The RadiSys EXM-13A is a true color SVGA video controller card for embedded systems, delivering enhanced graphics capabilities beyond standard VGA through the NCR 77C22E+ controller chip. This expansion module interfaces with embedded PCs via the RadiSys EXM expansion interface—electrically similar to the PC ISA bus—enabling direct use of standard PC software while supporting full VGA and Super VGA resolutions with true color output.
Technical Specifications
• Controller Chip: NCR 77C22E+
• Video Memory: 1 MByte or 2 MByte configurations
• Maximum Resolution & Color Depth:
– 1280 × 1024 × 256 colors (2 MByte memory)
– 1024 × 768 × 256 colors (1 MByte memory)
• Video Standards: Full VGA and Super VGA
• Interface: 16-bit ISA-equivalent electrical interface for EPC modules
• Video Output Connectors:
– Standard DB-15 VGA connector for analog VGA or multiscan monitors
– Auxiliary video connector for flat-panel displays and alternate display types
• Form Factor: EXM expansion module
– Key Features
• Drop-in replacement for EXM-13 adapters operating in standard VGA mode (640 × 480 × 16)
• Automatic color/grayscale monitor detection
• Memory initialization during power-up may cause slight startup delay
• Multiscan monitor support with analog switch configuration requirement
– Typical Applications
Embedded systems requiring detailed visual output, industrial control interfaces, and visualization tasks demanding SVGA resolution and true color capability in compact form factors.
– Compatibility & Integration
The EXM-13A cannot coexist with other video controllers using identical video memory and I/O addresses. It is incompatible with EPC-2 and EPC-3 systems due to their integrated VGA controllers. Multiple video controllers in a single system require application-managed simultaneous enabling. Standard EGA, CGA, and monochrome monitors are not supported. Module compatibility with other EXM expansion units and carriers varies; consult RadiSys documentation for specific integration requirements. Note: This product is discontinued by the manufacturer.
