On Tue, Jan 07, 2003 at 11:37:59PM -0000, f-k-nose wrote: > ----- Original Message ----- > From: "Stuart Brady" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Tuesday, January 07, 2003 11:32 PM > Subject: Re: So long 2002, here comes 2003.... > > > Finishing unfinished SAM projects? ahahaha... I've a few of those to do. > > > > I've a few of those to start, since I never really did much on the Sam. > > I can write some simple z80 code that seems to work, but it seems to > > take me ages to get anywhere. > > I got a scroller working once.
Ooh, what sort of font? Flat scrolling, or did it move around? :) I haven't written one yet... I imagine that it'd be good practice, and maybe I could learn something in the process. Does this sound like a sensible approach for pixel-by-pixel scrolling? : Store two 256-byte buffers for each line. 128 bytes from an offset (initially starting at 0) into the first buffer for each line would be copied onto the screen, followed by a pause, and then the same for the second buffer which scrolls everything by one pixel. At that point, new bytes are written into the buffers at this offset, and at offset+128. The offset is then incremented, and if it reaches 128, it is reset to 0. I suppose changing the video page between scanlines would work? I know that you can change the video mode, but I think I've only ever seen this in Dave Laundon's Fred 69 menu. :) -- Stuart Brady
