Second hand compatible Acorn BBC Master ROM cartridges, 2 ROM sockets that can accept either 2x 32Kbit ROM or 2x 128Kbit ROMs. Cosmetic condition does vary but all fully functional.

Used to allow easy access to ROMs which can then be inserted into the cartridge slot on the BBC Master 128. Also can be fitted into an Acorn Electron Plus 1 expansion unit.

We have a variety of brands/designs, and will ship one at random from our remaining stock unless you specify a preference.

1. Advanced Computer Products, Advanced ROM MkII Adaptor

2. No brand marking but the PCB is marked (C) 1986 R James Auckland NZ. ** SOLD **

3. Watford Electronics

4. No brand markings (One has orientation instructions printed on the non ROM side)

5. CARE Electronics

We follow ebay guidelines and only send to a verified PayPal address unless by prior arrangement.
UK delivery: Light Items are normally sent by Royal Mail untracked post, heavier items are sent by 3-5day courier.
Non UK delivery is normally sent by untracked Airmail (2-3 weeks Europe, 3-6 weeks for most of the rest of the world).
Next day delivery in the UK and express delivery to the rest of the world can be arranged.

Cheques payable to "Fourth Dimension" please.
Bank transfers to Sort Code: 20-20-62 Account no.: 70677213 Acc. Name: Fourth Dimension
International bank account no.: IBAN GB26BARC 202062 7067721
SWIFT BIC: BARCGB22 n.b. If your Bank requires an 11 character SWIFT BIC, use BARCGB22XXX instead.

four-d-pi-shop is the ebay arm of CJE Micro‘s & 4D, who have the world's widest range of Raspberry Pi/RISC OS & Acorn accessories including many from third parties, most of which are famously normally 'In Stock'. Established in 1981, we have always specialised in hobbyist computing and have gained a reputation for a broad knowledge with high quality pre- and post-sales service.
CJE & 4D have, over the years, developed many of our own products for Acorn/RISC OS & Raspberry Pi computers. From the first ever 3rd party accessory for BBC Micro Model B (cassette leads) to the first ever 3rd party hardware for the Raspberry Pi Model B (Real Time Clock Module).
We are continuing to develop new products and expect to make a number of significant launches during the next year. Fourth Dimension (4D) is a sister business to CJE Micro's, having been a sibling since 1998.

The Shop

Our showroom and sales area is normally open from: Monday to Friday 9am - 5.30pm
To find our shop you can view our address in the "Business Seller Information" below.
To contact us via another method you can view our contact details under "Business Seller Information" below, please note that the mobile website and app may differ