diff options
Diffstat (limited to 'src/mame/drivers/basf7100.cpp')
-rw-r--r-- | src/mame/drivers/basf7100.cpp | 166 |
1 files changed, 131 insertions, 35 deletions
diff --git a/src/mame/drivers/basf7100.cpp b/src/mame/drivers/basf7100.cpp index 8bab2c025d5..498d8934213 100644 --- a/src/mame/drivers/basf7100.cpp +++ b/src/mame/drivers/basf7100.cpp @@ -35,11 +35,12 @@ - COM8116 - 5.0688 MHz XTAL - Keyboard: - - 30293E-054 20-04592-054 (?) - TODO: - - The floppy is partially hooked up, everything else needs to be done + - Dump real character ROM + - Improve video emulation + - Hook up switches + - Hook up serial ports + - Hook up parallel port Notes: - Runs the BOS operating system, possibly also CP/M? @@ -49,8 +50,10 @@ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/i8255.h" +#include "machine/pic8259.h" #include "machine/wd_fdc.h" #include "imagedev/floppy.h" +#include "machine/basf7100_kbd.h" #include "emupal.h" #include "screen.h" @@ -68,16 +71,23 @@ public: basf7100_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), - m_ppi(*this, "ppi%u", 0U), m_fdccpu(*this, "fdccpu"), + m_pic(*this, "pic"), + m_ppi(*this, "ppi%u", 0U), m_fdc(*this, "fdc"), m_floppy(*this, "fdc:%u", 0), m_screen(*this, "screen"), m_palette(*this, "palette"), + m_shared_ram(*this, "shared_ram"), m_chargen(*this, "chargen"), m_bootview(*this, "bootview"), + m_cursor_col(0x00), m_cursor_row(0x00), + m_highlight(0x00), + m_roll_offset(0x00), + m_sod(0x0000), m_fdc_intrq_vector(0), - m_fdc_drq(false) + m_fdc_drq(false), + m_int_flags(0x00) { } void basf7100(machine_config &config); @@ -88,15 +98,23 @@ protected: private: required_device<z80_device> m_maincpu; - required_device_array<i8255_device, 5> m_ppi; required_device<z80_device> m_fdccpu; + required_device<pic8259_device> m_pic; + required_device_array<i8255_device, 5> m_ppi; required_device<fd1791_device> m_fdc; required_device_array<floppy_connector, 3> m_floppy; required_device<screen_device> m_screen; required_device<palette_device> m_palette; + required_shared_ptr<uint8_t> m_shared_ram; required_region_ptr<uint8_t> m_chargen; memory_view m_bootview; + enum : uint8_t + { + INT_KEYBOARD = 0x08, + INT_VBLANK = 0x10 + }; + void mem_map(address_map &map); void io_map(address_map &map); @@ -106,8 +124,15 @@ private: uint8_t mmio_r(offs_t offset); void mmio_w(offs_t offset, uint8_t data); + void keyboard_w(uint8_t data); + + void cursor_col_w(uint8_t data); + void cursor_row_w(uint8_t data); + void highlight_w(uint8_t data); + void roll_offset_w(uint8_t data); void sod_high_w(uint8_t data); void sod_low_w(uint8_t data); + void vblank_w(int state); uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); void fdc_drq_w(int state); @@ -116,12 +141,17 @@ private: void fdc_intrq_vector_w(uint8_t data); void unk_cc_w(uint8_t data); + IRQ_CALLBACK_MEMBER(maincpu_irq_callback); IRQ_CALLBACK_MEMBER(fdccpu_irq_callback); - uint8_t int_flags_r(); + uint8_t m_cursor_col; + uint8_t m_cursor_row; + uint8_t m_highlight; + uint8_t m_roll_offset; uint16_t m_sod; uint8_t m_fdc_intrq_vector; bool m_fdc_drq; + uint8_t m_int_flags; }; @@ -131,8 +161,8 @@ private: void basf7100_state::mem_map(address_map &map) { - map(0x0000, 0x7fff).ram().share("shared_ram"); - map(0x8000, 0xffff).ram(); + map(0x0000, 0x9fff).ram().share("shared_ram"); + map(0xa000, 0xffff).ram(); map(0xff00, 0xffff).rw(FUNC(basf7100_state::mmio_r), FUNC(basf7100_state::mmio_w)); map(0x0000, 0xffff).view(m_bootview); m_bootview[0](0x0000, 0x001f).mirror(0xffe0).rom().region("maincpu", 0); @@ -143,14 +173,14 @@ void basf7100_state::io_map(address_map &map) map.global_mask(0xff); map(0x00, 0x03).rw(m_ppi[0], FUNC(i8255_device::read), FUNC(i8255_device::write)); map(0x04, 0x07).rw(m_ppi[1], FUNC(i8255_device::read), FUNC(i8255_device::write)); -// map(0x08, 0x09).mirror(0x02) 8259 + map(0x08, 0x09).mirror(0x02).rw(m_pic, FUNC(pic8259_device::read), FUNC(pic8259_device::write)); map(0x0c, 0x0f).rw(m_ppi[2], FUNC(i8255_device::read), FUNC(i8255_device::write)); // map(0x10, 0x11) 8251 (primary) // map(0x12, 0x12) baud rate // map(0x14, 0x15) 8251 (secondary) // map(0x16, 0x16) baud rate // map(0x17, 0x17) rs232 flags/control - map(0x18, 0x18).r(FUNC(basf7100_state::int_flags_r)); + map(0x18, 0x18).lr8(NAME([this] () -> uint8_t { return m_int_flags; })); // map(0x1c, 0x1f) switches // map(0xb0, 0xb3) display hardware clear map(0xb8, 0xbb).rw(m_ppi[3], FUNC(i8255_device::read), FUNC(i8255_device::write)); @@ -164,9 +194,8 @@ void basf7100_state::io_map(address_map &map) void basf7100_state::fdc_mem_map(address_map &map) { - map(0x0000, 0x7fff).ram().share("shared_ram"); - map(0x8000, 0xefff).ram(); - map(0xf000, 0xfbff).ram(); + map(0x0000, 0x9fff).ram().share("shared_ram"); + map(0xa000, 0xfbff).ram(); map(0xfc00, 0xffff).rom().region("fdccpu", 0); map(0xff00, 0xffff).rw(FUNC(basf7100_state::mmio_r), FUNC(basf7100_state::mmio_w)); } @@ -185,6 +214,17 @@ void basf7100_state::fdc_io_map(address_map &map) static INPUT_PORTS_START( basf7100 ) INPUT_PORTS_END +void basf7100_state::keyboard_w(uint8_t data) +{ + // PPI OBF + m_int_flags &= ~INT_KEYBOARD; + m_int_flags |= BIT(data, 1) ? INT_KEYBOARD : 0x00; + + m_pic->ir3_w(BIT(data, 1)); + + // TODO: keyboard bell +} + //************************************************************************** // VIDEO EMULATION @@ -205,6 +245,32 @@ static GFXDECODE_START( gfx_crt8002 ) GFXDECODE_ENTRY( "chargen", 0, crt8002_charlayout, 0, 1 ) GFXDECODE_END +void basf7100_state::cursor_col_w(uint8_t data) +{ + m_cursor_col = data; +} + +void basf7100_state::cursor_row_w(uint8_t data) +{ + // 7------- graphics enable? + // -65----- unknown + // ---43210 cursor row + + m_cursor_row = data & 0x1f; +} + +void basf7100_state::highlight_w(uint8_t data) +{ + logerror("highlight = %02x\n", data); + m_highlight = data; +} + +void basf7100_state::roll_offset_w(uint8_t data) +{ + logerror("roll offset = %02x\n", data); + m_roll_offset = data; +} + void basf7100_state::sod_high_w(uint8_t data) { m_sod = (data << 8) | (m_sod & 0x00ff); @@ -218,23 +284,39 @@ void basf7100_state::sod_low_w(uint8_t data) m_sod = (m_sod & 0xff00) | ((data & 0xf0) << 0); } +void basf7100_state::vblank_w(int state) +{ + m_int_flags &= ~INT_VBLANK; + m_int_flags |= state ? INT_VBLANK : 0x00; + + m_pic->ir4_w(state); +} + uint32_t basf7100_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { + uint16_t addr = m_sod + (m_roll_offset * 16); + for (int y = 0; y < 24; y++) { for (int x = 0; x < 80; x++) { - uint16_t addr = m_sod + y * 80 + x; - uint8_t code = m_maincpu->space(AS_PROGRAM).read_byte(addr); + if (addr >= (m_sod + 0x780)) + addr = m_sod; + + uint8_t code = m_shared_ram[addr]; // draw 12 lines for (int i = 0; i < 12; i++) { uint8_t data = m_chargen[(((code & 0x7f) << 4) + i)]; + // wrong if (BIT(code, 7)) data ^= 0xff; + if (y == m_cursor_row && x == m_cursor_col) + data ^= 0xff; + // 8 pixels of the character bitmap.pix(y * 12 + i, x * 8 + 0) = BIT(data, 7) ? rgb_t::white() : rgb_t::black(); bitmap.pix(y * 12 + i, x * 8 + 1) = BIT(data, 6) ? rgb_t::white() : rgb_t::black(); @@ -245,6 +327,9 @@ uint32_t basf7100_state::screen_update(screen_device &screen, bitmap_rgb32 &bitm bitmap.pix(y * 12 + i, x * 8 + 6) = BIT(data, 1) ? rgb_t::white() : rgb_t::black(); bitmap.pix(y * 12 + i, x * 8 + 7) = BIT(data, 0) ? rgb_t::white() : rgb_t::black(); } + + // next char + addr++; } } @@ -334,24 +419,29 @@ void basf7100_state::mmio_w(offs_t offset, uint8_t data) m_maincpu->space(AS_IO).write_byte(offset, data); } -IRQ_CALLBACK_MEMBER( basf7100_state::fdccpu_irq_callback ) +IRQ_CALLBACK_MEMBER( basf7100_state::maincpu_irq_callback ) { - return m_fdc_intrq_vector; + uint32_t vector = 0; + + vector |= m_pic->acknowledge() << 16; + vector |= m_pic->acknowledge(); + vector |= m_pic->acknowledge() << 8; + + return vector; } -uint8_t basf7100_state::int_flags_r() +IRQ_CALLBACK_MEMBER( basf7100_state::fdccpu_irq_callback ) { - // 765----- unknown - // ---4---- unknown (used, needs to be set at least 2 times to continue booting) - // ----3--- unknown (used) - // -----210 unknown - - return m_screen->vblank() ? 0x10 : 0x00; + return m_fdc_intrq_vector; } void basf7100_state::machine_start() { // register for save states + save_item(NAME(m_cursor_col)); + save_item(NAME(m_cursor_row)); + save_item(NAME(m_highlight)); + save_item(NAME(m_roll_offset)); save_item(NAME(m_sod)); save_item(NAME(m_fdc_intrq_vector)); save_item(NAME(m_fdc_drq)); @@ -373,16 +463,20 @@ void basf7100_state::basf7100(machine_config &config) Z80(config, m_maincpu, 4000000); m_maincpu->set_addrmap(AS_PROGRAM, &basf7100_state::mem_map); m_maincpu->set_addrmap(AS_IO, &basf7100_state::io_map); + m_maincpu->set_irq_acknowledge_callback(FUNC(basf7100_state::maincpu_irq_callback)); Z80(config, m_fdccpu, 4000000); m_fdccpu->set_addrmap(AS_PROGRAM, &basf7100_state::fdc_mem_map); m_fdccpu->set_addrmap(AS_IO, &basf7100_state::fdc_io_map); m_fdccpu->set_irq_acknowledge_callback(FUNC(basf7100_state::fdccpu_irq_callback)); + PIC8259(config, m_pic, 0); + m_pic->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); + I8255(config, m_ppi[0]); // port a: input (switches?) - // port b: input (keyboard data) - // port c: input (keyboard strobe), output (bell) + m_ppi[0]->in_pb_callback().set("keyboard", FUNC(basf7100_kbd_device::read)); + m_ppi[0]->out_pc_callback().set(FUNC(basf7100_state::keyboard_w)); I8255(config, m_ppi[1]); // port a: output (printer data) @@ -395,12 +489,12 @@ void basf7100_state::basf7100(machine_config &config) // port c: input (auto dialer status), output (rs232 and auto dialer control) I8255(config, m_ppi[3]); - // port a: output (cursor column) - // port b: output (cursor row, graphics enable) - // port c: output (highlight mode) + m_ppi[3]->out_pa_callback().set(FUNC(basf7100_state::cursor_col_w)); + m_ppi[3]->out_pb_callback().set(FUNC(basf7100_state::cursor_row_w)); + m_ppi[3]->out_pc_callback().set(FUNC(basf7100_state::highlight_w)); I8255(config, m_ppi[4]); - // port a: output (roll offset) + m_ppi[4]->out_pa_callback().set(FUNC(basf7100_state::roll_offset_w)); m_ppi[4]->out_pb_callback().set(FUNC(basf7100_state::sod_high_w)); m_ppi[4]->out_pc_callback().set(FUNC(basf7100_state::sod_low_w)); @@ -412,6 +506,7 @@ void basf7100_state::basf7100(machine_config &config) m_screen->set_refresh_hz(60); m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); // not accurate m_screen->set_screen_update(FUNC(basf7100_state::screen_update)); + m_screen->screen_vblank().set(FUNC(basf7100_state::vblank_w)); GFXDECODE(config, "gfxdecode", "palette", gfx_crt8002); @@ -424,6 +519,10 @@ void basf7100_state::basf7100(machine_config &config) FLOPPY_CONNECTOR(config, "fdc:0", basf7100_floppies, "basf6106", floppy_image_device::default_mfm_floppy_formats); FLOPPY_CONNECTOR(config, "fdc:1", basf7100_floppies, "basf6106", floppy_image_device::default_mfm_floppy_formats); FLOPPY_CONNECTOR(config, "fdc:2", basf7100_floppies, "basf6106", floppy_image_device::default_mfm_floppy_formats); + + // keyboard + basf7100_kbd_device &keyboard(BASF7100_KBD(config, "keyboard")); + keyboard.int_handler().set(m_ppi[0], FUNC(i8255_device::pc2_w)); } @@ -437,9 +536,6 @@ ROM_START( basf7120 ) ROM_REGION(0x400, "fdccpu", 0) ROM_LOAD("19-2130-2h.u45", 0x000, 0x400, CRC(cb077c69) SHA1(dfa16082b88275442c48082aeb5f62fe1238ae3e)) // 2708 - - ROM_REGION(0x400, "keyboard", 0) - ROM_LOAD("19-2114-01e.bin", 0x000, 0x400, CRC(d694b5dd) SHA1(6262379ba565c1de072b2b21dc3141db1ec5129c)) ROM_REGION(0x50, "floppy_pal", 0) ROM_LOAD("19-2131-1.u23", 0x00, 0x28, CRC(f37ed4bc) SHA1(824b4405f396c262cf8116f85eb0b548eabb4c04)) // PAL10L8MJ |