On Mon, 30 Mar 2015 05:47:26 +0000
Christopher Parish <christopher.parish at parishcomputers.com> wrote:
I've gotten my RL-02 -> USB Mass Storage
controller mostly working
with a few residual gremlins. Specifically, I've noticed from my
testing that I have good packs, ones that read out almost the same
every time, and bad packs, ones where half the bits seem to be in
different states every time I read them. I've left write support
untested until I can solve this problem.
Right now, my working theory is that different controllers had
slightly different timing characteristics, and I may need to adjust
more of my DPLL parameters dynamically to deal with that (something
I'd rather avoid). Of course, most of these packs haven't been put
into a drive since the mid-80s, and there could be some bit rot going
As many of you have much more experience dealing with these drives
than I do, my questions are:
- What type of long term reliability have people noticed from their
I've found the reliability of RL01s and RL02s to be excellent. I have
(3) RL02's drives I use regularly with about (30) different cartridges.
Over the years I have rarely had problems reading/writing packs between
- Is garbage data sometimes normal for certain packs
until they are
rewritten with ?fresh? data?
I have had packs on rare occasions which when I first obtained them had
a few records which were unreadable - and a clean reformat made them
100% error free. After doing so, the packs will run reliably for years.
- Has anyone noticed pack compatibility problems
Bickley Consulting West Inc.
"Black holes are where God is dividing by zero"