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Figured out BIOS loading in Super Kaneko Nova System [Joerg Hartenberger]

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This commit is contained in:
Angelo Salese 2011-09-14 12:54:03 +00:00
parent 905523b7d9
commit fc747c1f51
1 changed files with 42 additions and 23 deletions
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63
src/mame/drivers/suprnova.c
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@ -33,8 +33,6 @@ video: Sprite Zooming - the current algorithm is leaving gaps, most noticeable
video: Sprite positions still kludged slightly (see skns_sprite_kludge) video: Sprite positions still kludged slightly (see skns_sprite_kludge)
general: bios is still being skipped, gets stuck at last bios screen if we run it (see #define BIOS_SKIP)
------------------ ------------------
SUPER-KANEKO-NOVA-SYSTEM SUPER-KANEKO-NOVA-SYSTEM
@ -154,10 +152,6 @@ NEP-16
#include "video/sknsspr.h" #include "video/sknsspr.h"
#include "includes/suprnova.h" #include "includes/suprnova.h"
#define BIOS_SKIP 1 // Skip Bios as it takes too long and doesn't complete atm.
static void hit_calc_orig(UINT16 p, UINT16 s, UINT16 org, UINT16 *l, UINT16 *r) static void hit_calc_orig(UINT16 p, UINT16 s, UINT16 org, UINT16 *l, UINT16 *r)
{ {
switch(org & 3) { switch(org & 3) {
@ -299,10 +293,37 @@ static WRITE32_HANDLER ( skns_hit_w )
static WRITE32_HANDLER ( skns_hit2_w ) static WRITE32_HANDLER ( skns_hit2_w )
{ {
UINT32 *bios = (UINT32 *)space->machine().region("maincpu")->base();
char biosid = (char)(bios[0x424>>2] >> 24);
skns_state *state = space->machine().driver_data<skns_state>(); skns_state *state = space->machine().driver_data<skns_state>();
hit_t &hit = state->m_hit; hit_t &hit = state->m_hit;
// log_event("HIT", "Set disconnect to %02x", data);
hit.disconnect = data; // Decide to unlock on country char of string "FOR xxxxx" in Bios ROM at offset 0x420
// this code simulates behaviour of protection PLD
data>>= 24;
hit.disconnect = 1;
switch (biosid)
{
case 'J':
if (data == 0) hit.disconnect= 0;
break;
case 'U':
if (data == 1) hit.disconnect= 0;
break;
case 'K':
if (data == 2) hit.disconnect= 0;
break;
case 'E':
if (data == 3) hit.disconnect= 0;
break;
case 'A':
if (data < 2) hit.disconnect= 0;
break;
// unknow country id, unlock per default
default:
hit.disconnect= 0;
break;
}
} }
@ -407,6 +428,18 @@ static TIMER_DEVICE_CALLBACK( interrupt_callback )
static MACHINE_RESET(skns) static MACHINE_RESET(skns)
{ {
UINT32 *bios = (UINT32 *)machine.region("maincpu")->base();
char biosid = (char)(bios[0x424>>2] >> 24);
skns_state *state = machine.driver_data<skns_state>();
hit_t &hit = state->m_hit;
if (biosid != 'A')
{
hit.disconnect= 1;
} else
{
hit.disconnect= 0;
}
memory_set_bankptr(machine, "bank1",machine.region("user1")->base()); memory_set_bankptr(machine, "bank1",machine.region("user1")->base());
} }
@ -828,17 +861,6 @@ static MACHINE_CONFIG_START( skns, skns_state )
MCFG_SOUND_ROUTE(1, "rspeaker", 1.0) MCFG_SOUND_ROUTE(1, "rspeaker", 1.0)
MACHINE_CONFIG_END MACHINE_CONFIG_END
/***** BIOS SKIPPING *****/
static READ32_HANDLER( bios_skip_r )
{
skns_state *state = space->machine().driver_data<skns_state>();
#if BIOS_SKIP
if ((cpu_get_pc(&space->device())==0x6f8) || (cpu_get_pc(&space->device())==0x6fa)) space->write_byte(0x06000029,1);
#endif
return state->m_main_ram[0x00028/4];
}
/***** IDLE SKIPPING *****/ /***** IDLE SKIPPING *****/
static READ32_HANDLER( gutsn_speedup_r ) static READ32_HANDLER( gutsn_speedup_r )
@ -969,9 +991,6 @@ static void init_skns(running_machine &machine)
{ {
// init DRC to fastest options // init DRC to fastest options
sh2drc_set_options(machine.device("maincpu"), SH2DRC_FASTEST_OPTIONS); sh2drc_set_options(machine.device("maincpu"), SH2DRC_FASTEST_OPTIONS);
sh2drc_add_pcflush(machine.device("maincpu"), 0x6f8);
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_read_handler(0x6000028, 0x600002b, FUNC(bios_skip_r) );
} }
static void set_drc_pcflush(running_machine &machine, UINT32 addr) static void set_drc_pcflush(running_machine &machine, UINT32 addr)