Z80-512K is an RCBus and RC2014-compatible module, designed to run RomWBW firmware including CP/M, ZSDOS, and various applications under these OSes. Z80-512K combines functionality of the following RC2014 modules on a single module, thus saving space on the backplane:

• Z80 CPU Module
• 512k ROM 512k RAM Module
• Clock and Reset Module

In addition to these functions, Z80-512K includes programmable CLK2 clock divider, and optional support for battery-backed SRAM, power failure NMI generation, and a watchdog.

A minimal CP/M computer system can be built using Z80-512K module, an RCBus backplane, and a serial port module, such as Z80 SIO or MC68B50 ACIA. For a more capable CP/M system, add a storage module, for example Flock V2 Floppy Disk Controller and Real Time Clock module, or a Compact Flash module.

What is included

The kit includes all the components necessary to build the Z80-512K Module: The PCB, 4 integrated circuits, including a 512 KB Flash ROM preprogrammed with RomWBW firmware, a pre-programmed CPLD, Z80 CPU, 512 KB SRAM, and a 7.3728 MHz oscillator, an LED lamp, capacitors, resistors, resistor arrays, and connectors.

Note: The Z80-512K V2.0 kit does not include CPU supervisor IC and related components since RCBus backplanes typically already provide a CPU supervisor. If CPU supervisor, battery-backed SRAM, and watchdog functionality is desired, the components can be purchased separately (please let me know if you need help with purchasing these components). It also does not include the JTAG header and resistors for JTAG. These components only needed if re-programming CPLD and if needed can be purchased separately.

Looking for PCB and CPLD only option? Please check Z80-512K - RCBus Module: PCB and CPLD