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geneve: Add support for new SID Master card.

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This commit is contained in:
Michael Zapf 2020-09-02 19:24:26 +02:00
parent 82be471f71
commit fd99568b8c
2 changed files with 26 additions and 7 deletions
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1
src/devices/bus/ti99/peb/peribox.cpp
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@ -601,6 +601,7 @@ void ti99_peribox_slot_geneve(device_slot_interface &device)
device.option_add("ccfdc", TI99_CCFDC);
device.option_add("ddcc1", TI99_DDCC1);
device.option_add("forti", TI99_FORTI);
device.option_add("sidmaster", TI99_SIDMASTER);
}
void peribox_gen_device::device_add_mconfig(machine_config &config)

32
src/mame/drivers/geneve.cpp
View file

@ -384,13 +384,13 @@ void geneve_state::memmap_setaddress(address_map &map)
The TMS9901 is fully decoded, no mirroring, so we have 32 bits for it,
and the rest goes to the board (and from there to the PEB)
TMS9995 has a full 15-bit CRU bit address space (attached to A0-A14)
We cannot use the map because there is a least one card (sidmaster) that
activates itself when no other device is selected.
*/
void geneve_state::crumap(address_map &map)
{
map(0x0000, 0xffff).rw(FUNC(geneve_state::cruread), FUNC(geneve_state::cruwrite));
map(0x1ee0, 0x1eff).w(m_gatearray, FUNC(bus::ti99::internal::geneve_gate_array_device::cru_ctrl_write));
map(0x13c0, 0x13cf).w(m_gatearray, FUNC(bus::ti99::internal::geneve_gate_array_device::cru_sstep_write));
map(0x0000, 0x003f).rw(m_tms9901, FUNC(tms9901_device::read), FUNC(tms9901_device::write));
}
static INPUT_PORTS_START(geneve_common)
@ -818,18 +818,36 @@ void geneve_state::write_pfm(offs_t offset, uint8_t data)
CRU handling
*****************************************************************************/
// TODO: change peribox::cruwrite to make this obsolete
void geneve_state::cruwrite(offs_t offset, uint8_t data)
{
m_peribox->cruwrite(offset << 1, data);
offs_t cruaddr = offset << 1;
// 9901 access: 0000..003e (fully decoded)
if ((cruaddr & 0xffc0)==0)
m_tms9901->write(offset & 0x1f, data);
// Gate array: 13c0..13ce (Single step), write only
if ((cruaddr & 0xfff0)==0x13c0)
m_gatearray->cru_sstep_write(offset, data);
// Gate array: 1ee0..1efe (mirror of 9995-internal flags), write only
if ((cruaddr & 0xffe0)==0x1ee0)
m_gatearray->cru_ctrl_write(offset, data);
// Rest of the system
m_peribox->cruwrite(cruaddr, data);
}
uint8_t geneve_state::cruread(offs_t offset)
{
offs_t cruaddr = offset << 1;
uint8_t value = 0;
// 9901 access: 0000..003e (fully decoded)
if ((cruaddr & 0xffc0)==0)
value = m_tms9901->read(offset & 0x3f);
// Propagate the CRU access to external devices
m_peribox->crureadz(offset << 1, &value);
m_peribox->crureadz(cruaddr, &value);
return value;
}