What is it?

This is 8052 CPU card designed to work with the RC2014 bus.

What makes it special?

The 8052 CPU module includes a number of extra features and enhancements designed to simplify a system build. These include:

• It will work with either the standard RC2014 bus or the latest enhanced bus where all the Z80 CPU signals are available.

• There are several options for generating a signal clock: Crystal, Oscillator or taken from RC2014 back plane.

• A reset circuit is included.

• The 8052 CPU has selectable internal ROM.

• The 8052 CPU includes a serial port as can be routed to RxD1/TxD1 or RxD2/TxD2 signal on the RC2014 bus.

Please note, this is an experimenters board as the 8052 bus architecture doesn’t directly map onto the Z80 bus architecture so expect to do some experimenting with your system build. When using the 8052 CPU some of the Z80 control bus signals (!M1, !MREQ, !IORQ etc.) will need pulling low via resistors and/or jumpers when attempting to make use of other cards.

So why all the fuss. Well, the 8052 CPU does have the excellent the 8052-BASIC available which does make it a fun and a powerful (in 1980/1990 micro terms ?? ) system.

8052-BASIC needs a couple of K’s of RAM to operate. This will need to be provide by an external card.

For more information on origins of RC2014 see:

https://rc2014.co.uk/

and join the RC2014 forum at:

https://groups.google.com/forum/#!forum/rc2014-z80

Notes:

• This is for PCB only

• This product is made in accordance with the "designed for RC2014" labelling scheme.

• The RC2014 name is a trademark of RFC2795 Ltd.