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kodb : added notes; fixed flashing when hit instead of disappearing [Barry Harris]

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This commit is contained in:
Robbbert 2012-12-09 05:30:13 +00:00
parent b8e87ab191
commit a839e117a2
1 changed files with 27 additions and 2 deletions
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29
src/mame/drivers/fcrash.c
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@ -31,8 +31,28 @@ from 2.bin to 9.bin program eproms
---
kodb has various graphical issues, mainly with old info not being cleared away.
Also, when you are hit, you should flash, but you go invisible instead.
Also, it should be using a vblank irq value of 4. This triggers the following bootleg read/writes;
- IN1 is read at 0x992000
- IN0 is read of 0x992008
- dips continue to be read at 0x80001a
- sound command is wrote at 0x992006
- scroll 1Y is wrote at 0x980000
- scroll 1X is wrote at 0x980002
- scroll 2Y is wrote at 0x980004
- scroll 2X is wrote at 0x980006
- scroll 3Y is wrote at 0x980008
- scroll 3X is wrote at 0x98000a
- the layer enable and layer mask writes continue at 0x98000c and 0x980020-2
These read/writes are identical to those used by a Knights of the Round bootleg which uses the all sf2mdt sound
hardware. This set is currently non-working in cps1.c but I will move it here soon.
This also prevents the game from toggling the sprite address at m_cps_a_regs[0], similar to other bootlegs.
Currently the game is working somewhat, but only using the code left over from the original. If anyone wants to
do any development work on the set, (eg, find the sprite clearing issue), then this should be changed as the game
likely won't write any sprite clearing values otherwise.
None of this is hooked up currently due to issues with row scroll on the scroll2 layer.
*/
#include "emu.h"
@ -920,7 +940,7 @@ MACHINE_START_MEMBER(cps_state,kodb)
m_layer_scroll1x_offset = 0;
m_layer_scroll2x_offset = 0;
m_layer_scroll3x_offset = 0;
m_sprite_base = 0x50c8;
m_sprite_base = 0x1000;
m_sprite_list_end_marker = 0xffff;
m_sprite_x_offset = 0;
}
@ -1396,6 +1416,11 @@ DRIVER_INIT_MEMBER(cps_state, kodb)
machine().device("maincpu")->memory().space(AS_PROGRAM).install_read_handler(0x800018, 0x80001f, read16_delegate(FUNC(cps_state::cps1_dsw_r),this));
machine().device("maincpu")->memory().space(AS_PROGRAM).install_write_handler(0x800180, 0x800187, write16_delegate(FUNC(cps_state::cps1_soundlatch_w),this));
machine().device("maincpu")->memory().space(AS_PROGRAM).install_write_handler(0x980000, 0x98002f, write16_delegate(FUNC(cps_state::kodb_layer_w),this));
/* the original game alternates between 2 sprite ram areas to achieve flashing sprites - the bootleg doesn't do the write to the register to achieve this
mapping both sprite ram areas to the same bootleg sprite ram - similar to how sf2mdt works */
m_bootleg_sprite_ram = (UINT16*)machine().device("maincpu")->memory().space(AS_PROGRAM).install_ram(0x900000, 0x902fff);
machine().device("maincpu")->memory().space(AS_PROGRAM).install_ram(0x904000, 0x906fff, m_bootleg_sprite_ram); /* both of these need to be mapped */
DRIVER_INIT_CALL(cps1);
}