From mboxrd@z Thu Jan 1 00:00:00 1970 From: brad@heeltoe.com (Brad Parker) Date: Thu, 01 May 2008 13:19:13 -0400 Subject: [Unix-jun72] more corrections In-Reply-To: References: <29658.1209658194@mini> Message-ID: <30873.1209662353@mini> Tim Newsham wrote: >> I made some more minor corrections; turns out the commands in e00-01 >> around "4;4" are wrong, those lines are needed or the IOT dispatch >> vector ends up in the wrong place. >> >> I suspect, in the end, most of the "hand written" corrections should >> ignored. > >I'm suspecting the opposite.. I went through all of the comments in >notes.txt about hand written corrections and read through the code to >see if they make sense or not and it seems like all of the corrections >did make sense in the code and the original code that they replaced >did not. I updated the code to reflect this and added comments to >the notes file. Ok, I may well be confused. Before I took the comments the IOT vector was zero. After I removed them the IOT vector (34) was correct. Perhaps the code wants to be loaded at 014 instead of 0. I put the comments back in - I'll try changing where I load. >btw, there are still a bunch of unresolved symbols in the low address >vector tables.. I thought only fpsym was undefined in those vectors. >> I had to add KE11A support to simh; I mostly copied the code from >> apout. > >This discussion of hardware is making me wonder -- does this nail down >the hardware? The 1ed manuals mention tht they ran on a 24kbyte >pdp 11/20, but that they were eying an 11/45. My reading of the code >was making me lean towards the original 11/20 configuration, but it >sounds like some of these features might be present in the 11/40 or >11/45? I sure looks like they used an 11/20 with a KE11A board. >speaking of modifying simh, we may have to map one of the similar >serial devices in at the dc11 address to support ttys. simh doesn't >support the DC-11, but when I asked on the simh mailing list someone >mentioned that one of the existing devices is very similar with >less support for modem control lines. I can do that. Are there docs on the DC-11? -brad