> On Wed, 9 Aug 1995 11:55:25 +0200, Frode Tenneboe said: > > 224 T-states per scan line > > Thanks (as long as you're sure :-) ). On the +3 it is 228, which is why I > asked.
I'm sure. It's 228 on all 128K models (I'm a bit unsure about the original Sinclair 128K, though). However, there is also a difference between the +2 and the +2A/+3 being that one is 'in synch' on the first cycle of a four cycle cycle, while the other is on the second. > > > 312.5 scanlines per frame. > > No thanks. :-) > The answer has to be an integer, and is not necessarily exactly the same as > the PAL standard. For example, the +3 has 311. For all practical purposes, I used 312,5 - I never tried to synch the screen without using HALT anyway. And for the +3, 312,5 gives a nice frequency of 3,5625 MHz.... > > This information should be written in the reference section in the speccy > manual (because it is relevant to the contended memory). It is? > > imc >
