Package dioscuri.module.dma

Class Summary

DMA	An implementation of a DMA controller module.
DMA16Handler	Handler for the slave DMA controller, providing implementations for 16-bit read and write functionality This handler will be registered with the DMA class to provide device-specific methods for reading (memory -> device) and writing (device -> memory) a word via DMA.
DMA8Handler	Handler for the master DMA controller, providing implementations for 8-bit read and write functionality This handler will be registered with the DMA class to provide device-specific methods for reading (memory -> device) and writing (device -> memory) a byte via DMA.
DMAChannel	DMA Channel Class representing the structure of a DMA channel; each channel contains: - mode register (sets mode and transfer type) - current and base address (memory location of read/write) - current and base count (number of transfers) - used status (channel is in use)
DMAController	DMA controller Class representing the structure of a DMA controller; each controller contains: - 4 channels, eah having a DMA Request (DRQ) and DMA Acknowledge (DRQ) bit - mask register (disables incoming DRQs) - flipflop (additional address bit) - status register (status of terminal counts, DMA requests) - command register (operation control)
DMAModeRegister	DMA mode register Class representing the mode register a DMA controller