[Simh] weird question about the VAX's DZ port

Jason Stevens neozeed at gmail.com
Fri Mar 13 16:51:25 EDT 2009

I found this site:


And I thought it'd be interesting to see if either the
11-780/MicrovaxII simulator could run this...  So I noticed from the
source the following:

"A MicroVAX 2000 DZ at address 200A.0000."

So looking at the 11/780's output of show dev:

DZ, address=2013E040-2013E05F

And from vax780_defs.h:

#define IOPAGEBASE      0x2013E000
#define IOBA_DZ         (IOPAGEBASE + 000100)           /* DZ11 */

which doesn't quite seem right... I'm guessing the 000100 is Octal,
not Hex? Even changing it to 0x200A0000 seems to do nothing in the
source...  Where should I go to modify the base address of the DZ?



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