Re: Interlaced video

2008-05-25 Thread Dave Laundon
2008/5/26 Colin Piggot <[EMAIL PROTECTED]>: > On a SAM RGB Scart cable the composite video output from the SAM (pin 19) is > not connected. At the TV end, Pin 19 connects to Pin 16 via a 470ohm > resistor - the diagram in the SAM manual of a RGB Scart lead just has a wire > link between 16 and 19 b

Re: Interlaced video

2008-05-25 Thread Colin Piggot
Dave wrote: > Here's Simon's vision finally realised 18 years on :-) > http://myweb.tiscali.co.uk/dlaundon/mode3+3a.jpg Oooh, nice! > On a previous > TV (years ago) it seemed like the composite signal and RGB signals > were interfering with each other (and one seemed to be offset from the > othe

Re: Interlaced video

2008-05-25 Thread Dave Laundon
2008/5/23 Frode Tenneboe <[EMAIL PROTECTED]>: > ftp://ftp.worldofspectrum.org/pub/sinclair/magazines/SinclairUser/Issue099/Tape/SUIssue99-Megatape27.tzx.zip > > ..or more easily accessible: > > ftp://ftp.nvg.ntnu.no/pub/sam-coupe/disks/demos/SimonGoodwin-512x384Interlace.zip Thanks Frode. Brings

Re: Interlaced video

2008-05-24 Thread Colin Piggot
Thomas wrote: > There's a timing difference between even frames and odd fields in the > syncs generated at the field end. Non-interlaced video essentially > sends only even fields. Was about to say the same thing. The standard 625 line frame (consisting of one odd and one even field) has several s

Re: Interlaced video

2008-05-24 Thread Thomas Harte
] On Behalf Of Dave Laundon Sent: 22 May 2008 20:56 To: sam-users@nvg.ntnu.no Subject: Re: Interlaced video 2008/5/22 Colin Piggot <[EMAIL PROTECTED]>: Now the question is, depending how the TV is interlacing the frames, and how many frames there's been since the SAM was powered

RE: Interlaced video

2008-05-24 Thread Tobermory
reset it? Howard -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Laundon Sent: 22 May 2008 20:56 To: sam-users@nvg.ntnu.no Subject: Re: Interlaced video 2008/5/22 Colin Piggot <[EMAIL PROTECTED]>: > Now the question is, depending how the TV i

Re: Interlaced video

2008-05-23 Thread Frode Tenneboe
On Thu, 2008-05-22 at 23:43 +0100, Dave Laundon wrote: > 2008/5/22 Colin Piggot <[EMAIL PROTECTED]>: > > Yes, it was Simon Goodwin's routine on a Crash cover tape in 1990 or so. On > > the frame interrupt it toggled between two screens with different palettes, > > which looked absolutely horrid th

Re: Interlaced video

2008-05-22 Thread Colin Piggot
James wrote: > Wasn't it Sinclair User? Oops! Yes, you're quite right. It was Sinclair User - issue 99. Colin = Quazar : Hardware, Software, Spares and Repairs for the SAM Coupe 1995-2008 - Celebrating 14 Years of developing for the SAM Coupe Website: http://www.samcoupe.com/

Re: Interlaced video

2008-05-22 Thread James R Curry
> > Yes, it was Simon Goodwin's routine on a Crash cover tape in 1990 or so. On > > the frame interrupt it toggled between two screens with different palettes, > > which looked absolutely horrid though on the TV's I'd tried it on. Other > > routines in the issue did MODE 3 interlacing - flicki

Re: Interlaced video

2008-05-22 Thread Dave Laundon
2008/5/22 Colin Piggot <[EMAIL PROTECTED]>: > Yes, it was Simon Goodwin's routine on a Crash cover tape in 1990 or so. On > the frame interrupt it toggled between two screens with different palettes, > which looked absolutely horrid though on the TV's I'd tried it on. Other > routines in the issue

Re: Interlaced video

2008-05-22 Thread Colin Piggot
Dave wrote: > I seem to remember there was a cover tape on one of the magazines that > had a "new display mode" that swapped between two screens at 50Hz or > something. Can't remember if it was "interlacing" or some method of > increasing colours. My memory is vague... Yes, it was Simon Goodwin'

Re: Interlaced video

2008-05-22 Thread Dave Laundon
2008/5/22 Colin Piggot <[EMAIL PROTECTED]>: > Now the question is, depending how the TV is interlacing the frames, and how > many frames there's been since the SAM was powered up - when the 'Interlaced > Pictures' from FRED are loaded the frames might show with the intended > 'interlacing', or be r

Re: Interlaced video

2008-05-22 Thread Colin Piggot
Dave wrote: > Anyway, it seems my TV doesn't realise the signal is not interlaced! Hmmm... sounds an interesting telly! The "comb effect" definitely shows it's interlacing. I've not come across a telly that will automatically interlace non-interlaced video before - although I have seen one that re