On Saturday, June 6, 2015 at 21:44, Cory Smelosky wrote: > It seems there's no current SIMH support for the HP 1000 A-series system > (A900, A990, A600 et cetera) meaning RTE-A (with the ARPA/1000 software!) > is unfortunately out.
That's correct. > Looks like enough docs for at least some of the later ones are up on > Bitsavers...any plans for implementing these missing models? Holger Veit <[email protected]> had been looking into doing a SIMH A-Series simulator several years ago, but I've not heard what progress he made, if any. Regrettably, relatively little of the existing HP 1000 M/E/F-Series simulator could be leveraged for an A-Series simulator. The base set instructions are the same, although the I/O instructions and I/O structure are entirely different, and there are a number of new instructions. Also, essentially none of the M/E/F peripherals (disc, tape, terminal multiplexers, line printers) were supported on the A-Series, so a whole new set of peripheral simulators would have to be written. An off-the-cuff guess would be that reusing the base set would cover maybe 20% of the full simulator code. The other 80% would have to be written from scratch. On the plus side, the full RTE-A sources, the A-Series microcode, and several RTE-A binary releases are available in the HP 1000 Software Collection on Bitsavers, so the job is by no means impossible. -- Dave _______________________________________________ Simh mailing list [email protected] http://mailman.trailing-edge.com/mailman/listinfo/simh
