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Diffstat (limited to 'src/devices/bus/nubus/nubus_cb264.cpp')
-rw-r--r--src/devices/bus/nubus/nubus_cb264.cpp52
1 files changed, 22 insertions, 30 deletions
diff --git a/src/devices/bus/nubus/nubus_cb264.cpp b/src/devices/bus/nubus/nubus_cb264.cpp
index db964ec2055..db1fd821a11 100644
--- a/src/devices/bus/nubus/nubus_cb264.cpp
+++ b/src/devices/bus/nubus/nubus_cb264.cpp
@@ -17,6 +17,9 @@
#include "nubus_cb264.h"
#include "screen.h"
+#include <algorithm>
+
+
#define CB264_SCREEN_NAME "cb264_screen"
#define CB264_ROM_REGION "cb264_rom"
@@ -122,10 +125,6 @@ void nubus_cb264_device::device_reset()
uint32_t nubus_cb264_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- uint32_t *scanline, *base;
- int x, y;
- uint8_t pixels;
-
if (!m_cb264_vbl_disable)
{
raise_slot_irq();
@@ -134,12 +133,12 @@ uint32_t nubus_cb264_device::screen_update(screen_device &screen, bitmap_rgb32 &
switch (m_cb264_mode)
{
case 0: // 1 bpp
- for (y = 0; y < 480; y++)
+ for (int y = 0; y < 480; y++)
{
- scanline = &bitmap.pix32(y);
- for (x = 0; x < 640/8; x++)
+ uint32_t *scanline = &bitmap.pix(y);
+ for (int x = 0; x < 640/8; x++)
{
- pixels = m_vram[(y * 1024) + (BYTE4_XOR_BE(x))];
+ uint8_t const pixels = m_vram[(y * 1024) + (BYTE4_XOR_BE(x))];
*scanline++ = m_palette[pixels&0x80];
*scanline++ = m_palette[(pixels<<1)&0x80];
@@ -154,12 +153,12 @@ uint32_t nubus_cb264_device::screen_update(screen_device &screen, bitmap_rgb32 &
break;
case 1: // 2 bpp (3f/7f/bf/ff)
- for (y = 0; y < 480; y++)
+ for (int y = 0; y < 480; y++)
{
- scanline = &bitmap.pix32(y);
- for (x = 0; x < 640/4; x++)
+ uint32_t *scanline = &bitmap.pix(y);
+ for (int x = 0; x < 640/4; x++)
{
- pixels = m_vram[(y * 1024) + (BYTE4_XOR_BE(x))];
+ uint8_t const pixels = m_vram[(y * 1024) + (BYTE4_XOR_BE(x))];
*scanline++ = m_palette[pixels&0xc0];
*scanline++ = m_palette[(pixels<<2)&0xc0];
@@ -170,13 +169,12 @@ uint32_t nubus_cb264_device::screen_update(screen_device &screen, bitmap_rgb32 &
break;
case 2: // 4 bpp
- for (y = 0; y < 480; y++)
+ for (int y = 0; y < 480; y++)
{
- scanline = &bitmap.pix32(y);
-
- for (x = 0; x < 640/2; x++)
+ uint32_t *scanline = &bitmap.pix(y);
+ for (int x = 0; x < 640/2; x++)
{
- pixels = m_vram[(y * 1024) + (BYTE4_XOR_BE(x))];
+ uint8_t const pixels = m_vram[(y * 1024) + (BYTE4_XOR_BE(x))];
*scanline++ = m_palette[pixels&0xf0];
*scanline++ = m_palette[(pixels<<4)&0xf0];
@@ -185,13 +183,12 @@ uint32_t nubus_cb264_device::screen_update(screen_device &screen, bitmap_rgb32 &
break;
case 3: // 8 bpp
- for (y = 0; y < 480; y++)
+ for (int y = 0; y < 480; y++)
{
- scanline = &bitmap.pix32(y);
-
- for (x = 0; x < 640; x++)
+ uint32_t *scanline = &bitmap.pix(y);
+ for (int x = 0; x < 640; x++)
{
- pixels = m_vram[(y * 1024) + (BYTE4_XOR_BE(x))];
+ uint8_t const pixels = m_vram[(y * 1024) + (BYTE4_XOR_BE(x))];
*scanline++ = m_palette[pixels];
}
}
@@ -200,16 +197,11 @@ uint32_t nubus_cb264_device::screen_update(screen_device &screen, bitmap_rgb32 &
case 4: // 24 bpp
case 7: // ???
{
- uint32_t *vram32 = (uint32_t *)&m_vram[0];
+ uint32_t const *const vram32 = (uint32_t *)&m_vram[0];
- for (y = 0; y < 480; y++)
+ for (int y = 0; y < 480; y++)
{
- scanline = &bitmap.pix32(y);
- base = &vram32[y * 1024];
- for (x = 0; x < 640; x++)
- {
- *scanline++ = *base++;
- }
+ std::copy_n(&vram32[y * 1024], 640, &bitmap.pix(y));
}
}
break;