[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: PAL Colour Card

Subject: Re: PAL Colour Card
From: Patrick Schaefer <patrick.schaefer@topmail.de>
Date: 2000/08/24
Newsgroups: comp.sys.apple2
Organization: Forschungszentrum Juelich GmbH
References: <8nnd4b$4qf$1@nnrp1.deja.com> <39A0EF63.E0ADDC8D@topmail.de> <39a1b71e$1@news.uow.edu.au> <39A23A38.2DAA4BBC@topmail.de> <39a341d0$1@news.uow.edu.au>

David Wilson schrieb:

> I think that is 14.25MHz. One line on the Apple 2 is 65 x 14/Clk + 2/Clk
> whitch for NTSC works out at 63.5us + .139us = 63.64. For a 14.25MHz clock
> this works out at 63.86us + .140us = 64us. 14.025 works out as 64.88+0.142
> or 65.02us. When I looked at my PAL //e I found that the crystal is not
> marked with a frequency.

Your memory ist better than mine :-)
It is 14.250450 MHz. 64ï¿½s gives the correct line length for (at least
the European) PAL.


Patrick

Follow-Ups:
- Re: PAL Colour Card
  - From: pausch@saafNOSPAM.se (Paul Schlyter)

References:
- PAL Colour Card
  - From: Dave Morrison <deth@idx.com.au>
- Re: PAL Colour Card
  - From: Patrick Schaefer <patrick.schaefer@topmail.de>
- Re: PAL Colour Card
  - From: david@uow.edu.au (David Wilson)
- Re: PAL Colour Card
  - From: Patrick Schaefer <patrick.schaefer@topmail.de>
- Re: PAL Colour Card
  - From: david@uow.edu.au (David Wilson)

Prev by Date: Glen's Birthday Message
Next by Date: ANN: Time in a Bottle CD-ROM
Previous by thread: Re: PAL Colour Card
Next by thread: Re: PAL Colour Card
Index(es):
- Date
- Thread