On Sat, Jun 2, 2018 at 12:43 PM, Tony Duell via cctalk < cctalk@classiccmp.org> wrote:
> On Sat, Jun 2, 2018 at 7:37 PM, Alan Frisbie <flash...@flying-disk.com> > wrote: > > Tony Duell <ard.p850...@gmail.com> wrote: > > > >> > until the 8085 CFE loaded the microcode. > >> > >> Loaded from a TU58 cartridge, which is the main reason my 11/730 is not > >> running at the moment. The hardware is fine, I've rebuilt the drive > >> rollers, > >> but as yet don't have a readable tape (not even blank, to write the > >> microcode onto). > > > > I'm pretty sure that I have a complete set of 11/730 TU58 tapes in > > my storage unit. I might even have some brand new tapes. If I > > can find them, I would be happy to send them to you. They have > > been sitting in storage for probably 20 years, so there are no > > guarantee that they are readable. > > Thanks... I will certanly give them a go. I am pretty sure the problem > I am having is the tape, I get a low (and varying) amplitude signal at > the output of the read amplifier, it varies with different tapes, and it's > much the same both on the drive in the 11/730 and a standalone > TU58 I have. > Given the vagaries of tape, I'm surprised nobody has made a simple TU58 emulator that can feed the proper microcode bits to the 11/730... Then again, maybe there's no market for that. Warner
