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artmagic.c: moved protection handlers to the driver class (nw)

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This commit is contained in:
Ivan Vangelista 2014-09-24 16:22:10 +00:00
parent b09c35e155
commit acbe2e90b2
2 changed files with 103 additions and 101 deletions
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193
src/mame/drivers/artmagic.c
View File

@ -148,36 +148,35 @@ READ16_MEMBER(artmagic_state::ultennis_hack_r)
*
*************************************/
static void ultennis_protection(running_machine &machine)
void artmagic_state::ultennis_protection()
{
artmagic_state *state = machine.driver_data<artmagic_state>();
/* check the command byte */
switch (state->m_prot_input[0])
switch (m_prot_input[0])
{
case 0x00: /* reset */
state->m_prot_input_index = state->m_prot_output_index = 0;
state->m_prot_output[0] = machine.rand();
m_prot_input_index = m_prot_output_index = 0;
m_prot_output[0] = machine().rand();
break;
case 0x01: /* 01 aaaa bbbb cccc dddd (xxxx) */
if (state->m_prot_input_index == 9)
if (m_prot_input_index == 9)
{
UINT16 a = state->m_prot_input[1] | (state->m_prot_input[2] << 8);
UINT16 b = state->m_prot_input[3] | (state->m_prot_input[4] << 8);
UINT16 c = state->m_prot_input[5] | (state->m_prot_input[6] << 8);
UINT16 d = state->m_prot_input[7] | (state->m_prot_input[8] << 8);
UINT16 a = m_prot_input[1] | (m_prot_input[2] << 8);
UINT16 b = m_prot_input[3] | (m_prot_input[4] << 8);
UINT16 c = m_prot_input[5] | (m_prot_input[6] << 8);
UINT16 d = m_prot_input[7] | (m_prot_input[8] << 8);
UINT16 x = a - b;
if ((INT16)x >= 0)
x = (x * c) >> 16;
else
x = -(((UINT16)-x * c) >> 16);
x += d;
state->m_prot_output[0] = x;
state->m_prot_output[1] = x >> 8;
state->m_prot_output_index = 0;
m_prot_output[0] = x;
m_prot_output[1] = x >> 8;
m_prot_output_index = 0;
}
else if (state->m_prot_input_index >= 11)
state->m_prot_input_index = 0;
else if (m_prot_input_index >= 11)
m_prot_input_index = 0;
break;
case 0x02: /* 02 aaaa bbbb cccc (xxxxxxxx) */
@ -194,67 +193,66 @@ static void ultennis_protection(running_machine &machine)
question is: what is the 3rd value doing there?
*/
if (state->m_prot_input_index == 7)
if (m_prot_input_index == 7)
{
UINT16 a = (INT16)(state->m_prot_input[1] | (state->m_prot_input[2] << 8));
UINT16 b = (INT16)(state->m_prot_input[3] | (state->m_prot_input[4] << 8));
/*UINT16 c = (INT16)(state->m_prot_input[5] | (state->m_prot_input[6] << 8));*/
UINT16 a = (INT16)(m_prot_input[1] | (m_prot_input[2] << 8));
UINT16 b = (INT16)(m_prot_input[3] | (m_prot_input[4] << 8));
/*UINT16 c = (INT16)(m_prot_input[5] | (m_prot_input[6] << 8));*/
UINT32 x = a * a * (b/2);
state->m_prot_output[0] = x;
state->m_prot_output[1] = x >> 8;
state->m_prot_output[2] = x >> 16;
state->m_prot_output[3] = x >> 24;
state->m_prot_output_index = 0;
m_prot_output[0] = x;
m_prot_output[1] = x >> 8;
m_prot_output[2] = x >> 16;
m_prot_output[3] = x >> 24;
m_prot_output_index = 0;
}
else if (state->m_prot_input_index >= 11)
state->m_prot_input_index = 0;
else if (m_prot_input_index >= 11)
m_prot_input_index = 0;
break;
case 0x03: /* 03 (xxxx) */
if (state->m_prot_input_index == 1)
if (m_prot_input_index == 1)
{
UINT16 x = state->m_prot_save;
state->m_prot_output[0] = x;
state->m_prot_output[1] = x >> 8;
state->m_prot_output_index = 0;
UINT16 x = m_prot_save;
m_prot_output[0] = x;
m_prot_output[1] = x >> 8;
m_prot_output_index = 0;
}
else if (state->m_prot_input_index >= 3)
state->m_prot_input_index = 0;
else if (m_prot_input_index >= 3)
m_prot_input_index = 0;
break;
case 0x04: /* 04 aaaa */
if (state->m_prot_input_index == 3)
if (m_prot_input_index == 3)
{
UINT16 a = state->m_prot_input[1] | (state->m_prot_input[2] << 8);
state->m_prot_save = a;
state->m_prot_input_index = state->m_prot_output_index = 0;
UINT16 a = m_prot_input[1] | (m_prot_input[2] << 8);
m_prot_save = a;
m_prot_input_index = m_prot_output_index = 0;
}
break;
default:
logerror("protection command %02X: unknown\n", state->m_prot_input[0]);
state->m_prot_input_index = state->m_prot_output_index = 0;
logerror("protection command %02X: unknown\n", m_prot_input[0]);
m_prot_input_index = m_prot_output_index = 0;
break;
}
}
static void cheesech_protection(running_machine &machine)
void artmagic_state::cheesech_protection()
{
artmagic_state *state = machine.driver_data<artmagic_state>();
/* check the command byte */
switch (state->m_prot_input[0])
switch (m_prot_input[0])
{
case 0x00: /* reset */
state->m_prot_input_index = state->m_prot_output_index = 0;
state->m_prot_output[0] = machine.rand();
m_prot_input_index = m_prot_output_index = 0;
m_prot_output[0] = machine().rand();
break;
case 0x01: /* 01 aaaa bbbb (xxxx) */
if (state->m_prot_input_index == 5)
if (m_prot_input_index == 5)
{
UINT16 a = state->m_prot_input[1] | (state->m_prot_input[2] << 8);
UINT16 b = state->m_prot_input[3] | (state->m_prot_input[4] << 8);
UINT16 a = m_prot_input[1] | (m_prot_input[2] << 8);
UINT16 b = m_prot_input[3] | (m_prot_input[4] << 8);
UINT16 c = 0x4000; /* seems to be hard-coded */
UINT16 d = 0x00a0; /* seems to be hard-coded */
UINT16 x = a - b;
@ -263,106 +261,105 @@ static void cheesech_protection(running_machine &machine)
else
x = -(((UINT16)-x * c) >> 16);
x += d;
state->m_prot_output[0] = x;
state->m_prot_output[1] = x >> 8;
state->m_prot_output_index = 0;
m_prot_output[0] = x;
m_prot_output[1] = x >> 8;
m_prot_output_index = 0;
}
else if (state->m_prot_input_index >= 7)
state->m_prot_input_index = 0;
else if (m_prot_input_index >= 7)
m_prot_input_index = 0;
break;
case 0x03: /* 03 (xxxx) */
if (state->m_prot_input_index == 1)
if (m_prot_input_index == 1)
{
UINT16 x = state->m_prot_save;
state->m_prot_output[0] = x;
state->m_prot_output[1] = x >> 8;
state->m_prot_output_index = 0;
UINT16 x = m_prot_save;
m_prot_output[0] = x;
m_prot_output[1] = x >> 8;
m_prot_output_index = 0;
}
else if (state->m_prot_input_index >= 3)
state->m_prot_input_index = 0;
else if (m_prot_input_index >= 3)
m_prot_input_index = 0;
break;
case 0x04: /* 04 aaaa */
if (state->m_prot_input_index == 3)
if (m_prot_input_index == 3)
{
UINT16 a = state->m_prot_input[1] | (state->m_prot_input[2] << 8);
state->m_prot_save = a;
state->m_prot_input_index = state->m_prot_output_index = 0;
UINT16 a = m_prot_input[1] | (m_prot_input[2] << 8);
m_prot_save = a;
m_prot_input_index = m_prot_output_index = 0;
}
break;
default:
logerror("protection command %02X: unknown\n", state->m_prot_input[0]);
state->m_prot_input_index = state->m_prot_output_index = 0;
logerror("protection command %02X: unknown\n", m_prot_input[0]);
m_prot_input_index = m_prot_output_index = 0;
break;
}
}
static void stonebal_protection(running_machine &machine)
void artmagic_state::stonebal_protection()
{
artmagic_state *state = machine.driver_data<artmagic_state>();
/* check the command byte */
switch (state->m_prot_input[0])
switch (m_prot_input[0])
{
case 0x01: /* 01 aaaa bbbb cccc dddd (xxxx) */
if (state->m_prot_input_index == 9)
if (m_prot_input_index == 9)
{
UINT16 a = state->m_prot_input[1] | (state->m_prot_input[2] << 8);
UINT16 b = state->m_prot_input[3] | (state->m_prot_input[4] << 8);
UINT16 c = state->m_prot_input[5] | (state->m_prot_input[6] << 8);
UINT16 d = state->m_prot_input[7] | (state->m_prot_input[8] << 8);
UINT16 a = m_prot_input[1] | (m_prot_input[2] << 8);
UINT16 b = m_prot_input[3] | (m_prot_input[4] << 8);
UINT16 c = m_prot_input[5] | (m_prot_input[6] << 8);
UINT16 d = m_prot_input[7] | (m_prot_input[8] << 8);
UINT16 x = a - b;
if ((INT16)x >= 0)
x = (x * d) >> 16;
else
x = -(((UINT16)-x * d) >> 16);
x += c;
state->m_prot_output[0] = x;
state->m_prot_output[1] = x >> 8;
state->m_prot_output_index = 0;
m_prot_output[0] = x;
m_prot_output[1] = x >> 8;
m_prot_output_index = 0;
}
else if (state->m_prot_input_index >= 11)
state->m_prot_input_index = 0;
else if (m_prot_input_index >= 11)
m_prot_input_index = 0;
break;
case 0x02: /* 02 aaaa (xx) */
if (state->m_prot_input_index == 3)
if (m_prot_input_index == 3)
{
/*UINT16 a = state->m_prot_input[1] | (state->m_prot_input[2] << 8);*/
/*UINT16 a = m_prot_input[1] | (m_prot_input[2] << 8);*/
UINT8 x = 0xa5;
state->m_prot_output[0] = x;
state->m_prot_output_index = 0;
m_prot_output[0] = x;
m_prot_output_index = 0;
}
else if (state->m_prot_input_index >= 4)
state->m_prot_input_index = 0;
else if (m_prot_input_index >= 4)
m_prot_input_index = 0;
break;
case 0x03: /* 03 (xxxx) */
if (state->m_prot_input_index == 1)
if (m_prot_input_index == 1)
{
UINT16 x = state->m_prot_save;
state->m_prot_output[0] = x;
state->m_prot_output[1] = x >> 8;
state->m_prot_output_index = 0;
UINT16 x = m_prot_save;
m_prot_output[0] = x;
m_prot_output[1] = x >> 8;
m_prot_output_index = 0;
}
else if (state->m_prot_input_index >= 3)
state->m_prot_input_index = 0;
else if (m_prot_input_index >= 3)
m_prot_input_index = 0;
break;
case 0x04: /* 04 aaaa */
if (state->m_prot_input_index == 3)
if (m_prot_input_index == 3)
{
UINT16 a = state->m_prot_input[1] | (state->m_prot_input[2] << 8);
state->m_prot_save = a;
state->m_prot_input_index = state->m_prot_output_index = 0;
UINT16 a = m_prot_input[1] | (m_prot_input[2] << 8);
m_prot_save = a;
m_prot_input_index = m_prot_output_index = 0;
}
break;
default:
logerror("protection command %02X: unknown\n", state->m_prot_input[0]);
state->m_prot_input_index = state->m_prot_output_index = 0;
logerror("protection command %02X: unknown\n", m_prot_input[0]);
m_prot_input_index = m_prot_output_index = 0;
break;
}
}
@ -393,7 +390,7 @@ WRITE16_MEMBER(artmagic_state::protection_bit_w)
m_prot_bit_index = 0;
/* update the protection state */
(*m_protection_handler)(machine());
(this->*m_protection_handler)();
}
}

11
src/mame/includes/artmagic.h
View File

@ -32,6 +32,8 @@ public:
required_device<tlc34076_device> m_tlc34076;
required_shared_ptr<UINT16> m_control;
required_shared_ptr<UINT16> m_vram0;
required_shared_ptr<UINT16> m_vram1;
UINT8 m_tms_irq;
UINT8 m_hack_irq;
@ -42,9 +44,12 @@ public:
UINT8 m_prot_output_bit;
UINT8 m_prot_bit_index;
UINT16 m_prot_save;
void (*m_protection_handler)(running_machine &);
required_shared_ptr<UINT16> m_vram0;
required_shared_ptr<UINT16> m_vram1;
typedef void (artmagic_state::*prot_func)();
prot_func m_protection_handler;
void ultennis_protection();
void cheesech_protection();
void stonebal_protection();
int m_xor[16];
int m_is_stoneball;
UINT16 *m_blitter_base;