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- Path: mail2news.demon.co.uk!gate.demon.co.uk
- From: Jason <tmr@cosine.demon.co.uk>
- Newsgroups: comp.sys.cbm
- Subject: Re: NTSC vs PAL questions...
- Date: Thu, 11 Apr 96 23:12:46 GMT
- Organization: Cosine Systems
- Message-ID: <9604112312.AA001dd@cosine.demon.co.uk>
- References: <4kd7v5$r7e@calvino.alaska.net> <316B7B36.6E6C@esbjehs.dk> <316BAF26.1B9E@ludat.lth.se> <316CA3B3.7173@esbjehs.dk>
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-
- Ejner (d6kn@esbjehs.dk) wrote:
-
- : In addition: The fewer screen updates on the PAL machines gives the
- : machines more time before the next screen update (more rastertime), which
- : can be used for even more or heavier calculations each frame...
-
- Weeeelll, not exactly. There's the same amount of time each frame (a few
- cycles difference I believe) so you should be able to do most
- calculations in about the same space.
-
- : If anyone knows which rasterlines available on PAL machines are NOT
- : available on NTCSs, please share your knowledge!... Is this the only
- : difference you have to consider when NTCS-fixing?
-
- The raster MSB (everything after line $FF) is not present. This is not
- the only difference. If memory serves, line $00 is off the bottom of the
- screen with about $10 lines, then the rest up to $32 are at the top. There
- is one cycle more per line to help balance out the difference and any
- product using the upper and lower borders is going to be a nasty one to do!
-
- Jason =-)
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