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machine/tube: Added save state.

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This commit is contained in:
Nigel Barnes 2020-09-07 14:11:05 +01:00
parent ade3d26da9
commit 739538a143
1 changed files with 40 additions and 24 deletions
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64
src/devices/machine/tube.cpp
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@ -29,12 +29,12 @@ DEFINE_DEVICE_TYPE(TUBE, tube_device, "tube", "Acorn Tube ULA")
// bbc_tube_slot_device - constructor
//-------------------------------------------------
tube_device::tube_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, TUBE, tag, owner, clock),
m_hirq_handler(*this),
m_pnmi_handler(*this),
m_pirq_handler(*this),
m_drq_handler(*this)
tube_device::tube_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, TUBE, tag, owner, clock)
, m_hirq_handler(*this)
, m_pnmi_handler(*this)
, m_pirq_handler(*this)
, m_drq_handler(*this)
{
}
@ -50,6 +50,22 @@ void tube_device::device_start()
m_pnmi_handler.resolve_safe();
m_pirq_handler.resolve_safe();
m_drq_handler.resolve_safe();
// register for state saving
save_item(NAME(m_ph1));
save_item(NAME(m_ph2));
save_item(NAME(m_ph3));
save_item(NAME(m_ph4));
save_item(NAME(m_hp1));
save_item(NAME(m_hp2));
save_item(NAME(m_hp3));
save_item(NAME(m_hp4));
save_item(NAME(m_hstat));
save_item(NAME(m_pstat));
save_item(NAME(m_r1stat));
save_item(NAME(m_ph1pos));
save_item(NAME(m_ph3pos));
save_item(NAME(m_hp3pos));
}
@ -89,7 +105,7 @@ uint8_t tube_device::host_r(offs_t offset)
data = (m_hstat[0] & 0xc0) | m_r1stat;
break;
case 1: /* Register 1 */
case 1: /* Register 1 (24 byte FIFO read only) */
data = m_ph1[0];
if (!machine().side_effects_disabled())
{
@ -104,7 +120,7 @@ uint8_t tube_device::host_r(offs_t offset)
data = m_hstat[1];
break;
case 3: /* Register 2 */
case 3: /* Register 2 (1 byte read only) */
data = m_ph2;
if (BIT(m_hstat[1], 7) && !machine().side_effects_disabled())
{
@ -117,7 +133,7 @@ uint8_t tube_device::host_r(offs_t offset)
data = m_hstat[2];
break;
case 5: /* Register 3 */
case 5: /* Register 3 (2 byte FIFO only) */
data = m_ph3[0];
if ((m_ph3pos > 0) && !machine().side_effects_disabled())
{
@ -132,7 +148,7 @@ uint8_t tube_device::host_r(offs_t offset)
data = m_hstat[3];
break;
case 7: /* Register 4 */
case 7: /* Register 4 (1 byte read only) */
data = m_ph4;
if (BIT(m_hstat[3], 7) && !machine().side_effects_disabled())
{
@ -158,19 +174,19 @@ void tube_device::host_w(offs_t offset, uint8_t data)
m_hstat[0] = (m_hstat[0] & 0xc0) | (data & 0x3f);
break;
case 1: /* Register 1 */
case 1: /* Register 1 (1 byte write only) */
m_hp1 = data;
m_pstat[0] |= 0x80;
m_hstat[0] &= ~0x40;
break;
case 3: /* Register 2 */
case 3: /* Register 2 (1 byte write only) */
m_hp2 = data;
m_pstat[1] |= 0x80;
m_hstat[1] &= ~0x40;
break;
case 5: /* Register 3 */
case 5: /* Register 3 (2 byte FIFO write only) */
if (BIT(m_r1stat, 4))
{
if (m_hp3pos < 2)
@ -190,27 +206,27 @@ void tube_device::host_w(offs_t offset, uint8_t data)
}
break;
case 7: /* Register 4 */
case 7: /* Register 4 (1 byte write only) */
m_hp4 = data;
m_pstat[3] |= 0x80;
m_hstat[3] &= ~0x40;
break;
}
update_interrupts();
}
uint8_t tube_device::parasite_r(offs_t offset)
{
uint8_t data = 0x00;
switch (offset & 0x07)
{
case 0: /*Register 1 flags */
case 0: /* Status and Register 1 flags */
data = m_pstat[0] | m_r1stat;
break;
case 1: /* Register 1 */
case 1: /* Register 1 (1 byte read only) */
data = m_hp1;
if (BIT(m_pstat[0], 7) && !machine().side_effects_disabled())
{
@ -223,7 +239,7 @@ uint8_t tube_device::parasite_r(offs_t offset)
data = m_pstat[1];
break;
case 3: /* Register 2 */
case 3: /* Register 2 (1 byte read only) */
data = m_hp2;
if (BIT(m_pstat[1], 7) && !machine().side_effects_disabled())
{
@ -236,7 +252,7 @@ uint8_t tube_device::parasite_r(offs_t offset)
data = m_pstat[2];
break;
case 5: /* Register 3 */
case 5: /* Register 3 (2 byte FIFO read only) */
data = m_hp3[0];
if ((m_hp3pos > 0) && !machine().side_effects_disabled())
{
@ -254,7 +270,7 @@ uint8_t tube_device::parasite_r(offs_t offset)
data = m_pstat[3];
break;
case 7: /* Register 4 */
case 7: /* Register 4 (1 byte read only) */
data = m_hp4;
if (BIT(m_pstat[3], 7) && !machine().side_effects_disabled())
{
@ -272,7 +288,7 @@ void tube_device::parasite_w(offs_t offset, uint8_t data)
{
switch (offset & 0x07)
{
case 1: /* Register 1 */
case 1: /* Register 1 (24 byte FIFO write only) */
if (m_ph1pos < 24)
{
m_ph1[m_ph1pos++] = data;
@ -282,13 +298,13 @@ void tube_device::parasite_w(offs_t offset, uint8_t data)
}
break;
case 3: /* Register 2 */
case 3: /* Register 2 (1 byte write only) */
m_ph2 = data;
m_hstat[1] |= 0x80;
m_pstat[1] &= ~0x40;
break;
case 5: /* Register 3 */
case 5: /* Register 3 (2 byte FIFO write only) */
if (BIT(m_r1stat, 4))
{
if (m_ph3pos < 2)
@ -308,7 +324,7 @@ void tube_device::parasite_w(offs_t offset, uint8_t data)
}
break;
case 7: /* Register 4 */
case 7: /* Register 4 (1 byte write only) */
m_ph4 = data;
m_hstat[3] |= 0x80;
m_pstat[3] &= ~0x40;