questions about dual monitor devices

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questions about dual monitor devices #121979 02/16/23 07:52 PM
Joined: May 2008 Posts: 60 Likes: 4 Bremen W Walker OP Member
OP Walker Member W Joined: May 2008 Posts: 60 Likes: 4 Bremen	To be precise, my current example is the commodore 128 (128d). This machine has two outputs, one for 40 columns screens (usually send to tv with tv modulator hardware or to monitors like commodore 1084) and 80 coulumn mode which was send to a cga monitor compatible output (if i remember correctly). So in Mame if you start the machine with an uninitialised nvram dir, you get a dual screen output, 80 column screen to the left and 40 column screen to the right. Now to my question - is there a command line switch where I can disable the 80 column output port? I can switch in 128 40/80 column mode with F11 (commodore 128 device default mapping) key to 40 columns and reset the machine so that the left screen is disabled, but mame is of course keeping the left part drawn even if it is empty due to being unused in 40 column mode. Plus is there a way to read out by command line parameters how to enable / disable additional screens (for any devices that might support a multimonitor output) or any othe possible option available for devices? Like the list of compatible hardware devices for others like hdd controllers etc I am currently digging through the source to find this out, but maybe one of you has a quicker answer? some half answers I researched until now (but not yet at the point i want to reach): mame c128dp -listdevices which lists the screens and all other devices: Code Driver c128dp (Commodore 128D (PAL)): <root> Commodore 128D (PAL) cart_list Software List cart_list_c64 Software List cart_list_vic10 Software List cass_list_c64 Software List exp C64 expansion port @ 985.24 kHz flop_list Software List flop_list_c64_misc Software List flop_list_c64_orig Software List from Generic ROM Socket / RAM Socket from_list Software List gfxdecode gfxdecode iec10 CBM IEC slot iec11 CBM IEC slot iec4 CBM IEC slot iec8 CBM IEC slot c1571 Commodore 1571 Disk Drive u1 MOS Technology 6502 @ 1.00 MHz u11 Western Digital WD1770 FDC @ 8.00 MHz u20 MOS 6526 CIA @ 1.00 MHz u4 MOS 6522 VIA @ 1.00 MHz u6 Commodore 64H156 @ 16.00 MHz 0 Floppy drive connector abstraction 525qd 5.25" quad density floppy drive floppysound Floppy sound @ 44.10 kHz flopsndout Speaker u9 MOS 6522 VIA @ 1.00 MHz iec9 CBM IEC slot iec_bus CBM IEC bus irq Input Merger (any high) joy1 Atari VCS controller port joy2 Atari VCS controller port joy Atari / CBM Digital joystick nmi Input Merger (any high) quickload Quickload ram RAM screen Video Screen screen80 Video Screen speaker Speaker tape Commodore Datasette Port c1530 Commodore 1530 Datassette cassette Cassette u1 MOS 6526 CIA @ 985.24 kHz u10 Zilog Z80 @ 3.94 MHz u11 MOS 8721 PLA u21 MOS 8566 VIC-II @ 7.88 MHz u22 MOS 8563 VDC @ 16.00 MHz u4 MOS 6526 CIA @ 985.24 kHz u5 MOS 6581 SID @ 985.24 kHz u6 MOS Technology 8502 @ 985.24 kHz u7 MOS 8722 MMU @ 985.24 kHz user PET user port and then i tried mame c128p -view screen which at least boots up the machine with a single screen, but instead of showing the 40 column screen it is always showing the 80 column screen which in my opinion should have been screen80 (even switching between the modes with the F11 (40/80 column switch key) did not change this) i am probably still missing something - is it even possible to do what i want? (boot c128d only in 40 column mode) Last edited by Walker; 02/16/23 11:46 PM. Reason: added some research results, but still need some sort of help

Re: questions about dual monitor devices Walker #121981 02/17/23 03:12 AM
Joined: May 2004 Posts: 974 Likes: 49 Germany D Duke Senior Member
Duke Senior Member D Joined: May 2004 Posts: 974 Likes: 49 Germany	You can see the different -view options in the tab menu. To achieve what you want you can do: Code mame c128dp -view "Screen 0 Standard" and Code mame c128dp -view "Screen 1 Standard"
	1 member likes this: sairuk

Re: questions about dual monitor devices Walker #121982 02/17/23 07:37 AM
Joined: May 2008 Posts: 60 Likes: 4 Bremen W Walker OP Member
OP Walker Member W Joined: May 2008 Posts: 60 Likes: 4 Bremen	Wow, fantastic! Thanks Duke, I was obviously nearby but your information is the missing cherry on the top to make it work! Thanks! I was asking this because I am currently building up the mamedev wiki page for the c128(d*), so if anyone is interested look into the page and correct me if you feel i am totally wrong c128d Device Wiki Page Last edited by Walker; 02/17/23 07:42 AM.

Re: questions about dual monitor devices Walker #121984 02/17/23 02:43 PM
Joined: Aug 2009 Posts: 1,180 Likes: 59 Naples, Italy Kale Very Senior Member
Kale Very Senior Member Joined: Aug 2009 Posts: 1,180 Likes: 59 Naples, Italy	Two things yeah: 1. imho a wiki page should be more neutral, and title isn't. And tbh all machines are interesting 2. Mamed is a typo, I'm also pretty sure it's always MAME (all caps)

Re: questions about dual monitor devices Walker #121985 02/17/23 04:40 PM
Joined: May 2008 Posts: 60 Likes: 4 Bremen W Walker OP Member
OP Walker Member W Joined: May 2008 Posts: 60 Likes: 4 Bremen	both valid points, will change that (I am pretty sure I got a lot more typos, good thing that it is not printed on stone tablets ) edit changes applied Last edited by Walker; 02/17/23 04:51 PM.

Re: questions about dual monitor devices Walker #121991 02/17/23 11:58 PM
Joined: Nov 2004 Posts: 13 Likes: 3 AU S sairuk Member
sairuk Member S Joined: Nov 2004 Posts: 13 Likes: 3 AU	i learnt about -view today, so not a total waste Some thoughts as i read through the article: - I agree it needs a more neutral tone - Consider taking out the general UI keys to their own page (or link to the related docs) that can be referenced in other articles without duplication and just highlight the system specific keys - 'pal' should be PAL (all caps)? - menttion is a typo, two t's - does the wiki need/support citations for things like "I should menttion that the most common configuration the owners started with in the 80's was"? - if you're doing a compatibility listing it might be better to have "Software \| Tested Version \| Status" table instead of a dedicated version 0.251 section ultimately that info should probably be in the softlist and the UI updated to display the state on highlight for the machine but that would be a nightmare to manage. - iscurrently needs a space - in the note under "Confirmed not working" section you don't need to bold 'can' nor capitalise 'BUT' in my opinion also what kind of artifacts? i assume visual? - everyhing is a typo, needs a t

Re: questions about dual monitor devices

Walker #121992 02/18/23 03:23 AM

Joined: Feb 2014

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Golden Child Offline

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Golden Child

Senior Member

Joined: Feb 2014

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Likes: 75

You can change the view while mame is running from the Video Options menu.

You can also have multiple screens/windows with -numscreens 2 (this would give you 2 screens).

It can even be done from the lua console:

Code

[MAME]> function printt(t) for i,j in pairs(t) do print(i,j) end end
[MAME]> printt(manager.machine.render.targets)              
1	sol.render_target*: 0x56480b90a428    (corresponds to Screen 0)
2	sol.render_target*: 0x56480b90a468    (corresponds to Screen 1)
3	sol.render_target*: 0x56480b90a4a8    (corresponds to snapshot screen)
[MAME]> 
[MAME]> print(manager.machine.render.targets[1].view_names)
sol.::render_target_view_names: 0x56480c472d48
[MAME]> printt(manager.machine.render.targets[1].view_names)
1	Screen 0 Standard (4:3)
2	Screen 1 Standard (4:3)
3	Screen 0 Pixel Aspect (16:5)
4	Screen 1 Pixel Aspect (418:235)
5	Left-to-Right
6	Left-to-Right (Gapless)
7	Top-to-Bottom
8	Top-to-Bottom (Gapless)
9	Cocktail
[MAME]> manager.machine.render.targets[1].view_index = 7

Re: questions about dual monitor devices Walker #121994 02/19/23 06:32 PM
Joined: May 2008 Posts: 60 Likes: 4 Bremen W Walker OP Member
OP Walker Member W Joined: May 2008 Posts: 60 Likes: 4 Bremen	All good points, but it will take a while until I adjusted the page to all suggestions (I am slow). About the typos, they are not intended and I try to sorrect the stuff whenever I see it (If you see one, don't hesitate to correct it yourself, I won't feel offended I promise). Having a generic Page for MAME keyboard layout makes sense to me, but mind that there are special keys like in the case for the c128, where you need to know which key is the C= key if you want to trigger the C64 mode. This is why I prefer to have a small table to remind people new to MAME when reading that page about how MAME behaves (UI Mode especially is something that breaks many peoples minds since they cannot easily see how to stop the emulation - once you got the idea about UI Mode on/off it is easy of course). I try to write the pages with those in mind who use MAME for the very first time since they found out that it is emulating (maybe the only existing emulator for it) their favorite system. This leads to redundancy, so I try to keep the keyboard layout table as small as possible. I already tried to neutralise the tone quite a bit, but if you find something more that I should neuter, I am happy if you point it out to me. And yes, the c64 part on the c128 device has a lot of visual artifacts in a lot of games / demos, the main problem I personally have right now with it is the tape emulation being broken.

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