RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-08 16:38:05 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Pico PCM, only one hardcoded mode for now

Browse source 
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@444 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-05-11 19:51:59 +00:00
parent 1e6b5e39f4
commit ef4eb506de
7 changed files with 151 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

28
Pico/Pico/Pico.c
View file

@ -6,8 +6,9 @@
picohw_state PicoPicohw;
static int prev_line_cnt_irq3 = 0, prev_line_cnt_irq5 = 0;
static int fifo_bytes_line = (16000<<16)/60/262/2; // fifo bytes/line. FIXME: other rates, modes
static void PicoLineHookPico(int count)
static void PicoLinePico(int count)
{
PicoPicohw.line_counter += count;
@ -29,11 +30,18 @@ static void PicoLineHookPico(int count)
}
#endif
if ((PicoPicohw.line_counter & 3) == 0 || count > 10)
if (PicoPicohw.fifo_bytes > 0)
{
if (PicoPicohw.fifo_bytes > 0)
PicoPicohw.fifo_bytes--;
PicoPicohw.fifo_line_bytes += fifo_bytes_line * count;
if (PicoPicohw.fifo_line_bytes >= (1<<16)) {
PicoPicohw.fifo_bytes -= PicoPicohw.fifo_line_bytes >> 16;
PicoPicohw.fifo_line_bytes &= 0xffff;
if (PicoPicohw.fifo_bytes < 0)
PicoPicohw.fifo_bytes = 0;
}
}
else
PicoPicohw.fifo_line_bytes = 0;
#if 0
if (PicoPicohw.line_counter - prev_line_cnt_irq5 > 512) {
@ -44,20 +52,26 @@ static void PicoLineHookPico(int count)
#endif
}
static void PicoResetPico(void)
{
PicoPicoPCMReset();
PicoPicohw.xpcm_ptr = PicoPicohw.xpcm_buffer;
}
PICO_INTERNAL int PicoInitPico(void)
{
elprintf(EL_STATUS, "Pico detected");
PicoLineHook = PicoLineHookPico;
PicoLineHook = PicoLinePico;
PicoResetHook = PicoResetPico;
PicoAHW = PAHW_PICO;
memset(&PicoPicohw, 0, sizeof(PicoPicohw));
PicoPicohw.pen_pos[0] = 0x03c + 352/2;
PicoPicohw.pen_pos[1] = 0x200 + 252/2;
prev_line_cnt_irq3 = 0, prev_line_cnt_irq5 = 0;
prev_line_cnt_irq3 = prev_line_cnt_irq5 = 0;
// map version register
PicoDetectRegion();
elprintf(EL_STATUS, "a %x", Pico.m.hardware);
switch (Pico.m.hardware >> 6) {
case 0: PicoPicohw.r1 = 0x00; break;
case 1: PicoPicohw.r1 = 0x00; break;