Hitachi HD64180
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The HD64180 is a Z80-based embedded microprocessor developed by Hitachi with an integrated memory management unit (MMU). It appeared in 1985.[1] The Hitachi HD64180 "Super Z80" was later licensed to Zilog and sold by them as the Z64180 and with some enhancements as the Zilog Z180.
It has the following features:
- Memory Management Unit (MMU) which supports 512k bytes of memory and 64k bytes of I/O space
- 12 new instructions were added
- Two channel Direct Memory Access Controller (DMAC)
- Programmable wait state generator
- Programmable DRAM refresh
- Two channel Asynchronous Serial Communication Interface (ASCI)
- Two channel 16-bit Programmable Reload Timer (PRT)
- 1-channel Clocked Serial I/O Port (CSI/O)
- Programmable Vectored Interrupt Controller
The Micromint SB180 and SemiDisk Systems DT42 CP/M computers and Olivetti CWP 1 and ETV 210s videotypewriters (also running ROM based CP/M 2.2) were based on the Hitachi HD64180.
References
- ^ Reh, Tilmann (November 1991). "The CPU280 - When 8 Bits Aren't Enough" (PDF). The Computer Journal (53): 3-5. ISSN 0748-9331. Retrieved 1 December 2016.