Pre invalidating space

07-Oct-2017 14:04 by 7 Comments

Pre invalidating space - Intalniri la webcam chat

like *to compile all invalid objects in your schema at once.

The 60Hz arcade frequency is very difficult to achieve on the SAM, particularly since we only have control for part of each frame.

If you lack that Rob van Wijk's answer is the way to go.

One way of tackling this is to deploy your code in the correct order.

Each has a byte for the character number and an attribute byte for colour information.

The actual character graphics are stored as a 2-bit images, with the attribute byte determining the palette colours used (more on that below).

Using 32-byte strips of memory makes dealing with the display much easier, and should also help with our own emulation.

Displayed above the character layer are eight sprites, each 16x16 pixels in size.Despite the main display width being 28 characters, the first and last two rows are 32 characters wide.These 4 outer columns only exist for the 2 lines at the top and bottom of the screen, and are not part of the visible display.Like the character graphics, the sprites are stored as 2-bit images, with black being taken as transparent so you can see through to the character layer.Like the rest of the video details, the palette situation is not straight-forward either!The character display layout is quite unusual, and worth describing in a little more detail.