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Fixed Dip Switches for 'exprraid' and clones.

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Enjoy the various notes ! ;)
This commit is contained in:
stephh 2008-10-31 02:18:02 +00:00
parent b5c6bb78fa
commit ef14884b5f
1 changed files with 188 additions and 27 deletions
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215
src/mame/drivers/exprraid.c
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@ -5,8 +5,6 @@ Express Raider - (c) 1986 Data East USA
Ernesto Corvi
ernesto@imagina.com
Last Modified 14th Jul 2003
Memory Map:
Main CPU: ( 6502 )
0000-05ff RAM
@ -21,6 +19,7 @@ Main CPU: ( 6502 )
2800-2801 Protection
3800-3800 VBblank ( bootleg 1 only )
4000-ffff SMH_ROM
ffc0-ffc0 VBblank ( bootleg 2 only )
Sound Cpu: ( 6809 )
0000-1fff RAM
@ -58,6 +57,155 @@ sign has been defaced by the bootleggers
2nd bootleg set expects to read vblank status from 0xFFC0, country warning
sign is intact, however Credit is spelt incorrectly.
Stephh's notes (based on the games M6502 code and some tests) :
1) 'exprraid'
- "@ 1986 DATA EAST USA, INC." (US)
- Number of enemies on "shoot" stages is determined by the level
(see code at 0x5d21 where location 0x0e is level number-1).
Note that time tables are coded backwards (locomotive first,
then 5th wagon, then 4th wagon ... up to 1st wagon).
This number of enemies is also supposed to be determined
by "Difficulty" settings (DSW1 bits 3 and 4).
There is however an ingame bug that reads DSW1 bits 4 and 5 :
5D2F: AD 03 18 lda $1803
5D32: 49 FF eor #$FF
5D34: 4A lsr a
5D35: 4A lsr a
5D36: 4A lsr a
5D37: 29 06 and #$06
So number of enemies is also determined by "Demo Sound" setting !
Correct code shall be :
5D37: 29 03 and #$03
- Time for each wagon on "shoot" stage is determined by the level
(see code at 0x6873 where location 0x0e is level number-1).
Note that time tables are coded backwards (locomotive first,
then 5th wagon, then 4th wagon ... up to 1st wagon).
- In the US manual, "bonus lives" settings are told be either
"Every 50000" or "50000/80000".
However, when you look at code at 0xe4a1, you'll notice that
settings shall be "50000 only" and "50000/80000".
- "Coin Mode" as well "Mode 2 Coinage" settings (DSW0 bits 0 to 4)
are undocumented in the US manual.
"Coin Mode" is tested though via code at 0xe7c5.
Coinage tables :
* 0xe7e2 : COIN1 - 0xe7ea : COIN2 (Mode 1)
* 0xe7f2 : COIN1 - 0xe7fa : COIN2 (Mode 2)
- "Force Coinage" (DSW1 bit 6) setting is undocumented in the US manual.
It is tested though via code at 0xe794.
When this Dip Switch is set to "On", pressing COIN1 or COIN2 always
adds 1 credit regardless of the "Coinage" and "Coin Mode" settings.
- At the begining of each level, you have text in upper case
which gives you some hints to pass the level or some advice.
- In this version, due to extra code at 0xfd80, you only have 4 wagons
for the "shoot" stages instead of 5.
- Continue play is always available and score is NOT reset to 0.
2) 'exprrada'
- "@ 1986 DATA EAST CORPORATION" + no code to display the Warning screen (World)
- Same way to code number of enemies in "shoot" stages as in 'exprraid'
(code at 5ce4) and same ingame bug :
5CF4: AD 03 18 lda $1803
5CF7: 49 FF eor #$FF
5CF9: 4A lsr a
5CFA: 4A lsr a
5CFB: 4A lsr a
5CFC: 29 06 and #$06
Correct code shall be :
5CFC: 29 03 and #$03
You'll notice by looking at the tables that there are sometimes
more enemies than in 'exprraid'.
- Time for each wagon on "shoot" stage is determined by the level
(see code at 0x6834 where location 0x0e is level number-1).
This time is also supposed to be determined by "Difficulty"
settings (DSW1 bits 3 and 4).
There is however an ingame bug that reads DSW1 bits 4 and 5 :
683B: AD 03 18 lda $1803
683E: 49 FF eor #$FF
6840: 4A lsr a
6841: 4A lsr a
6842: 4A lsr a
6843: 4A lsr a
6844: 29 03 and #$03
So Time is also determined by "Demo Sound" setting because of
extra "lsr a" instruction at 0x6843 !
Correct code shall be :
6843: EA nop
Fortunately, table at 0x685f is filled with 0x30 so you'll
always have 30 seconds to "clear" the wagon (which is more
than the time you have in 'exprraid').
For the locomotive, time is always set to 0x20 = 20 seconds
(which is again more than the time you have in 'exprraid').
- "Bonus lives" routine starts at 0xe49b.
- Coinage related stuff starts at 0xe78e.
Coinage tables :
* 0xe7dc : COIN1 - 0xe7e4 : COIN2 (Mode 1)
* 0xe7ec : COIN1 - 0xe7f4 : COIN2 (Mode 2)
- At the begining of each level, you have text in lower case
which doesn't give you any hints to pass the level.
- In this version, you always have 5 wagons for the "shoot" stages.
- Continue play is always available but score is reset to 0.
3) 'wexpress'
- "@ 1986 DATA EAST CORPORATION" + no code to display the Warning screen (World)
- This version is based on 'exprrada' so all comments also fit
for this set. The main difference is that reads from 0x2800
and 0x2801 (protection) are either discarded (jumps are noped
or patched) or changed to read what shall be the correct value
(reads from 0x2801 occur almost all the time).
So IMO this set looks like a World bootleg .
4) 'wexpresb'
- "@ 1986 DATA EAST CORPORATION" + extra code to display the Warning screen (Japan)
- Modified Warning screen
- This version is heavily based on 'exprrada' (even if I think
that there shall exist a "better" Japan undumped version)
so all comments also fit for this set. The main difference is
the way protection is bypassed (in a different way than 'wexpress'
as reads from 0x2801 only occur when a life is lost).
The other difference is that you can NOT continue a game.
- "Bonus lives" routine starts at 0xe4e5.
- Coinage related stuff starts at 0xe7d8.
- Coinage tables :
* 0xe826 : COIN1 - 0xe82e : COIN2 (Mode 1)
* 0xe836 : COIN1 - 0xe83e : COIN2 (Mode 2)
5) 'wexpresc'
- "@ 1986 DATA EAST CORPORATION" + extra code to display the Warning screen (Japan)
- Original Warning screen
- "CREDIT" mispelled to "CRDDIT".
- This version is heavily based on 'exprrada' (even if I think
that there shall exist a "better" Japan undumped version)
so all comments also fit for this set. The main difference is
the way protection is bypassed (in a different way than 'wexpress'
but also in a different way than 'wexpresb' as reads from 0x2801
occur when you lose a life but also on "shoot" stages).
The other difference is that you can NOT continue a game as in 'wexpresb'.
- "Bonus lives" routine starts at 0xe4e5 (same as 'wexpresb')
- Coinage related stuff starts at 0xe7d8 (same as 'wexpresb').
- Coinage tables (same as 'wexpresb') :
* 0xe826 : COIN1 - 0xe82e : COIN2 (Mode 1)
* 0xe836 : COIN1 - 0xe83e : COIN2 (Mode 2)
***************************************************************************/
#include "driver.h"
@ -148,29 +296,39 @@ static INPUT_PORTS_START( exprraid )
PORT_START("DSW0") /* DSW 0 - 0x1800 */
PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
PORT_DIPSETTING( 0x00, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x03, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x02, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x01, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 2C_1C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x10)
PORT_DIPSETTING( 0x03, DEF_STR( 1C_1C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x10)
PORT_DIPSETTING( 0x02, DEF_STR( 1C_2C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x10)
PORT_DIPSETTING( 0x03, DEF_STR( 1C_2C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x00)
PORT_DIPSETTING( 0x01, DEF_STR( 1C_3C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x10)
PORT_DIPSETTING( 0x02, DEF_STR( 1C_3C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x00)
PORT_DIPSETTING( 0x01, DEF_STR( 1C_4C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x00)
PORT_DIPSETTING( 0x00, DEF_STR( 1C_6C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x00)
PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
PORT_DIPSETTING( 0x00, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x0c, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x08, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x04, DEF_STR( 1C_3C ) )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_DIPSETTING( 0x00, DEF_STR( 4C_1C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x00)
PORT_DIPSETTING( 0x04, DEF_STR( 3C_1C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x00)
PORT_DIPSETTING( 0x00, DEF_STR( 2C_1C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x10)
PORT_DIPSETTING( 0x08, DEF_STR( 2C_1C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x00)
PORT_DIPSETTING( 0x0c, DEF_STR( 1C_1C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x10)
PORT_DIPSETTING( 0x0c, DEF_STR( 1C_1C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x00)
PORT_DIPSETTING( 0x08, DEF_STR( 1C_2C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x10)
PORT_DIPSETTING( 0x04, DEF_STR( 1C_3C ) ) PORT_CONDITION("DSW0",0x10,PORTCOND_EQUALS,0x10)
PORT_DIPNAME( 0x10, 0x10, "Coin Mode" )
PORT_DIPSETTING( 0x10, "Mode 1" ) /* tables at 0xe7e2 (COIN1) and 0xe7ea (COIN2) */
PORT_DIPSETTING( 0x00, "Mode 2" ) /* tables at 0xe7f2 (COIN1) and 0xe7fa (COIN2) */
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Flip_Screen ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x40, DEF_STR( Cocktail ) )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_DIPUNUSED( 0x80, IP_ACTIVE_LOW )
PORT_START("IN1") /* IN 1 - 0x1801 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
@ -178,32 +336,35 @@ static INPUT_PORTS_START( exprraid )
PORT_START("IN2") /* IN 2 - 0x1802 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_START("DSW1") /* IN 3 - 0x1803 */
PORT_START("DSW1") /* DSW 1 - 0x1803 */
PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
PORT_DIPSETTING( 0x01, "1" )
PORT_DIPSETTING( 0x03, "3" )
PORT_DIPSETTING( 0x02, "5" )
PORT_DIPSETTING( 0x00, DEF_STR( Infinite ) )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Bonus_Life ) )
PORT_DIPSETTING( 0x04, "50K+" )
PORT_DIPSETTING( 0x00, "50K 80K" )
PORT_DIPNAME( 0x18, 0x18, DEF_STR( Difficulty ) )
PORT_DIPSETTING( 0x10, DEF_STR( Easy ) )
PORT_DIPSETTING( 0x18, DEF_STR( Normal ) )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Bonus_Life ) ) /* see notes */
PORT_DIPSETTING( 0x00, "50k 80k" )
PORT_DIPSETTING( 0x04, "50k only" )
PORT_DIPNAME( 0x18, 0x18, DEF_STR( Difficulty ) ) /* see notes */
PORT_DIPSETTING( 0x18, DEF_STR( Easy ) )
PORT_DIPSETTING( 0x10, DEF_STR( Normal ) )
PORT_DIPSETTING( 0x08, DEF_STR( Hard ) )
PORT_DIPSETTING( 0x00, DEF_STR( Very_Hard ) )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Demo_Sounds ) )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Demo_Sounds ) ) /* see notes */
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x20, DEF_STR( On ) )
PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_DIPNAME( 0x40, 0x40, "Force Coinage = 1C/1C" ) /* see notes */
PORT_DIPSETTING( 0x40, DEF_STR( No ) )
PORT_DIPSETTING( 0x00, DEF_STR( Yes ) )
PORT_DIPUNUSED( 0x80, IP_ACTIVE_LOW )
INPUT_PORTS_END