diff options
Diffstat (limited to 'src/mame/drivers/fs3216.cpp')
-rw-r--r-- | src/mame/drivers/fs3216.cpp | 357 |
1 files changed, 286 insertions, 71 deletions
diff --git a/src/mame/drivers/fs3216.cpp b/src/mame/drivers/fs3216.cpp index 1f7587af9a3..cbe6aa178df 100644 --- a/src/mame/drivers/fs3216.cpp +++ b/src/mame/drivers/fs3216.cpp @@ -12,7 +12,7 @@ //#include "bus/rs232/rs232.h" #include "cpu/m68000/m68000.h" #include "cpu/8x300/8x300.h" -//#include "imagedev/floppy.h" +#include "imagedev/floppy.h" #include "machine/bankdev.h" //#include "machine/com8116.h" #include "machine/upd765.h" @@ -32,7 +32,9 @@ public: , m_clb(*this, "clb") , m_ctc(*this, "ctc") , m_fdc(*this, "fdc") + , m_floppy(*this, "fdc:%u", 0U) , m_earom(*this, "earom") + , m_vecprom(*this, "vecprom") , m_videoram(*this, "videoram") , m_chargen(*this, "chargen") { @@ -47,20 +49,32 @@ protected: private: MC6845_UPDATE_ROW(crt_update_row); - DECLARE_READ16_MEMBER(mmu_read); - DECLARE_WRITE16_MEMBER(mmu_write); + void mmu_reg_w(offs_t offset, u16 data); + u16 mmu_read(offs_t offset, u16 mem_mask); + void mmu_write(offs_t offset, u16 data, u16 mem_mask); DECLARE_WRITE_LINE_MEMBER(mmu_reset_w); void mmu_init_w(u16 data); + u16 irq_r(); + IRQ_CALLBACK_MEMBER(intack); + DECLARE_READ8_MEMBER(ctc_r); DECLARE_WRITE8_MEMBER(ctc_w); - void floppy_select_w(u8 data); + u16 earom_recall_r(); + u16 earom_store_r(); + + DECLARE_WRITE_LINE_MEMBER(fdc_int_w); + DECLARE_WRITE_LINE_MEMBER(fdc_drq_w); + DECLARE_WRITE_LINE_MEMBER(fdc_hdl_w); + DECLARE_WRITE_LINE_MEMBER(floppy_idx_w); + void fdc_us_w(u8 data); + u16 floppy_select_r(offs_t offset); + void floppy_select_w(offs_t offset, u16 data); + void floppy_control_w(u8 data); u8 floppy_status_r(); - void fdc_reset_w(u16 data); + TIMER_CALLBACK_MEMBER(fdc_dma); u8 fdc_ram_r(offs_t offset); void fdc_ram_w(offs_t offset, u8 data); - u16 earom_recall_r(); - u16 earom_store_r(); void main_map(address_map &map); void clb_map(address_map &map); @@ -71,34 +85,59 @@ private: required_device<address_map_bank_device> m_clb; required_device<z80ctc_device> m_ctc; required_device<upd765a_device> m_fdc; + required_device_array<floppy_connector, 4> m_floppy; required_device<x2212_device> m_earom; + required_region_ptr<u8> m_vecprom; required_shared_ptr<u16> m_videoram; required_region_ptr<u8> m_chargen; - std::unique_ptr<u8[]> m_fdc_ram; + u32 m_mmu_reg[4]; + bool m_from_reset; - bool m_in_reset; - bool m_mmu_init; + u8 m_floppy_status; + u8 m_floppy_control; + u8 m_floppy_select; + u8 m_fdc_select; + u16 m_fdc_dma_count; + emu_timer *m_fdc_dma_timer; + std::unique_ptr<u8[]> m_fdc_ram; }; void fs3216_state::machine_start() { - m_fdc_ram = make_unique_clear<u8[]>(0x400); - save_pointer(NAME(m_fdc_ram), 0x400); - - save_item(NAME(m_in_reset)); - save_item(NAME(m_mmu_init)); + m_fdc_ram = make_unique_clear<u8[]>(0x800); + save_pointer(NAME(m_fdc_ram), 0x800); + + std::fill(std::begin(m_mmu_reg), std::end(m_mmu_reg), 0); + + m_floppy_status = 0x80; + m_floppy_control = 0; + m_floppy_select = 0; + m_fdc_select = 0; + m_fdc_dma_count = 0; + + m_fdc_dma_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(fs3216_state::fdc_dma), this)); + + save_item(NAME(m_mmu_reg)); + save_item(NAME(m_from_reset)); + save_item(NAME(m_floppy_status)); + save_item(NAME(m_floppy_control)); + save_item(NAME(m_floppy_select)); + save_item(NAME(m_fdc_select)); + save_item(NAME(m_fdc_dma_count)); } void fs3216_state::machine_reset() { - m_in_reset = true; - m_mmu_init = false; + m_from_reset = true; // FIXME: fix the 68000 so that it doesn't read vectors during device_reset m_maincpu->reset(); + + floppy_control_w(0); + floppy_select_w(0, 0); } @@ -109,56 +148,82 @@ MC6845_UPDATE_ROW(fs3216_state::crt_update_row) for (int i = 0; i < x_count; i++) { u16 chr = m_videoram[(ma + i) & 0x7ff]; - rgb_t fg = rgb_t::white(); + rgb_t fg = BIT(chr, 13) ? rgb_t::white() : rgb_t(0xc0, 0xc0, 0xc0); rgb_t bg = rgb_t::black(); u16 dots = m_chargen[(chr & 0xff) << 4 | ra] << 1; + if (ra == 9 && BIT(chr, 12)) + dots = 0x1ff; + for (int n = 9; n > 0; n--, dots <<= 1) *px++ = BIT(dots, 8) ? fg : bg; } } -READ16_MEMBER(fs3216_state::mmu_read) +void fs3216_state::mmu_reg_w(offs_t offset, u16 data) { - if (m_in_reset) + // 3x SN74LS374N for each of the four spaces + u32 ® = m_mmu_reg[offset >> 1]; + if (BIT(offset, 0)) + reg = (reg & 0xff0000) | data; + else + reg = (reg & 0x00ffff) | (data & 0x00ff) << 16; +} + +u16 fs3216_state::mmu_read(offs_t offset, u16 mem_mask) +{ + const bool a23 = BIT(offset, 22); + const bool mmu_disable = !a23 && BIT(m_maincpu->get_fc(), 2); + const u32 mmu_reg = mmu_disable ? (m_from_reset ? 0xfffe00 : 0xfff000) : m_mmu_reg[(offset >> 20) & 3]; + + if (!mmu_disable && !machine().side_effects_disabled()) { - if (m_mmu_init && !BIT(offset, 22) && !machine().side_effects_disabled()) - m_in_reset = false; - else - offset = (offset & 0x03ffff) | 0x1c0000; + // TODO: do limit check and cause BERR on failure } - // TODO: MMU segments - return m_clb->read16(space, offset & 0x1fffff, mem_mask); + offs_t clbaddr = offset + ((mmu_reg & 0x000fff) << 9); + clbaddr = (clbaddr & 0x1fffff) | (clbaddr & 0x100000) << 1; + return m_clb->read16(clbaddr, mem_mask); } -WRITE16_MEMBER(fs3216_state::mmu_write) +void fs3216_state::mmu_write(offs_t offset, u16 data, u16 mem_mask) { - if (m_in_reset) + const bool a23 = BIT(offset, 22); + const bool mmu_disable = !a23 && BIT(m_maincpu->get_fc(), 2); + const u32 mmu_reg = mmu_disable ? (m_from_reset ? 0xfffe00 : 0xfff000) : m_mmu_reg[(offset >> 20) & 3]; + + if (!mmu_disable && !machine().side_effects_disabled()) { - if (m_mmu_init && !BIT(offset, 22) && !machine().side_effects_disabled()) - m_in_reset = false; - else - offset = (offset & 0x03ffff) | 0x1c0000; + // TODO: do limit/write protect check and cause BERR on failure } - // TODO: MMU segments - m_clb->write16(space, offset & 0x1fffff, data, mem_mask); + offs_t clbaddr = offset + ((mmu_reg & 0x000fff) << 9); + clbaddr = (clbaddr & 0x1fffff) | (clbaddr & 0x100000) << 1; + m_clb->write16(clbaddr, data, mem_mask); } WRITE_LINE_MEMBER(fs3216_state::mmu_reset_w) { if (state) - { - m_in_reset = true; - m_mmu_init = false; - } + m_from_reset = true; } void fs3216_state::mmu_init_w(u16 data) { - m_mmu_init = true; + m_from_reset = BIT(data, 0); +} + +u16 fs3216_state::irq_r() +{ + // TODO + return 0xfff8; +} + +IRQ_CALLBACK_MEMBER(fs3216_state::intack) +{ + // FIXME: not all levels are vectored this way + return m_vecprom[irqline]; } READ8_MEMBER(fs3216_state::ctc_r) @@ -191,28 +256,155 @@ u16 fs3216_state::earom_store_r() return 0xffff; } -void fs3216_state::floppy_select_w(u8 data) +WRITE_LINE_MEMBER(fs3216_state::fdc_int_w) +{ + if (state) + m_floppy_status |= 0x02; + else + m_floppy_status &= 0xfd; +} + +WRITE_LINE_MEMBER(fs3216_state::fdc_drq_w) +{ + if (state) + { + m_floppy_status |= 0x01; + if (BIT(m_floppy_control, 3) && !m_fdc_dma_timer->enabled()) + { + m_fdc_dma_timer->adjust(attotime::from_hz(16_MHz_XTAL / 64)); + m_floppy_status |= 0x04; + } + } + else + { + m_floppy_status &= 0xfa; + m_fdc_dma_timer->adjust(attotime::never); + } +} + +WRITE_LINE_MEMBER(fs3216_state::fdc_hdl_w) { + if (state) + m_floppy_status |= 0x40; + else + m_floppy_status &= 0xbf; +} + +WRITE_LINE_MEMBER(fs3216_state::floppy_idx_w) +{ + if (state) + m_floppy_status |= 0x20; + else + m_floppy_status &= 0xdf; + + if (BIT(m_floppy_select, 2)) + m_fdc->ready_w(state); +} + +void fs3216_state::fdc_us_w(u8 data) +{ + m_fdc_select = data; + if (!BIT(m_floppy_select, 2)) + m_fdc->set_floppy(m_floppy[m_fdc_select]->get_device()); +} + +u16 fs3216_state::floppy_select_r(offs_t offset) +{ + if (!machine().side_effects_disabled()) + floppy_select_w(offset, 0); + return 0xffff; +} + +void fs3216_state::floppy_select_w(offs_t offset, u16 data) +{ + if (m_floppy_select == offset) + return; + + m_floppy_select = offset; + if (BIT(offset, 2)) + m_fdc->set_floppy(m_floppy[offset & 3]->get_device()); + else + m_fdc->set_floppy(m_floppy[m_fdc_select]->get_device()); +} + +void fs3216_state::floppy_control_w(u8 data) +{ + m_floppy_control = data; + + floppy_image_device *fd = m_floppy[BIT(m_floppy_select, 2) ? (m_floppy_select & 3) : m_fdc_select]->get_device(); + if (BIT(data, 5)) + { + if (fd != nullptr) + fd->mon_w(0); + m_floppy_status |= 0x10; + } + else + { + if (fd != nullptr) + fd->mon_w(1); + m_floppy_status &= 0xef; + } + + if (!BIT(data, 1)) + { + m_fdc->soft_reset(); + m_fdc_dma_count = 0; + m_fdc->tc_w(0); + } + + if (BIT(data, 3) && BIT(m_floppy_status, 0)) + { + if (!m_fdc_dma_timer->enabled()) + { + m_fdc_dma_timer->adjust(attotime::from_hz(16_MHz_XTAL / 64)); + m_floppy_status |= 0x04; + } + } + else + { + m_fdc_dma_timer->adjust(attotime::never); + m_floppy_status &= 0xfb; + } + + m_fdc->set_unscaled_clock(16_MHz_XTAL / (BIT(data, 0) ? 4 : 2)); } u8 fs3216_state::floppy_status_r() { - return 0xff; + return m_floppy_status; } -void fs3216_state::fdc_reset_w(u16 data) +TIMER_CALLBACK_MEMBER(fs3216_state::fdc_dma) { - m_fdc->soft_reset(); + if (BIT(m_floppy_control, 4)) + m_fdc_ram[m_fdc_dma_count & 0x7ff] = m_fdc->dma_r(); + else + m_fdc->dma_w(m_fdc_ram[m_fdc_dma_count & 0x7ff]); + m_floppy_status &= 0xfb; + + ++m_fdc_dma_count; + if (BIT(m_fdc_dma_count, 11)) + m_fdc->tc_w(1); } u8 fs3216_state::fdc_ram_r(offs_t offset) { - return m_fdc_ram[offset]; + if (!machine().side_effects_disabled()) + { + m_fdc_dma_count = offset; + m_fdc->tc_w(BIT(offset, 11)); + } + return m_fdc_ram[offset & 0x7ff]; } void fs3216_state::fdc_ram_w(offs_t offset, u8 data) { - m_fdc_ram[offset] = data; + if (!machine().side_effects_disabled()) + { + m_fdc_dma_count = offset; + m_fdc->tc_w(BIT(offset, 11)); + } + m_fdc_ram[offset & 0x7ff] = data; } @@ -224,33 +416,36 @@ void fs3216_state::main_map(address_map &map) void fs3216_state::clb_map(address_map &map) { map(0x000000, 0x017fff).ram(); - map(0x380000, 0x383fff).rom().region("momrom", 0); - map(0x392000, 0x392003).m(m_fdc, FUNC(upd765a_device::map)).umask16(0x00ff); - map(0x392041, 0x392041).w(FUNC(fs3216_state::floppy_select_w)); - map(0x392051, 0x392051).r(FUNC(fs3216_state::floppy_status_r)); - map(0x394680, 0x39468f).rw(FUNC(fs3216_state::ctc_r), FUNC(fs3216_state::ctc_w)).umask16(0x00ff); - map(0x394701, 0x394701).rw("dart", FUNC(z80dart_device::da_r), FUNC(z80dart_device::da_w)); - map(0x394709, 0x394709).rw("dart", FUNC(z80dart_device::ca_r), FUNC(z80dart_device::ca_w)); - map(0x394711, 0x394711).rw("dart", FUNC(z80dart_device::db_r), FUNC(z80dart_device::db_w)); - map(0x394719, 0x394719).rw("dart", FUNC(z80dart_device::cb_r), FUNC(z80dart_device::cb_w)); - map(0x3a0000, 0x3a1fff).rom().region("video", 0); - map(0x3a4001, 0x3a4001).w("crtc", FUNC(mc6845_device::address_w)); - map(0x3a4003, 0x3a4003).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w)); - map(0x3a8000, 0x3a8fff).ram().share("videoram"); // 2x M58725P - map(0x3b0000, 0x3b1fff).rom().region("comm_a", 0); - map(0x3c0000, 0x3c1fff).rom().region("comm_b", 0); - map(0x3e0000, 0x3e1fff).rom().region("wd1001_clb", 0); - map(0x3f5000, 0x3f5001).w(FUNC(fs3216_state::mmu_init_w)); - map(0x3f6000, 0x3f6001).w(FUNC(fs3216_state::fdc_reset_w)); - map(0x3f6800, 0x3f6fff).rw(FUNC(fs3216_state::fdc_ram_r), FUNC(fs3216_state::fdc_ram_w)).umask16(0x00ff); - map(0x3f7000, 0x3f7001).r(FUNC(fs3216_state::earom_store_r)); - map(0x3f7200, 0x3f7201).r(FUNC(fs3216_state::earom_recall_r)); - map(0x3f7400, 0x3f75ff).rw(m_earom, FUNC(x2212_device::read), FUNC(x2212_device::write)).umask16(0x00ff); + map(0x780000, 0x783fff).rom().region("momrom", 0); + map(0x792000, 0x792003).m(m_fdc, FUNC(upd765a_device::map)).umask16(0x00ff); + map(0x792010, 0x79201f).rw(FUNC(fs3216_state::floppy_select_r), FUNC(fs3216_state::floppy_select_w)); + map(0x792041, 0x792041).w(FUNC(fs3216_state::floppy_control_w)); + map(0x792051, 0x792051).r(FUNC(fs3216_state::floppy_status_r)); + map(0x794680, 0x79468f).rw(FUNC(fs3216_state::ctc_r), FUNC(fs3216_state::ctc_w)).umask16(0x00ff); + map(0x794701, 0x794701).rw("dart", FUNC(z80dart_device::da_r), FUNC(z80dart_device::da_w)); + map(0x794709, 0x794709).rw("dart", FUNC(z80dart_device::ca_r), FUNC(z80dart_device::ca_w)); + map(0x794711, 0x794711).rw("dart", FUNC(z80dart_device::db_r), FUNC(z80dart_device::db_w)); + map(0x794719, 0x794719).rw("dart", FUNC(z80dart_device::cb_r), FUNC(z80dart_device::cb_w)); + map(0x796000, 0x797fff).rw(FUNC(fs3216_state::fdc_ram_r), FUNC(fs3216_state::fdc_ram_w)).umask16(0x00ff); + map(0x7a0000, 0x7a1fff).rom().region("video", 0); + map(0x7a4001, 0x7a4001).w("crtc", FUNC(mc6845_device::address_w)); + map(0x7a4003, 0x7a4003).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w)); + map(0x7a8000, 0x7a8fff).ram().share("videoram"); // 2x M58725P + map(0x7b0000, 0x7b1fff).rom().region("comm_a", 0); + map(0x7c0000, 0x7c1fff).rom().region("comm_b", 0); + //map(0x7e0000, 0x7e1fff).rom().region("wd1001_clb", 0); + map(0x7f1000, 0x7f1001).r(FUNC(fs3216_state::irq_r)); + map(0x7f3000, 0x7f300f).w(FUNC(fs3216_state::mmu_reg_w)); + map(0x7f5000, 0x7f5001).w(FUNC(fs3216_state::mmu_init_w)); + map(0x7f6000, 0x7f6001).nopw(); + map(0x7f7000, 0x7f7001).r(FUNC(fs3216_state::earom_store_r)); + map(0x7f7200, 0x7f7201).r(FUNC(fs3216_state::earom_recall_r)); + map(0x7f7400, 0x7f75ff).rw(m_earom, FUNC(x2212_device::read), FUNC(x2212_device::write)).umask16(0x00ff); } void fs3216_state::wdcpu_prog_map(address_map &map) { - map(0x000, 0x7ff).rom().region("wdcpu", 0); + map(0x0000, 0x03ff).rom().region("wdcpu", 0); } void fs3216_state::wdcpu_bank_map(address_map &map) @@ -259,11 +454,17 @@ void fs3216_state::wdcpu_bank_map(address_map &map) } +static void fs3216_floppies(device_slot_interface &device) +{ + device.option_add("525dd", FLOPPY_525_DD); +} + void fs3216_state::fs3216(machine_config &config) { M68000(config, m_maincpu, 44.2368_MHz_XTAL / 8); // 5.5 MHz m_maincpu->set_addrmap(AS_PROGRAM, &fs3216_state::main_map); m_maincpu->set_reset_callback(write_line_delegate(FUNC(fs3216_state::mmu_reset_w), this)); + m_maincpu->set_irq_acknowledge_callback(FUNC(fs3216_state::intack)); ADDRESS_MAP_BANK(config, m_clb); m_clb->set_addrmap(0, &fs3216_state::clb_map); @@ -277,10 +478,20 @@ void fs3216_state::fs3216(machine_config &config) m_ctc->zc_callback<0>().set("dart", FUNC(z80dart_device::rxca_w)); m_ctc->zc_callback<0>().append("dart", FUNC(z80dart_device::txca_w)); m_ctc->zc_callback<1>().set("dart", FUNC(z80dart_device::rxtxcb_w)); + m_ctc->zc_callback<1>().append(m_ctc, FUNC(z80ctc_device::trg2)); + m_ctc->zc_callback<2>().set(m_ctc, FUNC(z80ctc_device::trg3)); Z80DART(config, "dart", 44.2368_MHz_XTAL / 8); // Z8470BPS - UPD765A(config, m_fdc, 16_MHz_XTAL / 2, true, false); + UPD765A(config, m_fdc, 16_MHz_XTAL / 2, false, false); + m_fdc->intrq_wr_callback().set(FUNC(fs3216_state::fdc_int_w)); + m_fdc->drq_wr_callback().set(FUNC(fs3216_state::fdc_drq_w)); + m_fdc->hdl_wr_callback().set(FUNC(fs3216_state::fdc_hdl_w)); + m_fdc->idx_wr_callback().set(FUNC(fs3216_state::floppy_idx_w)); + m_fdc->us_wr_callback().set(FUNC(fs3216_state::fdc_us_w)); + + for (int i = 0; i < 4; i++) + FLOPPY_CONNECTOR(config, m_floppy[i], fs3216_floppies, i < 1 ? "525dd" : nullptr, floppy_image_device::default_floppy_formats); X2212(config, m_earom); @@ -290,10 +501,11 @@ void fs3216_state::fs3216(machine_config &config) crtc.set_update_row_callback(FUNC(fs3216_state::crt_update_row), this); screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); + screen.set_color(rgb_t::green()); screen.set_raw(14.58_MHz_XTAL, 900, 0, 720, 270, 0, 250); screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update)); - n8x300_cpu_device &wdcpu(N8X300(config, "wdcpu", 20_MHz_XTAL / 2)); // N8X305I + n8x305_cpu_device &wdcpu(N8X305(config, "wdcpu", 8_MHz_XTAL)); // N8X305I wdcpu.set_addrmap(AS_PROGRAM, &fs3216_state::wdcpu_prog_map); wdcpu.set_addrmap(AS_IO, &fs3216_state::wdcpu_bank_map); } @@ -307,7 +519,7 @@ INPUT_PORTS_END // XTALs on Comm A board (1000014-01 2 Port / 1000171-01 4 Port Rev. 7; 10000065-01 Rev. 3): two K1135CM Dual Baud Rate Generators (7D, 8D) // XTALs on Comm B board (1001651-01 Rev. G): none // XTALs on Video Controller board (1000443-1 Rev. I): 14.580 MHz (1H) -// XTALs on WD-1001 CLB Disk Controller board (1473-008): 20.000 (Y1), 8.00? [somewhat defaced] (Y2) +// XTALs on WD-1001 CLB Disk Controller board (1473-008): 20.000 (Y1), 8.000 (Y2) ROM_START(fs3216) ROM_REGION16_BE(0x4000, "momrom", 0) ROM_LOAD16_BYTE("17k_1260-02_h.bin", 0x0000, 0x2000, CRC(75ed6de8) SHA1(0360548493b778995ae436da475b6356945e1872)) @@ -316,6 +528,9 @@ ROM_START(fs3216) ROM_REGION(0x100, "earom", 0) ROM_LOAD("sn1000044-08_x2212.bin", 0x000, 0x100, CRC(2bf1fec8) SHA1(e1bdda558364415131e68443013c608bb9c01451)) + ROM_REGION(0x20, "vecprom", 0) + ROM_LOAD("12j_74s288.bin", 0x00, 0x20, CRC(8f7bf087) SHA1(de785f7ab79f0e58e411ec5cbc42991d1d8486b1)) + ROM_REGION16_BE(0x2000, "comm_a", 0) ROM_LOAD16_BYTE("1896-01_c90c3cb92588a2b4bb28bcf4bb8e2023.bin", 0x0000, 0x1000, CRC(ac4cdbd2) SHA1(e448a01a9809cccfb526ac1d4e97d9be3af1e5eb)) ROM_LOAD16_BYTE("1895-01_fb20aa682a17028cdae2687fc47daef1.bin", 0x0001, 0x1000, CRC(82ebffb5) SHA1(3888b7ba07d0b25bfb9e0444215d4fa9ecd66273)) |