RaySollium99/libpicofe
1
0
Fork 0
mirror of https://github.com/RaySollium99/libpicofe.git synced 2025-09-05 06:47:45 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

full ym2612 save/load for 940

Browse source 
git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@495 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-06-25 21:53:53 +00:00
parent 446b090cea
commit 389aa76ee6
2 changed files with 61 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

63
gp2x/940ctl.c
View file

@ -33,7 +33,7 @@ _940_ctl_t *shared_ctl = 0;
unsigned char *mp3_mem = 0;
#define MP3_SIZE_MAX (0x400000 + 0x800000) // 12M
#define CODE940_FILE "pico940_v2.bin"
#define CODE940_FILE "pico940_v3.bin"
int crashed_940 = 0;
@ -69,7 +69,8 @@ int YM2612Write_940(unsigned int a, unsigned int v, int scanline)
//printf("%05i:%03i: ym w ([%i] %02x)\n", Pico.m.frame_count, Pico.m.scanline, a, v);
switch (a) {
switch (a)
{
case 0: /* address port 0 */
if (addr_A1 == 0 && ST_address == v)
return 0; /* address already selected, don't send this command to 940 */
@ -186,6 +187,61 @@ void YM2612PicoStateLoad_940(void)
addr_A1 = *(INT32 *) (REGS + 0x200);
}
void YM2612PicoStateSave2_940(int tat, int tbt)
{
UINT8 *ym_remote_regs, *ym_local_regs;
add_job_940(JOB940_PICOSTATESAVE2);
if (CHECK_BUSY(JOB940_PICOSTATESAVE2)) wait_busy_940(JOB940_PICOSTATESAVE2);
ym_remote_regs = (UINT8 *) shared_ctl->writebuff0;
ym_local_regs = YM2612GetRegs();
if (*(UINT32 *)(ym_remote_regs + 0x100) != 0x41534d59) {
printf("code940 didn't return valid save data\n");
return;
}
/* copy addin data only */
memcpy(ym_local_regs, ym_remote_regs, 0x20);
memcpy(ym_local_regs + 0x100, ym_remote_regs + 0x100, 0x30);
memcpy(ym_local_regs + 0x0b8, ym_remote_regs + 0x0b8, 0x48);
memcpy(ym_local_regs + 0x1b8, ym_remote_regs + 0x1b8, 0x48);
*(INT32 *)(ym_local_regs + 0x108) = tat;
*(INT32 *)(ym_local_regs + 0x10c) = tbt;
}
int YM2612PicoStateLoad2_940(int *tat, int *tbt)
{
UINT8 *ym_remote_regs, *ym_local_regs;
ym_local_regs = YM2612GetRegs();
ym_remote_regs = (UINT8 *) shared_ctl->writebuff0;
if (*(UINT32 *)(ym_local_regs + 0x100) != 0x41534d59)
return -1;
*tat = *(INT32 *)(ym_local_regs + 0x108);
*tbt = *(INT32 *)(ym_local_regs + 0x10c);
if (CHECK_BUSY(JOB940_YM2612UPDATEONE)) wait_busy_940(JOB940_YM2612UPDATEONE);
/* flush writes */
if (shared_ctl->writebuffsel == 1) {
shared_ctl->writebuff0[writebuff_ptr & 0xffff] = 0xffff;
} else {
shared_ctl->writebuff1[writebuff_ptr & 0xffff] = 0xffff;
}
shared_ctl->writebuffsel ^= 1;
writebuff_ptr = 0;
add_job_940(JOB940_PICOSTATELOAD2_PREP);
if (CHECK_BUSY(JOB940_PICOSTATELOAD2_PREP)) wait_busy_940(JOB940_PICOSTATELOAD2_PREP);
memcpy(ym_remote_regs, ym_local_regs, 0x200);
add_job_940(JOB940_PICOSTATELOAD2);
if (CHECK_BUSY(JOB940_PICOSTATELOAD2)) wait_busy_940(JOB940_PICOSTATELOAD2);
return 0;
}
static void internal_reset(void)
{
@ -200,7 +256,7 @@ void sharedmem_init(void)
if (shared_mem != NULL) return;
shared_mem = (unsigned char *) mmap(0, 0x210000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0x2000000);
if(shared_mem == MAP_FAILED)
if (shared_mem == MAP_FAILED)
{
printf("mmap(shared_data) failed with %i\n", errno);
exit(1);
@ -230,7 +286,6 @@ void sharedmem_deinit(void)
extern char **g_argv;
/* none of the functions in this file should be called before this one */
void YM2612Init_940(int baseclock, int rate)
{
printf("YM2612Init_940()\n");

2
gp2x/940ctl.h
View file

@ -9,3 +9,5 @@ int YM2612Write_940(unsigned int a, unsigned int v, int scanline);
int YM2612PicoTick_940(int n);
void YM2612PicoStateLoad_940(void);
void YM2612PicoStateSave2_940(int tat, int tbt);
int YM2612PicoStateLoad2_940(int *tat, int *tbt);