Zack Buhman
6640c37a1d
- add code loading for m68k
- incomplete scsp experiments
- the register definitions should be fairly complete,
though I did not produce actual sound yet
- fix type.h definitions
- incomplete cdblock register definitions
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
#include "vdp2.h"
|
|
#include "vdp1.h"
|
|
#include "scu.h"
|
|
#include "smpc.h"
|
|
#include "sh2.h"
|
|
#include "scsp.h"
|
|
#include "m68k.h"
|
|
|
|
void fill_32(u32 * buf, u32 v, s32 n)
|
|
{
|
|
while (n > 0) {
|
|
*buf++ = v;
|
|
n -= (sizeof (u32));
|
|
}
|
|
}
|
|
|
|
void copy_16(u16 * src, u16 * dst, s32 n)
|
|
{
|
|
while (n > 0) {
|
|
*dst++ = *src++;
|
|
n -= (sizeof (u16));
|
|
}
|
|
}
|
|
|
|
static inline void put_pixel(int cx, int cy, u16 color)
|
|
{
|
|
#define CW 320
|
|
#define CH 240
|
|
int sx = (CW / 2) + cx;
|
|
int sy = (CH / 2) - cy;
|
|
vdp2.vram.u16[512 * sy + sx] = (1 << 15) | color;
|
|
}
|
|
|
|
void start(void)
|
|
{
|
|
// DISP: Please make sure to change this bit from 0 to 1 during V blank.
|
|
vdp2.reg.TVMD = ( TVMD__DISP | TVMD__LSMD__NON_INTERLACE
|
|
| TVMD__VRESO__240 | TVMD__HRESO__NORMAL_320);
|
|
|
|
//
|
|
// vdp2: bitmap mode
|
|
//
|
|
|
|
vdp2.reg.BGON = BGON__N0ON;
|
|
|
|
vdp2.reg.CHCTLA = ( CHCTLA__N0CHCN__32K_COLOR // 15 bits per pixel, RGB
|
|
| CHCTLA__N0BMSZ__512x256_DOT
|
|
| CHCTLA__N0BMEN__BITMAP_FORMAT
|
|
);
|
|
|
|
vdp2.reg.MPOFN = MPOFN__N0MP(0); // bits 2~0
|
|
// (boundary address value of the bit map pattern) =
|
|
// (map offset register value 3 bit) x 20000H
|
|
|
|
// zeroize NBG0 (black)
|
|
s32 plane_size = 512 * 256 * 2;
|
|
fill_32(&vdp2.vram.u32[0x0 / 4], (1 << 15) | (1 << 31), plane_size);
|
|
|
|
//vdp2.vram.u16[0x0 / 2] = (1 << 15) | 0x31;
|
|
//vdp2.vram.u16[((512 * 239 + 319) * 2) / 2] = (1 << 15) | 0x7fff;
|
|
|
|
put_pixel(0, 100, 0x3f);
|
|
put_pixel(0, 0, 0x7fff);
|
|
|
|
while (1) {}
|
|
}
|