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mos6530n: Fixed address maps. (nw)

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This commit is contained in:
Curt Coder 2015-05-23 21:31:33 +03:00
parent 71afdc9758
commit a474c0e5e6
2 changed files with 87 additions and 54 deletions
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131
src/emu/machine/mos6530n.c
View File

@ -29,37 +29,49 @@ const device_type MOS6532n = &device_creator<mos6532_t>;
DEVICE_ADDRESS_MAP_START( rom_map, 8, mos6530_t )
ADDRESS_MAP_GLOBAL_MASK(0x3ff)
AM_RANGE(0x000, 0x3ff) AM_READ(rom_r)
ADDRESS_MAP_END
DEVICE_ADDRESS_MAP_START( ram_map, 8, mos6530_t )
ADDRESS_MAP_GLOBAL_MASK(0x3f)
AM_RANGE(0x00, 0x3f) AM_READWRITE(ram_r, ram_w)
ADDRESS_MAP_END
DEVICE_ADDRESS_MAP_START( io_map, 8, mos6530_t )
AM_RANGE(0x00, 0x00) AM_READWRITE(pa_data_r, pa_data_w)
AM_RANGE(0x01, 0x01) AM_READWRITE(pa_ddr_r, pa_ddr_w)
AM_RANGE(0x02, 0x02) AM_READWRITE(pb_data_r, pb_data_w)
AM_RANGE(0x03, 0x03) AM_READWRITE(pb_ddr_r, pb_ddr_w)
AM_RANGE(0x04, 0x0f) AM_READ(timer_r)
AM_RANGE(0x04, 0x0f) AM_WRITE(timer_w)
ADDRESS_MAP_GLOBAL_MASK(0xf)
AM_RANGE(0x00, 0x00) AM_MIRROR(0x8) AM_READWRITE(pa_data_r, pa_data_w)
AM_RANGE(0x01, 0x01) AM_MIRROR(0x8) AM_READWRITE(pa_ddr_r, pa_ddr_w)
AM_RANGE(0x02, 0x02) AM_MIRROR(0x8) AM_READWRITE(pb_data_r, pb_data_w)
AM_RANGE(0x03, 0x03) AM_MIRROR(0x8) AM_READWRITE(pb_ddr_r, pb_ddr_w)
AM_RANGE(0x04, 0x07) AM_WRITE(timer_off_w)
AM_RANGE(0x0c, 0x0f) AM_WRITE(timer_on_w)
AM_RANGE(0x04, 0x04) AM_MIRROR(0x2) AM_READ(timer_off_r)
AM_RANGE(0x0c, 0x0c) AM_MIRROR(0x2) AM_READ(timer_on_r)
AM_RANGE(0x05, 0x05) AM_MIRROR(0xa) AM_READ(irq_r)
ADDRESS_MAP_END
DEVICE_ADDRESS_MAP_START( ram_map, 8, mos6532_t )
ADDRESS_MAP_GLOBAL_MASK(0x7f)
AM_RANGE(0x00, 0x7f) AM_READWRITE(ram_r, ram_w)
ADDRESS_MAP_END
DEVICE_ADDRESS_MAP_START( io_map, 8, mos6532_t )
AM_RANGE(0x00, 0x00) AM_READWRITE(pa_data_r, pa_data_w)
AM_RANGE(0x01, 0x01) AM_READWRITE(pa_ddr_r, pa_ddr_w)
AM_RANGE(0x02, 0x02) AM_READWRITE(pb_data_r, pb_data_w)
AM_RANGE(0x03, 0x03) AM_READWRITE(pb_ddr_r, pb_ddr_w)
AM_RANGE(0x04, 0x0f) AM_READ(timer_r)
AM_RANGE(0x04, 0x07) AM_WRITE(edge_w)
AM_RANGE(0x14, 0x1f) AM_WRITE(timer_w)
ADDRESS_MAP_GLOBAL_MASK(0x1f)
AM_RANGE(0x00, 0x00) AM_MIRROR(0x18) AM_READWRITE(pa_data_r, pa_data_w)
AM_RANGE(0x01, 0x01) AM_MIRROR(0x18) AM_READWRITE(pa_ddr_r, pa_ddr_w)
AM_RANGE(0x02, 0x02) AM_MIRROR(0x18) AM_READWRITE(pb_data_r, pb_data_w)
AM_RANGE(0x03, 0x03) AM_MIRROR(0x18) AM_READWRITE(pb_ddr_r, pb_ddr_w)
AM_RANGE(0x14, 0x17) AM_WRITE(timer_off_w)
AM_RANGE(0x1c, 0x1f) AM_WRITE(timer_on_w)
AM_RANGE(0x04, 0x04) AM_MIRROR(0x12) AM_READ(timer_off_r)
AM_RANGE(0x0c, 0x0c) AM_MIRROR(0x12) AM_READ(timer_on_r)
AM_RANGE(0x05, 0x05) AM_MIRROR(0x1a) AM_READ(irq_r)
AM_RANGE(0x04, 0x07) AM_MIRROR(0x8) AM_WRITE(edge_w)
ADDRESS_MAP_END
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
@ -235,13 +247,14 @@ void mos6530_base_t::device_reset()
m_pb_ddr = 0;
m_ie_timer = false;
m_irq_timer = true;
m_irq_timer = false;
m_ie_edge = false;
m_irq_edge = false;
m_positive = false;
update_pa();
update_pb();
update_irq();
live_abort();
}
@ -573,43 +586,56 @@ WRITE8_MEMBER( mos6530_base_t::pb_ddr_w )
// timer_r -
//-------------------------------------------------
READ8_MEMBER( mos6530_base_t::timer_r )
READ8_MEMBER( mos6530_base_t::timer_off_r )
{
UINT8 data = 0;
if (space.debugger_access())
return 0;
if (offset & 0x01)
{
data |= get_irq_flags();
}
else
{
live_sync();
return timer_r(false);
}
data = cur_live.value;
READ8_MEMBER( mos6530_base_t::timer_on_r )
{
if (space.debugger_access())
return 0;
checkpoint();
live_run();
return timer_r(true);
}
m_ie_timer = BIT(offset, 3) ? true : false;
}
UINT8 mos6530_base_t::timer_r(bool ie)
{
UINT8 data = 0;
bool irq_dirty = false;
live_sync();
if (m_irq_timer) {
m_irq_timer = false;
irq_dirty = true;
}
m_ie_timer = ie;
m_irq_timer = false;
update_irq();
if (m_irq_edge) {
m_irq_edge = false;
irq_dirty = true;
}
data = cur_live.value;
if (irq_dirty) {
update_irq();
if (LOG_TIMER) logerror("%s %s %s '%s' Timer read %02x IE %u\n", machine().time().as_string(), machine().describe_context(), name(), tag(), data, m_ie_timer ? 1 : 0);
checkpoint();
live_run();
return data;
}
//-------------------------------------------------
// irq_r -
//-------------------------------------------------
READ8_MEMBER( mos6530_base_t::irq_r )
{
UINT8 data = get_irq_flags();
if (!space.debugger_access()) {
if (m_irq_edge) {
m_irq_edge = false;
update_irq();
}
}
return data;
@ -620,7 +646,17 @@ READ8_MEMBER( mos6530_base_t::timer_r )
// timer_w -
//-------------------------------------------------
WRITE8_MEMBER( mos6530_base_t::timer_w )
WRITE8_MEMBER( mos6530_base_t::timer_off_w )
{
timer_w(offset, data, false);
}
WRITE8_MEMBER( mos6530_base_t::timer_on_w )
{
timer_w(offset, data, true);
}
void mos6530_base_t::timer_w(offs_t offset, UINT8 data, bool ie)
{
live_sync();
@ -633,15 +669,12 @@ WRITE8_MEMBER( mos6530_base_t::timer_w )
case 3: m_shift = 1024; break;
}
m_ie_timer = BIT(offset, 3) ? true : false;
m_ie_timer = ie;
m_irq_timer = false;
update_irq();
if (LOG_TIMER) logerror("%s %s %s '%s' Timer value %02x shift %u IE %u\n", machine().time().as_string(), machine().describe_context(), name(), tag(), data, m_shift, m_ie_timer ? 1 : 0);
if (m_irq_timer) {
m_irq_timer = false;
update_irq();
}
checkpoint();
if (cur_live.state != IDLE) {
@ -690,7 +723,6 @@ void mos6530_base_t::live_start()
cur_live.next_state = -1;
cur_live.value = m_timer;
cur_live.irq = false;
checkpoint_live = cur_live;
@ -746,8 +778,6 @@ void mos6530_base_t::live_abort()
cur_live.tm = attotime::never;
cur_live.state = IDLE;
cur_live.next_state = -1;
cur_live.irq = false;
}
void mos6530_base_t::live_run(const attotime &limit)
@ -779,7 +809,6 @@ void mos6530_base_t::live_run(const attotime &limit)
return;
cur_live.value--;
cur_live.irq = true;
if (LOG_TIMER) logerror("%s %s '%s' timer %02x IRQ 0\n", cur_live.tm.as_string(), name(), tag(), cur_live.value);

10
src/emu/machine/mos6530n.h
View File

@ -265,6 +265,8 @@ protected:
void edge_detect(int old, int state);
void pa_w(int bit, int state);
void pb_w(int bit, int state);
void timer_w(offs_t offset, UINT8 data, bool ie);
UINT8 timer_r(bool ie);
DECLARE_READ8_MEMBER( rom_r ) { return m_region->base()[offset]; }
DECLARE_READ8_MEMBER( ram_r ) { return m_ram[offset]; }
@ -277,8 +279,11 @@ protected:
DECLARE_WRITE8_MEMBER( pa_ddr_w );
DECLARE_READ8_MEMBER( pb_ddr_r ) { return m_pb_ddr; }
DECLARE_WRITE8_MEMBER( pb_ddr_w );
DECLARE_READ8_MEMBER( timer_r );
DECLARE_WRITE8_MEMBER( timer_w );
DECLARE_READ8_MEMBER( timer_off_r );
DECLARE_READ8_MEMBER( timer_on_r );
DECLARE_READ8_MEMBER( irq_r );
DECLARE_WRITE8_MEMBER( timer_off_w );
DECLARE_WRITE8_MEMBER( timer_on_w );
DECLARE_WRITE8_MEMBER( edge_w );
optional_shared_ptr<UINT8> m_ram;
@ -352,7 +357,6 @@ protected:
attotime period;
int state, next_state;
UINT8 value;
bool irq;
};
live_info cur_live, checkpoint_live;