This software provides banked memory support for a CPU emulator. With this feature, the emulator can access and manage memory more efficiently, leading to improved performance and stability.
The implementation is quite straightforward, and the class can be initialized through the following line of code:
my $memory = CPU::Emulator::Memory::Banked->new();
From here, it is easy to use the peek() and poke() methods to read and write values to memory, as illustrated by the example below:
$memory->poke(0xBEEF, ord('s')); my $value = $memory->peek(0xBEEF); # 115 == ord('s')
One of the most exciting aspects of CPU::Emulator::Memory::Banked, however, is its ability to bank-switch. Simply put, bank-switching is the process of temporarily replacing chunks of memory with other chunks, allowing for more dynamic storage and execution of code.
With CPU::Emulator::Memory::Banked, developers can define the address, size, type (RAM, ROM, or dynamic), and file of the memory chunk they wish to use for bank-switching. Consider the following example:
$memory->bank( address => 0x8000, size => 0x4000, type => 'ROM', file => '.../somerom.rom', writethrough => 1 ); my $value = $memory->peek(0xBEEF); # read from ROM instead
This code replaces the current memory chunk with a 16kb ROM chunk starting at 0x8000. The writethrough option ensures that any subsequent writes to the overlapping memory space will affect the underlying RAM, rather than the ROM.
Overall, I found CPU::Emulator::Memory::Banked to be a powerful and versatile tool in creating complex memory architectures. Its intuitive API and robust features make it an excellent choice for developers looking to expand their programming capabilities.
Version 1.1001: N/A