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labtam: improve z80sbc floppy hookup

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This commit is contained in:
Patrick Mackinlay 2022-05-31 17:23:14 +07:00
parent 9de083aee9
commit a87474c264
2 changed files with 44 additions and 18 deletions
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61
src/devices/bus/multibus/labtam_z80sbc.cpp
View File

@ -8,8 +8,6 @@
* - https://arvutimuuseum.ut.ee/index.php?m=eksponaadid&id=223
*
* TODO:
* - interrupts and dma
* - floppy
* - serial
*/
/*
@ -210,6 +208,12 @@ ioport_constructor labtam_z80sbc_device::device_input_ports() const
return INPUT_PORTS_NAME(labtam_z80sbc);
}
void labtam_z80sbc_device::device_resolve_objects()
{
// TODO: Multibus interrupt lines may optionally be wire-wrapped to
// Am9517 interrupt request inputs 0, 1, 3 or 7.
}
void labtam_z80sbc_device::device_start()
{
m_ram0 = std::make_unique<u8[]>(0x10000);
@ -247,9 +251,6 @@ void labtam_z80sbc_device::device_reset()
m_bus->space(AS_IO).install_write_handler(pio_select | 4, pio_select | 4, write8smo_delegate(*this, FUNC(labtam_z80sbc_device::fdcattn_w)));
m_bus->space(AS_IO).install_read_handler(pio_select | 8, pio_select | 8, read8smo_delegate(*this, FUNC(labtam_z80sbc_device::fdcstatus_r)));
// TODO: Multibus interrupt lines may optionally be wire-wrapped to
// Am9517 interrupt request inputs 0, 1, 3 or 7.
m_installed = true;
}
@ -345,7 +346,7 @@ void labtam_z80sbc_device::cpu_pio(address_map &map)
map(0x0020, 0x0020).mirror(0xff00).lw8([this](u8 data) { m_map_enabled = true; LOG("intswt 0x%02x mapnum 0x%02x (%s)\n", data, m_map_num, machine().describe_context()); }, "intswt");
map(0x0028, 0x0028).mirror(0xff00).lw8([this](u8 data) { m_map_enabled = true; m_map_num = data & 0x0f; LOG("mapnum 0x%02x (%s)\n", data, machine().describe_context()); }, "mapnum");
map(0x0030, 0x0033).mirror(0xff00).w(FUNC(labtam_z80sbc_device::drive_w));
map(0x0030, 0x0037).mirror(0xff00).w(FUNC(labtam_z80sbc_device::drive_w));
map(0x0038, 0x0038).mirror(0xff00).lw8([this](u8 data) { LOG("reset drive fault\n"); }, "fltrest");
map(0x0040, 0x0043).mirror(0xff00).rw(m_fdc, FUNC(wd2793_device::read), FUNC(wd2793_device::write));
map(0x0048, 0x004b).mirror(0xff00).rw(m_sio, FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w));
@ -358,7 +359,7 @@ void labtam_z80sbc_device::cpu_pio(address_map &map)
map(0x0068, 0x0068).mirror(0xff00).r(FUNC(labtam_z80sbc_device::drvstatus_r));
map(0x0070, 0x0070).select(0xff00).lr8([this](offs_t offset) { return m_map_lo[offset >> 8]; }, "maprd0");
map(0x0078, 0x0078).select(0xff00).lr8([this](offs_t offset) { return m_map_hi[offset >> 8]; }, "maprd1"); // TODO: code at 167c reads maprd1 lower 3 bits?
map(0x0078, 0x0078).select(0xff00).lr8([this](offs_t offset) { return m_map_hi[offset >> 8] | m_map_num; }, "maprd1");
map(0x0080, 0x0080).mirror(0xff00).rw(m_dma[0], FUNC(z80dma_device::read), FUNC(z80dma_device::write));
map(0x00a0, 0x00a0).mirror(0xff00).rw(m_dma[1], FUNC(z80dma_device::read), FUNC(z80dma_device::write));
@ -442,18 +443,42 @@ void labtam_z80sbc_device::map_w(unsigned map_num, offs_t offset, u8 data)
void labtam_z80sbc_device::drive_w(offs_t offset, u8 data)
{
LOG("drive_w %s drive %d (%s)\n", data ? "select" : "deselect", offset, machine().describe_context());
if (data)
switch (offset)
{
m_drive = offset;
m_fdc->enmf_w(BIT(m_e21->read(), offset));
m_fdc->set_floppy(m_fdd[*m_drive]->get_device());
}
else
{
m_drive.reset();
m_fdc->set_floppy(nullptr);
case 0:
case 1:
case 2:
case 3:
if (BIT(data, 0))
{
LOG("drive_w select drive %d (%s)\n", offset, machine().describe_context());
m_drive = offset;
m_fdc->set_floppy(m_fdd[*m_drive]->get_device());
}
else
{
m_drive.reset();
m_fdc->set_floppy(nullptr);
}
break;
case 4:
m_fdc->dden_w(BIT(data, 0));
break;
case 5:
// FIXME: make side select persistent
if (m_drive)
{
LOG("drive_w select side %d (%s)\n", BIT(data, 0), machine().describe_context());
m_fdd[*m_drive]->get_device()->ss_w(BIT(data, 0));
}
break;
case 6:
// TODO: precomp
break;
case 7:
LOG("drive_w mini-floppy %s (%s)\n", BIT(data, 0) ? "disable" : "enable", machine().describe_context());
m_fdc->enmf_w(BIT(data, 0));
break;
}
}

1
src/devices/bus/multibus/labtam_z80sbc.h
View File

@ -30,6 +30,7 @@ protected:
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
virtual ioport_constructor device_input_ports() const override;
virtual void device_resolve_objects() override;
virtual void device_start() override;
virtual void device_reset() override;