Backport Shooting Master "working" clone (Sega system1.c) from MAME 2010

[KMFDManic]

I know we are pulling hairs at time trying to find additional games to add to 2003. But, I feel, at a quick glance...we should be able to backport Shooting Master working clone, unless I am missing some other related dependencies that came along after 2003 coding infrastructure. I am gonna play around with an attempt at it with 2003 Xtreme, if none of you get to it first:)

2010

https://github.com/libretro/mame2010-libretro/blob/master/src/mame/drivers/system1.c

I gave this game a go and it actually is a pretty nifty gem that I wasn't aware of before. Note: it is a light gun game. But, seems to play nicely enough:)

[mahoneyt944]

It would seem that later mame deemed this as identical to the parent and removed it. So I'm guessing it's not actually a clone? Looks like Redumped & verified Shooting Master's EPR-7100 fixes the parent set

mamedev/mame@6172111

[KMFDManic]

@mahoneyt944 Thanks for the verification and feedback on this. I am giving it a test run. It is an interesting "escort" style of light gun shooter...where you have to prevent a female from being taken captive. I dont see any reason why it wont work on 2003:) At least, hopeful.

[arcadez2003]

Im sure this needs a CPU we dont have I8051 maybe i cant mind

[KMFDManic]

@arcadez2003 Thanks for chiming in:) I was already taking a stab at adding it to at least see if it would boot for me. With what you just informed me of, at least I know in advance, hehe.

[arcadez2003]

Well let's not be too hasty although the game is meant to use an I8751 mcu it seems when it first
becomes playable in MAME 108.u4 it's not using it and there are some hacks/workarounds in the
driver.

You might be able to get this to work but i see a MACHINE_INIT banked call we dont have
but other games that use it are supported here eg noboranka bootleg so it might not be an issue
you'd need to see if it boots with the standard system1 machine_init call after adding the code
changes from this commit.......
https://github.com/mamedev/historic-mame/blob/59e1dc7770c51a7fcedef555b30bd9e6218d1a68/src/drivers/system1.c

However this might be an issue as i've never seen this in a read mem map before..

AM_RANGE(0xc000, 0xffff) AM_READ(MRA8_RAM) AM_BASE(&system1_ram)

AM_BASE(&system1_ram) i've only ever seen the above in a write mem map so i guessing our
ole core will not support that.

[mahoneyt944]

Already working on this, the game is working, but still needs the sprites, inputs, and before mentioned 7100 update. Should have something soon.

master...mcu

[arcadez2003]

Already working on this, the game is working, but still needs the sprites, inputs, and before mentioned 7100 update. Should have something soon.

master...mcu

Good on ya :)

The fact it boots is always a good sign i take it your just using the standard system1 machine call.??
the video changes and the inputs should touch wood not present too much of a hurdle.

[mahoneyt944]

Yeah, just patched in the hack to see what it would do. The hack piggybacks the port used for the gun so we'd likely need to hook up the gun and trampoline the hack. All very doable assuming the hack is adequate to play the entire game.

[arcadez2003]

Alright some bad news while you were doin that i've checked the MAME WIP for that sprite fix
hoping to find a smallish commit via Aaron but all there seems to be is a massive video rewrite :(

However i might just have missed it let's hope so ha ha.

[KMFDManic]

Awesome work guys:) Just nice being able to find games that may potentially be incorporated into our favorite MAME scheme of things!

[grant2258]

your going to need that banking for sure at least not sure if the video update is required the banking is easy enough though nothing complicated about it.

[mahoneyt944]

My branch is live with the WIP if you want to try to add the banking. Haven't got to test the added crosshairs yet. At work at the moment.

[grant2258]

toothache im just getting ready for work. Its freezing this morning. I started some code on the zn driver to look at raystorm earlier this week and that has some funky banking going on this will be a nice distraction from dealing with level of banking madness. I dont think them mirrors make sense though. I think ill look at later code see if i can simplify it , looks like some mirrors are doubled up addresses could just be the way im reading it though.

[grant2258]

@mahoneyt944 the banking is fine it can be changed to a 1 liner though but thats being picky wont change the functionality. The system1_ram pointer is fine as well. you should also explicitly set the bank1 on machine reset to CPU1 region 0x1000. the problem lies elsewhere. I think the bank reset would need to go in driver_init rather than machine_init as I think only driver init gets a call when reset I would need to double check though.

edit could be related to this.

mamedev/mame@f306b35 again our code differs

[mahoneyt944]

Not sure, I might just push my branch WIP and move on for now. Can't seem to get anymore progress at the moment.