J. David Bryan
jdbryan at acm.org
Sun Feb 22 21:41:26 CST 2015
On Sunday, February 22, 2015 at 13:47, Jay West wrote:
> In pouring over the documentation for the 13304A (FAB), I find one
> thing unclear. Is there a way to disable a given block?
Looking at the schematic in the ERD (92851-90001 March 1981), the only non-
intrusive way to disable a populated block is to ground the "pivot" of one
of the address jumpers for the block (i.e., the socket where the jumper
pivots for selecting 1 or 0). Leaving the jumpers out will, unfortunately,
enable the ROM bank always (rather than disable the bank always).
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