diff options
Diffstat (limited to 'src/mame/drivers/ti990_4.cpp')
-rw-r--r-- | src/mame/drivers/ti990_4.cpp | 370 |
1 files changed, 0 insertions, 370 deletions
diff --git a/src/mame/drivers/ti990_4.cpp b/src/mame/drivers/ti990_4.cpp deleted file mode 100644 index 22520495a9a..00000000000 --- a/src/mame/drivers/ti990_4.cpp +++ /dev/null @@ -1,370 +0,0 @@ -// license:LGPL-2.1+ -// copyright-holders:Michael Zapf -/* - ti990/4 driver - - We emulate a basic ti990/4 board, with a FD800 disk controller and an 733 - ASR terminal. A little floppy-based software for this computer is - available thanks to efforts by Dave Pitts: mostly, Forth and TX990. - - - Board setup options: - 8kb of DRAM (onboard option, with optional parity): base 0x0000 or 0x2000 - 4 banks of 512 bytes of ROM or SRAM: base 0x0000, 0x0800, 0xF000 or 0xF800 - power-up vector: 0x0000 (level 0) or 0xFFFC (load) - optional memerr interrupt (level 2) - optional power fail interrupt (level 1) - optional real-time clock interrupt (level 5 or 7) - - - Setup for the emulated system: - 0x0000: 8kb on-board DRAM + 24kb extension RAM (total 32kb) - 0xF800: 512 bytes SRAM - 0xFA00: 512 bytes SRAM (or empty?) - 0xFC00: 512 bytes self-test ROM - 0xFE00: 512 bytes loader ROM - power-up vector: 0xFFFC (load) - - Note that only interrupt levels 3-7 are supported by the board (8-15 are not wired). - -TODO: -* finish ASR emulation -* programmer panel -* emulate other devices: card reader, printer - - Original implementation: Raphael Nabet - - Rewritten by Michael Zapf 2014 -*/ - -#include "emu.h" -#include "cpu/tms9900/tms9900.h" - -#include "video/911_vdt.h" -#include "sound/beep.h" -#include "video/733_asr.h" - -#include "bus/ti99x/990_dk.h" - - -class ti990_4_state : public driver_device -{ -public: - ti990_4_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag), - m_maincpu(*this, "maincpu"), - m_fd800(*this, "fd800") { } - - void ti990_4v(machine_config &config); - void ti990_4(machine_config &config); - - void init_ti990_4(); - void init_ti990_4v(); - -private: - DECLARE_READ8_MEMBER( panel_read ); - DECLARE_WRITE8_MEMBER( panel_write ); - DECLARE_WRITE8_MEMBER( external_operation ); - DECLARE_READ8_MEMBER( interrupt_level ); - DECLARE_WRITE_LINE_MEMBER( fd_interrupt ); - DECLARE_WRITE_LINE_MEMBER( asrkey_interrupt ); - DECLARE_WRITE_LINE_MEMBER( vdtkey_interrupt ); - DECLARE_WRITE_LINE_MEMBER( line_interrupt ); - - DECLARE_MACHINE_RESET(ti990_4); - - void crumap(address_map &map); - void crumap_v(address_map &map); - void memmap(address_map &map); - - void hold_load(); - void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; - int m_intlines; - int m_int_level; - emu_timer* m_nmi_timer; - void reset_int_lines(); - void set_int_line(int line, int state); - - bool m_ckon_state; - - // Connected devices - required_device<tms9900_device> m_maincpu; - required_device<fd800_legacy_device> m_fd800; -}; - -enum -{ - NMI_TIMER_ID = 1 -}; - -void ti990_4_state::hold_load() -{ - m_maincpu->set_input_line(INT_9900_LOAD, ASSERT_LINE); - logerror("ti990_4: Triggering LOAD interrupt\n"); - m_nmi_timer->adjust(attotime::from_msec(100)); -} - -/* - LOAD interrupt trigger callback -*/ -void ti990_4_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) -{ - m_maincpu->set_input_line(INT_9900_LOAD, CLEAR_LINE); - logerror("ti990_4: Released LOAD interrupt\n"); -} - -READ8_MEMBER( ti990_4_state::panel_read ) -{ - if (offset == 11 || offset == 14) - return 1; - - return 0; -} - -WRITE8_MEMBER( ti990_4_state::panel_write ) -{ - logerror("ti990_4: writing to panel @CRU %04x: %02x\n", offset<<1, data); -} - -void ti990_4_state::set_int_line(int line, int state) -{ - if (state) - m_intlines |= (1 << line); - else - m_intlines &= ~(1 << line); - - if (m_intlines != 0) - { - m_int_level = 0; - while ((m_intlines & (1 << m_int_level))==0) m_int_level++; - logerror("ti990_4: Setting int level to %x\n", m_int_level); - m_maincpu->set_input_line(INT_9900_INTREQ, ASSERT_LINE); - } - else - m_maincpu->set_input_line(INT_9900_INTREQ, CLEAR_LINE); -} - -void ti990_4_state::reset_int_lines() -{ - m_intlines = 0; -} - -/* - Callback from the floppy controller. -*/ -WRITE_LINE_MEMBER(ti990_4_state::fd_interrupt) -{ - set_int_line(7, state); -} - -/* - Connection to VDT -*/ -WRITE_LINE_MEMBER(ti990_4_state::vdtkey_interrupt) -{ - set_int_line(3, state); -} - -WRITE_LINE_MEMBER(ti990_4_state::line_interrupt) -{ - if (m_ckon_state) set_int_line(5, state); -} - -/* - Callback from the terminal. -*/ -WRITE_LINE_MEMBER(ti990_4_state::asrkey_interrupt) -{ - set_int_line(6, state); -} - -WRITE8_MEMBER( ti990_4_state::external_operation ) -{ - static char const *const extop[8] = { "inv1", "inv2", "IDLE", "RSET", "inv3", "CKON", "CKOF", "LREX" }; - switch (offset) - { - case IDLE_OP: - return; - case RSET_OP: - m_ckon_state = false; - // clear controller panel and smi fault LEDs - break; - case CKON_OP: - m_ckon_state = true; - break; - case CKOF_OP: - m_ckon_state = false; - set_int_line(5, 0); - break; - case LREX_OP: - // TODO: Verify this - hold_load(); - break; - - default: - logerror("ti99_4x: External operation %s not implemented on TI-990/4 board\n", extop[offset]); - } -} - -READ8_MEMBER( ti990_4_state::interrupt_level ) -{ - return m_int_level; -} - -/* - Memory map - see description above -*/ - -void ti990_4_state::memmap(address_map &map) -{ - map(0x0000, 0x7fff).ram(); /* dynamic RAM */ - map(0x8000, 0xf7ff).noprw(); /* reserved for expansion */ - map(0xf800, 0xfbff).ram(); /* static RAM? */ - map(0xfc00, 0xffff).rom(); /* LOAD ROM */ -} - - -/* - CRU map - - 0x0000-0x1EFF: user devices - 0x1F00-0x1F3F: CRU interrupt + expansion control - 0x1F40-0x1F5F: TILINE coupler interrupt control - 0x1F60-0x1F9F: reserved - 0x1FA0-0x1FBF: memory mapping and memory protect - 0x1FC0-0x1FDF: internal interrupt control - 0x1FF0-0x1FFF: front panel - - Default user map: - 0x0000-0x001f: 733 ASR (int 6) - 0x0020-0x003f: PROM programmer (wired to int 15, unused) - 0x0040-0x005f: 804 card reader (int 4) - 0x0060-0x007f: line printer (wired to int 14, unused) - 0x0080-0x00bf: FD800 floppy controller (int 7) - 0x00c0-0x00ff: VDT1 (int 3 - wired to int 11, unused) - 0x0100-0x013f: VDT2, or CRU expansion (int ??? - wired to int 10, unused) - 0x0140-0x017f: VDT3 (int ??? - wired to int 9, unused) -*/ - -void ti990_4_state::crumap(address_map &map) -{ - map(0x0000, 0x001f).rw("asr733", FUNC(asr733_device::cru_r), FUNC(asr733_device::cru_w)); - map(0x0080, 0x00bf).rw(m_fd800, FUNC(fd800_legacy_device::cru_r), FUNC(fd800_legacy_device::cru_w)); - map(0x1fe0, 0x1fff).rw(FUNC(ti990_4_state::panel_read), FUNC(ti990_4_state::panel_write)); -} - -void ti990_4_state::crumap_v(address_map &map) -{ - map(0x0080, 0x00bf).rw(m_fd800, FUNC(fd800_legacy_device::cru_r), FUNC(fd800_legacy_device::cru_w)); - map(0x0100, 0x011f).rw("vdt911", FUNC(vdt911_device::cru_r), FUNC(vdt911_device::cru_w)); - map(0x1fe0, 0x1fff).rw(FUNC(ti990_4_state::panel_read), FUNC(ti990_4_state::panel_write)); -} - - -/* static const floppy_interface ti990_4_floppy_interface = -{ - FLOPPY_STANDARD_8_DSSD, - LEGACY_FLOPPY_OPTIONS_NAME(fd800), - nullptr -}; */ - -MACHINE_RESET_MEMBER(ti990_4_state,ti990_4) -{ - hold_load(); - reset_int_lines(); - m_ckon_state = false; - m_maincpu->set_ready(ASSERT_LINE); -} - -void ti990_4_state::init_ti990_4() -{ - m_nmi_timer = timer_alloc(NMI_TIMER_ID); -} - -void ti990_4_state::ti990_4(machine_config &config) -{ - /* basic machine hardware */ - /* TMS9900 CPU @ 3.0(???) MHz */ - TMS9900(config, m_maincpu, 3000000); - m_maincpu->set_addrmap(AS_PROGRAM, &ti990_4_state::memmap); - m_maincpu->set_addrmap(AS_IO, &ti990_4_state::crumap); - m_maincpu->extop_cb().set(FUNC(ti990_4_state::external_operation)); - m_maincpu->intlevel_cb().set(FUNC(ti990_4_state::interrupt_level)); - - MCFG_MACHINE_RESET_OVERRIDE(ti990_4_state, ti990_4 ) - - // Terminal - asr733_device& term(ASR733(config, "asr733", 0)); - term.keyint_cb().set(FUNC(ti990_4_state::asrkey_interrupt)); - term.lineint_cb().set(FUNC(ti990_4_state::line_interrupt)); - - // Floppy controller - TI99X_FD800(config, "fd800", 0).int_cb().set(FUNC(ti990_4_state::fd_interrupt)); - - // TODO: Add floppy drives -} - -void ti990_4_state::ti990_4v(machine_config &config) -{ - /* basic machine hardware */ - /* TMS9900 CPU @ 3.0(???) MHz */ - TMS9900(config, m_maincpu, 3000000); - m_maincpu->set_addrmap(AS_PROGRAM, &ti990_4_state::memmap); - m_maincpu->set_addrmap(AS_IO, &ti990_4_state::crumap_v); - m_maincpu->extop_cb().set(FUNC(ti990_4_state::external_operation)); - m_maincpu->intlevel_cb().set(FUNC(ti990_4_state::interrupt_level)); - - // VDT 911 terminal - vdt911_device& term(VDT911(config, "vdt911", 0)); - term.keyint_cb().set(FUNC(ti990_4_state::vdtkey_interrupt)); - term.lineint_cb().set(FUNC(ti990_4_state::line_interrupt)); - - // Floppy controller - TI99X_FD800(config, "fd800", 0).int_cb().set(FUNC(ti990_4_state::fd_interrupt)); - - // TODO: Add floppy drives -} - -/* - ROM loading -*/ -ROM_START(ti990_4) - /*CPU memory space*/ - ROM_REGION16_BE(0x10000, "maincpu",0) - -#if 0 - /* ROM set 945121-5: "733 ASR ROM loader with self test (prototyping)" - (cf 945401-9701 pp. 1-19) */ - - /* test ROM */ - ROMX_LOAD("94519209.u39", 0xFC00, 0x100, CRC(0a0b0c42), ROM_NIBBLE | ROM_SHIFT_NIBBLE_HI | ROM_SKIP(1)) - ROMX_LOAD("94519210.u55", 0xFC00, 0x100, CRC(d078af61), ROM_NIBBLE | ROM_SHIFT_NIBBLE_LO | ROM_SKIP(1)) - ROMX_LOAD("94519211.u61", 0xFC01, 0x100, CRC(6cf7d4a0), ROM_NIBBLE | ROM_SHIFT_NIBBLE_HI | ROM_SKIP(1)) - ROMX_LOAD("94519212.u78", 0xFC01, 0x100, CRC(d9522458), ROM_NIBBLE | ROM_SHIFT_NIBBLE_LO | ROM_SKIP(1)) - - /* LOAD ROM */ - ROMX_LOAD("94519113.u3", 0xFE00, 0x100, CRC(8719b04e), ROM_NIBBLE | ROM_SHIFT_NIBBLE_HI | ROM_SKIP(1)) - ROMX_LOAD("94519114.u4", 0xFE00, 0x100, CRC(72a040e0), ROM_NIBBLE | ROM_SHIFT_NIBBLE_LO | ROM_SKIP(1)) - ROMX_LOAD("94519115.u6", 0xFE01, 0x100, CRC(9ccf8cca), ROM_NIBBLE | ROM_SHIFT_NIBBLE_HI | ROM_SKIP(1)) - ROMX_LOAD("94519116.u7", 0xFE01, 0x100, CRC(fa387bf3), ROM_NIBBLE | ROM_SHIFT_NIBBLE_LO | ROM_SKIP(1)) - -#else - /* ROM set 945121-4(?): "Floppy disc loader with self test" (cf 945401-9701 pp. 1-19) */ - ROM_LOAD16_WORD("ti9904.rom", 0xFC00, 0x400, CRC(691e7d19) SHA1(58d9bed80490fdf71c743bfd3077c70840b7df8c)) -#endif - - ROM_REGION(asr733_device::chr_region_len, asr733_chr_region, ROMREGION_ERASEFF) -ROM_END - -ROM_START(ti990_4v) - /*CPU memory space*/ - ROM_REGION16_BE(0x10000, "maincpu",0) - ROM_LOAD16_WORD("ti9904.rom", 0xFC00, 0x400, CRC(691e7d19) SHA1(58d9bed80490fdf71c743bfd3077c70840b7df8c)) - - /* VDT911 character definitions */ - ROM_REGION(vdt911_device::chr_region_len, vdt911_chr_region, ROMREGION_ERASEFF) -ROM_END - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS -COMP( 1976, ti990_4, 0, 0, ti990_4, 0, ti990_4_state, init_ti990_4, "Texas Instruments", "TI Model 990/4 Microcomputer System", MACHINE_NOT_WORKING | MACHINE_NO_SOUND ) -COMP( 1976, ti990_4v, ti990_4, 0, ti990_4v, 0, ti990_4_state, init_ti990_4, "Texas Instruments", "TI Model 990/4 Microcomputer System with Video Display Terminal", MACHINE_NOT_WORKING | MACHINE_NO_SOUND ) |