I/O Functional Components - RBI
RSC Bus Interface (RBI) unit interfaces I/O with RSC I/O Bus protocol
- checks and generates RSC I/O bus address/data/control/parity
- Interfaces with IOC and DHS logic
- Carry out local memory DMA read and write cycles with the RSC processor
Controls VME data transfers
- Contains software programmable and readable control and status registers
- Maintains 8 byte data buffer for PIO store/read operations
- Maintains 8 byte data buffer for DMA writes and PIO loads
Provides all external interrupts to the RSC processor
- 7 VME interrupts
- RS-232 interrupts
- Programmable Real Time Interrupt
Provides programming interface to RS-232 data and control registers in CELLA