8085 CPU Module PCB

Name: 8085 CPU Module PCB
SKU: 24774
Price: 7.00 USD
Availability: OutOfStock

8085 CPU Module for RC2014 - PCB Only

Designed by feilipu in Australia

2021-10-13T04:40:27.663Z-startrek-8085.png

$7.00

Out of Stock

Sold out since Oct 04, 2023

Store will be on vacation throughout October and November 2023.

8085 CPU Module for RC2014 - PCB Only

What is it? An 8085 CPU Module designed for the RC2014 computer system. It provides a 8085 CPU operating at nominally 7.3728MHz, integrated with the RC2014 Z80 Backplane. It is a 4 layer PCB. Why did…

What is it?

An 8085 CPU Module designed for the RC2014 computer system. It provides a 8085 CPU operating at nominally 7.3728MHz, integrated with the RC2014 Z80 Backplane. It is a 4 layer PCB.

Why did you make it?

To support RC2014 standard modules while using the 8085 CPU. Adaption of the Intel 8085 bus signalling to the Zilog Z80 standard is included.

What makes it special?

The 8085 CPU Module is fully buffered from the Z80 bus using (preferred) AHCT logic. This has better drive characteristics than the CPU itself, and this potentially reduces ground bounce when using the standard RC2014 CF Module.

Includes DS1233 based power monitor and RESET manager circuit, to provide a clean RESET signal and ensure sufficient voltage is available before releasing RESET.

An adaption circuit is provided to match the 8085 bus signals to the Z80 /IORQ signal expected by RC2014 standard modules.

A Wait State circuit is provided to match the 8085 READY signal timing to the Z80 /WAIT signal expected by the RC2014 standard modules such as the APU Module, and the UX Module.

Both Digital Research CP/M-IDE 2.2 and Microsoft Basic 4.7c are supported by this 8085 Module.