[TUHS] Fwd: Unix V0 on SIMH PDP-9

All, I received this interesting e-mail from Michael Thompson: ----- Date: Fri, 21 Feb 2020 12:50:12 -0500 From: Michael Thompson <michael.99.thompson(a)gmail.com> To: Warren Toomey <wkt(a)tuhs.org> Subject: Unix V0 on SIMH PDP-9 I modified the PDP-7 .simh file so it will run on a SIMH PDP-9. (attached) We have a running PDP-9 at the RICM. If I added EAE, (we likely have the necessary parts) and made a disk emulator like the one at the LCM, we could also run UNIX V0 on it. It would be nice to have the disk emulator emulate an RB disk, but that would also require emulating a DMA adapter. I am considering making an FPGA to emulate the memory controller and 32KW of memory. If I did that, I could put the RB and DMA emulation in the same device. -- Michael Thompson ----- End forwarded message ----- set cpu 8k set cpu eae set cpu history=100 show cpu # set up SIMH devices: # UNIX character translations (CR to NL, ESC to ALTMODE): set tti unix # RB09 fixed head disk: set rb ena att rb image.fs # enable TELNET in GRAPHICS-2 keyboard/display(!!) #set g2in ena #att -U g2in 12345 # disable hardware UNIX-7 doesn't know about: set lpt disa set drm disa set dt disa set mt disa set rf disa set ttix disa set ttox disa # show device settings: show dev # load and run the paper tape bootstrap # (loads system from disk) load boot.rim 010000 go Cheers, Warren