17 Aug
2015
17 Aug
'15
3:42 p.m.
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