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dec0: use input merger device for 6502 irq

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hap 2024-10-23 15:25:50 +02:00
parent d5d216f410
commit 11b0427591
2 changed files with 22 additions and 19 deletions
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38
src/mame/dataeast/dec0.cpp
View file

@ -3,32 +3,33 @@
// thanks-to:Richard Bush
/***************************************************************************
Data East 16 bit games - Bryan McPhail, mish@tendril.co.uk
Data East 16 bit games - Bryan McPhail, mish@tendril.co.uk
Heavy Barrel, Bad Dudes, Robocop, Birdie Try & Hippodrome use the 'MEC-M1'
Heavy Barrel, Bad Dudes, Robocop, Birdie Try & Hippodrome use the 'MEC-M1'
motherboard and varying game boards. Sly Spy, Midnight Resistance and
Boulder Dash use the same graphics chips but are different pcbs.
Bandit (USA) is almost certainly a field test prototype, the software runs
on a Heavy Barrel board with the original Heavy Barrel MCU (which is effectively
not used). There is also Japanese version known to run on a DE-0321-1 top board.
Bandit (USA) is almost certainly a field test prototype, the software runs
on a Heavy Barrel board with the original Heavy Barrel MCU (which is effectively
not used). There is also Japanese version known to run on a DE-0321-1 top board.
There are Secret Agent (bootleg) and Robocop (bootleg) sets to add.
There are Secret Agent (bootleg) and Robocop (bootleg) sets to add.
Thanks to Gouky & Richard Bush for information along the way, especially
Gouky's patch for Bad Dudes & YM3812 information!
Thanks to JC Alexander for fix to Robocop ending!
Thanks to Gouky & Richard Bush for information along the way, especially
Gouky's patch for Bad Dudes & YM3812 information!
Thanks to JC Alexander for fix to Robocop ending!
All games' Dip Switches (except Boulder Dash) have been verified against
All games' Dip Switches (except Boulder Dash) have been verified against
Original Service Manuals and Service Mode (when available).
ToDo:
TODO:
- Fix remaining graphical problems in Automat (bootleg);
- Fix remaining sound problems in Secret Agent (bootleg);
- graphics are completely broken in Secret Agent (bootleg);
- Fighting Fantasy (bootleg) doesn't move on when killing the Lamia, is the MCU involved?
- Hook up the 68705 in Midnight Resistance (bootleg) (it might not be used, leftover from the Fighting Fantasy bootleg on the same PCB?)
- Hook up the 68705 in Midnight Resistance (bootleg) (it might not be used, leftover
from the Fighting Fantasy bootleg on the same PCB?)
- Get rid of ROM patch in Hippodrome;
- background pen in Birdie Try is presumably wrong;
- Unemulated coin counter, manuals mentions it but nowhere to be found, HW triggered?
@ -58,8 +59,6 @@ $09 (set table index to zero). Dragonninja only seems to use commands $03 (on
startup), $07 (same function as Bad Dudes) and $09 (same function as Bad Dudes).
Most of the MCU program isn't utilised.
***************************************************************************
Data East 16 bit games (Updated 19-Feb-2021)
@ -374,11 +373,13 @@ Notes:
#include "cpu/m6502/m6502.h"
#include "cpu/z80/z80.h"
#include "cpu/m6805/m68705.h"
#include "machine/input_merger.h"
#include "machine/mb8421.h"
#include "machine/upd4701.h"
#include "sound/okim6295.h"
#include "sound/ymopn.h"
#include "sound/ymopl.h"
#include "speaker.h"
@ -1828,6 +1829,9 @@ void dec0_state::dec0(machine_config &config)
M6502(config, m_audiocpu, XTAL(12'000'000) / 8);
m_audiocpu->set_addrmap(AS_PROGRAM, &dec0_state::dec0_s_map);
input_merger_device &audio_irq(INPUT_MERGER_ANY_HIGH(config, "audio_irq"));
audio_irq.output_handler().set_inputline(m_audiocpu, 0);
/* video hardware */
MCFG_VIDEO_START_OVERRIDE(dec0_state,dec0)
@ -1841,10 +1845,11 @@ void dec0_state::dec0(machine_config &config)
ym1.add_route(1, "mono", 0.81);
ym1.add_route(2, "mono", 0.81);
ym1.add_route(3, "mono", 0.32);
ym1.irq_handler().set_inputline(m_audiocpu, 0); // Schematics show both ym2203 and ym3812 can trigger IRQ, but Bandit is the only game to program 2203 to do so
// Schematics show both ym2203 and ym3812 can trigger IRQ, but Bandit is the only game to program 2203 to do so
ym1.irq_handler().set("audio_irq", FUNC(input_merger_device::in_w<0>));
ym3812_device &ym2(YM3812(config, "ym2", XTAL(12'000'000) / 4));
ym2.irq_handler().set_inputline(m_audiocpu, 0);
ym2.irq_handler().set("audio_irq", FUNC(input_merger_device::in_w<1>));
ym2.add_route(ALL_OUTPUTS, "mono", 0.72);
okim6295_device &oki(OKIM6295(config, "oki", XTAL(20'000'000) / 2 / 10, okim6295_device::PIN7_HIGH));
@ -4383,7 +4388,6 @@ GAME( 1990, bouldashj, bouldash, slyspy, bouldash, slyspy_state, init_s
GAME( 1988, robocopb, robocop, robocopb, robocop, dec0_state, empty_init, ROT0, "bootleg", "Robocop (World bootleg)", MACHINE_SUPPORTS_SAVE )
GAME( 1988, drgninjab, baddudes, drgninjab, drgninja, dec0_state, init_drgninja, ROT0, "bootleg", "Dragonninja (bootleg)", MACHINE_SUPPORTS_SAVE )
// this is a common bootleg board
GAME( 1989, midresb, midres, midresb, midresb, dec0_state, empty_init, ROT0, "bootleg", "Midnight Resistance (bootleg with 68705)", MACHINE_SUPPORTS_SAVE ) // need to hook up 68705? (probably unused)
GAME( 1989, midresbj, midres, midresbj, midresb, dec0_state, empty_init, ROT0, "bootleg", "Midnight Resistance (Joystick bootleg)", MACHINE_SUPPORTS_SAVE )

3
src/mame/dataeast/dec0_m.cpp
View file

@ -258,11 +258,10 @@ void dec0_state::sprite_mirror_w(offs_t offset, uint16_t data, uint16_t mem_mask
void dec0_state::h6280_decrypt(const char *cputag)
{
int i;
uint8_t *RAM = memregion(cputag)->base();
/* Read each byte, decrypt it */
for (i = 0x00000; i < 0x10000; i++)
for (int i = 0x00000; i < 0x10000; i++)
RAM[i] = (RAM[i] & 0x7e) | ((RAM[i] & 0x1) << 7) | ((RAM[i] & 0x80) >> 7);
}