[Simh] RP/RM differences in header commands (for ITS, salvager)

Bob Supnik bob at supnik.org
Wed Jun 26 22:05:07 EDT 2019


I don't think it's that straightforward. The write header and data 
command must include the proper Massbus word count for header and data. 
The Unibus side of the RH11 is doing 18b transfers, and so is the disk 
side, so the word count ought to be 260 for an RP and 258 for an RM.

If the simulator doesn't "skip" the right number of header words, SALV 
is going to fail on its block data check.

/Bob

On 6/26/2019 7:37 PM, simh-request at trailing-edge.com wrote:
> I would vote for someone doing just the naive write as a starting point.
> I think much software will be happy enough with just that, and then we
> can look at specific when we locate software that really do care about
> what is written into the headers.
>
>     Johnny



More information about the Simh mailing list