eBay

RAMAMP RA20+44 Sideways RAM Board with ROM

Description:

This is a listing for a RAMAMP RA20+44 Sideways RAM Board & ROM

For use with: BBC Micro

From Acorn User, April 1985:

"The RA20+44 board has 20K of RAM addressed from&3000 to&7FFF when switched on with *VIDEO. This will in effect give you back 20K of RAM if you are using say MODE O. There is also 2 slots of sideways RAM from &8000 to &BFFF which can be used for ROM based software. There is a further 12K of RAM from &8000 to &AFFF which can not be used as sideways RAM. This is the situation in the BBC+ and it means in effect that this board will turn
your BBC into a BBC+ as far as the VIDEO and the extra 12K RAM is concerned. One can read and write to this 12K RAM in the same way as the BBC+ does. We offer this RAM as a printer buffer."

No software or manual/fitting instructions are supplied. It fits in the 6502 socket, and the flying lead goes to Lk21 with the orange wire to the left and yellow wire to the right.

Can be fitted at the same time as the RAMAMP Sideways ROM board, just connect the wire from the ROM board to the header on the RA20+44 instead of going to Lk21.

Condition:

Good condition. See photos.

We can ship Worldwide.

If delivery to your country is not shown please contact us for the price.

See our other listings for more retro computers, parts and accessories!

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Payment

We are able to accept payment by cleared cheque and Postal Order (£3 handling fee). 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
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About Us

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 hobbiest 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.

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