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Diffstat (limited to 'src/emu/video/i8275x.c')
-rw-r--r--src/emu/video/i8275x.c82
1 files changed, 41 insertions, 41 deletions
diff --git a/src/emu/video/i8275x.c b/src/emu/video/i8275x.c
index cd52f01acf1..5e6263d9296 100644
--- a/src/emu/video/i8275x.c
+++ b/src/emu/video/i8275x.c
@@ -9,9 +9,9 @@
/*
- TODO:
+ TODO:
- - double spaced rows
+ - double spaced rows
*/
@@ -26,37 +26,37 @@
const int DMA_BURST_SPACING[] = { 0, 7, 15, 23, 31, 39, 47, 55 };
#define DOUBLE_SPACED_ROWS \
- BIT(m_param[REG_SCN1], 7)
+ BIT(m_param[REG_SCN1], 7)
#define CHARACTERS_PER_ROW \
- ((m_param[REG_SCN1] & 0x7f) + 1)
+ ((m_param[REG_SCN1] & 0x7f) + 1)
#define VRTC_ROW_COUNT \
- ((m_param[REG_SCN2] >> 5) + 1)
+ ((m_param[REG_SCN2] >> 5) + 1)
#define CHARACTER_ROWS_PER_FRAME \
- ((m_param[REG_SCN2] & 0x3f) + 1)
+ ((m_param[REG_SCN2] & 0x3f) + 1)
#define UNDERLINE \
- (m_param[REG_SCN3] >> 4)
+ (m_param[REG_SCN3] >> 4)
#define SCANLINES_PER_ROW \
- ((m_param[REG_SCN3] & 0x0f) + 1)
+ ((m_param[REG_SCN3] & 0x0f) + 1)
#define OFFSET_LINE_COUNTER \
- BIT(m_param[REG_SCN4], 7)
+ BIT(m_param[REG_SCN4], 7)
#define VISIBLE_FIELD_ATTRIBUTE \
- BIT(m_param[REG_SCN4], 6)
+ BIT(m_param[REG_SCN4], 6)
#define CURSOR_FORMAT \
- ((m_param[REG_SCN4] >> 4) & 0x03)
+ ((m_param[REG_SCN4] >> 4) & 0x03)
#define HRTC_COUNT \
- (((m_param[REG_SCN4] & 0x0f) + 1) * 2)
+ (((m_param[REG_SCN4] & 0x0f) + 1) * 2)
#define DMA_BURST_COUNT \
- (1 << (m_param[REG_DMA] & 0x03))
+ (1 << (m_param[REG_DMA] & 0x03))
#define DMA_BURST_SPACE \
DMA_BURST_SPACING[(m_param[REG_DMA] >> 2) & 0x07]
@@ -80,23 +80,23 @@ const device_type I8275x = &device_creator<i8275x_device>;
//-------------------------------------------------
i8275x_device::i8275x_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
- : device_t(mconfig, I8275x, "I8275", tag, owner, clock),
- m_status(0),
- m_param_idx(0),
- m_param_end(0),
- m_buffer_idx(0),
- m_fifo_next(false),
- m_buffer_dma(0),
- m_lpen(0),
- m_hlgt(0),
- m_vsp(0),
- m_gpa(0),
- m_rvv(0),
- m_lten(0),
- m_scanline(0),
- m_du(false),
- m_cursor_blink(0),
- m_char_blink(0)
+ : device_t(mconfig, I8275x, "I8275", tag, owner, clock),
+ m_status(0),
+ m_param_idx(0),
+ m_param_end(0),
+ m_buffer_idx(0),
+ m_fifo_next(false),
+ m_buffer_dma(0),
+ m_lpen(0),
+ m_hlgt(0),
+ m_vsp(0),
+ m_gpa(0),
+ m_rvv(0),
+ m_lten(0),
+ m_scanline(0),
+ m_du(false),
+ m_cursor_blink(0),
+ m_char_blink(0)
{
}
@@ -253,10 +253,10 @@ void i8275x_device::device_timer(emu_timer &timer, device_timer_id id, int param
m_lten = 0;
m_du = false;
-
+
m_cursor_blink++;
m_cursor_blink &= 0x1f;
-
+
m_char_blink++;
m_char_blink &= 0x3f;
}
@@ -267,7 +267,7 @@ void i8275x_device::device_timer(emu_timer &timer, device_timer_id id, int param
m_buffer_dma = !m_buffer_dma;
m_buffer_idx = 0;
m_fifo_idx = 0;
-
+
if (!m_du && ((m_scanline < m_vrtc_scanline - SCANLINES_PER_ROW) || (m_scanline == m_vrtc_drq_scanline)))
{
// start DMA burst
@@ -299,9 +299,9 @@ void i8275x_device::device_timer(emu_timer &timer, device_timer_id id, int param
if (!VISIBLE_FIELD_ATTRIBUTE)
{
int fifo_idx = 0;
-
+
data = m_fifo[!m_buffer_dma][fifo_idx];
-
+
fifo_idx++;
fifo_idx &= 0xf;
}
@@ -345,7 +345,7 @@ void i8275x_device::device_timer(emu_timer &timer, device_timer_id id, int param
lc = (lc - 1) & 0x0f;
}
- m_display_pixels_func(this, m_bitmap,
+ m_display_pixels_func(this, m_bitmap,
sx * m_hpixels_per_column, // x position on screen of starting point
m_scanline, // y position on screen
lc, // current line of char
@@ -395,7 +395,7 @@ READ8_MEMBER( i8275x_device::read )
if (m_param_idx > m_param_end)
{
m_status |= ST_IC;
- }
+ }
}
return data;
@@ -417,10 +417,10 @@ WRITE8_MEMBER( i8275x_device::write )
case CMD_RESET:
logerror("I8275 '%s' Reset\n", tag());
- m_status &= ~ST_IE;
+ m_status &= ~ST_IE;
logerror("I8275 '%s' IRQ 0\n", tag());
m_out_irq_func(CLEAR_LINE);
-
+
m_param_idx = REG_SCN1;
m_param_end = REG_SCN4;
break;
@@ -474,7 +474,7 @@ WRITE8_MEMBER( i8275x_device::write )
if (m_param_idx == REG_SCN4)
{
- recompute_parameters();
+ recompute_parameters();
}
m_param_idx++;
@@ -505,7 +505,7 @@ WRITE8_MEMBER( i8275x_device::dack_w )
else
{
m_buffer[m_buffer_dma][m_buffer_idx++] = data;
-
+
if (!VISIBLE_FIELD_ATTRIBUTE && ((data & 0xc0) == 0x80))
{
m_fifo_next = true;