Overview
The Western Digital WD90C30-LR is a heritage ISA 16-bit SVGA graphics card manufactured in 1991 as part of Western Digital’s Paradise graphics chipset line. This card combines solid VGA compatibility with enhanced SVGA capabilities, making it a reliable choice for restoring or building vintage PC systems from the early 1990s era.
Key Features
- 1MB of DRAM video memory, upgradeable from base 512KB configurations
- 16-bit ISA bus interface for broad system compatibility
- 80 MHz RAMDAC for fast color palette switching
- Support for resolutions up to 1024×768 at 256 colors
- 15-pin D-Sub connector for standard analog RGB monitors
- Full MDA, Hercules, CGA, EGA, and VGA standards compliance
Technical Specifications
- Chipset: Western Digital WD90C30
- Memory: 1MB DRAM (maximum)
- Memory Bus Width: 32-bit
- Core Clock: 80 MHz
- Bus Type: ISA 16-bit
- Video Output: 15-pin D-Sub (analog RGB)
- Maximum Resolution: 1024×768 @ 256 colors
- Production Year: 1991
- FCC ID: I7APVGAID
- Manufacturer: Western Digital Corporation
Typical Applications
- Retro gaming systems and DOS-era PC restoration projects
- Legacy computer displays for museums and archival computing
- Industrial and embedded systems requiring ISA graphics support
- Early Windows 3.x and Windows 95 system builds
- Educational setups demonstrating 16-bit computer architecture
Compatibility & Replacements
Compatible With
- ISA 16-bit bus slots in 286, 386, 486, and early Pentium systems
- VGA and SVGA standard monitors via 15-pin D-Sub connector
- DOS, Windows 3.0, Windows 3.1, and Windows 95 operating systems
- Legacy applications and games supporting VGA/SVGA graphics
Replaces / Drop-In Replacement For
- Other Western Digital Paradise WD90C30 variants (different regional codes)
- Paradise ISA cards from the same 1990–1991 generation
- OEM graphics cards in vintage Tandy, DFI, Northman, and Compaq systems
Works With
- Standard VGA/SVGA drivers from DOS and early Windows
- UNIVBE (Universal VESA BIOS Extension) for enhanced compatibility
- Industry-standard graphics APIs of the 1990s era
- Retro hardware emulation and restoration communities
