arrays vs tables

[stan cartwright]

I tried reading tables against reading an array and doesn't seem much difference.. except for ram.
I tried this where it reads the table which turned out to be word vals and it takes 512B for 16x16 sprite.
I don't see a speed difference so will use tables.
This set up once.

    dim spritedata(256) as word ;trying sprite data in array instead of a table
    for ptr=1 to 256
         readtable sprite1,ptr,spritedata(ptr) ;copy table to array
    next

you can test table or array with comment on/off

    sub sprite ( in sprite_x, in sprite_y ) ;fills box with sprite data
      SetAddressWindow_ILI9341 ( sprite_x,sprite_y,sprite_x +15,sprite_y +15 )
      ptr=1
      repeat 256
;        pixel=spritedata(ptr) ;reads array
        ReadTable sprite1,ptr,pixel ;reads table
        SendWord_ILI9341 pixel
        ptr++
      end repeat

using gcstudio.

[Anobium]

Interesting results. How accurate was your timing?

[stan cartwright]

It was just a visual comparison. The difference in animation speed wasn't noticeable so I won't pursue the idea.
You'd think you'd notice the difference... 512 bytes read 8 times every loop but I didn't notice a visible animation speed increase.
Maybe it's using a mega328p. Maybe certain pics reading ram would be much faster than reading program memory. I dunno.
Interesting experiment though.