Z800x

The Z8000 was an interesting model at that time; something difficult to work with but able to address much more physical memory than the competitor models of Intel and Motorola. This fact led to some successes in design. But again Zilog was not in a position to give good support. This problem already existed for the Z80. Compared with Intel, which had staff of about 10.000 persons and had works and sales departments all over the world Zilog only consisted of several hundreds of employeees. In addition Zilog decided that the Z8000 should not be software compatible with the Z80. This was a enormous strategic mistake. Although the Z8000 had one of the most elegant designs at that time it fell back in the competition with Intel and Motorola.

N-Channel silicon gate depletion load technology; segmented version of Z8000 series; 48 pin DIP; adresses 8 MBytes of memory; two operating modes - system and normal - and the distinction between code, data and stack spaces within each mode allows memory extension up to 48 megabytes; it is available a companion memory-management device Z8010;

N-Channel silicon gate depletion load technology; non segmented version of Z8000 series; therefore it does not have segmented registers and can not use segmented addresses to address memory; thus it can only address 64 KBytes of memory; simpler than Z8001; 40 pin DIP; two operating modes - system and normal - and the distinction between code, data and stack spaces within each mode allows memory extension up to 384 KBytes;

uses both segmented and non segmented address spaces; interfaces with the entire Z800x family of support components; binary compatible with other Z800x family microprocessors; abort capability and test / set status available; 48 pin package

uses only non segmented address space; interfaces with the entire Z800x family of support components; binary compatible with other Z800x family microprocessors; abort capability and test / set status available; 40 pin package

8065: Burst Error Processor
8068: Data Cyphering Processor
8073: System Timing Controller
8103: Octal Bus Transceiver
8104: Octal Bus Transceiver
8107: Octal Bus Transceiver
8108: Octal Bus Transceiver
8010: Memory Management Unit
8016: Direct Memory Access Transfer Controller
8120: Octal register
8030: Serial Communications Controller (I/O)
8036: Counter Timer I/O
8038: First In / First Out I/O
8052: CRT Controller
8060: First In / First Out Buffer
8065: Burst Error Processor
8068: Data Ciphering Processor
8073: System Timing Controller
8090: Intelligent Peripheral Controller
8121: 8-bit Eqal-to Comparator
8127: Clock Generator
8133: Octal Latch
8136: 3 to 8 Decoder
8140: Octal Bus Driver
8144: Octal Bus Driver
8148: 3 to 8 Chip Select Decoder
8160: Error Detection and Correction Circuit
8161: Error Correction Multiple Bus Buffers
8162: Error Correction Multiple Bus Buffers
8163: Dynamic Memory Timing, Refresh and EDC Controller
8164: Dynamic Memory Controller
8165: Octal Dynamic Memory Drivers
8166: Octal Dynamic Memory Drivers
8173: Octal Latch
8877: Floppy Disc Controller