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"Fix" Mantis bug ID 02648 (BTNAB explanations).

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This commit is contained in:
stephh 2008-11-13 22:20:46 +00:00
parent a036befa08
commit d3046b899f
1 changed files with 37 additions and 7 deletions
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44
src/mame/drivers/pbaction.c
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@ -31,6 +31,36 @@ e800 command for the sound CPU
Notes:
- pbactio2 has a ROM for a third Z80, not emulated, function unknown
Stephh's notes (based on the game Z80 code and some tests) :
- There is an ingame bug that prevents you to get a bonus life at 1000000 points
when you set the "Bonus Life" Dip Switch to "200k 1000k" :
* Bonus life table index starts at 0x63c6 (8 * 2 butes, LSB first) :
63C6: D6 63 "70k 200k" -> 04 07 03 02 01 10
63C8: DC 63 "70k 200k 1000k" -> 04 07 03 02 02 01 01 10
63CA: E4 63 "100k" -> 03 01 01 10
63CC: E8 63 "100k 300k" -> 03 01 03 03 01 10
63CE: EE 63 "100k 300k 1000k" -> 03 01 03 03 02 01 01 10
63D0: F6 63 "200k" -> 03 02 01 10
63D2: FA 63 "200k 1000k" -> 03 02 01 10 !!!
63D4: FE 63 "None" -> 01 10
* Each "pair" determines the digit number, then what shall be its value :
digit : 12 345 67
number : 99.999.990
Note that digit 1 is displayed outside the score box.
* As each digit value can only be 00 to 09, 10 as a bonus life value
means that you can't get anymore bonus life.
* Now look at 7th table : first, you notice that it's the same as the
6th table; then you find that the first bonus life at 200k and you see
the end of table "marker" (01 10) instead of having 02 01.
* As addresses and data are the same (after decryption in 'pbactio3'),
this bug affects the 3 sets.
***************************************************************************/
#include "driver.h"
@ -172,13 +202,13 @@ static INPUT_PORTS_START( pbaction )
PORT_START("DSW2")
PORT_DIPNAME( 0x07, 0x00, DEF_STR( Bonus_Life ) )
PORT_DIPSETTING( 0x01, "70K 200K 1000K" )
PORT_DIPSETTING( 0x00, "70K 200K" )
PORT_DIPSETTING( 0x04, "100K 300K 1000K" )
PORT_DIPSETTING( 0x03, "100K 300K" )
PORT_DIPSETTING( 0x02, "100K" )
PORT_DIPSETTING( 0x06, "200K 1000K" )
PORT_DIPSETTING( 0x05, "200K" )
PORT_DIPSETTING( 0x01, "70k 200k 1000k" )
PORT_DIPSETTING( 0x04, "100k 300k 1000k" )
PORT_DIPSETTING( 0x00, "70k 200k" )
PORT_DIPSETTING( 0x03, "100k 300k" )
PORT_DIPSETTING( 0x06, "200k 1000k" ) /* see notes */
PORT_DIPSETTING( 0x02, "100k" )
PORT_DIPSETTING( 0x05, "200k" )
PORT_DIPSETTING( 0x07, DEF_STR( None ) )
PORT_DIPNAME( 0x08, 0x00, "Extra" )
PORT_DIPSETTING( 0x00, DEF_STR( Easy ) )