I would have put this in the graphics section, because it is technically graphics, but I decided not to, because it is coding, not sprites.

So here's what I need.  I need 22 different routines that will animate the tetris background. The 2 areas that need animation are the far left column, which is Plotsscreen, and each byte below it (pixel columns -7), and the other, larger column, Plotsscreen +7, and Plotsscreen +8, and the bytes below it, (pixel columns 56-71), the only requirements are that the routine be under 5000 t-states, and not use any RAM other than plotsscreen (that means no adding sprites, you have to make it mess with what's already there [look at the screenshot in the other thread]).  You should post your entries here with the code, followed by how you want your name in the credits, and a screenshot of it in action.  This is not a competition, since I don't expect I will get more than 23 entries, it is just a way for you to get easy credits .

EDIT: sorry if I kinda ruled basic programmers out on this, but it is an ASM project, I had no choice.

Here's a sample, the code that makes it spiral:
c1-->

CODE

ec1 bg_0:    ld hl,plotsscreen    ld de,12    ld b,64 bg_loop_1:    rlc (hl)    add hl,de    djnz bg_loop_1    ld hl,plotsscreen+7    ld de,11    ld b,64 bg_loop_2:    rrc (hl)    inc hl    rrc (hl)    add hl,de    djnz bg_loop_2    ret c2

If I design a background and show how it would work with in theory can you use it (I don't speak asm).