osiweb.org

I have a 555 Jungle board in my Keysytem business system. It has a network port on the back but I have no idea what to do with it. <Oh wait, we actually have the documentation online... Chapter 12 of OS65U 1.44 manual> Ah, I see. You could connect up to 18 OSI systems. Once you start timesharing on ...

Hi OSI'rs, After a long hiatus the WinOSI Emulator has been updated. http://osi.marks-lab.com WinOSI can finally run OS65U! Thanks to Mike for the clues WinOSI can now boot, read & write OS65U disk images. OS65U changes disk serial word formats at the start of the track from 8E1 to 8N1 after the tra...

Hi, I recently added X10 decoding to WinOSI, and have seen working OSI X10 interfaces back in the day. (Actually I still have all the parts to make a C4PMF interface to the powerline.) The interface used by OSI is not X10 compatible, rather it interfaces to the ultrasonic input on the old wood-grain...

I built an OSI RAM/ROM replacement board ~25 years ago (!) where I swapped out the RAM at $A000 for an OSI BASIC EPROM. This reduced the RAM from 48K to 40K for OS65D, but it didn't care. The board uses CMOS static RAM which use a fraction of the power that normal OSI boards use, saving my power sup...

Hi, I recall one of the .LOD files I had was missing an RTS as the last instruction before jumping to the run address. Depending on what you have in memory it would work or not. Could it have been Invaders? If it doesn't have one already make sure the .LOD file ends 20<cr>70<cr>02<cr>60<cr>.0222G or...