On 8/17/2015 12:48 AM, drlegendre . wrote: > Thanks for the input, gents.. > > Sigh.. and here I sit, yet again, with neither a logic analyzer nor a > decent digital scope. Unless something comes up, looks like I'll have to do > it the hard way, as usual - heh. >
Do you at least have a logic probe and a 20Mhz analog 'scope? > At least the machine doesn't have a totally scrambled brain, with the > correct CPU - so it will be easier to work through things, as I can at > least partially communicate with the hardware if needed. Well, except for > the lack of bootable media.. > > Anyone have a spare Z-80? Or some bootable media for the Osborne 1? I have > a few CP/M machines here, but I don't think any of them can write media for > the Osborne. Even so, I'd need a way to get the Oz disk images to the > machine of choice.. and that's another huge hurdle. > > Help a brother out.. I need some bootstrap media!! ;-) > My solution to that kind of issue has been my SD Card HxC floppy simulator, available on eBay or direct from www.lotharek.pl . Info on the design available at http://hxc2001.free.fr/floppy_drive_emulator/ . Then I go looking out on the 'net at bitsavers and other locations for floppy images for whatever system I am working on. JRJ
