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You can basically do that already with the 470 you can mix and match ram and rom over the entire 64k space , i put decoding for a11 and a10 on there but you could add a couple of switches instead for even more options i.e switch in out basic , i set mine to switch for cpm or 560z support

Hi Glitch, you are correct it goes in backwards compared to other osi boards, i think the idea is to put it in the front so a 4 slot back plane can hang off it

I think I still have a couple 582 repository still

Hi, do you have any pictures, what boards are in it, ?

Hi , i need to clean up a bit so i am selling some reproduction and original designed boards. most of these are first run 5 board runs. they were sold originally back in the day for $35 so that is the price + shipping. if there is a demand i could make more and the price would come down. 430B needed...

***UPDATE*** bin loader is needed to properly load pdp8 paper tape images boot file is updated to load binary images I thought i would start a thread on building the 560z ,as the boards look like they are soon to be done. I have worked on the driver software, and by reading the documents it was writ...

Any one have a pre version 3 os disk image?

trying to add stuff to existing gerbers is not easy on some boards , when I did the 470 it was easier just to redo the whole thing from schematic and then make it look similar to the original, for example it would be nice to have 12bit ram on the 560z but it's to tight in the proto section so the wh...

See

http://osiweb.org/osiforum/viewtopic.php?f=4&t=178

430b also im gonna make a few of these




I have been working on a 598 harddrive controller