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itech32: make shufshot playable at least

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This commit is contained in:
dinkc64 2019-02-09 23:36:02 -05:00
parent b787c75ade
commit 49b4fbfc81
1 changed files with 28 additions and 3 deletions
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31
src/burn/drv/pst90s/d_itech32.cpp
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@ -68,6 +68,8 @@ static UINT8 DrvDips[1];
static UINT8 DrvReset;
static UINT8 DrvInputs[6];
static INT32 is_shufshot = 0;
static INT16 DrvAnalogPort0 = 0;
static INT16 DrvAnalogPort1 = 0;
static INT16 DrvAnalogPort2 = 0;
@ -2206,7 +2208,8 @@ static void __fastcall common32_main_write_word(UINT32 address, UINT16 data)
return;
}
bprintf (0, _T("MWW: %5.5x, %4.4x\n"), address, data);
if ((address&0xffff00) != 0x61ff00)
bprintf (0, _T("MWW: %5.5x, %4.4x\n"), address, data);
}
static void __fastcall common32_main_write_byte(UINT32 address, UINT8 data)
@ -2274,7 +2277,8 @@ static void __fastcall common32_main_write_byte(UINT32 address, UINT8 data)
return;
}
bprintf (0, _T("MWB: %5.5x, %2.2x\n"), address, data);
if ((address&0xffff00) != 0x61ff00)
bprintf (0, _T("MWB: %5.5x, %2.2x\n"), address, data);
}
static UINT8 wcbowl_track_read(INT32 player)
@ -2287,6 +2291,17 @@ static UINT16 track_read_8bit(INT32 player)
return (BurnTrackballRead(player, 0) & 0xff) | ((BurnTrackballRead(player, 1) & 0xff) << 8);
}
static INT32 shufshot_weird_y(INT16 ana)
{
// todo: revisit at a later time.
// "git 'r dun"-style
if (ana > 1024) ana = 1024;
if (ana < -1024) ana = -1024;
ana /= 256; // -4 - +4
ana *= 0.9; // tone it down a bit..
return (ana);
}
static UINT32 track_read_4bit(INT32 player)
{
if (tb_last_read[player] != scanline) {
@ -2306,6 +2321,12 @@ static UINT32 track_read_4bit(INT32 player)
else if (dy > 0x80) dy -= 0x100;
if (dy > 7) dy = 7;
else if (dy < -7) dy = -7;
if (is_shufshot) {
// keep shufshot happy...
dy = shufshot_weird_y((player == 0) ? DrvAnalogPort1 : DrvAnalogPort3);
}
tb_effy[player] = (tb_effy[player] + dy) & 0xff;
INT32 upper = tb_effy[player] & 15;
@ -2812,8 +2833,9 @@ static INT32 DrvGetRoms(bool bLoad)
if (bLoad) {
if (BurnLoadRom(pSndLoad[bank] + 1, i, 2)) return 1;
}
if (nSndROMLen[1]) {
if (nSndROMLen[1] || is_shufshot) {
// wcbowl,wcbowldx,wcbowl{140,165,161,16} have bank1 and 0x200000 spacing
// shufshot has 0x200000 spacing but only bank0
pSndLoad[bank] += 0x200000;
} else {
pSndLoad[bank] += ri.nLen * 2;
@ -3000,6 +3022,8 @@ static INT32 DrvExit()
Trackball_Type = -1;
is_shufshot = 0;
return 0;
}
@ -4821,6 +4845,7 @@ STD_ROM_FN(shufshot)
static INT32 ShufshotInit()
{
Trackball_Type = TB_TYPE0;
is_shufshot = 1;
return Common32BitInit(0x111a, 1, 0);
}