// license:BSD-3-Clause // copyright-holders:Ryan Holtz /*************************************************************************** dpb_combiner.cpp DPB-7000/1 - Combiner Card ***************************************************************************/ #include "emu.h" #include "dpb_combiner.h" #define VERBOSE (1) #include "logmacro.h" /*****************************************************************************/ DEFINE_DEVICE_TYPE(DPB7000_COMBINER, dpb7000_combiner_card_device, "dpb_combiner", "Quantel DPB-7000 Combiner Card") //------------------------------------------------- // dpb7000_combiner_card_device - constructor //------------------------------------------------- dpb7000_combiner_card_device::dpb7000_combiner_card_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, DPB7000_COMBINER, tag, owner, clock) , m_latched_lum_sum(0) , m_latched_chr_sum(0) , m_lum_out(0) , m_chr_out(0) , m_chr_i_in(false) , m_chr_i(false) , m_palette_l(false) , m_cursor_enb(false) , m_cursor_col(false) , m_fsck(false) , m_cursor_y(0) , m_cursor_u(0) , m_cursor_v(0) , m_invert_mask(0) , m_lum(*this) , m_chr(*this) , m_fsck_timer(nullptr) , m_screen(*this, "screen") , m_mult_ge(*this, "mult_ge") // Lum I , m_mult_gd(*this, "mult_gd") // Lum II , m_mult_gc(*this, "mult_gc") // Chroma I , m_mult_gb(*this, "mult_gb") // Chroma II , m_mult_ga(*this, "mult_ga") // Ext I & II { } void dpb7000_combiner_card_device::device_start() { save_item(NAME(m_lum_in)); save_item(NAME(m_latched_lum)); save_item(NAME(m_selected_lum)); save_item(NAME(m_chr_in)); save_item(NAME(m_latched_chr)); save_item(NAME(m_selected_chr)); save_item(NAME(m_ext_in)); save_item(NAME(m_blank)); save_item(NAME(m_chr_i_in)); save_item(NAME(m_chr_i)); save_item(NAME(m_palette_l)); save_item(NAME(m_cursor_enb)); save_item(NAME(m_cursor_col)); save_item(NAME(m_fsck)); save_item(NAME(m_cursor_y)); save_item(NAME(m_cursor_u)); save_item(NAME(m_cursor_v)); save_item(NAME(m_invert_mask)); save_item(NAME(m_select_matte)); save_item(NAME(m_matte_ext)); save_item(NAME(m_matte_y)); save_item(NAME(m_matte_u)); save_item(NAME(m_matte_v)); save_item(NAME(m_blank_or_suppress)); save_item(NAME(m_output_matte_y)); save_item(NAME(m_output_matte_u)); save_item(NAME(m_output_matte_v)); save_item(NAME(m_output_matte_ext)); m_lum.resolve_safe(); m_chr.resolve_safe(); m_fsck_timer = timer_alloc(FSCK_TIMER); m_fsck_timer->adjust(attotime::never); } void dpb7000_combiner_card_device::device_reset() { memset(m_lum_in, 0, 2); memset(m_latched_lum, 0, 2); memset(m_selected_lum, 0, 2); memset(m_chr_in, 0, 2); memset(m_latched_chr, 0, 2); memset(m_selected_lum, 0, 2); memset(m_ext_in, 0, 2); memset(m_blank, 0, 2); m_chr_i_in = false; m_chr_i = false; m_palette_l = false; m_cursor_enb = false; m_cursor_col = false; m_fsck = false; memset(m_blank_or_suppress, 0, 2); memset(m_output_matte_y, 0, 2); memset(m_output_matte_u, 0, 2); memset(m_output_matte_v, 0, 2); memset(m_output_matte_ext, 0, 2); m_cursor_y = 0; m_cursor_u = 0; m_cursor_v = 0; m_invert_mask = 0; memset(m_select_matte, 0, 2); memset(m_matte_ext, 0, 2); memset(m_matte_y, 0, 2); memset(m_matte_u, 0, 2); memset(m_matte_v, 0, 2); m_fsck_timer->adjust(attotime::from_hz(clock()), 0, attotime::from_hz(clock())); } void dpb7000_combiner_card_device::device_add_mconfig(machine_config &config) { TMC28KU(config, m_mult_ge); TMC28KU(config, m_mult_gd); TMC28KU(config, m_mult_gc); TMC28KU(config, m_mult_gb); TMC28KU(config, m_mult_ga); SCREEN(config, m_screen, SCREEN_TYPE_RASTER); m_screen->set_raw(DERIVED_CLOCK(1, 1), 910, 0, 640, 525, 0, 480); m_screen->set_screen_update(FUNC(dpb7000_combiner_card_device::screen_update)); } void dpb7000_combiner_card_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) { if (id == FSCK_TIMER) { m_fsck = !m_fsck; if (m_fsck) { fsck_tick(); } } } void dpb7000_combiner_card_device::fsck_tick() { for (int i = 0; i < 2; i++) { m_latched_lum[i] = m_lum_in[i]; m_latched_chr[i] = m_chr_in[i]; m_selected_lum[i] = m_output_matte_y[i] ? m_matte_y[i] : m_latched_lum[i]; m_selected_chr[i] = m_output_matte_u[i] ? m_matte_u[i] : (m_output_matte_v[i] ? m_matte_v[i] : m_latched_chr[i]); m_selected_ext[i] = m_output_matte_ext[i] ? m_matte_ext[i] : m_ext_in[i]; } // MPY-8HUJ GA const uint8_t ext_product = m_palette_l ? (((uint16_t)m_selected_ext[0] * (uint16_t)m_selected_ext[1] + 0x80) >> 8) : 0xff; // 74LS175 FF and 74S157 FG const bool y1 = (bool)(m_palette_l ? BIT(m_invert_mask, 3) : BIT(m_invert_mask, 4)); const bool y2 = !y1; // 74S86 EE/EF/FD/FE const uint8_t a = ext_product ^ (y1 ? 0xff : 0x00); const uint8_t b = ext_product ^ (y2 ? 0xff : 0x00); // MPY-8HUJ GE const uint8_t lum1_product = ((uint16_t)m_selected_lum[0] * (uint16_t)a + 0x80) >> 8; // MPY-8HUJ GD const uint8_t lum2_product = ((uint16_t)m_selected_lum[1] * (uint16_t)b + 0x80) >> 8; // MPY-8HUJ GC const uint8_t chr1_product = ((uint16_t)m_selected_chr[0] * (uint16_t)a + 0x80) >> 8; // MPY-8HUJ GB const uint8_t chr2_product = ((uint16_t)m_selected_chr[1] * (uint16_t)b + 0x80) >> 8; // 74S283 FC/ED, 74S374 DD m_latched_lum_sum = lum1_product + lum2_product; // 74S283 FB/EC, 74S374 DC m_latched_chr_sum = chr1_product + chr2_product; m_lum_out = m_cursor_enb ? (m_cursor_col ? (m_chr_i ? m_cursor_u : m_cursor_v) : 0x7f) : m_latched_lum_sum; m_chr_out = m_cursor_enb ? (m_cursor_col ? m_cursor_y : 0x7f) : m_latched_chr_sum; m_lum(m_lum_out); m_chr(m_chr_out); m_screen->update_now(); } uint32_t dpb7000_combiner_card_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { for (int y = cliprect.min_y; y <= cliprect.max_y; y++) { uint32_t *dest = &bitmap.pix32(y, cliprect.min_x); for (int x = cliprect.min_x; x <= cliprect.max_x && x < 256; x++) { *dest++ = 0xff000000 | (m_lum_out << 16) | (m_lum_out << 8) | m_lum_out; } } return 0; } void dpb7000_combiner_card_device::reg_w(uint16_t data) { static const char* const s_const_names[16] = { "Y0", "CY", "CU", "CV", "ES", "EI", "EII", "Y7", "IS", "IY", "IU", "IV", "IIS", "IIY", "IIU", "IIV" }; LOG("%s: CPU write to Combiner Card: %s = %02x\n", machine().describe_context(), s_const_names[(data >> 10) & 0xf], (uint8_t)data); switch ((data >> 10) & 0xf) { case 1: // CY m_cursor_y = (uint8_t)data; break; case 2: // CU m_cursor_u = (uint8_t)data; break; case 3: // CV m_cursor_v = (uint8_t)data; break; case 4: // ES m_invert_mask = (uint8_t)data; update_matte_selects(); break; case 5: // EI m_matte_ext[0] = (uint8_t)data; break; case 6: // EII m_matte_ext[1] = (uint8_t)data; break; case 8: // IS m_select_matte[0] = BIT(data, 0); update_matte_selects(); break; case 9: // IY m_matte_y[0] = (uint8_t)data; break; case 10: // IU m_matte_u[0] = (uint8_t)data; break; case 11: // IV m_matte_v[0] = (uint8_t)data; break; case 12: // IIS m_select_matte[1] = BIT(data, 0); update_matte_selects(); break; case 13: // IIY m_matte_y[1] = (uint8_t)data; break; case 14: // IIU m_matte_u[1] = (uint8_t)data; break; case 15: // IIV m_matte_v[1] = (uint8_t)data; break; } } void dpb7000_combiner_card_device::lum1_w(uint8_t data) { m_lum_in[0] = data; } void dpb7000_combiner_card_device::lum2_w(uint8_t data) { m_lum_in[1] = data; } void dpb7000_combiner_card_device::blank1(int state) { m_blank[0] = (bool)state; update_matte_selects(); } void dpb7000_combiner_card_device::blank2(int state) { m_blank[1] = (bool)state; update_matte_selects(); } void dpb7000_combiner_card_device::chr1_w(uint8_t data) { m_chr_in[0] = data; } void dpb7000_combiner_card_device::chr2_w(uint8_t data) { m_chr_in[1] = data; } void dpb7000_combiner_card_device::chr_flag_w(int state) { m_chr_i_in = (bool)state; update_matte_selects(); } void dpb7000_combiner_card_device::ext1_w(uint8_t data) { m_ext_in[0] = BIT(m_invert_mask, 4) ? (data ^ 0xff) : data; } void dpb7000_combiner_card_device::ext2_w(uint8_t data) { m_ext_in[1] = BIT(m_invert_mask, 4) ? (data ^ 0xff) : data; } void dpb7000_combiner_card_device::palette_l_w(int state) { m_palette_l = (bool)state; update_matte_selects(); } void dpb7000_combiner_card_device::cursor_enb_w(int state) { m_cursor_enb = (bool)state; } void dpb7000_combiner_card_device::cursor_col_w(int state) { m_cursor_col = (bool)state; } void dpb7000_combiner_card_device::update_matte_selects() { for (int i = 0; i < 2; i++) { m_blank_or_suppress[i] = m_select_matte[i] || m_blank[i]; m_output_matte_y[i] = m_blank_or_suppress[i] && m_palette_l; m_output_matte_u[i] = m_output_matte_y[i] && m_chr_i; m_output_matte_v[i] = m_output_matte_y[i] && !m_chr_i; m_output_matte_ext[i] = !BIT(m_invert_mask, i) && m_blank[i]; } }