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vdc loop is working but it seems 'plot (var)' is screwing up

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minjaesong
2020-08-10 08:33:03 +09:00
parent dd9f6f634d
commit e3a4b375e3
4 changed files with 389 additions and 68 deletions
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Videotron2K.md
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@@ -24,8 +24,8 @@ Consider the following code snippet:
```
DEFINE RATEF 60 ; 60 fps
DEFINE height 448
DEFINE width 560
DEFINE HEIGHT 448
DEFINE WIDTH 560
SCENE initialise
@ mov r1 height ; this line runs only once when the SCENE is called
@@ -144,6 +144,7 @@ NOTE: Any drawing command will clobber internal memory starting from address zer
* fillin byte y x-start y-end-exclusive : fills entire scanline of `y` with `byte` from the horizontal position `x-start` through
`y-end-exclusive` MINUS ONE. final (px,py) will be (scanline,x-end-exclusive)
* plot byte... : writes bytes into the framebuffer. The `px` register will auto-increment but `py` won't!
* plotp byte... : same as `plot` but treats bytes as PackBits-compressed payload
* fillscr byte : fills entire screen with a given byte
* goto x y : writes `x` to px and `y` to py (use `mov px <something>` to write to px/py only)
* border r g b : sets border colour
@@ -162,7 +163,7 @@ NOTE: Any drawing command will clobber internal memory starting from address zer
#### Predefined Constants
* RATET : framerate defined by miliseconds between each frame. Mutually exclusive with RATEF.
* RATEF : framerate defined by how many frames must be shown in one second. Mutually exclusive with RATET.
* RATEF : framerate defined by how many frames must be shown in one second. Mutually exclusive with RATET
### Auto-incrementation