Al Feng wrote: > Essentially, when you swap QL ROMs, the video output for "TV" mode > changes from NTSC to PAL and vice-versa for JSU & JS, respectively. >
Errm...don't the ROMs contain the CPU instructions...the video output is shurely the job of other board chips (ZX8301, etc). However, (these are speculation/vague memories [of rumours?]) the screen shape is different(?) and so the drawing routines would be modified (so a CIRCLE is still a circle). Also, would the interrupt routine be running at 60Hz as opposed to 50Hz, and so some timing routines would have been rewritten? > Al > > > On Wed, 1 May 2002 04:50:15 +0000 (GMT) Dave <[EMAIL PROTECTED]> > writes: > >>Hi all, >> >>What do you think would happen if you put JS ROMs in a US spec QL? >>Or JSU >>ROMs in a UK spec QL? >> >>Dave
