diff options
Diffstat (limited to 'src/mame/machine/atarigen.cpp')
-rw-r--r-- | src/mame/machine/atarigen.cpp | 478 |
1 files changed, 0 insertions, 478 deletions
diff --git a/src/mame/machine/atarigen.cpp b/src/mame/machine/atarigen.cpp index a4c337dba07..fb804be3507 100644 --- a/src/mame/machine/atarigen.cpp +++ b/src/mame/machine/atarigen.cpp @@ -10,7 +10,6 @@ #include "emu.h" #include "cpu/m6502/m6502.h" -#include "video/atarimo.h" #include "atarigen.h" @@ -326,483 +325,6 @@ void atari_sound_comm_device::delayed_6502_write(int data) -//************************************************************************** -// VAD VIDEO CONTROLLER DEVICE -//************************************************************************** - -// device type definition -DEFINE_DEVICE_TYPE(ATARI_VAD, atari_vad_device, "atarivad", "Atari VAD") - -//------------------------------------------------- -// atari_vad_device - constructor -//------------------------------------------------- - -atari_vad_device::atari_vad_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, ATARI_VAD, tag, owner, clock), - device_video_interface(mconfig, *this), - m_scanline_int_cb(*this), - m_alpha_tilemap(*this, "alpha"), - m_playfield_tilemap(*this, "playfield"), - m_playfield2_tilemap(*this, "playfield2"), - m_mob(*this, "mob"), - m_eof_data(*this, "eof"), - m_scanline_int_timer(nullptr), - m_tilerow_update_timer(nullptr), - m_eof_timer(nullptr), - m_palette_bank(0), - m_pf0_xscroll_raw(0), - m_pf0_yscroll(0), - m_pf1_xscroll_raw(0), - m_pf1_yscroll(0), - m_mo_xscroll(0), - m_mo_yscroll(0) -{ -} - - -//------------------------------------------------- -// control_write: Does the bulk of the word for an I/O -// write. -//------------------------------------------------- - -WRITE16_MEMBER(atari_vad_device::control_write) -{ - uint16_t newword = m_control[offset]; - COMBINE_DATA(&newword); - internal_control_write(offset, newword); -} - - -//------------------------------------------------- -// control_read: Handles an I/O read from the video controller. -//------------------------------------------------- - -READ16_MEMBER(atari_vad_device::control_read) -{ - logerror("vc_r(%02X)\n", offset); - - // a read from offset 0 returns the current scanline - // also sets bit 0x4000 if we're in VBLANK - if (offset == 0) - { - int result = screen().vpos(); - if (result > 255) - result = 255; - if (result > screen().visible_area().max_y) - result |= 0x4000; - return result; - } - else - return m_control[offset]; -} - - -//------------------------------------------------- -// alpha_w: Generic write handler for alpha RAM. -//------------------------------------------------- - -WRITE16_MEMBER(atari_vad_device::alpha_w) -{ - m_alpha_tilemap->write16(space, offset, data, mem_mask); -} - - -//------------------------------------------------- -// playfield_upper_w: Generic write handler for -// upper word of split playfield RAM. -//------------------------------------------------- - -WRITE16_MEMBER(atari_vad_device::playfield_upper_w) -{ - m_playfield_tilemap->write16_ext(space, offset, data, mem_mask); - if (m_playfield2_tilemap != nullptr) - m_playfield2_tilemap->write16_ext(space, offset, data, mem_mask); -} - - -//------------------------------------------------- -// playfield_latched_lsb_w: Generic write handler for -// lower word of playfield RAM with a latch in the LSB of the -// upper word. -//------------------------------------------------- - -WRITE16_MEMBER(atari_vad_device::playfield_latched_lsb_w) -{ - m_playfield_tilemap->write16(space, offset, data, mem_mask); - if ((m_control[0x0a] & 0x80) != 0) - m_playfield_tilemap->write16_ext(space, offset, m_control[0x1d], uint16_t(0x00ff)); -} - - -//------------------------------------------------- -// playfield_latched_msb_w: Generic write handler for -// lower word of playfield RAM with a latch in the MSB of the -// upper word. -//------------------------------------------------- - -WRITE16_MEMBER(atari_vad_device::playfield_latched_msb_w) -{ - m_playfield_tilemap->write16(space, offset, data, mem_mask); - if ((m_control[0x0a] & 0x80) != 0) - m_playfield_tilemap->write16_ext(space, offset, m_control[0x1c], uint16_t(0xff00)); -} - - -//------------------------------------------------- -// playfield2_latched_msb_w: Generic write handler for -// lower word of second playfield RAM with a latch in the MSB -// of the upper word. -//------------------------------------------------- - -WRITE16_MEMBER(atari_vad_device::playfield2_latched_msb_w) -{ - m_playfield2_tilemap->write16(space, offset, data, mem_mask); - if ((m_control[0x0a] & 0x80) != 0) - m_playfield2_tilemap->write16_ext(space, offset, m_control[0x1c], uint16_t(0xff00)); -} - - -//------------------------------------------------- -// device_start: Start up the device -//------------------------------------------------- - -void atari_vad_device::device_start() -{ - // verify configuration - if (m_playfield_tilemap == nullptr) - throw emu_fatalerror("Playfield tilemap not found!"); - if (m_eof_data == nullptr) - throw emu_fatalerror("EOF data not found!"); - - // resolve callbacks - m_scanline_int_cb.resolve_safe(); - - // allocate timers - m_scanline_int_timer = timer_alloc(TID_SCANLINE_INT); - m_tilerow_update_timer = timer_alloc(TID_TILEROW_UPDATE); - m_eof_timer = timer_alloc(TID_EOF); - - // register for save states - save_item(NAME(m_palette_bank)); // which palette bank is enabled - save_item(NAME(m_pf0_xscroll_raw)); // playfield 1 xscroll raw value - save_item(NAME(m_pf0_yscroll)); // playfield 1 yscroll - save_item(NAME(m_pf1_xscroll_raw)); // playfield 2 xscroll raw value - save_item(NAME(m_pf1_yscroll)); // playfield 2 yscroll - save_item(NAME(m_mo_xscroll)); // sprite xscroll - save_item(NAME(m_mo_yscroll)); // sprite xscroll -} - - -//------------------------------------------------- -// device_reset: Handle a device reset by -// clearing the interrupt lines and states -//------------------------------------------------- - -void atari_vad_device::device_reset() -{ - // share extended memory between the two tilemaps - if (m_playfield2_tilemap != nullptr) - m_playfield2_tilemap->extmem().set(m_playfield_tilemap->extmem()); - - // reset the state - m_palette_bank = 0; - m_pf0_xscroll_raw = m_pf1_xscroll_raw = 0; - m_pf0_yscroll = m_pf1_yscroll = 0; - m_mo_xscroll = m_mo_yscroll = 0; - memset(m_control, 0, sizeof(m_control)); - - // start the timers - m_tilerow_update_timer->adjust(screen().time_until_pos(0)); - m_eof_timer->adjust(screen().time_until_pos(0)); -} - - -//------------------------------------------------- -// device_timer: Handle device-specific timer -// calbacks -//------------------------------------------------- - -void atari_vad_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) -{ - switch (id) - { - case TID_SCANLINE_INT: - m_scanline_int_cb(ASSERT_LINE); - break; - - case TID_TILEROW_UPDATE: - update_tilerow(timer, param); - break; - - case TID_EOF: - eof_update(timer); - break; - } -} - - -//------------------------------------------------- -// internal_control_write: Handle writes to the -// control registers and EOF updates -//------------------------------------------------- - -void atari_vad_device::internal_control_write(offs_t offset, uint16_t newword) -{ - // switch off the offset - uint16_t oldword = m_control[offset]; - m_control[offset] = newword; - switch (offset) - { - // - // VAD register map: - // - // 00 = HDW_ENABLE - // A000 = enable other VAD params - // E000 = enable other VAD params but disable update from ALPHA RAM - // 01 = HDW_VSY_LD (standard = 0x795) - // 0FF8 = V_SY_S - // 0007 = V_SY_E - // 02 = HDW_VBL_LD (standard = 0xAEF) - // FE00 = VLAST - // 01FF = V_BL_S - // 03 = HDW_VINT - // 04 = HDW_HSY_LD (standard = 0x5EEF) - // FC00 = H_SY_E/2 - // 03FF = H_SY_S - // 05 = HDW_HBL_LD (relief = 0x72AC, batman/thunderj = 0xBEB1, shuuz/offtwall = 0xCEB1) - // F000 = LB_CLR - // 0800 = H_BL_E/16 - // 0400 = H_BL_E/1 - // 03FF = H_BL_S - // 06 = HDW_SLIP_LD (relief/batman/shuuz = 0x6F05, shuuz/offtwall = 0x0F05) - // 7F00 = SLIP_S - // 0080 = SLIP_E_SE1 - // 007F = SLIP_E - // 07 = HDW_APDMA_LD (relief/batman/shuuz = 0xBE84, shuuz = 0xB90E, offtwall = 0xB90D) - // C000 = OPFPIC - // 3800 = PF_HRESET/16 - // 0780 = PFAT - // 0070 = AL_HRESET (depending on ALHSIZ) - // 000F = ALPHA_DMA - // 08 = HDW_PMBASE_LD (relief/batman/shuuz = 0x0519, shuuz/offtwall = 0x49B4) - // E000 = P1BASE/0x2000 - // 1C00 = P2BASE/0x2000 - // 0380 = PABASE/0x2000 - // 0040 = PMASK - // 003E = MOBASE/0x800 - // 0001 = MOMASK - // 09 = HDW_ALBASE_LD (relief/batman/shuuz = 0x061F, shuuz/offtwall = 0x017F) - // 0400 = OPMINUS1 - // 03C0 = ALBASE/0x1000 - // 003F = SLIPBASE/0x80 - // 0A = HDW_OPT_LD (relief/batman/shuuz = 0x4410, shuuz = 0x0250, offtwall = 0x0A10) - // 8000 = OPFHSIZ - subtract 1 from PF2 attribute horizontal stamp address - // 4000 = OPIUM - playfield 2 enable - // 2000 = OLS_EN - linescroll enable - // 1000 = OSLPINK - split links enable - // 0800 = OSLORAM - slow MO DMA cycles - // 0400 = O_DCDMA - enable double time color RAM DMA cycles - // 0200 = O_DVDMA - enable double time video RAM DMA cycles - // 0100 = OADROEN - tristate address bus - // 0080 = OAS_EN - enable autostore of playfield attributes - // 0040 = OCRDWE - enable 8-bit color RAM - // 0020 = OVRDTACK - wait for VRAM DMA on writes - // 0010 = OCRDTACK - wait for CRAM DMA on writes - // 0008 = OALHSIZ - alpha horiz stamp size (0=8) - // 0004 = OPFHSIZ - PF horiz stamp size (0=8) - // 0002 = OPFVSIZ - PF vertical stamp size (0=8) - // 0001 = OMOVSIZ - MO vertical stamp size (0=8) - // 10 = HDW_MOCON (MOB chip MOB code) - // 11 = HDW_PCON (MOB chip PF code) - // 12 = HDW_GRCON (MOB chip GR code) - // 13 = MO_hscroll (9) - // 14 = PF1_hscroll (A) - // 15 = PF2_hscroll (B) - // 16 = MO_vscroll (D) - // 17 = PF1_vscroll (E) - // 18 = PF2_vscroll (F) - // - // 3efffe = reset to wrong configuration? - // - - case 0: -//if (oldword != newword) printf("Word 0 = %04X\n", newword); - break; - - // set the scanline interrupt here - case 0x03: - if (oldword != newword || !m_scanline_int_timer->enabled()) - m_scanline_int_timer->adjust(screen().time_until_pos(newword & 0x1ff)); - break; - - // latch enable - case 0x0a: - // check for palette banking - if (m_palette_bank != (((newword & 0x0400) >> 10) ^ 1)) - { - screen().update_partial(screen().vpos()); - m_palette_bank = ((newword & 0x0400) >> 10) ^ 1; - } -//if ((oldword & ~0x0080) != (newword & ~0x0080)) printf("Latch control = %04X\n", newword); - break; - - // indexed parameters - case 0x10: case 0x11: case 0x12: case 0x13: - case 0x14: case 0x15: case 0x16: case 0x17: - case 0x18: case 0x19: case 0x1a: case 0x1b: - update_parameter(newword); - break; - - // scanline IRQ ack here - case 0x1e: - m_scanline_int_cb(CLEAR_LINE); - break; - - // log anything else - default: - if (oldword != newword) - logerror("vc_w(%02X, %04X) ** [prev=%04X]\n", offset, newword, oldword); - break; - } -} - - -//------------------------------------------------- -// update_pf_xscrolls: Update the playfield -// scroll values. -//------------------------------------------------- - -inline void atari_vad_device::update_pf_xscrolls() -{ - m_playfield_tilemap->set_scrollx(0, m_pf0_xscroll_raw + ((m_pf1_xscroll_raw) & 7)); - if (m_playfield2_tilemap != nullptr) - m_playfield2_tilemap->set_scrollx(0, m_pf1_xscroll_raw + 4); -} - - -//------------------------------------------------- -// update_parameter: Update parameters, shared -// between end-of-frame, tilerow updates, and -// direct control writes. -//------------------------------------------------- - -void atari_vad_device::update_parameter(uint16_t newword) -{ - switch (newword & 15) - { - case 9: - m_mo_xscroll = (newword >> 7) & 0x1ff; - if (m_mob != nullptr) - m_mob->set_xscroll(m_mo_xscroll); - break; - - case 10: - m_pf1_xscroll_raw = (newword >> 7) & 0x1ff; - update_pf_xscrolls(); - break; - - case 11: - m_pf0_xscroll_raw = (newword >> 7) & 0x1ff; - update_pf_xscrolls(); - break; - - case 13: - m_mo_yscroll = (newword >> 7) & 0x1ff; - if (m_mob != nullptr) - m_mob->set_yscroll(m_mo_yscroll); - break; - - case 14: - m_pf1_yscroll = (newword >> 7) & 0x1ff; - if (m_playfield2_tilemap != nullptr) - m_playfield2_tilemap->set_scrolly(0, m_pf1_yscroll); - break; - - case 15: - m_pf0_yscroll = (newword >> 7) & 0x1ff; - m_playfield_tilemap->set_scrolly(0, m_pf0_yscroll); - break; - } -} - - -//------------------------------------------------- -// update_tilerow: Fetch parameters stored at -// the end of the current tilerow, which affect -// rowscrolling. -//------------------------------------------------- - -void atari_vad_device::update_tilerow(emu_timer &timer, int scanline) -{ - // skip if out of bounds, or not enabled - if (scanline <= screen().visible_area().max_y && (m_control[0x0a] & 0x2000) != 0 && m_alpha_tilemap != nullptr) - { - // iterate over non-visible alpha tiles in this row - int offset = scanline / 8 * 64 + 48 + 2 * (scanline % 8); - int data0 = m_alpha_tilemap->basemem_read(offset++); - int data1 = m_alpha_tilemap->basemem_read(offset++); - - // force an update if we have data - if (scanline > 0 && ((data0 | data1) & 15) != 0) - screen().update_partial(scanline - 1); - - // write the data - if ((data0 & 15) != 0) - update_parameter(data0); - if ((data1 & 15) != 0) - update_parameter(data1); - } - - // update the timer to go off at the start of the next row - scanline += ((m_control[0x0a] & 0x2000) != 0) ? 1 : 8; - if (scanline >= screen().height()) - scanline = 0; - timer.adjust(screen().time_until_pos(scanline), scanline); -} - - -//------------------------------------------------- -// eof_update: Callback that slurps up data and -// feeds it into the video controller registers -// every refresh. -//------------------------------------------------- - -void atari_vad_device::eof_update(emu_timer &timer) -{ - // echo all the commands to the video controller - for (int i = 0; i < 0x1c; i++) - if (m_eof_data[i] != 0) - internal_control_write(i, m_eof_data[i]); - - // update the scroll positions -/* atarimo_set_xscroll(0, m_mo_xscroll); - atarimo_set_yscroll(0, m_mo_yscroll); - - update_pf_xscrolls(); - - m_playfield_tilemap->set_scrolly(0, m_pf0_yscroll); - if (m_playfield2_tilemap != nullptr) - m_playfield2_tilemap->set_scrolly(0, m_pf1_yscroll);*/ - timer.adjust(screen().time_until_pos(0)); - - // use this for debugging the video controller values -#if 0 - if (machine().input().code_pressed(KEYCODE_8)) - { - static FILE *out; - if (!out) out = fopen("scroll.log", "w"); - if (out) - { - for (i = 0; i < 64; i++) - fprintf(out, "%04X ", data[i]); - fprintf(out, "\n"); - } - } -#endif -} - - - /*************************************************************************** OVERALL INIT ***************************************************************************/ |