Z8S180 CPU Board
GENERAL DESCRIPTION
The ELCOSYS Single Board Computer ELC-180 is a board based on the Z8S180 Zilog microprocessor (static version of the Z180) with a clock frequency of 18.432 MHz and is an excellent hardware both for software development and testing and for use as target card in the application phase. A Monitor / Debugger program is provided which allows the loading and execution of programs assembled in Intel hex format from a PC. The Debug Monitor program is supplied on a 16k x 8 (32k x 8) EPROM.
Installation
The board must be powered with a continuous voltage between 7 and 12 VDC and absorbs a current of approximately 85 mA; it must be connected to the serial port of a PC or to an ASCII terminal. No other steps are required to use the ELC-180.
ASCII terminal connection
The board's H3 connector must be connected via a standard DB-25 connector to the terminal's RS-232C serial port. The default configuration of the card is 9600 baud, 8 data bits, 1 stop bit, no parity. By powering up the board, the terminal will respond with the opening message:
ELCOSYS
ELC-180 Single board computer
Zilog Z8S180 Debug Monitor Ver.1.2
DEBUG MONITOR >>
Connection to PC
An IBM terminal emulation program is supplied with the card. The TERM.EXE program performs a simple terminal emulation and allows the loading of application code in Intel Hex format. The ELC-180 board can be connected to both COM1 and COM2 of a PC. Typing TERM starts the emulation program (after connecting the power supply and the serial cable as described in par. 1.1) A '>' prompt will appear on the PC screen. If the 'TERM.CFG' configuration file does not yet exist, the program will ask for the configuration data which will be saved in 'TERM.CFG'.
Alternatively, you can specify the port parameters with the following command line:
TERM p bbbb
where p (= 1 or 2) specifies the port (COM1 or COM2) and bbbb is the baud rate. As mentioned earlier, the card is configured by default as 9600, N, 8.1.
The operational use of the ELC-180 Microcomputer can be summarized in the following steps:
Connection of the ELC-180 card to a terminal or to a PC via RS232C
Software development with resident BASIC, with the possibility of using routines in Z180 assembler
Testing and debugging of the application software with the possible use of external hardware modules.
Technical data
- Z8S180 ZILOG CMOS CPU with 18.432 MHz click frequency
- RAM Memory 512k x 8
- EPROM / EEPROM Memory 512k x 8
- DS1232 Microprocessor power control monitor (5V + / -5%) and watchdog timer
- 82C55 1 Parallel Programmable Interfaces for a total of 24 I / O lines (3 ports 8 bit)
- RS-232C port (1200 to 38600 bps)
- RS-485/422 port for local networks on twisted pair (up to 32 ELC-180 cards)
- MTBASIC multitasking compiler on EPROM
- Compiler C and Assembler Zilog Z180 available on request
- Dimensions: 100 x 80 mm (standard 1/2 EUROCARD).
- Power supply: 7… 12V DC 50 mA (regulator on the board)