Page 1 of 1

Model B+ ROM placement and position of L hats

Posted: Sat Jan 04, 2020 12:47 pm
by Remklep
Gents,

Is there a preferred position for the different ROMS to be in expansion sockets?
ie. at the moment in my model B+ in socket IC71 I have the Acorn OS ROM, in IC68 thg 1770 DFS ROM and in IC62 the TurboSPI ROM.
The homemade stack of 3 62256 mem chips is in socket IC44.
Does the order matter?

Also, what do the jumpers L9, L11,L12,L15,L18,L19 and S13 do?

Thanks.

Re: Model B+ ROM placement and position of L hats

Posted: Sat Jan 04, 2020 12:59 pm
by rmbrowngr
This article can answer some of your questions: https://martin-jones.com/2015/01/18/sid ... o-model-b/

If you are adding sideways RAM as described in this article http://www.firths.org/bbc/my_b+128k.html I would recommend placing it in IC57 socket as it works correctly with the utils in the DFS ROM.

Re: Model B+ ROM placement and position of L hats

Posted: Sat Jan 04, 2020 3:08 pm
by Remklep
Thank you kindly Sir, moved the RAM chips to IC57.

Re: Model B+ ROM placement and position of L hats

Posted: Sat Jan 04, 2020 3:31 pm
by 1024MAK
See also this thread.

Mark