> On Jan 29, 2018, at 6:03 PM, Noel Chiappa via cctalk <cctalk@classiccmp.org>
> wrote:
>
> ...
>> (actually, this should work with Q18 QBUS systems as well)
>
> Goodness, never thought of that. Hmmm.. it's probably enough hassle to mod
> the software (who ever heard of a 'QBUS map' on a QBUS -11 - but you'd need
> it to give DMA devices access to high memory) ...
No, there is no such thing as a QBUS map. Q18 systems are like 18 bit Unibus
systems such as the 11/45: they have a max of 124 kW of memory so 18 bits
address all available memory.
paul
