Prologica CP-500
The Prologica CP 500 was a computer fully software compatible with the TRS-80 Model III. It used a Z80A running at 2MHz, had 48KByte of RAM and 16KByte ROM. The ROM contained a low-level monitor application, and the BASIC interpreter. The machine also had 1KByte of Video RAM, a speaker, and a real-time clock.
The back-side of the computer reveals the internal bus that is offered as an expansion slot, as well as two RS232 serial ports, a parallel priner port and connections for a tape recorder.
The built in screen offered a resolution of 64 characters on 16 lines. The computer was produced in Brazil by Prologica Ind. e Com. de Microcomputadores Ltda.
CPU View - Zilog Z80 Family
The Z80 quickly became popular in the personal computer market, with many early personal computers, such as the TRS-80 and Sinclair ZX80, using the Z80 as their central processing unit (CPU). It was also widely used in home computers, such as the MSX range, SORD, and the Amstrad CPC, as well as in many arcade games. Additionally, it was also used in other applications such as industrial control systems, and embedded systems. The Z80 was widely used until the mid-1980s, when it was gradually replaced by newer microprocessors such as the Intel 80286 and the Motorola 68000.
The Z80 microprocessor was developed by Zilog, a company founded by Federico Faggin in 1974. The Z80 was released in July 1976, as a successor to the Intel 8080. It was designed to be fully compatible with the 8080, but also included new features such as an improved instruction set, more powerful interrupts, and a more sophisticated memory management system.
The Z80 quickly became popular in the personal computer
ROM: 16kB Sound Chip none Sound Beeper Display Chip none Display 64x16 text Best Text 64x16 Best Color none Graphics Text Only Sprites none System OS CP/M, Microsoft Basic