8-Bit Microprocessing The SAB8088 is a microprocessor manufactured by Intel. Here are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Intel
- **Part Number:** SAB8088
- **Architecture:** 8-bit/16-bit hybrid (based on the 8088)
- **Data Bus Width:** 8-bit
- **Address Bus Width:** 20-bit (supports up to 1 MB of memory)
- **Clock Speed:** Typically 5 MHz (some variants may support 8 MHz)
- **Instruction Set:** x86 (compatible with 8086/8088)
- **Transistor Count:** ~29,000
- **Process Technology:** NMOS (N-type Metal-Oxide-Semiconductor)
- **Package Type:** 40-pin DIP (Dual In-line Package)
- **Operating Voltage:** +5V
### **Descriptions:**
- The SAB8088 is a variant of the Intel 8088 microprocessor, which was a cost-reduced version of the 8086 with an 8-bit external data bus.
- It was widely used in early IBM PC and PC-compatible systems due to its lower cost compared to the 8086.
- The "SAB" prefix may indicate a military or industrial-grade version with extended temperature or reliability specifications.
### **Features:**
- **Backward Compatibility:** Fully compatible with 8086 software.
- **Memory Segmentation:** Supports segmented memory addressing (up to 1 MB).
- **Interrupt Handling:** Includes hardware interrupt support (NMI, INTR).
- **I/O Ports:** Capable of addressing up to 64K I/O ports.
- **DMA Support:** Works with Intel 8237 DMA controller for direct memory access.
- **On-Chip Registers:** Includes fourteen 16-bit registers (general-purpose, segment, and control registers).
This information is strictly based on documented specifications of the Intel 8088 family and related variants.
