This is a Buy-It-Now sale for a replacement Integrated Circuit, for the Acorn BBC Model A or B.

Acorn BBC Micro Model B OS 1.20 ROM, original Hitachi part HN613128PB04.

Ideal as a replacement for a faulty one, or to upgrade your earlier machine that is fitted with the original OS 0.1 to the later OS 1.20, for the best compatibility. To check what version of OS you have in your machine, turn it on and type:

*FX0

A result of OS EPROM 0.1 means an upgrade is advised.

The item photo is a sample of the IC you will receive. It will be a genuine Hitachi HN613128PB04 ROM, but may be a different date code. Item supplied is used and tested.

** Please see my feedback to see what other people who have bought my items think of them **
** You will not be disappointed! **

** FREE UK POSTAGE **

** Worldwide shipping by the eBay Global Shipping Program **

We also supply GOTEK USB drives for the BBC Micro, as well as Raspberry Pi multi-core Second processors in internal and external versions.
As well as 1770 Disk Upgrade kits, 4 way switchable OSs for the Master 128 and 2 way for the B+, we can supply other refurbished BBC Model Bs and Master 128s to your specification.
Please check my other items for sale, or if they've sold out on my listings, please contact me for details.