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aha1542b: Add more handler stubs (nw)

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This commit is contained in:
AJR 2019-05-07 07:16:53 -04:00
parent d925a68ef7
commit 4282dc204f
2 changed files with 71 additions and 6 deletions
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65
src/devices/bus/isa/aha1542b.cpp
View File

@ -25,6 +25,7 @@ DEFINE_DEVICE_TYPE(AHA1542B, aha1542b_device, "aha1542b", "AHA-1542B SCSI Contro
aha154x_device::aha154x_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, type, tag, owner, clock)
, device_isa16_card_interface(mconfig, *this)
, m_localcpu(*this, "localcpu")
, m_scsic(*this, "scsi:7:scsic")
, m_fdc(*this, "fdc")
, m_bios(*this, "bios")
@ -60,11 +61,27 @@ void aha154x_device::device_reset()
m_dma_mode = 0;
}
void aha154x_device::transfer_speed_w(u8 data)
{
const unsigned div = BIT(data, 3) ? (data & 3) + 5 : 4;
logerror("Transfer speed = %.2f MB/s\n", 20.0 * 2 / div);
}
void aha154x_device::dma_mode_w(u8 data)
{
m_dma_mode = data;
}
void aha154x_device::bus_on_time_w(u8 data)
{
logerror("Bus on time = %d microseconds\n", data & 0x0f);
}
void aha154x_device::bus_off_time_w(u8 data)
{
logerror("Bus off time = %d microseconds\n", std::max(1, (data & 0x0f) * 4));
}
u8 aha154x_device::fifo_data_r()
{
const u8 data = m_fifo_data[m_fifo_read_index];
@ -105,17 +122,53 @@ void aha154x_device::i8085_base_map(address_map &map)
{
map(0x0000, 0x3fff).rom().region("mcode", 0);
map(0x8000, 0x800f).m(m_scsic, FUNC(aic6250_device::map));
map(0xc080, 0xc080).w(FUNC(aha154x_device::transfer_speed_w));
map(0xc082, 0xc082).w(FUNC(aha154x_device::dma_mode_w));
map(0xc08c, 0xc08c).w(FUNC(aha154x_device::bus_on_time_w));
map(0xc08d, 0xc08d).w(FUNC(aha154x_device::bus_off_time_w));
map(0xc0ac, 0xc0ac).rw(FUNC(aha154x_device::fifo_data_r), FUNC(aha154x_device::fifo_data_w));
map(0xc0c0, 0xc0c9).ram().share("fifo_data");
map(0xe000, 0xe7ff).ram();
}
void aha1542a_device::local_status_w(u8 data)
{
logerror("Setting local status = %02X\n", data);
}
void aha1542a_device::int_status_w(u8 data)
{
logerror("Setting interrupt status = %02X\n", data);
}
void aha1542a_device::srst_clear_w(u8 data)
{
m_localcpu->set_input_line(I8085_TRAP_LINE, CLEAR_LINE);
}
void aha1542a_device::scsi_rstreq_clear_w(u8 data)
{
}
READ_LINE_MEMBER(aha1542a_device::host_int_r)
{
return 0;
}
READ_LINE_MEMBER(aha1542a_device::scsi_rstreq_r)
{
return 0;
}
void aha1542a_device::i8085_map(address_map &map)
{
i8085_base_map(map);
map(0xa000, 0xa000).w(FUNC(aha1542a_device::local_status_w));
map(0xa001, 0xa001).r("fromhost", FUNC(generic_latch_8_device::read));
map(0xa001, 0xa001).w("tohost", FUNC(generic_latch_8_device::write));
map(0xa002, 0xa002).w(FUNC(aha1542a_device::int_status_w));
map(0xa003, 0xa003).w(FUNC(aha1542a_device::srst_clear_w));
map(0xa004, 0xa004).w(FUNC(aha1542a_device::scsi_rstreq_clear_w));
}
void aha1542b_device::i8085_map(address_map &map)
@ -133,7 +186,7 @@ static INPUT_PORTS_START(aha1542a)
PORT_DIPSETTING(0x02, DEF_STR(Off))
PORT_DIPSETTING(0x00, DEF_STR(On))
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_CUSTOM) PORT_READ_LINE_DEVICE_MEMBER("tohost", generic_latch_8_device, pending_r)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_UNKNOWN)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_CUSTOM) PORT_READ_LINE_DEVICE_MEMBER(DEVICE_SELF, aha1542a_device, host_int_r)
PORT_DIPNAME(0x10, 0x10, "SCSI Parity Checking") PORT_DIPLOCATION("J1:3")
PORT_DIPSETTING(0x00, "Disabled")
PORT_DIPSETTING(0x10, "Enabled")
@ -142,7 +195,7 @@ static INPUT_PORTS_START(aha1542a)
PORT_DIPSETTING(0x40, "5.7 MB/s")
PORT_DIPSETTING(0x20, "6.7 MB/s")
PORT_DIPSETTING(0x00, "8.0 MB/s")
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_CUSTOM) // SCSI reset
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_CUSTOM) PORT_READ_LINE_DEVICE_MEMBER(DEVICE_SELF, aha1542a_device, scsi_rstreq_r)
PORT_START("CONFIG")
PORT_DIPNAME(0x07, 0x07, "SCSI Address ID") PORT_DIPLOCATION("J1:4,5,6")
@ -428,11 +481,11 @@ void aha154x_device::scsi_add(machine_config &config)
void aha1542a_device::device_add_mconfig(machine_config &config)
{
i8085a_cpu_device &localcpu(I8085A(config, "localcpu", 10'000'000));
i8085a_cpu_device &localcpu(I8085A(config, m_localcpu, 10'000'000));
localcpu.set_addrmap(AS_PROGRAM, &aha1542a_device::i8085_map);
generic_latch_8_device &fromhost(GENERIC_LATCH_8(config, "fromhost"));
fromhost.data_pending_callback().set_inputline("localcpu", I8085_RST55_LINE);
fromhost.data_pending_callback().set_inputline(m_localcpu, I8085_RST55_LINE);
GENERIC_LATCH_8(config, "tohost");
@ -443,11 +496,11 @@ void aha1542a_device::device_add_mconfig(machine_config &config)
void aha1542b_device::device_add_mconfig(machine_config &config)
{
i8085a_cpu_device &localcpu(I8085A(config, "localcpu", 10'000'000));
i8085a_cpu_device &localcpu(I8085A(config, m_localcpu, 10'000'000));
localcpu.set_addrmap(AS_PROGRAM, &aha1542b_device::i8085_map);
AIC565(config, m_busaic);
m_busaic->hrst_callback().set_inputline("localcpu", INPUT_LINE_RESET);
m_busaic->hrst_callback().set_inputline(m_localcpu, INPUT_LINE_RESET);
// Soft reset interrupt is not used
scsi_add(config);

12
src/devices/bus/isa/aha1542b.h
View File

@ -24,7 +24,10 @@ protected:
virtual void device_start() override;
virtual void device_reset() override;
void transfer_speed_w(u8 data);
void dma_mode_w(u8 data);
void bus_on_time_w(u8 data);
void bus_off_time_w(u8 data);
u8 fifo_data_r();
void fifo_data_w(u8 data);
DECLARE_WRITE_LINE_MEMBER(aic_breq_w);
@ -33,6 +36,7 @@ protected:
void scsi_add(machine_config &config);
void scsic_config(device_t *device);
required_device<cpu_device> m_localcpu;
required_device<aic6250_device> m_scsic;
required_device<upd765_family_device> m_fdc;
required_region_ptr<u8> m_bios;
@ -50,12 +54,20 @@ public:
static constexpr feature_type unemulated_features() { return feature::DISK; }
DECLARE_READ_LINE_MEMBER(host_int_r);
DECLARE_READ_LINE_MEMBER(scsi_rstreq_r);
protected:
virtual ioport_constructor device_input_ports() const override;
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
private:
void local_status_w(u8 data);
void int_status_w(u8 data);
void srst_clear_w(u8 data);
void scsi_rstreq_clear_w(u8 data);
void i8085_map(address_map &map);
};