Development of System TRAINZ from Z80

Published:2012/3/20 21:29:00 Author:Ecco From:SeekIC

The ZiLOG Z80 is an 8-bit microprocessor made and sold by ZiLOG from July 1976 and is one of the most popular microprocessors. The Z80 derivatives and clones make this CPU the most used processor of all times. The Z80 parallel input-output (PIO) has two ports. Port A is free for any usage. The logical state of signals A0 and A1 is displayed by the LEDs D0 and D1. Primarily port B controls both the I²Cbuses 0 and 1, the monitoring of the RI signals and the system start.

The communication of System TRAINZ with the host computer is designed to allow automated communication like scripting with Kermit. System TRAINZ can be used for software development (assembly, C ...), learning the basics of computer engineering, programming, repair and maintenance, control and measurement as well as the assembly and troubleshooting of complex electronics. System TRAINZ can be operated with Linux, UNIX, MSDOS and MSWindows. Terminal programs of these operating systems are for example Minicom or HyperTerminal.

Both channels A and B of the serial interface (SIO) can be used. System TRAINZ uses only channel A for the RS232. Transmitting and receiving clock of both channels is fed by the CTC unit. If System TRAINZ is to be operated in an electromagnetic harsh environment, the line receivers may be equipped with external capacitors in order to block noise from the lines RXD, CTS, DCD and RI.

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