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apple2: fix Ivel Ultra's unique text drawing (MT#5814) [R. Belmont]

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This commit is contained in:
arbee 2015-08-22 18:21:25 -04:00
parent 18863bae38
commit b1ce31faeb
3 changed files with 92 additions and 4 deletions
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27
src/mess/drivers/apple2.c
View File

@ -377,7 +377,14 @@ UINT32 napple2_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap,
if (m_video->m_mix)
{
m_video->hgr_update(screen, bitmap, cliprect, 0, 159);
m_video->text_update_orig(screen, bitmap, cliprect, 160, 191);
if (!strcmp(machine().system().name, "ivelultr"))
{
m_video->text_update_ultr(screen, bitmap, cliprect, 160, 191);
}
else
{
m_video->text_update_orig(screen, bitmap, cliprect, 160, 191);
}
}
else
{
@ -389,7 +396,14 @@ UINT32 napple2_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap,
if (m_video->m_mix)
{
m_video->lores_update(screen, bitmap, cliprect, 0, 159);
m_video->text_update_orig(screen, bitmap, cliprect, 160, 191);
if (!strcmp(machine().system().name, "ivelultr"))
{
m_video->text_update_ultr(screen, bitmap, cliprect, 160, 191);
}
else
{
m_video->text_update_orig(screen, bitmap, cliprect, 160, 191);
}
}
else
{
@ -399,7 +413,14 @@ UINT32 napple2_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap,
}
else
{
m_video->text_update_orig(screen, bitmap, cliprect, 0, 191);
if (!strcmp(machine().system().name, "ivelultr"))
{
m_video->text_update_ultr(screen, bitmap, cliprect, 0, 191);
}
else
{
m_video->text_update_orig(screen, bitmap, cliprect, 0, 191);
}
}
return 0;

67
src/mess/video/apple2.c
View File

@ -543,7 +543,7 @@ void apple2_state::apple2_video_start(const UINT8 *vram, const UINT8 *aux_vram,
|| !strcmp(machine().system().name, "apple2p")
|| !strcmp(machine().system().name, "prav82")
|| !strcmp(machine().system().name, "prav8m")
|| !strcmp(machine().system().name, "ace100")
|| !strcmp(machine().system().name, "ivelultr")
|| !strcmp(machine().system().name, "apple2jp"))
{
int len = memregion("gfx1")->bytes();
@ -845,6 +845,40 @@ void a2_video_device::plot_text_character_orig(bitmap_ind16 &bitmap, int xpos, i
}
}
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;
@ -1160,6 +1194,37 @@ void a2_video_device::text_update_orig(screen_device &screen, bitmap_ind16 &bitm
}
}
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;

2
src/mess/video/apple2.h
View File

@ -37,6 +37,7 @@ public:
int m_sysconfig;
void text_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
void text_update_ultr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
void text_update_orig(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
void lores_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
void dlores_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
@ -50,6 +51,7 @@ protected:
private:
void 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);
void 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);
void 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);
};