Does Workbench have a maximum resolution?

[Ral-Clan]

Hi, I just bought new flat panel monitor to use with my WinUAE emulated Amiga.  RTG mode.  Picasso96.

The highest resolution I can select is 1920x1080 16-bit., which is my monitor's native resolution.  But I'd like to choose a 32-bit mode.  All other (lower) resolutions have a 32 bit mode, but 1920x1080 only has the 16 bit mode.

I'm using the UAE Picasso graphics device (uaegfx.card) that comes with UAE.

I'm guessing that I can somehow create new modes in Picasso96....but this always seems like a frightening prospect (burning out a monitor).

[Heiroglyph]

I'm guessing that you didn't assign enough RAM to your emulated video card.

You shouldn't have to go making modes, I'm not sure how that even works out, I've never had to do it.

[Piru]

this always seems like a frightening prospect (burning out a monitor).

You can't break anything, especially not with UAE

[bubblebobble]

I run WinUAE at 1920x1200x32. Works fine. Just give enough VRAM. I use 64MB, but 128MB cant hurt either. You find the settings on the "expansion" page in the latest WinUAE.

[pyrre]

Hi, I just bought new flat panel monitor to use with my WinUAE emulated Amiga.  RTG mode.  Picasso96.

The highest resolution I can select is 1920x1080 16-bit., which is my monitor's native resolution.  But I'd like to choose a 32-bit mode.  All other (lower) resolutions have a 32 bit mode, but 1920x1080 only has the 16 bit mode.

I'm using the UAE Picasso graphics device (uaegfx.card) that comes with UAE.

I'm guessing that I can somehow create new modes in Picasso96....but this always seems like a frightening prospect (burning out a monitor).

I have ran UAE with 2048X1536 on my old nokia 21" CRT screen.
Worked like a charm..

[Karlos]

The workbench screen is just like any other public screen. The size and resolution is determined by the hardware, up to the limits imposed by the structures used in graphics/intuition. Unless I'm mistaken, the following structures all use signed 16-bit words for width and height (there are some places where unsigned are used): ViewPort, BitMap, Window, Screen...

Without any hardware limitations, those would restrict the maximum width and height to 32768 pixels. Which is big enough, really.

[Thomas]

I'm guessing that I can somehow create new modes in Picasso96....but this always seems like a frightening prospect (burning out a monitor).

You cannot create new modes in UAE. UAE automatically offers all modes in Screenmode prefs which are available to the host OS.

The highest resolution I can select is 1920x1080 16-bit., which is my monitor's native resolution.  But I'd like to choose a 32-bit mode.  All other (lower) resolutions have a 32 bit mode, but 1920x1080 only has the 16 bit mode.

Does Windows run this mode in 32bit?

Did you set enough RTG memory in UAE? 1920x1080x16 needs ~32 MB only for one screen, x32 needs twice as much.

[Zac67]

Did you set enough RTG memory in UAE? 1920x1080x16 needs ~32 MB only for one screen, x32 needs twice as much.

Huh? 1920x1080x16 is just 4 MB...

[Thomas]

You are right. I must have entered rubbish into the calculator. Or the calculator made rubbish of what I entered, it's Windows after all ;-)

Nevertheless the question is still valid. If there is less than 8MB RTG memory, the 32bit resolution will not fit in.

[kedawa]

I think the max is 16384x16384.

[Karlos]

I think the max is 16384x16384.

On my machine, that only appears for native modes. When using an RTG mode on my BVision, for example, the maximum is reported as 2048x2048, which just happens to be the maximum surface size supported by the Permedia2.

[Ral-Clan]

Thanks guys, I set the RTG RAM in WinUAE to 16MB and the 32-bit mode 1920x1080 showed up.

[ElPolloDiabl]

Doesn't the RAMDAC speed set the maximum resolution, or was that only for CRTs?

[Zac67]

The RAMDAC limits the maximum output quality nothing else.
(e.g. for 1920x1080 @ 60 Hz ~ 135 MHz pixel clock you'd need at least 270 MHz RAMDAC for a somewhat decent display)

A bit more exact: The RAM part of the RAMDAC limits the maximum pixel clock in palettized modes - this usually isn't a problem -, but for hicolor or truecolor modes it's just the DAC part that matters.