mirror of
https://github.com/holub/mame
synced 2025-06-01 18:41:47 +03:00
Fix tdv2100 display edge-cases (#13707)
* Align switch polarity and fix default settings in TDV-2100 series terminal module * Fix attribute edge-case behaviour for TDV-2100 series * Fix bitwise-operation spacing
This commit is contained in:
Frodevan
GitHub
parent
5afa496553
commit
a69586c194
@ -182,7 +182,7 @@ void tandberg_tdv2100_disp_logic_device::device_reset()
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m_uart->write_xr(0);
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clear_key_handler();
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bool force_on_line = BIT(m_dsw_u39->read(), 5);
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bool force_on_line = !BIT(m_dsw_u39->read(), 5);
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set_uart_state_from_switches();
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if(force_on_line)
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{
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@ -218,13 +218,13 @@ void tandberg_tdv2100_disp_logic_device::char_to_display(uint8_t byte)
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else
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{
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// Ordinary input
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if((byte&0x7f) < 0x20 || (byte&0x7f) == 0x7f)
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if((byte & 0x7f) < 0x20 || (byte & 0x7f) == 0x7f)
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{
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// Control characters
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int u39 = m_dsw_u39->read();
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bool auto_roll_up = !BIT(u39, 8);
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bool clear_ascii_hs_by_cleark = ((u39&0x003) == 0x001);
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switch(byte&0x7f)
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bool clear_ascii_hs_by_cleark = ((u39 & 0x003) == 0x001);
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switch(byte & 0x7f)
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{
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// STX, Turn off video
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case 0x02:
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@ -284,7 +284,7 @@ void tandberg_tdv2100_disp_logic_device::char_to_display(uint8_t byte)
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// CURD, Cursor down
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case 0x0b:
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if((m_cursor_row&0x18) != 24)
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if((m_cursor_row & 0x18) != 24)
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{
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place_cursor(m_cursor_row+1, m_cursor_col);
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}
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@ -292,7 +292,7 @@ void tandberg_tdv2100_disp_logic_device::char_to_display(uint8_t byte)
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// LF, Move cursor to next line
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case 0x0a:
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if((m_cursor_row&0x18) == 24 && auto_roll_up)
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if((m_cursor_row & 0x18) == 24 && auto_roll_up)
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{
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char_to_display(0x0c);
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}
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@ -311,7 +311,7 @@ void tandberg_tdv2100_disp_logic_device::char_to_display(uint8_t byte)
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// ROLUP, Roll text up
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case 0x0c:
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if((m_page_roll&0x18) != 24)
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if((m_page_roll & 0x18) != 24)
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{
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m_page_roll++;
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}
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@ -386,7 +386,7 @@ void tandberg_tdv2100_disp_logic_device::data_to_display(uint8_t byte)
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{
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if(m_underline_input)
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{
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byte = byte|0x80;
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byte = byte | 0x80;
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}
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m_vram[get_ram_addr(m_cursor_row, m_cursor_col)] = byte;
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@ -396,7 +396,7 @@ void tandberg_tdv2100_disp_logic_device::data_to_display(uint8_t byte)
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void tandberg_tdv2100_disp_logic_device::advance_cursor()
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{
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bool auto_cr_lf = BIT(m_dsw_u61->read(), 2);
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if((m_cursor_col&0x4f) != 79 || auto_cr_lf)
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if((m_cursor_col & 0x4f) != 79 || auto_cr_lf)
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{
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place_cursor(m_cursor_row, m_cursor_col+1);
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}
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@ -407,17 +407,17 @@ void tandberg_tdv2100_disp_logic_device::advance_cursor()
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void tandberg_tdv2100_disp_logic_device::place_cursor(int row, int col)
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{
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bool in_eol_region = ((m_cursor_col&0x48) == 72);
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bool in_eol_region = ((m_cursor_col & 0x48) == 72);
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m_cursor_col = col&0x7f;
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m_cursor_row = row&0x1f;
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m_cursor_col = col & 0x7f;
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m_cursor_row = row & 0x1f;
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if((m_cursor_col&0x48) == 72 && !in_eol_region && !m_speed_check)
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if((m_cursor_col & 0x48) == 72 && !in_eol_region && !m_speed_check)
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{
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// End of line warning beep
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char_to_display(0x07);
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}
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if((m_cursor_col&0x50) == 80)
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if((m_cursor_col & 0x50) == 80)
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{
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// End of line action
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char_to_display(0x0d);
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@ -427,7 +427,7 @@ void tandberg_tdv2100_disp_logic_device::place_cursor(int row, int col)
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void tandberg_tdv2100_disp_logic_device::clear_key_handler()
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{
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bool clear_ascii_hs_by_cleark = ((m_dsw_u39->read()&0x003) == 0x001);
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bool clear_ascii_hs_by_cleark = ((m_dsw_u39->read() & 0x003) == 0x001);
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m_write_errorl_cb(0);
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if(clear_ascii_hs_by_cleark)
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{
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@ -439,13 +439,13 @@ void tandberg_tdv2100_disp_logic_device::clear_key_handler()
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int tandberg_tdv2100_disp_logic_device::get_ram_addr(int row, int col)
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{
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int abs_row = (row&0x1f) + m_page_roll;
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return ((abs_row<<7) + (col&0x7f) + (m_addr_offsets[abs_row]<<4))&0x7ff;
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int abs_row = (row & 0x1f) + m_page_roll;
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return ((abs_row << 7) + (col & 0x7f) + (m_addr_offsets[abs_row] << 4)) & 0x7ff;
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}
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void tandberg_tdv2100_disp_logic_device::erase_row(int row)
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{
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for(int col = 0; col<80; col++)
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for(int col = 0; col < 80; col++)
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{
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m_vram[get_ram_addr(row, col)] = 0;
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}
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@ -489,16 +489,15 @@ void tandberg_tdv2100_disp_logic_device::update_attribute(int at_row, int at_col
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{
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m_attribute = 0;
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}
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int const vram_data = m_vram[get_ram_addr(char_row, char_col)];
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if(vram_data&0x80)
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{
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m_attribute = (vram_data&0x70)>>4;
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}
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if(char_row == at_row && char_col == at_col)
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{
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return;
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}
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int const vram_data = m_vram[get_ram_addr(char_row, char_col)];
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if(BIT(vram_data, 7))
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{
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m_attribute = (vram_data & 0x70) >> 4;
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}
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}
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if(first_round)
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{
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@ -513,9 +512,9 @@ uint32_t tandberg_tdv2100_disp_logic_device::screen_update(screen_device &screen
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rgb_t const *const palette = m_palette->palette()->entry_list_raw();
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int u61 = m_dsw_u61->read();
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bool extend_dot7 = ((u61&0x003) == 0x001);
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bool extend_dot7 = ((u61 & 0x003) == 0x001);
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bool underline_mode = BIT(u61, 3);
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bool blinking_cursor = ((u61&0x030) == 0x010);
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bool blinking_cursor = ((u61 & 0x030) == 0x020);
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bool blank_attr_chars = !BIT(u61, 6);
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bool blank_ctrl_chars = !BIT(u61, 8);
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bool block_cursor = BIT(u61, 9);
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@ -546,6 +545,18 @@ uint32_t tandberg_tdv2100_disp_logic_device::screen_update(screen_device &screen
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int const vram_address = get_ram_addr(char_row_nr, in_line_char_nr);
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bool const is_cursor = (m_cursor_col == in_line_char_nr && m_cursor_row == char_row_nr);
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// Character-clock events
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uint8_t vram_data = 0x00;
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uint8_t const latched_attribute = m_attribute;
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if(in_line_char_nr >= 0 && in_line_char_nr < 80)
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{
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vram_data = m_vram[vram_address];
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if(BIT(vram_data, 7))
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{
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m_attribute = (vram_data & 0x70) >> 4;
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}
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}
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for(int line = 0; line < 14; line++)
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{
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// This is at the start of a 9-dot raster-line segment in a single character
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@ -555,15 +566,14 @@ uint32_t tandberg_tdv2100_disp_logic_device::screen_update(screen_device &screen
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if(in_line_char_nr >= 0 && in_line_char_nr < 80)
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{
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bool const draw_cursor = (is_cursor && (line == 12 || block_cursor) && (!blinking_cursor || cursor_blink_strobe));
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int const vram_data = m_vram[vram_address];
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// Pattern generator & character blanking
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if(m_video_enable && (vram_data&0x60 || !blank_ctrl_chars) && !(vram_data&0x80 && blank_attr_chars))
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if(m_video_enable && (vram_data & 0x60 || !blank_ctrl_chars) && !(BIT(vram_data, 7) && blank_attr_chars))
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{
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data = m_font[((vram_data&0x7f)<<4) + line];
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data = m_font[((vram_data & 0x7f) << 4) + line];
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if(extend_dot7)
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{
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dot_nr8 = data&0x01;
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dot_nr8 = data & 0x01;
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}
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}
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@ -571,49 +581,42 @@ uint32_t tandberg_tdv2100_disp_logic_device::screen_update(screen_device &screen
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if(underline_mode)
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{
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// Note: The underline in underline-mode is not affected by blanking!
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if((vram_data&0x80) && line == 13)
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if(BIT(vram_data, 7) && line == 13)
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{
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data = 0xff;
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dot_nr8 = 0x01;
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}
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}
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else if(m_video_enable) // attribute mode
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else if(m_video_enable && !BIT(vram_data, 7)) // attribute mode
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{
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if(vram_data&0x80)
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if(latched_attribute == 2)
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{
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m_attribute = (vram_data&0x70)>>4;
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// Low intensity
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extra_intensity = 0;
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}
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else
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else if(latched_attribute == 3 && blink_strobe && !draw_cursor)
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{
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if(m_attribute == 2)
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{
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// Low intensity
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extra_intensity = 0;
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}
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else if(m_attribute == 3 && blink_strobe && !draw_cursor)
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{
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// Blink
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data = 0x00;
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dot_nr8 = 0x00;
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}
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else if(m_attribute == 4)
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{
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// Inverse
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data = ~data;
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dot_nr8 = ~dot_nr8;
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}
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else if(m_attribute == 5 && line == 13)
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{
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// Underline
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data = 0xff;
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dot_nr8 = 0x01;
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}
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else if(m_attribute == 6)
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{
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// Invissible
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data = 0x00;
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dot_nr8 = 0x00;
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}
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// Blink
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data = 0x00;
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dot_nr8 = 0x00;
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}
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else if(latched_attribute == 4)
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{
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// Inverse
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data = ~data;
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dot_nr8 = ~dot_nr8;
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}
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else if(latched_attribute == 5 && line == 13)
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{
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// Underline
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data = 0xff;
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dot_nr8 = 0x01;
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}
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else if(latched_attribute == 6)
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{
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// Invisible
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data = 0x00;
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dot_nr8 = 0x00;
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}
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}
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@ -631,9 +634,9 @@ uint32_t tandberg_tdv2100_disp_logic_device::screen_update(screen_device &screen
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auto *pix = &bitmap.pix(chr_y_pos + line, chr_x_pos);
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for(int dot = 0; dot < 8; dot++)
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{
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pix[dot] = palette[BIT(data, 7 - dot)<<extra_intensity];
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pix[dot] = palette[BIT(data, 7 - dot) << extra_intensity];
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}
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pix[8] = palette[BIT(dot_nr8, 0)<<extra_intensity];
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pix[8] = palette[BIT(dot_nr8, 0) << extra_intensity];
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}
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}
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}
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@ -648,7 +651,7 @@ uint32_t tandberg_tdv2100_disp_logic_device::screen_update(screen_device &screen
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void tandberg_tdv2100_disp_logic_device::update_rs232_lamps()
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{
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m_write_waitl_cb(m_data_terminal_ready && !m_rx_handshake);
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bool need_tx_for_on_line_led = ((m_dsw_u39->read()&0x0c0) == 0x080);
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bool need_tx_for_on_line_led = ((m_dsw_u39->read() & 0x0c0) == 0x040);
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m_write_onlil_cb(m_data_terminal_ready && m_rx_handshake && (m_tx_handshake || !need_tx_for_on_line_led));
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}
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@ -689,7 +692,7 @@ void tandberg_tdv2100_disp_logic_device::rs232_dcd_w(int state)
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{
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m_write_carl_cb(state);
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bool dcd_handshake = ((m_dsw_u39->read()&0x00c) == 0x008);
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bool dcd_handshake = ((m_dsw_u39->read() & 0x00c) == 0x008);
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if(dcd_handshake)
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{
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m_rx_handshake = state;
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@ -700,7 +703,7 @@ void tandberg_tdv2100_disp_logic_device::rs232_dcd_w(int state)
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void tandberg_tdv2100_disp_logic_device::rs232_dsr_w(int state)
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{
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bool dcd_handshake = ((m_dsw_u39->read()&0x00c) == 0x008);
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bool dcd_handshake = ((m_dsw_u39->read() & 0x00c) == 0x008);
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if(!dcd_handshake)
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{
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bool auto_rx_handshake = BIT(m_sw_rs232_settings->read(), 4);
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@ -794,7 +797,7 @@ void tandberg_tdv2100_disp_logic_device::set_uart_state_from_switches()
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{
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int baud_setting = m_sw_rs232_baud->read();
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int u46_divisor = (baud_setting == 0x0) ? 15 : 11;
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int u22_divisor = 256>>baud_setting;
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int u22_divisor = 256 >> baud_setting;
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m_uart_clock->set_unscaled_clock(DOT_CLOCK_3 / (u46_divisor * u22_divisor));
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int rs232_settings = m_sw_rs232_settings->read();
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@ -809,7 +812,7 @@ void tandberg_tdv2100_disp_logic_device::set_uart_state_from_switches()
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// Resolves Rx flow-control logic
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void tandberg_tdv2100_disp_logic_device::clock_on_line_flip_flop()
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{
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bool force_on_line = BIT(m_dsw_u39->read(), 5);
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bool force_on_line = !BIT(m_dsw_u39->read(), 5);
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if(force_on_line)
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{
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m_data_terminal_ready = true;
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@ -837,7 +840,7 @@ void tandberg_tdv2100_disp_logic_device::clock_on_line_flip_flop()
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update_all_rs232_signal_paths();
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update_rs232_lamps();
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bool hold_line_key_for_rts = ((m_dsw_u73->read()&0x3) == 0x1);
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bool hold_line_key_for_rts = ((m_dsw_u73->read() & 0x3) == 0x2);
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if(hold_line_key_for_rts && m_data_terminal_ready && m_line_key_held && !m_trans_key_held)
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{
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clock_transmit_flip_flop();
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@ -847,7 +850,7 @@ void tandberg_tdv2100_disp_logic_device::clock_on_line_flip_flop()
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// Resolves Tx flow-control logic
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void tandberg_tdv2100_disp_logic_device::clock_transmit_flip_flop()
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{
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bool force_on_line = BIT(m_dsw_u39->read(), 5);
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bool force_on_line = !BIT(m_dsw_u39->read(), 5);
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if(force_on_line)
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{
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m_request_to_send = true;
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@ -876,7 +879,7 @@ void tandberg_tdv2100_disp_logic_device::clock_transmit_flip_flop()
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INPUT_CHANGED_MEMBER(tandberg_tdv2100_disp_logic_device::rs232_lock_changed)
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{
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bool force_on_line = BIT(m_dsw_u39->read(), 5);
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bool force_on_line = !BIT(m_dsw_u39->read(), 5);
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if(force_on_line)
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{
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// Use conditional catch to force lines active
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@ -892,8 +895,8 @@ INPUT_CHANGED_MEMBER(tandberg_tdv2100_disp_logic_device::rs232_lock_changed)
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void tandberg_tdv2100_disp_logic_device::process_keyboard_char(uint8_t key)
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{
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m_data_kbd = key&0x7f;
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if(key&0x80)
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m_data_kbd = key & 0x7f;
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if(BIT(key, 7))
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{
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m_data_pending_kbd = true;
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bool tty_mode = BIT(m_dsw_u39->read(), 4);
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@ -1015,7 +1018,7 @@ static INPUT_PORTS_START( tdv2115l )
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PORT_CONFNAME(0x08, 0x08, "RS-232 Internal local echo when on-line (for half duplex)") PORT_CHANGED_MEMBER(DEVICE_SELF, FUNC(tandberg_tdv2100_disp_logic_device::rs232_changed), 0) // EXT. ECHO [YES/NO]
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PORT_CONFSETTING(0x08, DEF_STR( Off ))
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PORT_CONFSETTING(0x00, DEF_STR( On ))
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PORT_CONFNAME(0x10, 0x00, "RS-232 Automatic RTS with CTS") PORT_CHANGED_MEMBER(DEVICE_SELF, FUNC(tandberg_tdv2100_disp_logic_device::rs232_changed), 0) // AUTO RFS [NO/YES]
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PORT_CONFNAME(0x10, 0x00, "RS-232 Automatic CTS with RTS") PORT_CHANGED_MEMBER(DEVICE_SELF, FUNC(tandberg_tdv2100_disp_logic_device::rs232_changed), 0) // AUTO RFS [NO/YES]
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PORT_CONFSETTING(0x00, DEF_STR( No ))
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PORT_CONFSETTING(0x10, DEF_STR( Yes ))
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PORT_CONFNAME(0x20, 0x00, "RS-232 Automatic DSR with DTR") PORT_CHANGED_MEMBER(DEVICE_SELF, FUNC(tandberg_tdv2100_disp_logic_device::rs232_changed), 0) // AUTO DSR [NO/YES]
|
||||
@ -1033,11 +1036,11 @@ static INPUT_PORTS_START( tdv2115l )
|
||||
PORT_DIPSETTING(0x010, "TTY mode (no CPU)") // 5: OFF
|
||||
PORT_DIPSETTING(0x000, "CPU mode (CPU module required)") // 5: ON
|
||||
PORT_DIPNAME(0x020, 0x020, "DTR/RTS signals") PORT_CHANGED_MEMBER(DEVICE_SELF, FUNC(tandberg_tdv2100_disp_logic_device::rs232_lock_changed), 0)
|
||||
PORT_DIPSETTING(0x020, "Permanently asserted") // 6: OFF
|
||||
PORT_DIPSETTING(0x000, "Affected by LINE/TRANS keys") // 6: ON
|
||||
PORT_DIPNAME(0x0c0, 0x040, "Require RTS + CTS for ON LINE lamp") PORT_CHANGED_MEMBER(DEVICE_SELF, FUNC(tandberg_tdv2100_disp_logic_device::rs232_changed), 0)
|
||||
PORT_DIPSETTING(0x040, DEF_STR( Off )) // 7: OFF 8: ON
|
||||
PORT_DIPSETTING(0x080, DEF_STR( On )) // 7: ON 8: OFF
|
||||
PORT_DIPSETTING(0x020, "Affected by LINE/TRANS keys") // 6: OFF
|
||||
PORT_DIPSETTING(0x000, "Permanently asserted") // 6: ON
|
||||
PORT_DIPNAME(0x0c0, 0x040, "ON LINE lamp lit when") PORT_CHANGED_MEMBER(DEVICE_SELF, FUNC(tandberg_tdv2100_disp_logic_device::rs232_changed), 0)
|
||||
PORT_DIPSETTING(0x040, "Only if both RTS and CTS") // 7: OFF 8: ON
|
||||
PORT_DIPSETTING(0x080, "RTS regardless of CTS") // 7: ON 8: OFF
|
||||
PORT_DIPNAME(0x100, 0x000, "Automatic page-roll after end of page")
|
||||
PORT_DIPSETTING(0x100, DEF_STR( Off )) // 9: OFF
|
||||
PORT_DIPSETTING(0x000, DEF_STR( On )) // 9: ON
|
||||
@ -1047,8 +1050,8 @@ static INPUT_PORTS_START( tdv2115l )
|
||||
|
||||
PORT_START("dsw_u73")
|
||||
PORT_DIPNAME(0x3, 0x1, "Automatic RTS with DTR")
|
||||
PORT_DIPSETTING(0x2, DEF_STR( Off )) // 1: ON 2: OFF
|
||||
PORT_DIPSETTING(0x1, DEF_STR( On )) // 1: OFF 2: ON
|
||||
PORT_DIPSETTING(0x1, DEF_STR( Off )) // 1: OFF 2: ON
|
||||
PORT_DIPSETTING(0x2, DEF_STR( On )) // 1: ON 2: OFF
|
||||
PORT_DIPNAME(0xc, 0x8, "Current-Loop RxD line (Unused)")
|
||||
PORT_DIPSETTING(0x4, "10V zener-diode in series") // 3: OFF 4: ON
|
||||
PORT_DIPSETTING(0x8, "47 Ohm series resistor") // 3: ON 4: OFF
|
||||
@ -1064,8 +1067,8 @@ static INPUT_PORTS_START( tdv2115l )
|
||||
PORT_DIPSETTING(0x008, "Undeline mode") // 4: OFF
|
||||
PORT_DIPSETTING(0x000, "Attribute mode") // 4: ON
|
||||
PORT_DIPNAME(0x030, 0x020, "Cursor blinking")
|
||||
PORT_DIPSETTING(0x020, DEF_STR( Off )) // 5: ON 6: OFF
|
||||
PORT_DIPSETTING(0x010, DEF_STR( On )) // 5: OFF 6: ON
|
||||
PORT_DIPSETTING(0x010, DEF_STR( Off )) // 5: OFF 6: ON
|
||||
PORT_DIPSETTING(0x020, DEF_STR( On )) // 5: ON 6: OFF
|
||||
PORT_DIPNAME(0x040, 0x000, "Hide Attribute-changes or Underlined chars")
|
||||
PORT_DIPSETTING(0x040, DEF_STR( Off )) // 7: OFF
|
||||
PORT_DIPSETTING(0x000, DEF_STR( On )) // 7: ON
|
||||
@ -1075,7 +1078,8 @@ static INPUT_PORTS_START( tdv2115l )
|
||||
PORT_DIPNAME(0x100, 0x000, "Hide ASCII control characters")
|
||||
PORT_DIPSETTING(0x100, DEF_STR( Off )) // 9: OFF
|
||||
PORT_DIPSETTING(0x000, DEF_STR( On )) // 9: ON
|
||||
// NOTE: CPU module needed to write these to display RAM, as well as a ROM set with a 4th font ROM
|
||||
// NOTE: These characters can only be written to display memory by the CPU module.
|
||||
// Then to display these characters, a 4th font ROM will also be needed.
|
||||
PORT_DIPNAME(0x200, 0x000, "Cursor shape")
|
||||
PORT_DIPSETTING(0x200, "Block") // 10: OFF
|
||||
PORT_DIPSETTING(0x000, "Line") // 10: ON
|
||||
|
||||
Loading…
Reference in New Issue
Block a user