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The Zilog Z80 is an 8-bit microprocessor designed by Zilog that played an important role in the evolution of early computing. Launched in 1976, it was designed to be software-compatible with the Intel 8080 , offering a compelling alternative due to its better integration and increased performance.
The Dick Smith Super-80 was a Zilog Z80 based kit computer developed as a joint venture between Electronics Australia magazine and Dick Smith Electronics.. It was presented as a series of construction articles in Electronics Australia magazine's August, September and October 1981 issues.
A good example is the Zilog Z-80 SIO from 1977, designed to work with the widely used Zilog Z80 to provide two serial ports with relatively high speeds up to 800 kbit/s. The SIO is technically a USART , as it understands synchronous protocols.
Shima moved to Zilog in 1975 and, using only a few assistants, [8] developed the transistor-level and physical implementation of the Zilog Z80, under the supervision of Faggin, who conceived and designed the Z80 architecture to be an instruction set compatible with the Intel 8080. This was followed by the same task for the 16-bit Z8000. [3]
Zilog Z80 @ 2.106 MHz: Memory: Mk I: up to 32 KB on-board RAM Mk II: up to 48 KB on-board RAM: Display: 64 × 30 character display, monochrome: Sound: none (external additions possible) Connectivity: composite video, Centronics parallel, RS-232, sound in/out for cassette use, 50-pin ribbon connector including the S-100 bus: Related: Tulip
Zeus is a two-pass assembler which uses the standard Zilog Z80 instruction set mnemonics. It was one of the first assemblers to tokenise source code as it is entered, along with MAC/65 for the Atari 8-bit computers , similar to how many BASIC implementations work.
Sperry Univac UTS 40 CP/M 2.2 - Zilog 80 [12] Stride 400 series CP/M-68K was one of many operating systems on these; SWP ATR-8000 CPM 2.2 - Z80 4mhz; SWP ATR-8500 CPM 2.2 - Z80 4mhz 'Littleboard" form-factor; ZX Spectrum family (built by Amstrad)
The basic system was powered by a Zilog Z80 driving the display chip with a RAM buffer in between the two. The display chip had two modes, a low-resolution mode at 160 × 102, and a high-resolution mode at 320 × 204, both with 2-bits per pixel for four colors.