0_a & 0x09)
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xF000, 0xFFFF, 0, 0, MWA8_ROM);
else
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xF000, 0xFFFF, 0, 0, MWA8_BANK7);
if (via_0_a & 0x01)
memory_set_bankptr(7, memory_region(REGION_CPU1));
else
apple3_setbank(7, ~0, 0x7000);
/* reinstall VIA handlers */
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xFFD0, 0xFFDF, 0, 0, via_0_r);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xFFD0, 0xFFDF, 0, 0, via_0_w);
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xFFE0, 0xFFEF, 0, 0, via_1_r);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xFFE0, 0xFFEF, 0, 0, via_1_w);
}
static void apple3_update_memory(running_machine &machine)
{
apple3_state *state = machine.driver_data<apple3_state>();
UINT16 bank;
UINT8 page;
address_space& space = machine.device("maincpu")->memory().space(AS_PROGRAM);
if (LOG_MEMORY)
{
logerror("apple3_update_memory(): via_0_b=0x%02x via_1_a=0x0x%02x\n", state->m_via_0_b, state->m_via_1_a);
}
machine.device("maincpu")->set_unscaled_clock((state->m_via_0_a & 0x80) ? 1000000 : 2000000);
/* bank 2 (0100-01FF) */
if (!(state->m_via_0_a & 0x04))
{
if (state->m_via_0_b < 0x20)
{
bank = ~0; /* system bank */
page = state->m_via_0_b ^ 0x01;
}
else if (state->m_via_0_b >= 0xA0)
{
bank = ~0; /* system bank */
page = (state->m_via_0_b ^ 0x01) - 0x80;
}
else
{
bank = state->m_via_1_a;
page = (state->m_via_0_b ^ 0x01) - 0x20;
}
}
else
{
bank = ~0;
page = 0x01;
}
apple3_setbank(machine,"bank2", bank, ((offs_t) page) * 0x100);
/* bank 3 (0200-1FFF) */
apple3_setbank(machine,"bank3", ~0, 0x0200);
/* bank 4 (2000-9FFF) */
apple3_setbank(machine,"bank4", state->m_via_1_a, 0x0000);
/* bank 5 (A000-BFFF) */
apple3_setbank(machine,"bank5", ~0, 0x2000);
/* install bank 8 (C000-CFFF) */
if (state->m_via_0_a & 0x40)
{
space.install_read_handler(0xC000, 0xC0FF, read8_delegate(FUNC(apple3_state::apple3_c0xx_r),state));
space.install_write_handler(0xC000, 0xC0FF, write8_delegate(FUNC(apple3_state::apple3_c0xx_w),state));
}
else
{
space.install_read_bank(0xC000, 0xC0FF, "bank8");
if (state->m_via_0_a & 0x08)
space.unmap_write(0xC000, 0xC0FF);
else
space.install_write_bank(0xC000, 0xC0FF, "bank8");
apple3_setbank(machine,"bank8", ~0, 0x4000);
}
/* install bank 9 (C100-C4FF) */
if (state->m_via_0_a & 0x40)
{
space.nop_readwrite(0xC100, 0xC4FF);
}
else
{
space.install_read_bank(0xC100, 0xC4FF, "bank9");
if (state->m_via_0_a & 0x08)
space.unmap_write(0xC100, 0xC4FF);
else
space.install_write_bank(0xC100, 0xC4FF, "bank9");
apple3_setbank(machine,"bank9", ~0, 0x4100);
}
/* install bank 10 (C500-C7FF) */
space.install_read_bank(0xC500, 0xC7FF, "bank10");
if (state->m_via_0_a & 0x08)
space.unmap_write(0xC500, 0xC7FF);
else
space.install_write_bank(0xC500, 0xC7FF, "bank10");
apple3_setbank(machine,"bank10", ~0, 0x4500);
/* install bank 11 (C800-CFFF) */
if (state->m_via_0_a & 0x40)
{
space.nop_readwrite(0xC800, 0xCFFF);
}
else
{
space.install_read_bank(0xC800, 0xCFFF, "bank11");
if (state->m_via_0_a & 0x08)
space.unmap_write(0xC800, 0xCFFF);
else
space.install_write_bank(0xC800, 0xCFFF, "bank11");
apple3_setbank(machine,"bank11", ~0, 0x4800);
}
/* install bank 6 (D000-EFFF) */
space.install_read_bank(0xD000, 0xEFFF, "bank6");
if (state->m_via_0_a & 0x08)
space.unmap_write(0xD000, 0xEFFF);
else
space.install_write_bank(0xD000, 0xEFFF, "bank6");
apple3_setbank(machine,"bank6", ~0, 0x5000);
/* install bank 7 (F000-FFFF) */
space.install_read_bank(0xF000, 0xFFFF, "bank7");
if (state->m_via_0_a & 0x09)
space.unmap_write(0xF000, 0xFFFF);
else
space.install_write_bank(0xF000, 0xFFFF, "bank7");
if (state->m_via_0_a & 0x01)
state->membank("bank7")->set_base(machine.root_device().memregion("maincpu")->base());
else
apple3_setbank(machine,"bank7", ~0, 0x7000);
/* reinstall VIA handlers */
{
via6522_device *via_0 = space.machine().device<via6522_device>("via6522_0");
via6522_device *via_1 = space.machine().device<via6522_device>("via6522_1");
space.install_readwrite_handler(0xFFD0, 0xFFDF, 0, 0, read8_delegate(FUNC(via6522_device::read),via_0), write8_delegate(FUNC(via6522_device::write),via_0));
space.install_readwrite_handler(0xFFE0, 0xFFEF, 0, 0, read8_delegate(FUNC(via6522_device::read),via_1), write8_delegate(FUNC(via6522_device::write),via_1));
}
}
