Table of contents Welcome to Retroputer Using the Web Version Technical Details Technical Overview Block Diagram Memory Layout 1125 Sound Generator 6516 Processor Register File Flags Addressing Modes System Bus ISA 6448 Video Generator Specifications Palette Colors Tile Sets Layers Hardware Sprites 9800 Persistent Storage Interface Devices I/O Bus Console Controllers Debugger DMA Hardware Timers Keyboard Mouse Power Programming Retroputer BASIC Statement Reference DEF NEW PRINT Built-in Function Reference Technical Details Memory Model Tokenization Tokens The Monitor Assembly Language Numbers Identifiers Directives Calling Convention Accessing Memory Instructions Error Messages The Kernel Standard Library Screen and Editor