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spg2xx_skannerztv.cpp
438 lines (408 loc) · 16.4 KB
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spg2xx_skannerztv.cpp
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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz, David Haywood
// Skannerz TV
/* I/O related notes from Tahg
Summary:
SEND(from console) RECEIVE (to console)
--- Load monsters / items
1 2
128 + 0 M/I[0] HIBYTE, LOBYTE
... ...
128 + 99 M/I[99] HIBYTE, LOBYTE
--- Save monsters / items
4 5
128 + 0, M/I[0] HIBYTE, LOBYTE 6
... ...
128 + 99, M/I[99] HIBYTE, LOBYTE 6
--- Buttons
3 BHI, BLO
Buttons
BLO:
Bit 0 Up
Bit 1 Down
Bit 2 2/B
Bit 3 1/A
Bit 4 Left
Bit 5 Right
Bit 6 Unused
Bit 7 Unused
BHI: Unused
Port A
Bit 0 Enable "Left" Controller
Bit 1 Enable "Right" Controller
Player
0:
8:
B:
D:
E:
65: monsters
B5: items
doPlayer(player)
var_3 = player - 1
pData = Player[var_3]
switch(PlayerState[var_3])
case 0: // Request controller -> console state
r1 = 79
while(--r1 >= 0)
PlayerState[var_3] = 1
P_UART_Ctrl |= TxEn
P_UART_Ctrl |= TxIntEn
while(P_UART_Status & TXBUSY)
P_UART_Ctrl &= ~RxEn
P_UART_TxBuf = 1
WaitCycle[var_3] = 6
CurMI[var_3] = 0
break
case 1: // Receive controller -> console state (expects 2)
if(Uartp != Uartg)
byte_1241 = UARTBuffer[Uartg]
if(byte_1241 == 2)
PlayerState[var_3] = 2
InitPlayer(var_3)
Uartg = Uartg == 7 ? 0 : Uartg + 1
break
case 2: // Sync monster / item
if(CurMI[var_3] != 100)
var_6 = CurMI[var_3] | 80h
while(P_UART_Status & TXBUSY)
P_UART_Ctrl &= ~RxEn
P_UART_TxBuf = var_6
PlayerState[var_3] = 3
WaitCycle[var_3] = 6
Retries[var_3] = 3
CurRecByte[var_3] = 0
else if(player == 1 && byte_1238 & 100h)
PlayerState[var_3] = 6
byte_1238 &= ~100h
else if(player == 2 && byte_1238 & 200h)
PlayerState[var_3] = 6
byte_1238 &= ~200h
else
PlayerState[var_3] = 4
if(player == 1)
P_IOA_Buffer |= 1
byte_1238 |= 11
else if(player == 2)
P_IOA_Buffer |= 2
byte_1238 |= 22
break
case 3: // Receive monster / item
if(Uartp != Uartg)
r4 = CurMI[var_3]
var_A = UARTBuffer[Uartg]
if(CurRecByte[var_3] == 0)
if(r4 > 79)
pData.items[r4-80] = var_A << 8
else pData.monsters[r4] = var_A << 8
CurRecByte[var_3] += 1
else if(CurRecByte[var_3] == 1)
if(r4 > 79)
pData.items[r4-80] |= var_A
else pData.monsters[r4] |= var_A
PlayerState[var_3] = 2
CurMI[var_3] += 1
Uartg = Uartg == 7 ? 0 : Uartg + 1
break
case 4:
if(player == 1)
if((byte_1238 & 4) == 0)
byte_1238 |= 4
r1 = 79
while(--r1 >= 0)
while(P_UART_Status & TXBUSY)
else break
else if(player == 2)
if((byte_1238 & 8) == 0)
byte_1238 |= 8
r1 = 79
while(--r1 >= 0)
while(P_UART_Status & TXBUSY)
break
else break
else break
P_UART_Ctrl &= ~RxEn
P_UART_TxBuf = 3
PlayerState[var_3] = 5
WaitCycle[var_3] = 6
Retries[var_3] = 3
CurRecByte[var_3] = 0
break
case 5:
if(Uartp != Uartg)
var_4 = CurRecByte[var_3]
if(var_4 == 0)
byte_1242[var_3] = UARTBuffer[Uartg] & 3fh
CurRecByte[var_3] += 1
else if(var_4 == 1)
byte_1234[var_3] = UARTBuffer[Uartg] & 3fh
PlayerState = 2
WaitCycle[var_3] = 0
if(player == 1)
P_IOA_Buffer |= 1
byte_1238 &= ~4
else if(player == 2)
P_IOA_Buffer |= 2
byte_1238 &= ~8
Uartg = Uartg == 7 ? 0 : Uartg + 1
break:
case 6: // Request console -> controller state
r1 = 79
while(--r1 >= 0)
while(P_UART_Status & TXBUSY)
P_UART_Ctrl &= ~RxEn
P_UART_TxBuf = 4
PlayerState[var_3] = 7
WaitCycle[var_3] = 6
CurMI[var_3] = 0
Retries[var_3] = 3
case 7: // Receive console -> controller state (expects 5)
if(Uartp != Uartg)
if(UARTBuffer[Uartg] == 5)
PlayerState = 8
WaitCycle[var_3] = 6
CurSendByte[var_3] = 0
Retries[var_3] = 3
Uartg = Uartg == 7 ? 0 : Uartg + 1
break
case 8: // Send monster / item
r4 = CurMI[var_3]
if( r4 <= 99)
var_9 = CurSendByte[var_3]
var_8 = 0
if((P_UART_Status & TXBUSY) == 0)
var_8 = 1
if(var_8)
if(var_9 == 0)
var_1 = r4 | 80h
while(P_UART_Status & TXBUSY)
P_UART_Ctrl &= ~RxEn
P_UART_TxBuf = var_1
WaitCycle[var_3] = 6
CurSendByte[var_3] += 1
else if(var_9 == 1)
if (r4 <= 79)
var_1 = (pData.monsters[r4] & 0xFF00) >> 8
while(P_UART_Status & TXBUSY)
P_UART_Ctrl &= ~RxEn
P_UART_TxBuf = var_1
else
var_1 = (pData.monsters[r4-80] & 0xFF00) >> 8
while(P_UART_Status & TXBUSY)
P_UART_Ctrl &= ~RxEn
P_UART_TxBuf = var_1
WaitCycle[var_3] = 6
CurSendByte[var_3] += 1
else if(var_9 == 2)
if (r4 <= 79)
var_1 = pData.monsters[r4] & 0xFF
while(P_UART_Status & TXBUSY)
P_UART_Ctrl &= ~RxEn
P_UART_TxBuf = var_1
else
var_1 = pData.monsters[r4-80] & 0xFF
while(P_UART_Status & TXBUSY)
P_UART_Ctrl &= ~RxEn
P_UART_TxBuf = var_1
WaitCycle[var_3] = 6
CurSendByte[var_3] += 1
PlayerState[var_3] = 9
else
PlayerState = 4
if(player == 1)
P_IOA_Buffer |= 1
byte_1238 |= 4
else if(player == 2)
P_IOA_Buffer |= 2
byte_1238 |= 8
break
case 9: // Receive monster / item sent state (expects 6)
if(Uartp != Uartg)
if(UARTBuffer[Uartg] == 6)
PlayerState[var_3] = 8
WaitCycle[var_3] = 0
CurSendByte[var_3] = 0
CurMI[var_3] += 1
Retries[var_3] = 3
break
doPlayerMore(player)
doPlayerMore(player)
var_2 = WaitCycle[player-1]
if(var_2 == 0) return
var_2--
WaitCycle[player-1] = var_2
if(var_2 != 0) return
switch(PlayerState[player-1])
case 3:
if(Retries[player-1]--)
var_3 = CurMI[player-1] | 80h
while(P_UART_Status & TXBUSY)
P_UART_Ctrl = var_1 = P_UART_Ctrl & ~RxEn
P_UART_TxBuf = var_3
WaitCycle[player-1] = 6
CurRecByte[player-1] = 0
return
break
case 5:
if(Retries[player-1]--)
while(P_UART_Status & TXBUSY)
P_UART_Ctrl = var_1 = P_UART_Ctrl & ~RxEn
P_UART_TxBuf = 3
WaitCycle[player-1] = 6
CurRecByte[player-1] = 0
return
break
case 7:
if(Retries[player-1]--)
while(P_UART_Status & TXBUSY)
P_UART_Ctrl = var_1 = P_UART_Ctrl & ~RxEn
P_UART_TxBuf = 4
WaitCycle[player-1] = 6
return
break
case 9:
if(Retries[player-1]--)
PlayerState = 8
CurSendByte[player] = 0
else
ClearPlayer(player)
return
case 1:
ClearPlayer(player)
return
ClearPlayer(player)
if(player == 1)
byte_1238 |= 40h
byte_1238 &= ~10h
else if(player == 2)
byte_1238 |= 80h
byte_1238 &= ~20h
*/
#include "emu.h"
#include "spg2xx.h"
#include "machine/nvram.h"
namespace {
class skannerztv_state : public spg2xx_game_state
{
public:
skannerztv_state(const machine_config &mconfig, device_type type, const char *tag) :
spg2xx_game_state(mconfig, type, tag)
{ }
void rad_sktv(machine_config& config);
private:
};
static INPUT_PORTS_START( rad_sktv )
/* how does the Scanner connect? probably some serial port with comms protocol, not IO ports?
internal test mode shows 'uart' ports (which currently fail)
To access internal test hold DOWN and BUTTON1 together on startup until a coloured screen appears.
To cycle through the tests again hold DOWN and press BUTTON1 */
PORT_START("P1")
PORT_DIPNAME( 0x0001, 0x0001, "IN0" )
PORT_DIPSETTING( 0x0001, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0002, 0x0002, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0002, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
PORT_DIPNAME( 0x0020, 0x0020, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0020, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0040, 0x0040, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0040, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_DIPNAME( 0x0400, 0x0400, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0400, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0800, 0x0800, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0800, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x1000, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x2000, 0x2000, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x2000, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x4000, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x8000, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_START("P2")
PORT_DIPNAME( 0x0001, 0x0001, "IN1" )
PORT_DIPSETTING( 0x0001, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0002, 0x0002, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0002, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0004, 0x0004, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0004, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0008, 0x0008, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0008, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0010, 0x0010, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0010, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0020, 0x0020, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0020, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0040, 0x0040, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0040, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0080, 0x0080, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0080, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0100, 0x0100, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0100, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0200, 0x0200, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0200, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0400, 0x0400, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0400, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0800, 0x0800, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0800, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x1000, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x2000, 0x2000, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x2000, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x4000, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x8000, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_START("P3")
PORT_BIT( 0xffff, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END
void skannerztv_state::rad_sktv(machine_config &config)
{
SPG24X(config, m_maincpu, XTAL(27'000'000), m_screen);
m_maincpu->set_addrmap(AS_PROGRAM, &skannerztv_state::mem_map_4m);
spg2xx_base(config);
m_maincpu->porta_in().set(FUNC(skannerztv_state::base_porta_r));
m_maincpu->portb_in().set(FUNC(skannerztv_state::base_portb_r));
m_maincpu->portc_in().set(FUNC(skannerztv_state::base_portc_r));
//m_maincpu->i2c_w().set(FUNC(skannerztv_state::i2c_w));
//m_maincpu->i2c_r().set(FUNC(skannerztv_state::i2c_r));
}
ROM_START( rad_sktv )
ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASE00 )
ROM_LOAD16_WORD_SWAP( "skannerztv.bin", 0x000000, 0x200000, CRC(e92278e3) SHA1(eb6bee5e661128d83784960dfff50379c36bfaeb) )
/* The external scanner MCU is a Winbond from 2000: SA5641
the scanner plays sound effects when scanning, without being connected to the main unit, so a way to dump / emulate
this MCU is also needed for complete emulation
TODO: find details on MCU so that we know capacity etc. */
ROM_END
} // anonymous namespace
CONS( 2007, rad_sktv, 0, 0, rad_sktv, rad_sktv, skannerztv_state, init_crc, "Radica", "Skannerz TV", MACHINE_IMPERFECT_SOUND | MACHINE_NOT_WORKING )