Gee Bob, so what's the hold up? Seriously though -- _thank you_ for all your work on these...your simulators are great! I've had a lot of fun running the old environments on the pdp-8, pdp-11, the vax, and some of your other simulators. If I had the energy I'd get something going between my real vax and a simulated one.
Superb work, I think I can say we all love it. Eric KD5UWL On May 24, 2010, at 5:28 PM, Bob Supnik <[email protected]> wrote: > As the clock simulator says, it implements both the 8/E and 8/A > instructions. It does not implement the 8/I. > > The PDP-8 simulator is not an "all models" system; it only supports > the > 8/E and 8/A. > > Adding model-specific behavior (for the classic 8, 8/S, 8I/L, and > distinguishing the 8/E from the 8/A) would not be impossible, but it > would be fairly tedious and difficult to verify. The earlier 8's use > different peripherals for DECtape, magtape, line printer, and clock, > among others, so new peripheral simulators would be needed, along with > diagnostic and test programs. > > /Bob > > On 5/24/2010 12:00 PM, [email protected] wrote: >> Send Simh mailing list submissions to >> [email protected] >> >> To subscribe or unsubscribe via the World Wide Web, visit >> http://mailman.trailing-edge.com/mailman/listinfo/simh >> or, via email, send a message with subject or body 'help' to >> [email protected] >> >> You can reach the person managing the list at >> [email protected] >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of Simh digest..." >> >> >> Today's Topics: >> >> 1. pdp-8 experts? (Brad Parker) >> >> >> --- >> ------------------------------------------------------------------- >> >> Message: 1 >> Date: Sun, 23 May 2010 21:14:37 -0400 >> From: Brad Parker<[email protected]> >> Subject: [Simh] pdp-8 experts? >> To: [email protected] >> Message-ID:<[email protected]> >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed >> >> Any pdp-8 experts here? >> >> I've been fighting a problem with tss/8 for a bit. I've been >> working on >> getting it to build from sources. >> When I build for the pdp-8/e it seems to work correctly using simh. >> When I build for the the pdp-8/i >> I have problems. >> >> My goal is a clean build from sources for the 8/i. But the KW8/I >> clock >> emulation in simh is (to my mind) >> suspect. >> >> I'm happy to go dig in the docs and look at the schematics, but I >> thought I'd ask here also. In the TSS/8 >> sources they do this for the 8/I: >> >> 244 IFZERO CPU< >> 245 /KW8I REAL TIME CLOCK >> 246 >> 247 6137 CECI=6137 /CLEAR AND ENABLE >> CLOCK AND INTERRUPT >> 248 6133 CSCF=6133 /SKIP AND CLEAR >> FLAG >> IF FLAG >> >> Naturally, for the 8/e they say: >> >> 256 IFZERO CPU-2< >> 257 CECI=6131 /CLOCK ENABLE >> 258 CSCF=6133 /SKIP AND CLEAR >> FLAG >> IF FLAG >> >> When I build for the 8/I I don't get clock interrupts the way I >> expect. >> Looking at the clock code in >> simh 6137 won't enable lock interrupts. 6133 will skip and clear. >> When >> I build for the 8/e I got >> clock interrrupts. >> >> Ages ago I wrote KW8/I verilog code from the specs I could find and >> it >> does interpret 6137 as CECI >> and does enable clock interrupts. >> >> Anyone have an opinion? >> >> it may be that competing clock hardware (i.e. 8/i, 8/e, 8/a) have >> different ideas about 6137... >> >> -brad >> >> >> >> ------------------------------ >> >> _______________________________________________ >> Simh mailing list >> [email protected] >> http://mailman.trailing-edge.com/mailman/listinfo/simh >> >> End of Simh Digest, Vol 78, Issue 13 >> ************************************ >> >> > _______________________________________________ > Simh mailing list > [email protected] > http://mailman.trailing-edge.com/mailman/listinfo/simh _______________________________________________ Simh mailing list [email protected] http://mailman.trailing-edge.com/mailman/listinfo/simh
