27 Nov
2009
27 Nov
'09
2:34 a.m.
After years of looking, thanks to a tip from this
list,
Did it wander further? My postings were to pdp8lovers and alt.sys.pdp8
Are there any ROM dumps of the MR-78 anywhere?
Not that I know of. I have a MR78-BD on mine. The print set doesn't list
what that version does. I probably can dump it if its different from yours.
I've seen OS/278 from the DECUS collection. I must
not be looking
into the right places for OS/78.
OS78 images of the disks that came with my VT78 are here
http://www.pdp8online.com/images/images/os8.shtml
The R command not working is probably the set OS8/VT78 stuff they
added.
Also WPS78 here
http://www.pdp8online.com/ftp/images/wps/
And COS for the VT78
http://www.pdp8online.com/ftp/images/cos/
The closest source I know of is OS78 V4 which was for the DECmate I
http://www.ibiblio.org/pub/academic/computer-science/history/pdp-8/os8/
Enjoy your new toy.