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https://github.com/holub/mame
synced 2025-04-23 08:49:55 +03:00
vt240: WIP (nw)
This commit is contained in:
cracyc
parent
b300c33d34
commit
33c89ccdfb
@ -60,6 +60,7 @@ public:
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m_palette(*this, "palette"),
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m_rom(*this, "maincpu"),
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m_video_ram(*this, "vram"),
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m_monitor(*this, "monitor"),
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m_lk201(*this, "lk201"){ }
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required_device<cpu_device> m_maincpu;
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@ -72,6 +73,7 @@ public:
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required_device<palette_device> m_palette;
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required_region_ptr<UINT16> m_rom;
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required_shared_ptr<UINT16> m_video_ram;
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required_ioport m_monitor;
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optional_device<lk201_device> m_lk201;
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DECLARE_WRITE_LINE_MEMBER(write_keyboard_clock);
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@ -144,7 +146,7 @@ WRITE_LINE_MEMBER(vt240_state::i8085_rdy_w)
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READ_LINE_MEMBER(vt240_state::i8085_sid_r)
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{
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return !m_t11;
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return m_t11 ? CLEAR_LINE : ASSERT_LINE;
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}
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UPD7220_DISPLAY_PIXELS_MEMBER( vt240_state::hgdc_draw )
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@ -152,7 +154,7 @@ UPD7220_DISPLAY_PIXELS_MEMBER( vt240_state::hgdc_draw )
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const rgb_t *palette = m_palette->palette()->entry_list_raw();
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int xi, gfx1, gfx2;
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UINT8 pen;
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UINT8 vom;
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if(!BIT(m_reg0, 7))
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{
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@ -163,10 +165,11 @@ UPD7220_DISPLAY_PIXELS_MEMBER( vt240_state::hgdc_draw )
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gfx1 = m_video_ram[(address & 0x7fff) >> 1];
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gfx2 = m_video_ram[((address & 0x7fff) + 0x8000) >> 1];
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bool color = m_monitor->read() ? true : false;
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for(xi=0;xi<16;xi++)
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{
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pen = ((gfx1 >> xi) & 1) + ((gfx2 >> xi) & 1);
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bitmap.pix32(y, x + xi) = palette[pen];
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vom = BIT(gfx1, xi) | (BIT(gfx2, xi) << 1) | ((m_reg0 & 3) << 2);
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bitmap.pix32(y, x + xi) = palette[color ? (vom + 16) : vom];
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}
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}
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@ -188,6 +191,11 @@ READ8_MEMBER(vt240_state::i8085_comm_r)
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{
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case 0:
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return m_i8085_out;
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case 2:
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m_i8085->set_input_line(I8085_RST65_LINE, CLEAR_LINE);
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m_i8085->set_input_line(INPUT_LINE_RESET, PULSE_LINE);
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m_t11 = 1;
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break;
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}
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return 0xff;
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}
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@ -202,9 +210,9 @@ WRITE8_MEMBER(vt240_state::i8085_comm_w)
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m_i8085->set_input_line(I8085_RST65_LINE, ASSERT_LINE);
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break;
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case 2:
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m_i8085->set_input_line(I8085_RST65_LINE, CLEAR_LINE);
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m_i8085->set_input_line(INPUT_LINE_RESET, PULSE_LINE);
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m_t11 = 1;
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m_i8085->set_input_line(I8085_RST65_LINE, CLEAR_LINE);
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break;
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}
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}
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@ -220,7 +228,7 @@ WRITE8_MEMBER(vt240_state::mem_map_cs_w)
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READ8_MEMBER(vt240_state::ctrl_r)
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{
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return m_mem_map_sel | (m_i8085_rdy << 6) | (m_t11 << 7);
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return m_mem_map_sel | ((m_lb ? 0 : 1) << 3) | (m_i8085_rdy << 6) | (m_t11 << 7);
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}
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WRITE8_MEMBER(vt240_state::mem_map_sel_w)
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@ -267,32 +275,37 @@ WRITE8_MEMBER(vt240_state::patmult_w)
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WRITE8_MEMBER(vt240_state::vpat_w)
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{
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m_vpat = BITSWAP8(data, 0, 1, 2, 3, 4, 5, 6, 7);
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m_vpat = data;
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m_patcnt = m_patmult;
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m_patidx = 0;
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m_patidx = 7;
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}
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READ8_MEMBER(vt240_state::vom_r)
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{
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return m_vom[offset];
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if(!BIT(m_reg0, 2))
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return m_vom[offset];
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return 0;
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}
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WRITE8_MEMBER(vt240_state::vom_w)
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{
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m_vom[offset] = data;
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if(!BIT(m_reg0, 2))
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{
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m_vom[offset] = data;
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data = ~BITSWAP8(data, 0, 1, 2, 3, 4, 5, 6, 7);
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m_palette->set_pen_color(offset, pal2bit(data >> 6), pal2bit(data >> 6), pal2bit(data >> 6));
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m_palette->set_pen_color((offset + 16), pal2bit(data >> 0), pal2bit(data >> 2), pal2bit(data >> 4));
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}
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}
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READ16_MEMBER(vt240_state::vram_r)
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{
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UINT8 *video_ram = (UINT8 *)(&m_video_ram[0]);
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if(space.debugger_access())
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return m_video_ram[offset & 0x7fff];
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return m_video_ram[offset & 0x3fff];
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if(!BIT(m_reg0, 3))
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{
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offset <<= 1;
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offset = ((offset & 0x30000) >> 1) | (offset & 0xffff);
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offset = BIT(offset, 16) | (offset & 0xfffe);
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return video_ram[offset & 0xffff] & m_mask;
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offset = ((offset & 0x18000) >> 1) | (offset & 0x3fff);
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return m_video_ram[offset & 0x3fff];
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}
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return 0;
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}
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@ -314,23 +327,21 @@ WRITE16_MEMBER(vt240_state::vram_w)
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else
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data &= 0xff;
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}
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offset &= 0xffff;
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UINT8 chr = data;
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if(BIT(m_reg1, 2))
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chr = video_ram[offset & 0xffff];
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chr = video_ram[offset];
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else if(BIT(m_reg0, 4))
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{
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if(BIT(m_reg0, 6))
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{
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if(!BIT(m_reg0, 7))
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chr = 0;
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else
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chr = BITSWAP8(m_vpat, m_patidx, m_patidx, m_patidx, m_patidx, m_patidx, m_patidx, m_patidx, m_patidx);
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chr = BITSWAP8(m_vpat, m_patidx, m_patidx, m_patidx, m_patidx, m_patidx, m_patidx, m_patidx, m_patidx);
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if(m_patcnt-- == 0)
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{
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m_patcnt = m_patmult;
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if(++m_patidx > 7)
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m_patidx = 0;
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if(m_patidx-- == 0)
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m_patidx = 7;
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}
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}
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else
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@ -341,21 +352,40 @@ WRITE16_MEMBER(vt240_state::vram_w)
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int ps = ~m_lu & 3;
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for(int i = 0; i <= (ps >> 1); i++)
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{
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if(ps == 2)
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if(ps == 0)
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i++;
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UINT8 mem = video_ram[(offset & 0x7fff) + (0x8000 * i)];
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switch(m_lu >> 6)
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{
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case 0:
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break;
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case 1:
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chr |= mem;
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break;
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case 2:
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logerror("invalid logic unit mode 2\n");
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break;
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case 3:
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chr ^= mem;
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break;
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}
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UINT8 out = 0, ifore = BIT(m_lu, (i ? 5 : 4)), iback = BIT(m_lu, (i ? 3 : 2));
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for(int j = 0; j < 8; j++)
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out |= BIT(chr, j) ? (ifore << j) : (iback << j);
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logerror("%x %x %x %x %x\n", chr, out, data, ifore, iback);
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if(!BIT(m_reg0, 3))
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data = (chr & ~m_mask) | (video_ram[(offset & 0x7fff) + (0x8000 * i)] & m_mask);
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out = (out & ~m_mask) | (mem & m_mask);
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else
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data = (chr & data) | (video_ram[(offset & 0x7fff) + (0x8000 * i)] & ~data);
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video_ram[(offset & 0x7fff) + (0x8000 * i)] = data;
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out = (out & data) | (mem & ~data);
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video_ram[(offset & 0x7fff) + (0x8000 * i)] = out;
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}
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return;
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}
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if(!BIT(m_reg0, 3))
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data = (chr & ~m_mask) | (video_ram[offset & 0xffff] & m_mask);
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data = (chr & ~m_mask) | (video_ram[offset] & m_mask);
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else
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data = (chr & ~data) | (video_ram[offset & 0xffff] & data);
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video_ram[offset & 0xffff] = data;
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data = (chr & data) | (video_ram[offset] & ~data);
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video_ram[offset] = data;
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}
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WRITE8_MEMBER(vt240_state::mask_w)
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@ -475,6 +505,13 @@ static GFXDECODE_START( vt240 )
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GFXDECODE_ENTRY( "charcpu", 0x338*10-3, vt240_chars_8x10, 0, 8 )
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GFXDECODE_END
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static INPUT_PORTS_START( vt240 )
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PORT_START("monitor")
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PORT_CONFNAME(0x01, 0x01, "Monitor Type")
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PORT_CONFSETTING(0x00, "Monochrome")
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PORT_CONFSETTING(0x01, "Color")
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INPUT_PORTS_END
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static MACHINE_CONFIG_START( vt240, vt240_state )
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MCFG_CPU_ADD("maincpu", T11, XTAL_7_3728MHz) // confirm
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MCFG_CPU_PROGRAM_MAP(vt240_mem)
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@ -498,7 +535,7 @@ static MACHINE_CONFIG_START( vt240, vt240_state )
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MCFG_SCREEN_SIZE(640, 480)
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MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
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MCFG_SCREEN_UPDATE_DEVICE("upd7220", upd7220_device, screen_update)
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MCFG_PALETTE_ADD_MONOCHROME_HIGHLIGHT("palette")
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MCFG_PALETTE_ADD("palette", 32)
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MCFG_GFXDECODE_ADD("gfxdecode", "palette", vt240)
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MCFG_DEVICE_ADD("upd7220", UPD7220, XTAL_4MHz / 4)
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@ -605,7 +642,7 @@ ROM_START( vt240 )
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ROM_END
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/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
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COMP( 1983, vt240, 0, 0, vt240, 0, driver_device, 0, "Digital Equipment Corporation", "VT240", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
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COMP( 1983, vt240, 0, 0, vt240, vt240, driver_device, 0, "Digital Equipment Corporation", "VT240", MACHINE_NOT_WORKING )
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//COMP( 1983, vt241, 0, 0, vt220, vt220, driver_device, 0, "Digital Equipment Corporation", "VT241", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
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// NOTE: the only difference between VT240 and VT241 is the latter comes with a VR241 Color monitor, while the former comes with a mono display; the ROMs and operation are identical.
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COMP( 1983, mc7105, 0, 0, mc7105, 0, driver_device, 0, "Elektronika", "MC7105", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
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COMP( 1983, mc7105, 0, 0, mc7105, vt240, driver_device, 0, "Elektronika", "MC7105", MACHINE_NOT_WORKING )
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