On Fri, Sep 7, 2018 at 1:52 AM Lars Brinkhoff <l...@nocrew.org> wrote:
> Timothe Litt wrote: > > > I have checked the KS10 instruction set. It doesn't have a DATAO > > > PI, instruction. However that particular opcode isn't in used, so > > > it's just a UUO. This is also the case for ITS microcode. Before I > > > start working on anything, I'd like to ask if it would be OK to > > > repurpose this opcode for its traditional use? > > > > Neither the KL nor the KS use DATAO PI,. I don't have a problem with > > implementing it for the KS. It would need to act like any IO > > instruction - MUUO in user mode, functional in Exec and with > > User-In-Out. > > Of course. > > The next problem is, how to access USB from SIMH? I have something that > works in Linux. I checked SIMH to see if there's a built in USB API > that works across operating system, but I didn't see any. I believe that device is using an FTDI chip set, which Linux/MacOS/Winders etc will see as a dynamic serial port that appears at attach time. You use open it and used traditional read and write. FWIW: If you grab the sources to the Arduino IDE and look at the interface code in there - it knows rules on how the port names will be generated in the different OSses which will be thr one tricky part, since the rules.
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