Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!ira.uka.de!fauern!NewsServ!vollath From: vollath@Informatik.TU-Muenchen.DE (Ulrich Vollath) Newsgroups: comp.sys.amiga.programmer Subject: Re: VPOSR/VHPOSR custom register values (which do they take) Message-ID: <1991Jun20.063950.20268@Informatik.TU-Muenchen.DE> Date: 20 Jun 91 06:39:50 GMT References: <1991Jun18.120731.13523@odin.diku.dk> <91170.042954DXB132@psuvm.psu.edu> Sender: news@Informatik.TU-Muenchen.DE Organization: Technische Universitaet Muenchen, Germany Lines: 21 Originator: vollath@suneickel2.informatik.tu-muenchen.de In article <91170.042954DXB132@psuvm.psu.edu>, writes: |> In article <1991Jun18.120731.13523@odin.diku.dk>, thomas@diku.dk (Thomas |> Nikolajsen) says: |> [.......] |> >Which is the correct way to distinguish between PAL/NTSC machines (mode)? |> >Is it PowerSupplyFrequency(SysBase) or VBlankFrequency(SysBase) or ..? |> |> For testing whether to use 227 or 227.5, use VBlankFreq. For determining |> the base frequency, test PowerSupplyFreq. (At least I think this will |> work best...it's really just a guess!) ^^^^^^^^^^^^^^^^ Does this work in any case ? I own an US A1000 with a 110V/220V tranformer, so it runs at 50 hz Power supply, but with 60 hz NTSC video. Is this taken into account by PowerSupplyFreq? Ulrich Vollath -- Ulrich Vollath email: vollath@lan.informatik.tu-muenchen.de Munich Institute of Technology voice: 004989/2105-8102 (result: -8099.62992874)