> > Date: Fri, 8 Jan 2016 13:40:52 -0800 > From: Charles Anthony <[email protected]> > Subject: Honeywell Series 60 (Level 66)/6000 aka DATANET 355/6600 > machine language > > I am trying to fire up a DN6600 emulator and am encountering some > discrepancies between the DD01 documentation and existing software. > > Anyone remember how to program this beast? > > -- Charles >
I wish that I kept all of the Honeywell docs that I had. I gave most of what I had to the Boston Computer Museum, so it might be a the CHM. I maintained GECOS and the front end software on a Level 66, with DN355, and 716 front ends. The software modifications to the DN355 were done under contract by Honeywell in Bedford, MA. The 355 and 716s were replaced by a pair Level 6 front ends. I still have the platter from one of the fixed head disks from the 716. If I remember correctly, the 16-bit Level 6 front ends ran modified microcode to make it 18-bits by using the parity bits. -- Michael Thompson
