External ROM Expansion unit for the BBC Model B Plus

Home > Browse Our Collection > Computers > Acorn Computers > Acorn BBC Micro Peripherals > External ROM Expansio ... the BBC Model B Plus

The external ROM expansion unit for the B plus is designed as a plug-in unit to allow easy expansion of total ROM capability up to the maximum the system will allow. An alternative set of ROMs may also be selected if 32K ROMs are fitted by means of a front panel switch or by fitting a second card if 16K ROMs are fitted.

The unit consists of two parts:

A driver card which fits inside the computer into one of the ROM sockets.
A cream painted steel case housing a mains derived power supply together with a ROM expansion card.

The two units are connected together via a 34-way ribbon cable. The case has a hinged top cover allowing easy access for inserting or replacing ROMs without continually opening up your computer.

Date : Unknown

This exhibit has a reference ID of CH34743. Please quote this reference ID in any communication with the Centre for Computing History.

Scan of Document: External ROM Expansion unit for the BBC Model B Plus

Click on the Image For Detail

Help support the museum by buying from the museum shop

View all items

Founding Sponsors

Heritage Lottery Funded

donate to us!

Be_part_of_our_story...

We are a registered charity. Since opening in 2013, over 160,000 people, including 18,000 school pupils, have visited the Centre. Our visitors deserve a space which is engaging and inspiring, where they can feel a sense of adventure, exploration and wonder!

We have an ongoing need for small donations to support our work, major donations to move us forward as a charity and everything in between. Corporate partnerships are also welcomed.

Small donations can be made below or to make the absolute most of your donation, please do consider making a direct bank transfer. Contact us by email using admin@computinghistory.org.uk to ask for details. If you'd like to chat about supporting us please contact our Partnerships team.

All individual donations can also be Gift Aided, allowing us to claim an extra 25p on every £1 donated. Visit our Gift Aid page to complete a Gift Aid declaration.

Please be assured that any amount you feel able to donate will make an immediate and significant impact.