On 04-Sep-18 15:09, Paul Koning wrote: > >> On Sep 4, 2018, at 3:06 PM, Lars Brinkhoff <l...@nocrew.org> wrote: >> >> Timothe Litt wrote: >>> If a ROM device is added to the -11, I suggest that: >>> a) It be capable of multiple units >>> b) each unit with a start address (in I/O space) & length >> I was going to do this, but I quickly learned that a SIMH unit can't >> have a base address of its own. All units share the address region >> defined by the governing device. > Another way to handle ROM would be to have a switch on the LOAD command that > tells it to permit binaries that have load addresses in I/O space. Then your > current ROM devices config would be "whatever is loaded by the load commands > I have issued". > > paul > That's an interesting approach, but it may or may not provide the correct length. And it doesn't handle power-on boot/dip switches.
A unit doesn't have to be a UNIT; one can clone a master DEVICE to get multiple address ranges. It's been a while, but I'm pretty sure I did that for some device.
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