Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-06-06 04:43:45 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

demote Megaplay to not working, see notes

Browse Source
This commit is contained in:
David Haywood 2017-09-07 01:44:34 +01:00
parent 791e47bb1b
commit bdcf945070
1 changed files with 33 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

76
src/mame/drivers/megaplay.cpp
View File

@ -1,24 +1,21 @@
// license:BSD-3-Clause
// copyright-holders:David Haywood
/* Sega MegaPlay
changelog:
01 Oct 2009 - Converted to use the HazeMD SMS code so that old code
can be removed, however this makes the text transparent,
which IIRC is incorrect
22 Sept 2007 - Started updating this to use the new Megadrive code,
fixing issues with Mazin Wars + Grand Slam.
However I'm still not convinced that the handling of
the Megaplay side of things is correct at all, and
we're still hanging off the old SMS vdp code and
IO code.
*/
/*
Driver is marked as NOT WORKING because interaction between BIOS and 68k side is
not fully understood. The BIOS often doesn't register that a game has been started
and leaves the 'PRESS P1 OR P2 START' message onscreen during gameplay as a result.
If this happens, the games usually then crash when you run out of lives as they end
up in an unknown state.
The BIOS reads the Start inputs in a different way to the 68k side, but even mirroring
the reads so that they happen at the same time doesn't fix the problem 100% of the
time. It's possible all inputs are meant to be read by the BIOS and passed to the 68k
rather than using the regular Genesis PAD hookups. There are a lot of ports not fully
understood that could be involved.
About MegaPlay:
Megaplay games are specially designed Genesis games, produced for arcade use.
@ -41,14 +38,6 @@ Communication between the various CPUs seems to be fairly complex and it is not
understood what is shared, where, and how. One of the BIOS sets doesn't work, maybe for
this reason.
Only a handful of games were released for this system.
Bugs:
Most of this is guesswork and should be verified on real hw. Sometimes after inserting
a coin and pressing start the 'press start' message remains on screen and no credit is
deducted. (timing?)
*/
#include "emu.h"
@ -144,11 +133,12 @@ static INPUT_PORTS_START ( megaplay )
PORT_BIT ( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
/* Caused 01081:
* PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_START1 )
* PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_START2 )
*/
/*
Caused 01081: - but the BIOS TEST menu reads them here, unlike all the other buttons.
Maybe the BIOS port writes should be passing them to the 68k side rather than the 68k side reading directly, might explain the emulation bugs
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_START2 )
*/
PORT_START("DSW0")
PORT_DIPNAME( 0x0f, 0x0f, "Coin slot 1" ) PORT_DIPLOCATION("SW1:1,2,3,4")
@ -962,21 +952,21 @@ didn't have original Sega part numbers it's probably a converted TWC cart
** Probably reused cart case
*/
/* -- */ GAME( 1993, megaplay, 0, megaplay, megaplay, mplay_state, megaplay, ROT0, "Sega", "Mega Play BIOS", MACHINE_IS_BIOS_ROOT )
/* 01 */ GAME( 1993, mp_sonic, megaplay, megaplay, mp_sonic, mplay_state, megaplay, ROT0, "Sega", "Sonic The Hedgehog (Mega Play)" , 0 )
/* 02 */ GAME( 1993, mp_gaxe2, megaplay, megaplay, mp_gaxe2, mplay_state, megaplay, ROT0, "Sega", "Golden Axe II (Mega Play) (Rev B)" , 0 )
/* 02 */ GAME( 1993, mp_gaxe2a,mp_gaxe2, megaplay, mp_gaxe2, mplay_state, megaplay, ROT0, "Sega", "Golden Axe II (Mega Play)" , 0 )
/* 03 */ GAME( 1993, mp_gslam, megaplay, megaplay, mp_gslam, mplay_state, megaplay, ROT0, "Sega", "Grand Slam (Mega Play)",0 )
/* 04 */ GAME( 1993, mp_twcup, megaplay, megaplay, mp_twc, mplay_state, megaplay, ROT0, "Sega", "Tecmo World Cup (Mega Play)" , 0 )
/* 05 */ GAME( 1993, mp_sor2, megaplay, megaplay, mp_sor2, mplay_state, megaplay, ROT0, "Sega", "Streets of Rage II (Mega Play)" , 0 )
/* 06 */ GAME( 1993, mp_bio, megaplay, megaplay, mp_bio, mplay_state, megaplay, ROT0, "Sega", "Bio-hazard Battle (Mega Play)" , 0 )
/* 07 */ GAME( 1993, mp_soni2, megaplay, megaplay, mp_soni2, mplay_state, megaplay, ROT0, "Sega", "Sonic The Hedgehog 2 (Mega Play)" , 0 )
/* 08 */
/* 09 */ GAME( 1993, mp_shnb3, megaplay, megaplay, mp_shnb3, mplay_state, megaplay, ROT0, "Sega", "Shinobi III (Mega Play)" , 0 )
/* 10 */ GAME( 1993, mp_gunhe, megaplay, megaplay, mp_gunhe, mplay_state, megaplay, ROT0, "Sega", "Gunstar Heroes (Mega Play)" , 0 )
/* 11 */ GAME( 1993, mp_mazin, megaplay, megaplay, mp_mazin, mplay_state, megaplay, ROT0, "Sega", "Mazin Wars / Mazin Saga (Mega Play)",0 )
/* -- */ GAME( 1993, megaplay, 0, megaplay, megaplay, mplay_state, megaplay, ROT0, "Sega", "Mega Play BIOS", MACHINE_IS_BIOS_ROOT | MACHINE_NOT_WORKING )
/* 01 */ GAME( 1993, mp_sonic, megaplay, megaplay, mp_sonic, mplay_state, megaplay, ROT0, "Sega", "Sonic The Hedgehog (Mega Play)", MACHINE_NOT_WORKING )
/* 02 */ GAME( 1993, mp_gaxe2, megaplay, megaplay, mp_gaxe2, mplay_state, megaplay, ROT0, "Sega", "Golden Axe II (Mega Play) (Rev B)", MACHINE_NOT_WORKING )
/* 02 */ GAME( 1993, mp_gaxe2a,mp_gaxe2, megaplay, mp_gaxe2, mplay_state, megaplay, ROT0, "Sega", "Golden Axe II (Mega Play)", MACHINE_NOT_WORKING )
/* 03 */ GAME( 1993, mp_gslam, megaplay, megaplay, mp_gslam, mplay_state, megaplay, ROT0, "Sega", "Grand Slam (Mega Play)", MACHINE_NOT_WORKING )
/* 04 */ GAME( 1993, mp_twcup, megaplay, megaplay, mp_twc, mplay_state, megaplay, ROT0, "Sega", "Tecmo World Cup (Mega Play)", MACHINE_NOT_WORKING )
/* 05 */ GAME( 1993, mp_sor2, megaplay, megaplay, mp_sor2, mplay_state, megaplay, ROT0, "Sega", "Streets of Rage II (Mega Play)", MACHINE_NOT_WORKING )
/* 06 */ GAME( 1993, mp_bio, megaplay, megaplay, mp_bio, mplay_state, megaplay, ROT0, "Sega", "Bio-hazard Battle (Mega Play)", MACHINE_NOT_WORKING )
/* 07 */ GAME( 1993, mp_soni2, megaplay, megaplay, mp_soni2, mplay_state, megaplay, ROT0, "Sega", "Sonic The Hedgehog 2 (Mega Play)", MACHINE_NOT_WORKING )
/* 08 - Columns 3? see below */
/* 09 */ GAME( 1993, mp_shnb3, megaplay, megaplay, mp_shnb3, mplay_state, megaplay, ROT0, "Sega", "Shinobi III (Mega Play)", MACHINE_NOT_WORKING )
/* 10 */ GAME( 1993, mp_gunhe, megaplay, megaplay, mp_gunhe, mplay_state, megaplay, ROT0, "Sega", "Gunstar Heroes (Mega Play)", MACHINE_NOT_WORKING )
/* 11 */ GAME( 1993, mp_mazin, megaplay, megaplay, mp_mazin, mplay_state, megaplay, ROT0, "Sega", "Mazin Wars / Mazin Saga (Mega Play)", MACHINE_NOT_WORKING )
/* ?? */ GAME( 1993, mp_col3, megaplay, megaplay, megaplay, mplay_state, megaplay, ROT0, "Sega", "Columns III (Mega Play)" , 0 )
/* ?? */ GAME( 1993, mp_col3, megaplay, megaplay, megaplay, mplay_state, megaplay, ROT0, "Sega", "Columns III (Mega Play)", MACHINE_NOT_WORKING )
/* Not confirmed to exist: