The Emerson CPU-30ZBE is a VMEbus-based single board computer built around the Motorola MC68030 processor running at 25 MHz, paired with an MC68882 floating point coprocessor. Designed for embedded systems and real-time industrial control, this board combines a full 680×0-family instruction set with substantial onboard memory, integrated serial and SCSI connectivity, and Ethernet capability. It delivers the computational power and I/O versatility required for demanding embedded applications in legacy and contemporary deployments.
## Technical Specifications
**Processor & Memory**
• Motorola MC68030 at 25 MHz with Memory Management Unit (MMU)
• Motorola MC68882 coprocessor at 25 MHz
• Dual 256 KByte on-chip instruction and data caches
• 16 MByte DRAM with byte parity
• 4 MByte 32-bit system Flash
• Optional flash memory: two sockets supporting up to 512 KByte total (standard: 128 KByte)
• 32 KByte boot memory
**VMEbus Interface**
• A32, A24, A16 address spaces; D32, D16, D8 data widths
• User Access (UAT) and Read-Modify-Write (RMW) capabilities
• 7 interrupt levels with single-level arbitration and watchdog timer
**Serial & Peripheral I/O**
• Two serial channels via Zilog 85C30 SCC (RS-232 standard; RS-422/RS-485 upgradeable)
• Motorola MB87034 SCSI controller with DMA support
• WD 37C65C floppy disk controller
• 20-bit general-purpose I/O via VMEbus P2 connector
• AM 79C90 Ethernet (10Base5) with AM 7992B Serial Interface Adapter and LAN buffer RAM
**Timing & Control**
• Two 24-bit timers with 500 ns resolution
• Real-time clock (battery-backed)
• FORCE Gate Array FGA-002
**Physical**
• 17.8 cm × 7.6 cm × 33 cm; 0.6 kg
## Compatibility & Integration
Binary compatible with 68020 user object code. Supports VxWorks, pSOS+, VRTX-32, OS-9, and LynxOS real-time operating systems.
