Lesson 2: start lable in bitmap and colors files

[SplitSpine]

Is there a reason that 'colors' is missing the '= *' at the label start, where 'bitmap' has it (IMG_START = *) ?

Does it matter?

[pweingar]

Sorry I missed your comment on Youtube. I saw it in my notifications, but the past few days have been rather busy.

No, it doesn't really matter. It's a slightly different syntax for doing the same thing, really. The = * syntax is just variable/constant declaration and definition. The way colors has it, is the same thing as when you have a label in a loop... but it's just on two lines. It might be clearer if expressed a little differently:

LUT_START .byte 0, 0, 0, 0

The main reason for the difference in the two files is that I wrote a little Python script to convert BMP files a while back, but it wasn't clever enough to make unique label names. I have to alter those by hand, and I wasn't consistent.

[SplitSpine]

Sorry I missed your comment on Youtube. I saw it in my notifications, but the past few days have been rather busy.

No problem, I move the ? over here because I thought it would make more sense here.

No, it doesn't really matter. It's a slightly different syntax for doing the same thing, really. The = * syntax is just variable/constant declaration and definition. The way colors has it, is the same thing as when you have a label in a loop... but it's just on two lines. It might be clearer if expressed a little differently:

LUT_START .byte 0, 0, 0, 0

The main reason for the difference in the two files is that I wrote a little Python script to convert BMP files a while back, but it wasn't clever enough to make unique label names. I have to alter those by hand, and I wasn't consistent.

I'm totally new to programming in assembler, but thanks to you I might got a chance to learn it (tho, my rewrite of your Lession5 code might be....not great) :)

I tried to expand it to 8 sprites (converted using your Python script) and still move it around.

Seems to work, but I did run into a 'Branch too far' error and had to add a --long-branch to the compiler.

Lesson5-8sprites.zip