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* some basic BG display code

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* basic, frozen-in-time RTC
* power management device
This commit is contained in:
StapleButter
2017-01-20 01:18:30 +01:00
parent d7c1d2a2cd
commit 3e5e8f60c4
8 changed files with 460 additions and 18 deletions
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34
GPU2D.cpp
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@ -89,9 +89,11 @@ void GPU2D::Write16(u32 addr, u16 val)
{
case 0x000:
DispCnt = (DispCnt & 0xFFFF0000) | val;
printf("[L] DISPCNT=%08X\n", DispCnt);
return;
case 0x002:
DispCnt = (DispCnt & 0x0000FFFF) | (val << 16);
printf("[H] DISPCNT=%08X\n", DispCnt);
return;
case 0x008: BGCnt[0] = val; return;
@ -108,6 +110,7 @@ void GPU2D::Write32(u32 addr, u32 val)
switch (addr & 0x00000FFF)
{
case 0x000:
printf("DISPCNT=%08X\n", val);
DispCnt = val;
return;
}
@ -159,18 +162,40 @@ void GPU2D::DrawScanline(u32 line)
void GPU2D::DrawScanline_Mode1(u32 line, u16* dst)
{
u32 backdrop;
if (Num) backdrop = *(u16*)&GPU::Palette[0x400];
else backdrop = *(u16*)&GPU::Palette[0];
// TODO: color effect for backdrop
backdrop |= (backdrop<<16);
for (int i = 0; i < 256>>1; i++)
((u32*)dst)[i] = 0; // TODO: backdrop
((u32*)dst)[i] = backdrop;
switch (DispCnt & 0x7)
{
case 0:
//printf("disp %08X %04X %04X %04X %04X\n", DispCnt, BGCnt[0], BGCnt[1], BGCnt[2], BGCnt[3]);
for (int i = 3; i >= 0; i--)
{
// TODO other BGs
if ((BGCnt[3] & 0x3) == i)
{
if (DispCnt & 0x0800) DrawBG_Text_4bpp(line, dst, 3);
// todo: sprites
}
if ((BGCnt[2] & 0x3) == i)
{
if (DispCnt & 0x0400) DrawBG_Text_4bpp(line, dst, 2);
// todo: sprites
}
if ((BGCnt[1] & 0x3) == i)
{
if (DispCnt & 0x0200) DrawBG_Text_4bpp(line, dst, 1);
// todo: sprites
}
if ((BGCnt[0] & 0x3) == i)
{
DrawBG_Text_4bpp(line, dst, 0);
if (DispCnt & 0x0100) DrawBG_Text_4bpp(line, dst, 0);
// todo: sprites
}
}
@ -259,7 +284,8 @@ void GPU2D::DrawBG_Text_4bpp(u32 line, u16* dst, u32 bgnum)
}
//color = (i >> 4) + ((line >> 4) << 4);
//if (Num) color = 0;
dst[i] = curpal[color];
if (color)
dst[i] = curpal[color];
xoff++;
}