 No.17112
Fujix Administrator
Oct 22, 2019, 05:01
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When selecting "3P Simultaneos" with "Coin counter type: Individual", MAME is missing the coin input for the player 3, we have to use the service input and then press "Right Ctrl" to start the 3rd player. And when the Coin counter type is set to "One", the 7 key for "Coin 3" doesn't work, but the 3 key inserts coins. To start the game, P1 is P1 Button 1, P2 is P2 Button 1 and P3 is P3 Button 1 respectively. Looks like OK to me. |
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 No.17116
MetalGod Senior Tester
Oct 22, 2019, 09:59
edited on: Oct 22, 2019, 10:09
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Coin input for player 3 is set to key "3". It should be key "7" It is not OK. Start button is OK cause is set to each players button1 Coin3 is not OK *Issue edited |
 No.17118
Haze Senior Tester
Oct 22, 2019, 14:52
edited on: Oct 22, 2019, 14:55
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This is because MAME emulates one specific cabinet type. Once you change that in service, how the board is wired up is expected to be changed too, which means the input that WAS player 3 start on the PCB is now Coin 3. MAME doesn't actually map a Coin 3 for this at all as it doesn't exist in the default cabinet setup, you're literally using what it thinks is P3 start to add a coin because it's the same physical line on the PCB. Unless MAME supports an extra level of abstraction for cabinet types this is going to occur in a lot of drivers. You could add a fake 'config switch' and conditional ports rather than a true level of abstraction, but it can get messy quickly. Even then there's no way for it to be automatic based on service mode, as you're expected to use it in a physically different cabinet with different wiring. |
 No.17125
Heihachi_73 Tester
Oct 23, 2019, 04:16
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I don't think MAME is advanced enough to the point that it could automatically generate and map the correct buttons by reading the game's DIP switches or even the NVRAM, although even that could be technically possible if someone could be bothered writing obscure code like that (and of course, with sanity checks in place to make sure that garbage values revert to the default layout rather than crashing MAME). Technically it's already possible to change the buttons in the menu using PORT_CONDITION in the driver code but it's a PITA and users would still have to manually set the desired button/cabinet layout in the Machine Configuration menu. Basically what Haze was saying about config switches and conditional ports. |
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No.17135
Haze Senior Tester
Oct 24, 2019, 18:00
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you can do it with the dipswitches (conditional inputs) but trying to do it automatically based on values extracted from NVRAM for games that use NVRAM instead of dips would be a hack. |