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adding ym2413

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squashed commits:
YM2413追加中
一通り実装したけどポートへの書き込み方が不明でまだ音が出ない
細かい修正（未テスト）
resetで初期化されるのをなんとかしたい
sound 初期化と終了を追加してみた
SN76496を参考にYM2413のアップデート方法を変更してみた
stereoフラグをアップデートサイズに変更
処理順番を整理したら音が出た
stateセーブに対応してみた
addition: Support for the Japanese Mark-III extended FM sound source unit
This commit is contained in:
hiroshica 2020-02-24 13:42:53 +09:00 • committed by kub
parent 7980d47767
commit a2f24bfa7b
17 changed files with 221 additions and 56 deletions
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150
pico/sms.c
View file

@ -15,6 +15,13 @@
#include "pico_int.h"
#include "memory.h"
#include "sound/sn76496.h"
#include "sound/emu2413/emu2413.h"
extern void YM2413_regWrite(unsigned reg);
extern void YM2413_dataWrite(unsigned data);
static unsigned short ymflag = 0xffff;
static unsigned char vdp_data_read(void)
{
@ -100,42 +107,61 @@ static unsigned char z80_sms_in(unsigned short a)
unsigned char d = 0;
elprintf(EL_IO, "z80 port %04x read", a);
a &= 0xc1;
switch (a)
{
case 0x00:
case 0x01:
d = 0xff;
if((a&0xff)>= 0xf0){
switch((a&0xff))
{
case 0xf0:
// FM reg port
break;
case 0x40: /* V counter */
d = Pico.video.v_counter;
elprintf(EL_HVCNT, "V counter read: %02x", d);
case 0xf1:
// FM data port
break;
case 0x41: /* H counter */
d = Pico.m.rotate++;
elprintf(EL_HVCNT, "H counter read: %02x", d);
break;
case 0x80:
d = vdp_data_read();
break;
case 0x81:
d = vdp_ctl_read();
break;
case 0xc0: /* I/O port A and B */
d = ~((PicoIn.pad[0] & 0x3f) | (PicoIn.pad[1] << 6));
break;
case 0xc1: /* I/O port B and miscellaneous */
d = (Pico.ms.io_ctl & 0x80) | ((Pico.ms.io_ctl << 1) & 0x40) | 0x30;
d |= ~(PicoIn.pad[1] >> 2) & 0x0f;
case 0xf2:
// bit 0 = 1 active FM Pac
if (PicoIn.opt & POPT_EN_YM2413){
d = ymflag;
//printf("read FM Check = %02x\n", d);
}
break;
}
}
else{
a &= 0xc1;
switch (a)
{
case 0x00:
case 0x01:
d = 0xff;
break;
case 0x40: /* V counter */
d = Pico.video.v_counter;
elprintf(EL_HVCNT, "V counter read: %02x", d);
break;
case 0x41: /* H counter */
d = Pico.m.rotate++;
elprintf(EL_HVCNT, "H counter read: %02x", d);
break;
case 0x80:
d = vdp_data_read();
break;
case 0x81:
d = vdp_ctl_read();
break;
case 0xc0: /* I/O port A and B */
d = ~((PicoIn.pad[0] & 0x3f) | (PicoIn.pad[1] << 6));
break;
case 0xc1: /* I/O port B and miscellaneous */
d = (Pico.ms.io_ctl & 0x80) | ((Pico.ms.io_ctl << 1) & 0x40) | 0x30;
d |= ~(PicoIn.pad[1] >> 2) & 0x0f;
break;
}
}
elprintf(EL_IO, "ret = %02x", d);
return d;
}
@ -143,27 +169,52 @@ static unsigned char z80_sms_in(unsigned short a)
static void z80_sms_out(unsigned short a, unsigned char d)
{
elprintf(EL_IO, "z80 port %04x write %02x", a, d);
a &= 0xc1;
switch (a)
{
case 0x01:
Pico.ms.io_ctl = d;
break;
case 0x40:
case 0x41:
if ((d & 0x90) == 0x90)
PsndDoPSG(Pico.m.scanline);
SN76496Write(d);
break;
if((a&0xff)>= 0xf0){
switch((a&0xff))
{
case 0xf0:
// FM reg port
YM2413_regWrite(d);
//printf("write FM register = %02x\n", d);
break;
case 0xf1:
// FM data port
YM2413_dataWrite(d);
//printf("write FM data = %02x\n", d);
break;
case 0xf2:
// bit 0 = 1 active FM Pac
if (PicoIn.opt & POPT_EN_YM2413){
ymflag = d;
//printf("write FM Check = %02x\n", d);
}
break;
}
}
else{
a &= 0xc1;
switch (a)
{
case 0x01:
Pico.ms.io_ctl = d;
break;
case 0x80:
vdp_data_write(d);
break;
case 0x40:
case 0x41:
if ((d & 0x90) == 0x90)
PsndDoPSG(Pico.m.scanline);
SN76496Write(d);
break;
case 0x81:
vdp_ctl_write(d);
break;
case 0x80:
vdp_data_write(d);
break;
case 0x81:
vdp_ctl_write(d);
break;
}
}
}
@ -212,6 +263,7 @@ void PicoResetMS(void)
{
z80_reset();
PsndReset(); // pal must be known here
ymflag = 0xffff;
}
void PicoPowerMS(void)