Which RT-11 for an 11/03

Richard Cini rich.cini at verizon.net
Thu Mar 10 19:57:43 CST 2016

On 3/10/16, 8:51 PM, "cctalk on behalf of Don North" <cctalk-bounces at classiccmp.org on behalf of north at alum.mit.edu> wrote:

>These last two read commands look awful suspicious to me. A single logical 
>device block is 512B (or 0x200) so the count
>parameter is 0x200 for one block, 0x400 for two consecutive blocks, etc. 0xA00 
>is five consecutive blocks.
>However, 0x0132 (306. bytes) is a partial block read, and 0x3CC8 (15560.) is a 
>read of 30.+ blocks. So I would speculate
>that the code went south prior to these two read commands. Just a guess of 
>course as I have never done this particular
>task. But I would guess that the image you are using has been corrupted in the 

Good point, Don. Maybe I’ll re-create the image again and see if that helps. I’m using the RT11v4 image from the SIMH distribution and it boots just fine (as an RK05 image) under SIMH.


More information about the cctech mailing list