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HCR ROM/RAM Box

Posted: Thu Oct 25, 2012 5:38 am
by flash1965
Hi

In a recent bulk BBC bits purchase I got an HCR ROM/RAM Box.
Trying to find some fitting instructions.
I found this
http://acorn.chriswhy.co.uk/docs/Mags/A ... ection.pdf

But not the fitting instructions. Does anyone have one of these or know where I can get the information.

Thanks

Gordon

Re: HCR ROM/RAM Box

Posted: Sun Oct 28, 2012 8:16 pm
by RobC
I've just done a quick trawl of my Micro User DVDs and it was reviewed in the March 1986 edition.

The review has basic fitting instructions - it says that the circuit board plugs into the right hand rom socket and the 40-pin socket plugs into the 6502 socket. I'd assume that the notches in the sockets should point North (just like the originals).

You then the replace the 6502 and any rom that was originally in the right most socket. It says the "other two twin sockets are attached to the two links at S21" - the polarity will be important so look to see if they are marked East and West.

Hope this helps - if you haven't got them already I can't recommend the Micro User/Acorn User DVDs highly enough!

All the best,

Rob

Re: HCR ROM/RAM Box

Posted: Mon Oct 29, 2012 8:50 pm
by flash1965
Hi

Thanks Ill take a look in that issue. Where did you get the DVD's with the magazines on ?

Thanks

Gordon

Re: HCR ROM/RAM Box

Posted: Mon Oct 29, 2012 8:58 pm
by RobC
Hi Gordon,

Sorry - should have said that they come from here:

http://www.acornelectron.co.uk/p-dvd.php

Cheers,

Rob