FWIW the other issue I had with the IDE card was that it was very stable with MSDOS using either the 80286 or 8088 boards but flakey with CPM3.0/Z80. Even at 6 mhz using a 20mhz rated Z80. Switching to an "old stock" Z80 fixed everything and it's now very stable. There's something about the current production Z80 that didn't seem to work well.
I've also stuck with Kingston branded 4gb CF cards.
- Gary
On Wednesday, January 14, 2015 at 10:37:35 PM UTC-5, norw...@aol.com wrote:
Gary wrote:
>> When I was getting my Dual IDE card up and running I found that
>> the
Toshiba 82C55-10's I had didn't work well.
I also found this to be true. The 8255-5 worked much better than the CMOS parts I tried, BUT sadly, I couldn't get my dual IDE card to work reliably *at all*. I made the 74LS03 --> 74S03 mod. and changed the SIP out. It worked well enough to be a tease -- but the minor glitches (bad bytes in sectors written and read) were enough to convince me that there was no way it would work reliably as a compact flash hard drive. BTW, I was trying to get it working with CP/M 2.2.
I also think that I was using the IDE/CF adapters from NewEgg.
Unfortunately, I don't have the diagnostic tools that Rich has, so I guess I'm stuck.
Roger