// 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, "ace100")
|| !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::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::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));
}