Fixed it by clearing the screen state of the PPU.

Made read MMU a non mutable operation.
Added support for CPU description.
Added Display support for CPU.
Extracted type definition for `Instruction`.
Support for diag_gb!() - uses global unsafe approach, which is not problematic for the purpose.
Inline fetch() operation in cpu clock.
Moved pedantic validation up in the CPU.
Fix simple diag issue.
Changed naming of read and write unsafe ops to raw.
New pedantic asserts.
Fix an issue with HDMA destination address prevent CHIP-8 ROM from
working.

Uses simple ranges for matching, optimization done via LLVM.
Faster performance in read and write on x86-64.
Improved code readability.

Includes simple example in main gb.rs file.

Making it possible to indirectly access the registers via constants.

Adds OBP0_ADDR and OBP1_ADDR to the list of registers.

More standard support for the `BusComponent` interface.

Made use of const values to store global data.
Polling is done on every tick, supposedly it's the best approach for libretro.

Makes use of hex based colors to simplify interface.

Allow simple screenshot saving.

Add a more functional approach to frame buffer update, using chunks.
Should improve scalar based processing.

The lazy evaluation is only support for DMG.

In restoring the VRAM

Made VRAM update possible.