[Simh] re. still unable to specify disks larger than 2 GB

[Galen Tackett]

JM,

Did you tell us what the host environment is under which simh itself is 
running? Maybe I missed it.

I tried to get large disk support working on my simh Vax under OS X 
V10.3.9 but discovered that for OS X at least, some of the necessary 
code to handle this isn't yet present in simh.

The source file in question is sim_fio.c. At present (simh V3.4-0) it 
appears to support large disks only under OpenVMS Alpha, Unix on an 
Alpha, (I take it this means Tru64?), Linux, or windows. (Notice how I 
subtly put windows last and didn't capitalize it. :-) I haven't 
examined it closely enough to ensure that the proper code gets compiled 
in each of these cases, but under any other host environment it 
certainly looks like it will compile WITHOUT support for large disks.

It might be pretty easy to add this for systems that have inherent 
support for 64 bit file offsets, as OS X does. But I haven't tried so 
far.

Comments from any of the real simh hotshots?

Galen