Major

Major Version Number.

Major Version NumberIndicates the major version of the PORT peripheral implementation. Major version changes represent significant architectural changes, new major features, or modifications that may affect backward compatibility.

主版本號，表示PORT周邊實現的主版本

• Bit Field: [31:24] of VERID register
  
• Width: 8-bit unsigned integer
• Range: 0-255
• Incremented for major architectural changes
• May indicate breaking changes or significant new capabilities

註

Major version changes may introduce breaking changes

Software compatibility should be verified across major versions

Different major versions may have different register layouts

Critical for ensuring correct hardware/software interaction

Version Handling:

switch(version.major) {
  case 1:
    // Initialize for version 1.x PORT implementation
    init_port_v1();
    break;
  case 2:
    // Initialize for version 2.x PORT implementation  
    init_port_v2();
    break;
  default:
    // Unsupported or unknown major version
    return ERROR_UNSUPPORTED_HARDWARE;
}

警告

Different major versions may require different software handling

Always verify software compatibility with detected major version

May indicate different register addresses or bit field layouts

註

Typical major version changes:

• New register map organization
• Additional or reorganized functionality
• Changes in pin control mechanisms
• Modified electrical characteristic controls
• Architectural improvements or redesigns