diff options
Diffstat (limited to 'src/mame/video/apple2.c')
-rw-r--r-- | src/mame/video/apple2.c | 1540 |
1 files changed, 1540 insertions, 0 deletions
diff --git a/src/mame/video/apple2.c b/src/mame/video/apple2.c new file mode 100644 index 00000000000..195fed4ce8f --- /dev/null +++ b/src/mame/video/apple2.c @@ -0,0 +1,1540 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/*************************************************************************** + + video/apple2.c + +***************************************************************************/ + +#include "emu.h" +#include "includes/apple2.h" +#include "machine/ram.h" + +#include "video/apple2.h" + +/***************************************************************************/ + + +#define BLACK 0 +#define DKRED 1 +#define DKBLUE 2 +#define PURPLE 3 +#define DKGREEN 4 +#define DKGRAY 5 +#define BLUE 6 +#define LTBLUE 7 +#define BROWN 8 +#define ORANGE 9 +#define GRAY 10 +#define PINK 11 +#define GREEN 12 +#define YELLOW 13 +#define AQUA 14 +#define WHITE 15 + +#define ALWAYS_REFRESH 0 +#define PROFILER_VIDEOTOUCH PROFILER_USER3 + +/*************************************************************************** + HELPERS +***************************************************************************/ + +/*------------------------------------------------- + effective_a2 - calculates the effective a2 + register +-------------------------------------------------*/ + +inline UINT32 apple2_state::effective_a2() +{ + return m_flags & m_a2_videomask; +} + + +/*------------------------------------------------- + compute_video_address - performs funky Apple II + video address lookup +-------------------------------------------------*/ + +UINT32 apple2_state::compute_video_address(int col, int row) +{ + /* special Apple II addressing - gotta love it */ + return (((row & 0x07) << 7) | ((row & 0x18) * 5 + col)); +} + + + +/*------------------------------------------------- + adjust_begin_and_end_row - processes the cliprect +-------------------------------------------------*/ + +void apple2_state::adjust_begin_and_end_row(const rectangle &cliprect, int *beginrow, int *endrow) +{ + /* assumptions of the code */ + assert((*beginrow % 8) == 0); + assert((*endrow % 8) == 7); + + *beginrow = MAX(*beginrow, cliprect.min_y - (cliprect.min_y % 8)); + *endrow = MIN(*endrow, cliprect.max_y - (cliprect.max_y % 8) + 7); + + /* sanity check again */ + assert((*beginrow % 8) == 0); + assert((*endrow % 8) == 7); +} + + + +/*************************************************************************** + TEXT +***************************************************************************/ + +/*------------------------------------------------- + apple2_plot_text_character - plots a single + textual character +-------------------------------------------------*/ + +inline void apple2_state::apple2_plot_text_character(bitmap_ind16 &bitmap, int xpos, int ypos, int xscale, UINT32 code, + const UINT8 *textgfx_data, UINT32 textgfx_datalen, UINT32 my_a2) +{ + int x, y, i; + int fg = m_fgcolor; + int bg = m_bgcolor; + const UINT8 *chardata; + UINT16 color; + + if (m_sysconfig != NULL) + { + switch (m_sysconfig->read() & 0x03) + { + case 0: + break; // leave alone + + case 1: + if ((m_machinetype == APPLE_II) || (m_machinetype == LABA2P) || (m_machinetype == SPACE84)) + { + bg = WHITE; + } + else + { + fg = WHITE; + } + break; + + case 2: + if ((m_machinetype == APPLE_II) || (m_machinetype == LABA2P) || (m_machinetype == SPACE84)) + { + bg = GREEN; + } + else + { + fg = GREEN; + } + break; + + case 3: + if ((m_machinetype == APPLE_II) || (m_machinetype == LABA2P) || (m_machinetype == SPACE84)) + { + bg = ORANGE; + } + else + { + fg = ORANGE; + } + break; + } + } + + + if (my_a2 & VAR_ALTCHARSET) + { + /* we're using an alternate charset */ + code |= m_alt_charset_value; + } + else if (m_flash && (code >= 0x40) && (code <= 0x7f)) + { + /* we're flashing; swap */ + i = fg; + fg = bg; + bg = i; + } + + /* look up the character data */ + chardata = &textgfx_data[(code * 8) % textgfx_datalen]; + + /* and finally, plot the character itself */ + if ((m_machinetype == SPACE84) || (m_machinetype == LABA2P)) + { + for (y = 0; y < 8; y++) + { + for (x = 0; x < 7; x++) + { + color = (chardata[y] & (1 << (6-x))) ? bg : fg; + + for (i = 0; i < xscale; i++) + { + bitmap.pix16(ypos + y, xpos + (x * xscale) + i) = color; + } + } + } + } + else + { + for (y = 0; y < 8; y++) + { + for (x = 0; x < 7; x++) + { + color = (chardata[y] & (1 << x)) ? bg : fg; + + for (i = 0; i < xscale; i++) + { + bitmap.pix16(ypos + y, xpos + (x * xscale) + i) = color; + } + } + } + } +} + + + +/*------------------------------------------------- + apple2_text_draw - renders text (either 40 + column or 80 column) +-------------------------------------------------*/ + +void apple2_state::apple2_text_draw(bitmap_ind16 &bitmap, const rectangle &cliprect, int page, int beginrow, int endrow) +{ + int row, col; + UINT32 start_address = (page ? 0x0800 : 0x0400); + UINT32 address; + UINT32 my_a2 = effective_a2(); + + /* perform adjustments */ + adjust_begin_and_end_row(cliprect, &beginrow, &endrow); + + for (row = beginrow; row <= endrow; row += 8) + { + for (col = 0; col < 40; col++) + { + /* calculate adderss */ + address = start_address + compute_video_address(col, row / 8); + + if (my_a2 & VAR_80COL) + { + apple2_plot_text_character(bitmap, col * 14 + 0, row, 1, m_a2_videoaux[address], + m_textgfx_data, m_textgfx_datalen, my_a2); + apple2_plot_text_character(bitmap, col * 14 + 7, row, 1, m_a2_videoram[address], + m_textgfx_data, m_textgfx_datalen, my_a2); + } + else + { + apple2_plot_text_character(bitmap, col * 14, row, 2, m_a2_videoram[address], + m_textgfx_data, m_textgfx_datalen, my_a2); + } + } + } +} + + +/*------------------------------------------------- + apple2_lores_draw - renders lo-res text +-------------------------------------------------*/ + +void apple2_state::apple2_lores_draw(bitmap_ind16 &bitmap, const rectangle &cliprect, int page, int beginrow, int endrow) +{ + int row, col, y, x; + UINT8 code; + UINT32 start_address = (page ? 0x0800 : 0x0400); + UINT32 address; + + /* perform adjustments */ + adjust_begin_and_end_row(cliprect, &beginrow, &endrow); + + for (row = beginrow; row <= endrow; row += 8) + { + for (col = 0; col < 40; col++) + { + /* calculate adderss */ + address = start_address + compute_video_address(col, row / 8); + + /* perform the lookup */ + code = m_a2_videoram[address]; + + /* and now draw */ + for (y = 0; y < 4; y++) + { + for (x = 0; x < 14; x++) + bitmap.pix16(row + y, col * 14 + x) = (code >> 0) & 0x0F; + } + for (y = 4; y < 8; y++) + { + for (x = 0; x < 14; x++) + bitmap.pix16(row + y, col * 14 + x) = (code >> 4) & 0x0F; + } + } + } +} + + +/*************************************************************************** + HIGH RESOLUTION GRAPHICS +***************************************************************************/ + +void apple2_state::apple2_hires_draw(bitmap_ind16 &bitmap, const rectangle &cliprect, int page, int beginrow, int endrow) +{ + const UINT8 *vram, *vaux; + int row, col, b; + int offset; + int columns; + UINT8 vram_row[82]; + UINT16 v; + UINT16 *p; + UINT32 w; + UINT16 *artifact_map_ptr; + int mon_type = 0; + + if (m_sysconfig != NULL) + { + mon_type = m_sysconfig->read() & 0x03; + } + + /* sanity checks */ + if (beginrow < cliprect.min_y) + beginrow = cliprect.min_y; + if (endrow > cliprect.max_y) + endrow = cliprect.max_y; + if (endrow < beginrow) + return; + + if (m_machinetype == TK2000) + { + vram = m_a2_videoram + (page ? 0xa000 : 0x2000); + vaux = m_a2_videoaux + (page ? 0xa000 : 0x2000); + } + else + { + vram = m_a2_videoram + (page ? 0x4000 : 0x2000); + vaux = m_a2_videoaux + (page ? 0x4000 : 0x2000); + } + columns = ((effective_a2() & (VAR_DHIRES|VAR_80COL)) == (VAR_DHIRES|VAR_80COL)) ? 80 : 40; + + vram_row[0] = 0; + vram_row[columns + 1] = 0; + + for (row = beginrow; row <= endrow; row++) + { + for (col = 0; col < 40; col++) + { + offset = compute_video_address(col, row / 8) | ((row & 7) << 10); + + switch(columns) + { + case 40: + vram_row[1+col] = vram[offset]; + break; + + case 80: + vram_row[1+(col*2)+0] = vaux[offset]; + vram_row[1+(col*2)+1] = vram[offset]; + break; + + default: + fatalerror("Invalid column count\n"); + } + } + + p = &bitmap.pix16(row); + + for (col = 0; col < columns; col++) + { + w = (((UINT32) vram_row[col+0] & 0x7f) << 0) + | (((UINT32) vram_row[col+1] & 0x7f) << 7) + | (((UINT32) vram_row[col+2] & 0x7f) << 14); + + switch(columns) + { + case 40: + switch (mon_type) + { + case 0: + artifact_map_ptr = &m_hires_artifact_map[((vram_row[col+1] & 0x80) >> 7) * 16]; + for (b = 0; b < 7; b++) + { + v = artifact_map_ptr[((w >> (b + 7-1)) & 0x07) | (((b ^ col) & 0x01) << 3)]; + *(p++) = v; + *(p++) = v; + } + break; + + case 1: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? WHITE : BLACK; + *(p++) = v ? WHITE : BLACK; + } + break; + + case 2: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? GREEN : BLACK; + *(p++) = v ? GREEN : BLACK; + } + break; + + case 3: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? ORANGE : BLACK; + *(p++) = v ? ORANGE : BLACK; + } + break; + } + break; + + case 80: + if (m_monochrome_dhr) + { + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? WHITE : BLACK; + } + } + else + { + switch (mon_type) + { + case 0: + for (b = 0; b < 7; b++) + { + v = m_dhires_artifact_map[((((w >> (b + 7-1)) & 0x0F) * 0x11) >> (((2-(col*7+b))) & 0x03)) & 0x0F]; + *(p++) = v; + } + break; + + case 1: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? WHITE : BLACK; + } + break; + + case 2: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? GREEN : BLACK; + } + break; + + case 3: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? ORANGE : BLACK; + } + break; + } + } + break; + + default: + fatalerror("Invalid column count\n"); + } + } + } +} + + + +/*************************************************************************** + VIDEO CORE +***************************************************************************/ + +void apple2_state::apple2_video_start(const UINT8 *vram, const UINT8 *aux_vram, UINT32 ignored_softswitches, int hires_modulo) +{ + int i, j; + UINT16 c; + UINT8 *apple2_font; + + static const UINT8 hires_artifact_color_table[] = + { + BLACK, PURPLE, GREEN, WHITE, + BLACK, BLUE, ORANGE, WHITE + }; + + static const UINT8 dhires_artifact_color_table[] = + { + BLACK, DKGREEN, BROWN, GREEN, + DKRED, DKGRAY, ORANGE, YELLOW, + DKBLUE, BLUE, GRAY, AQUA, + PURPLE, LTBLUE, PINK, WHITE + }; + + m_fgcolor = 15; + m_bgcolor = 0; + m_flash = 0; + apple2_font = memregion("gfx1")->base(); + m_alt_charset_value = memregion("gfx1")->bytes() / 16; + m_a2_videoram = vram; + m_a2_videoaux = aux_vram; + + m_textgfx_data = memregion("gfx1")->base(); + m_textgfx_datalen = memregion("gfx1")->bytes(); + + /* 2^3 dependent pixels * 2 color sets * 2 offsets */ + m_hires_artifact_map = auto_alloc_array(machine(), UINT16, 8 * 2 * 2); + + /* 2^4 dependent pixels */ + m_dhires_artifact_map = auto_alloc_array(machine(), UINT16, 16); + + /* build hires artifact map */ + for (i = 0; i < 8; i++) + { + for (j = 0; j < 2; j++) + { + if (i & 0x02) + { + if ((i & 0x05) != 0) + c = 3; + else + c = j ? 2 : 1; + } + else + { + if ((i & 0x05) == 0x05) + c = j ? 1 : 2; + else + c = 0; + } + m_hires_artifact_map[ 0 + j*8 + i] = hires_artifact_color_table[(c + 0) % hires_modulo]; + m_hires_artifact_map[16 + j*8 + i] = hires_artifact_color_table[(c + 4) % hires_modulo]; + } + } + + /* Fix for Ivel Ultra */ + if (!strcmp(machine().system().name, "ivelultr")) { + int len = memregion("gfx1")->bytes(); + for (i = 0; i < len; i++) + { + apple2_font[i] = BITSWAP8(apple2_font[i], 7, 7, 6, 5, 4, 3, 2, 1); + } + } + + /* do we need to flip the gfx? */ + if (!strcmp(machine().system().name, "apple2") + || !strcmp(machine().system().name, "apple2p") + || !strcmp(machine().system().name, "prav82") + || !strcmp(machine().system().name, "prav8m") + || !strcmp(machine().system().name, "ivelultr") + || !strcmp(machine().system().name, "apple2jp")) + { + int len = memregion("gfx1")->bytes(); + for (i = 0; i < len; i++) + { + apple2_font[i] = BITSWAP8(apple2_font[i], 7, 0, 1, 2, 3, 4, 5, 6); + } + } + + + /* build double hires artifact map */ + for (i = 0; i < 16; i++) + { + m_dhires_artifact_map[i] = dhires_artifact_color_table[i]; + } + + memset(&m_old_a2, 0, sizeof(m_old_a2)); + m_a2_videomask = ~ignored_softswitches; +} + + + +VIDEO_START_MEMBER(apple2_state,apple2) +{ + apple2_video_start(m_ram->pointer(), m_ram->pointer()+0x10000, VAR_80COL | VAR_ALTCHARSET | VAR_DHIRES, 4); + + /* hack to fix the colors on apple2/apple2p */ + m_fgcolor = 0; + m_bgcolor = 15; + + m_monochrome_dhr = false; +} + + +VIDEO_START_MEMBER(apple2_state,apple2p) +{ + apple2_video_start(m_ram->pointer(), m_ram->pointer(), VAR_80COL | VAR_ALTCHARSET | VAR_DHIRES, 8); + + /* hack to fix the colors on apple2/apple2p */ + m_fgcolor = 0; + m_bgcolor = 15; + + m_monochrome_dhr = false; +} + + +VIDEO_START_MEMBER(apple2_state,apple2e) +{ + device_a2eauxslot_card_interface *auxslotdevice = m_a2eauxslot->get_a2eauxslot_card(); + if (auxslotdevice) + { + apple2_video_start(m_ram->pointer(), auxslotdevice->get_vram_ptr(), auxslotdevice->allow_dhr() ? 0 : VAR_DHIRES, 8); + } + else + { + apple2_video_start(m_ram->pointer(), m_ram->pointer(), VAR_80COL | VAR_DHIRES, 8); + } +} + + +VIDEO_START_MEMBER(apple2_state,apple2c) +{ + apple2_video_start(m_ram->pointer(), m_ram->pointer()+0x10000, 0, 8); +} + +UINT32 apple2_state::screen_update_apple2(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) +{ + int page; + UINT32 new_a2; + + /* calculate the m_flash value */ + m_flash = ((machine().time() * 4).seconds() & 1) ? 1 : 0; + + /* read out relevant softswitch variables; to see what has changed */ + new_a2 = effective_a2(); + if (new_a2 & VAR_80STORE) + new_a2 &= ~VAR_PAGE2; + new_a2 &= VAR_TEXT | VAR_MIXED | VAR_HIRES | VAR_DHIRES | VAR_80COL | VAR_PAGE2 | VAR_ALTCHARSET; + + if (ALWAYS_REFRESH || (new_a2 != m_old_a2)) + { + m_old_a2 = new_a2; + } + + /* choose which page to use */ + page = (new_a2 & VAR_PAGE2) ? 1 : 0; + + /* choose the video mode to draw */ + if (effective_a2() & VAR_TEXT) + { + /* text screen - TK2000 uses HGR for text */ + if (m_machinetype == TK2000) + { + apple2_hires_draw(bitmap, cliprect, page, 0, 191); + } + else + { + apple2_text_draw(bitmap, cliprect, page, 0, 191); + } + } + else if ((effective_a2() & VAR_HIRES) && (effective_a2() & VAR_MIXED)) + { + /* hi-res on top; text at bottom */ + apple2_hires_draw(bitmap, cliprect, page, 0, 159); + apple2_text_draw(bitmap, cliprect, page, 160, 191); + } + else if (effective_a2() & VAR_HIRES) + { + /* hi-res screen */ + apple2_hires_draw(bitmap, cliprect, page, 0, 191); + } + else if (effective_a2() & VAR_MIXED) + { + /* lo-res on top; text at bottom */ + apple2_lores_draw(bitmap, cliprect, page, 0, 159); + apple2_text_draw(bitmap, cliprect, page, 160, 191); + } + else + { + /* lo-res screen */ + apple2_lores_draw(bitmap, cliprect, page, 0, 191); + } + return 0; +} + +/* + New implementation +*/ + +const device_type APPLE2_VIDEO = &device_creator<a2_video_device>; + +//------------------------------------------------- +// a2_video_device - constructor +//------------------------------------------------- + +a2_video_device::a2_video_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, APPLE2_VIDEO, "Apple II video", tag, owner, clock, "a2video", __FILE__) +{ +} + +void a2_video_device::device_start() +{ + static const UINT8 hires_artifact_color_table[] = + { + BLACK, PURPLE, GREEN, WHITE, + BLACK, BLUE, ORANGE, WHITE + }; + static const UINT8 dhires_artifact_color_table[] = + { + BLACK, DKGREEN, BROWN, GREEN, + DKRED, DKGRAY, ORANGE, YELLOW, + DKBLUE, BLUE, GRAY, AQUA, + PURPLE, LTBLUE, PINK, WHITE + }; + + // generate hi-res artifact data + int i, j; + UINT16 c; + + /* 2^3 dependent pixels * 2 color sets * 2 offsets */ + m_hires_artifact_map = auto_alloc_array(machine(), UINT16, 8 * 2 * 2); + + /* build hires artifact map */ + for (i = 0; i < 8; i++) + { + for (j = 0; j < 2; j++) + { + if (i & 0x02) + { + if ((i & 0x05) != 0) + c = 3; + else + c = j ? 2 : 1; + } + else + { + if ((i & 0x05) == 0x05) + c = j ? 1 : 2; + else + c = 0; + } + m_hires_artifact_map[ 0 + j*8 + i] = hires_artifact_color_table[(c + 0) % 8]; + m_hires_artifact_map[16 + j*8 + i] = hires_artifact_color_table[(c + 4) % 8]; + } + } + + /* 2^4 dependent pixels */ + m_dhires_artifact_map = auto_alloc_array(machine(), UINT16, 16); + + /* build double hires artifact map */ + for (i = 0; i < 16; i++) + { + m_dhires_artifact_map[i] = dhires_artifact_color_table[i]; + } + + save_item(NAME(m_page2)); + save_item(NAME(m_flash)); + save_item(NAME(m_mix)); + save_item(NAME(m_graphics)); + save_item(NAME(m_hires)); + save_item(NAME(m_dhires)); + save_item(NAME(m_80col)); + save_item(NAME(m_altcharset)); +} + +void a2_video_device::device_reset() +{ + m_page2 = false; + m_graphics = false; + m_hires = false; + m_80col = false; + m_altcharset = false; + m_dhires = false; + m_flash = false; + m_mix = false; + m_sysconfig = 0; +} + +void a2_video_device::plot_text_character(bitmap_ind16 &bitmap, int xpos, int ypos, int xscale, UINT32 code, + const UINT8 *textgfx_data, UINT32 textgfx_datalen, int fg, int bg) +{ + int x, y, i; + const UINT8 *chardata; + UINT16 color; + + if (!m_altcharset) + { + if ((code >= 0x40) && (code <= 0x7f)) + { + code &= 0x3f; + + if (m_flash) + { + i = fg; + fg = bg; + bg = i; + } + } + } + else + { + if ((code >= 0x60) && (code <= 0x7f)) + { + code |= 0x80; // map to lowercase normal + i = fg; // and flip the color + fg = bg; + bg = i; + } + } + + /* look up the character data */ + chardata = &textgfx_data[(code * 8)]; + + for (y = 0; y < 8; y++) + { + for (x = 0; x < 7; x++) + { + color = (chardata[y] & (1 << x)) ? bg : fg; + + for (i = 0; i < xscale; i++) + { + bitmap.pix16(ypos + y, xpos + (x * xscale) + i) = color; + } + } + } +} + +void a2_video_device::plot_text_character_orig(bitmap_ind16 &bitmap, int xpos, int ypos, int xscale, UINT32 code, + const UINT8 *textgfx_data, UINT32 textgfx_datalen, int fg, int bg) +{ + int x, y, i; + const UINT8 *chardata; + UINT16 color; + + if ((code >= 0x40) && (code <= 0x7f)) + { + if (m_flash) + { + i = fg; + fg = bg; + bg = i; + } + } + + /* look up the character data */ + chardata = &textgfx_data[(code * 8)]; + + for (y = 0; y < 8; y++) + { + for (x = 0; x < 7; x++) + { + color = (chardata[y] & (1 << (6-x))) ? fg : bg; + + for (i = 0; i < xscale; i++) + { + bitmap.pix16(ypos + y, xpos + (x * xscale) + i) = color; + } + } + } +} + +void a2_video_device::plot_text_character_ultr(bitmap_ind16 &bitmap, int xpos, int ypos, int xscale, UINT32 code, + const UINT8 *textgfx_data, UINT32 textgfx_datalen, int fg, int bg) +{ + int x, y, i; + const UINT8 *chardata; + UINT16 color; + + if ((code >= 0x40) && (code <= 0x7f)) + { + if (m_flash) + { + i = fg; + fg = bg; + bg = i; + } + } + + /* look up the character data */ + chardata = &textgfx_data[(code * 8)]; + + for (y = 0; y < 8; y++) + { + for (x = 1; x < 8; x++) + { + color = (chardata[y] & (1 << x)) ? fg : bg; + + for (i = 0; i < xscale; i++) + { + bitmap.pix16(ypos + y, xpos + ((x-1) * xscale) + i) = color; + } + } + } +} + +void a2_video_device::lores_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow) +{ + int row, col, y, x; + UINT8 code; + UINT32 start_address = m_page2 ? 0x0800 : 0x0400; + UINT32 address; + int fg = 0; + + switch (m_sysconfig & 0x03) + { + case 0: fg = WHITE; break; + case 1: fg = WHITE; break; + case 2: fg = GREEN; break; + case 3: fg = ORANGE; break; + } + + /* perform adjustments */ + beginrow = MAX(beginrow, cliprect.min_y - (cliprect.min_y % 8)); + endrow = MIN(endrow, cliprect.max_y - (cliprect.max_y % 8) + 7); + + if (!(m_sysconfig & 0x03)) + { + for (row = beginrow; row <= endrow; row += 8) + { + for (col = 0; col < 40; col++) + { + /* calculate adderss */ + address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)); + + /* perform the lookup */ + code = m_ram_ptr[address]; + + /* and now draw */ + for (y = 0; y < 4; y++) + { + for (x = 0; x < 14; x++) + bitmap.pix16(row + y, col * 14 + x) = (code >> 0) & 0x0F; + } + for (y = 4; y < 8; y++) + { + for (x = 0; x < 14; x++) + bitmap.pix16(row + y, col * 14 + x) = (code >> 4) & 0x0F; + } + } + } + } + else + { + for (row = beginrow; row <= endrow; row += 8) + { + for (col = 0; col < 40; col++) + { + UINT8 bits; + + /* calculate adderss */ + address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)); + + /* perform the lookup */ + code = m_ram_ptr[address]; + + bits = (code >> 0) & 0x0F; + /* and now draw */ + for (y = 0; y < 4; y++) + { + for (x = 0; x < 14; x++) + { + bitmap.pix16(row + y, col * 14 + x) = bits & (1 << (x % 4)) ? fg : 0; + } + } + + bits = (code >> 4) & 0x0F; + for (y = 4; y < 8; y++) + { + for (x = 0; x < 14; x++) + bitmap.pix16(row + y, col * 14 + x) = bits & (1 << (x % 4)) ? fg : 0; + } + } + } + } +} + +void a2_video_device::dlores_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow) +{ + int row, col, y; + UINT8 code, auxcode; + UINT32 start_address = m_page2 ? 0x0800 : 0x0400; + UINT32 address; + static const int aux_colors[16] = { 0, 2, 4, 6, 8, 0xa, 0xc, 0xe, 1, 3, 5, 7, 9, 0xb, 0xd, 0xf }; + int fg = 0; + + switch (m_sysconfig & 0x03) + { + case 0: fg = WHITE; break; + case 1: fg = WHITE; break; + case 2: fg = GREEN; break; + case 3: fg = ORANGE; break; + } + + /* perform adjustments */ + beginrow = MAX(beginrow, cliprect.min_y - (cliprect.min_y % 8)); + endrow = MIN(endrow, cliprect.max_y - (cliprect.max_y % 8) + 7); + + if (!(m_sysconfig & 0x03)) + { + for (row = beginrow; row <= endrow; row += 8) + { + for (col = 0; col < 40; col++) + { + /* calculate adderss */ + address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)); + + /* perform the lookup */ + code = m_ram_ptr[address]; + auxcode = m_aux_ptr[address]; + + /* and now draw */ + for (y = 0; y < 4; y++) + { + UINT16 *vram = &bitmap.pix16(row + y, (col * 14)); + + *vram++ = aux_colors[(auxcode >> 0) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 0) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 0) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 0) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 0) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 0) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 0) & 0x0F]; + *vram++ = (code >> 0) & 0x0F; + *vram++ = (code >> 0) & 0x0F; + *vram++ = (code >> 0) & 0x0F; + *vram++ = (code >> 0) & 0x0F; + *vram++ = (code >> 0) & 0x0F; + *vram++ = (code >> 0) & 0x0F; + *vram++ = (code >> 0) & 0x0F; + } + for (y = 4; y < 8; y++) + { + UINT16 *vram = &bitmap.pix16(row + y, (col * 14)); + + *vram++ = aux_colors[(auxcode >> 4) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 4) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 4) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 4) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 4) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 4) & 0x0F]; + *vram++ = aux_colors[(auxcode >> 4) & 0x0F]; + *vram++ = (code >> 4) & 0x0F; + *vram++ = (code >> 4) & 0x0F; + *vram++ = (code >> 4) & 0x0F; + *vram++ = (code >> 4) & 0x0F; + *vram++ = (code >> 4) & 0x0F; + *vram++ = (code >> 4) & 0x0F; + *vram++ = (code >> 4) & 0x0F; + } + } + } + } + else + { + for (row = beginrow; row <= endrow; row += 8) + { + for (col = 0; col < 40; col++) + { + UINT8 bits, abits; + + /* calculate adderss */ + address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)); + + /* perform the lookup */ + code = m_ram_ptr[address]; + auxcode = m_aux_ptr[address]; + + bits = (code >> 0) & 0x0F; + abits = (auxcode >> 0) & 0x0F; + + /* and now draw */ + for (y = 0; y < 4; y++) + { + UINT16 *vram = &bitmap.pix16(row + y, (col * 14)); + + *vram++ = abits & (1 << 0) ? fg : 0; + *vram++ = abits & (1 << 1) ? fg : 0; + *vram++ = abits & (1 << 2) ? fg : 0; + *vram++ = abits & (1 << 3) ? fg : 0; + *vram++ = abits & (1 << 0) ? fg : 0; + *vram++ = abits & (1 << 1) ? fg : 0; + *vram++ = abits & (1 << 2) ? fg : 0; + *vram++ = bits & (1 << 0) ? fg : 0; + *vram++ = bits & (1 << 1) ? fg : 0; + *vram++ = bits & (1 << 2) ? fg : 0; + *vram++ = bits & (1 << 3) ? fg : 0; + *vram++ = bits & (1 << 0) ? fg : 0; + *vram++ = bits & (1 << 1) ? fg : 0; + *vram++ = bits & (1 << 2) ? fg : 0; + } + + bits = (code >> 4) & 0x0F; + abits = (auxcode >> 4) & 0x0F; + + for (y = 4; y < 8; y++) + { + UINT16 *vram = &bitmap.pix16(row + y, (col * 14)); + + *vram++ = abits & (1 << 0) ? fg : 0; + *vram++ = abits & (1 << 1) ? fg : 0; + *vram++ = abits & (1 << 2) ? fg : 0; + *vram++ = abits & (1 << 3) ? fg : 0; + *vram++ = abits & (1 << 0) ? fg : 0; + *vram++ = abits & (1 << 1) ? fg : 0; + *vram++ = abits & (1 << 2) ? fg : 0; + *vram++ = bits & (1 << 0) ? fg : 0; + *vram++ = bits & (1 << 1) ? fg : 0; + *vram++ = bits & (1 << 2) ? fg : 0; + *vram++ = bits & (1 << 3) ? fg : 0; + *vram++ = bits & (1 << 0) ? fg : 0; + *vram++ = bits & (1 << 1) ? fg : 0; + *vram++ = bits & (1 << 2) ? fg : 0; + } + } + } + } +} + +void a2_video_device::text_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow) +{ + int row, col; + UINT32 start_address; + UINT32 address; + UINT8 *aux_page = m_ram_ptr; + int fg = 0; + int bg = 0; + + if (m_80col) + { + start_address = 0x400; + if (m_aux_ptr) + { + aux_page = m_aux_ptr; + } + } + else + { + start_address = m_page2 ? 0x800 : 0x400; + } + + beginrow = MAX(beginrow, cliprect.min_y - (cliprect.min_y % 8)); + endrow = MIN(endrow, cliprect.max_y - (cliprect.max_y % 8) + 7); + + switch (m_sysconfig & 0x03) + { + case 0: fg = WHITE; break; + case 1: fg = WHITE; break; + case 2: fg = GREEN; break; + case 3: fg = ORANGE; break; + } + + for (row = beginrow; row <= endrow; row += 8) + { + if (m_80col) + { + for (col = 0; col < 40; col++) + { + /* calculate address */ + address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)); + + plot_text_character(bitmap, col * 14, row, 1, aux_page[address], + m_char_ptr, m_char_size, fg, bg); + plot_text_character(bitmap, col * 14 + 7, row, 1, m_ram_ptr[address], + m_char_ptr, m_char_size, fg, bg); + } + } + else + { + for (col = 0; col < 40; col++) + { + /* calculate address */ + address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)); + plot_text_character(bitmap, col * 14, row, 2, m_ram_ptr[address], + m_char_ptr, m_char_size, fg, bg); + } + } + } +} + +void a2_video_device::text_update_orig(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow) +{ + int row, col; + UINT32 start_address = m_page2 ? 0x800 : 0x400; + UINT32 address; + int fg = 0; + int bg = 0; + + beginrow = MAX(beginrow, cliprect.min_y - (cliprect.min_y % 8)); + endrow = MIN(endrow, cliprect.max_y - (cliprect.max_y % 8) + 7); + + switch (m_sysconfig & 0x03) + { + case 0: fg = WHITE; break; + case 1: fg = WHITE; break; + case 2: fg = GREEN; break; + case 3: fg = ORANGE; break; + } + + for (row = beginrow; row <= endrow; row += 8) + { + for (col = 0; col < 40; col++) + { + /* calculate address */ + address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)); + plot_text_character_orig(bitmap, col * 14, row, 2, m_ram_ptr[address], + m_char_ptr, m_char_size, fg, bg); + } + } +} + +void a2_video_device::text_update_ultr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow) +{ + int row, col; + UINT32 start_address = m_page2 ? 0x800 : 0x400; + UINT32 address; + int fg = 0; + int bg = 0; + + beginrow = MAX(beginrow, cliprect.min_y - (cliprect.min_y % 8)); + endrow = MIN(endrow, cliprect.max_y - (cliprect.max_y % 8) + 7); + + switch (m_sysconfig & 0x03) + { + case 0: fg = WHITE; break; + case 1: fg = WHITE; break; + case 2: fg = GREEN; break; + case 3: fg = ORANGE; break; + } + + for (row = beginrow; row <= endrow; row += 8) + { + for (col = 0; col < 40; col++) + { + /* calculate address */ + address = start_address + ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)); + plot_text_character_ultr(bitmap, col * 14, row, 2, m_ram_ptr[address], + m_char_ptr, m_char_size, fg, bg); + } + } +} + +void a2_video_device::hgr_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow) +{ + const UINT8 *vram; + int row, col, b; + int offset; + UINT8 vram_row[42]; + UINT16 v; + UINT16 *p; + UINT32 w; + UINT16 *artifact_map_ptr; + int mon_type = m_sysconfig & 0x03; + + /* sanity checks */ + if (beginrow < cliprect.min_y) + beginrow = cliprect.min_y; + if (endrow > cliprect.max_y) + endrow = cliprect.max_y; + if (endrow < beginrow) + return; + + vram = &m_ram_ptr[(m_page2 ? 0x4000 : 0x2000)]; + + vram_row[0] = 0; + vram_row[41] = 0; + + for (row = beginrow; row <= endrow; row++) + { + for (col = 0; col < 40; col++) + { + offset = ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)) | ((row & 7) << 10); + vram_row[1+col] = vram[offset]; + } + + p = &bitmap.pix16(row); + + for (col = 0; col < 40; col++) + { + w = (((UINT32) vram_row[col+0] & 0x7f) << 0) + | (((UINT32) vram_row[col+1] & 0x7f) << 7) + | (((UINT32) vram_row[col+2] & 0x7f) << 14); + + switch (mon_type) + { + case 0: + // verified on h/w: setting dhires w/o 80col emulates a rev. 0 Apple ][ with no orange/blue + if (m_dhires) + { + artifact_map_ptr = m_hires_artifact_map; + } + else + { + artifact_map_ptr = &m_hires_artifact_map[((vram_row[col + 1] & 0x80) >> 7) * 16]; + } + for (b = 0; b < 7; b++) + { + v = artifact_map_ptr[((w >> (b + 7-1)) & 0x07) | (((b ^ col) & 0x01) << 3)]; + *(p++) = v; + *(p++) = v; + } + break; + + case 1: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? WHITE : BLACK; + *(p++) = v ? WHITE : BLACK; + } + break; + + case 2: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? GREEN : BLACK; + *(p++) = v ? GREEN : BLACK; + } + break; + + case 3: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? ORANGE : BLACK; + *(p++) = v ? ORANGE : BLACK; + } + break; + } + } + } +} + +// similar to regular A2 except page 2 is at $A000 +void a2_video_device::hgr_update_tk2000(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow) +{ + const UINT8 *vram; + int row, col, b; + int offset; + UINT8 vram_row[42]; + UINT16 v; + UINT16 *p; + UINT32 w; + UINT16 *artifact_map_ptr; + int mon_type = m_sysconfig & 0x03; + + /* sanity checks */ + if (beginrow < cliprect.min_y) + beginrow = cliprect.min_y; + if (endrow > cliprect.max_y) + endrow = cliprect.max_y; + if (endrow < beginrow) + return; + + vram = &m_ram_ptr[(m_page2 ? 0xa000 : 0x2000)]; + + vram_row[0] = 0; + vram_row[41] = 0; + + for (row = beginrow; row <= endrow; row++) + { + for (col = 0; col < 40; col++) + { + offset = ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)) | ((row & 7) << 10); + vram_row[1+col] = vram[offset]; + } + + p = &bitmap.pix16(row); + + for (col = 0; col < 40; col++) + { + w = (((UINT32) vram_row[col+0] & 0x7f) << 0) + | (((UINT32) vram_row[col+1] & 0x7f) << 7) + | (((UINT32) vram_row[col+2] & 0x7f) << 14); + + switch (mon_type) + { + case 0: + artifact_map_ptr = &m_hires_artifact_map[((vram_row[col+1] & 0x80) >> 7) * 16]; + for (b = 0; b < 7; b++) + { + v = artifact_map_ptr[((w >> (b + 7-1)) & 0x07) | (((b ^ col) & 0x01) << 3)]; + *(p++) = v; + *(p++) = v; + } + break; + + case 1: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? WHITE : BLACK; + *(p++) = v ? WHITE : BLACK; + } + break; + + case 2: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? GREEN : BLACK; + *(p++) = v ? GREEN : BLACK; + } + break; + + case 3: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? ORANGE : BLACK; + *(p++) = v ? ORANGE : BLACK; + } + break; + } + } + } +} + +void a2_video_device::dhgr_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow) +{ + const UINT8 *vram, *vaux; + int row, col, b; + int offset; + UINT8 vram_row[82]; + UINT16 v; + UINT16 *p; + UINT32 w; + int page = m_page2 ? 0x4000 : 0x2000; + int mon_type = m_sysconfig & 0x03; + + /* sanity checks */ + if (beginrow < cliprect.min_y) + beginrow = cliprect.min_y; + if (endrow > cliprect.max_y) + endrow = cliprect.max_y; + if (endrow < beginrow) + return; + + vram = &m_ram_ptr[page]; + if (m_aux_ptr) + { + vaux = m_aux_ptr; + } + else + { + vaux = vram; + } + vaux += page; + + vram_row[0] = 0; + vram_row[81] = 0; + + for (row = beginrow; row <= endrow; row++) + { + for (col = 0; col < 40; col++) + { + offset = ((((row/8) & 0x07) << 7) | (((row/8) & 0x18) * 5 + col)) | ((row & 7) << 10); + vram_row[1+(col*2)+0] = vaux[offset]; + vram_row[1+(col*2)+1] = vram[offset]; + } + + p = &bitmap.pix16(row); + + for (col = 0; col < 80; col++) + { + w = (((UINT32) vram_row[col+0] & 0x7f) << 0) + | (((UINT32) vram_row[col+1] & 0x7f) << 7) + | (((UINT32) vram_row[col+2] & 0x7f) << 14); + + switch (mon_type) + { + case 0: + for (b = 0; b < 7; b++) + { + v = m_dhires_artifact_map[((((w >> (b + 7-1)) & 0x0F) * 0x11) >> (((2-(col*7+b))) & 0x03)) & 0x0F]; + *(p++) = v; + } + break; + + case 1: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? WHITE : BLACK; + } + break; + + case 2: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? GREEN : BLACK; + } + break; + + case 3: + w >>= 7; + for (b = 0; b < 7; b++) + { + v = (w & 1); + w >>= 1; + *(p++) = v ? ORANGE : BLACK; + } + break; + } + } + } +} + +/* according to Steve Nickolas (author of Dapple), our original palette would + * have been more appropriate for an Apple IIgs. So we've substituted in the + * Robert Munafo palette instead, which is more accurate on 8-bit Apples + */ +static const rgb_t apple2_palette[] = +{ + rgb_t::black, + rgb_t(0xE3, 0x1E, 0x60), /* Dark Red */ + rgb_t(0x60, 0x4E, 0xBD), /* Dark Blue */ + rgb_t(0xFF, 0x44, 0xFD), /* Purple */ + rgb_t(0x00, 0xA3, 0x60), /* Dark Green */ + rgb_t(0x9C, 0x9C, 0x9C), /* Dark Gray */ + rgb_t(0x14, 0xCF, 0xFD), /* Medium Blue */ + rgb_t(0xD0, 0xC3, 0xFF), /* Light Blue */ + rgb_t(0x60, 0x72, 0x03), /* Brown */ + rgb_t(0xFF, 0x6A, 0x3C), /* Orange */ + rgb_t(0x9C, 0x9C, 0x9C), /* Light Grey */ + rgb_t(0xFF, 0xA0, 0xD0), /* Pink */ + rgb_t(0x14, 0xF5, 0x3C), /* Light Green */ + rgb_t(0xD0, 0xDD, 0x8D), /* Yellow */ + rgb_t(0x72, 0xFF, 0xD0), /* Aquamarine */ + rgb_t(0xFF, 0xFF, 0xFF) /* White */ +}; + +/* Initialize the palette */ +PALETTE_INIT_MEMBER(a2_video_device, apple2) +{ + palette.set_pen_colors(0, apple2_palette, ARRAY_LENGTH(apple2_palette)); +} |