28 Jan
2014
28 Jan
'14
2:03 a.m.
Hmm, you need an RL02 drive and a certain revision of the internal
controller board of the RL02. The modification is fairly straight
forward, from memory it changes 2 signal paths on the internal controller.
(Rev E, I believe, but not entirely sure).
Ed
How complex is this modification? I have several RL02
and RL01 packs.
(My problem is actually the reverse, I only have an RL01 drive).
/P
On Tue, Jan 28, 2014 at 09:43:10AM +0100, E. Groenenberg wrote:
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Indeed it does work as Johnny describes. I have such an RL02 (got it
from the Dutch Dec field service Org. when they cleaned out their
warehouse). To enable/disable the RL01 compat mode, I have to flip
a switch which is only accessible when the topcover is open.
Ed
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On 2014-01-27 23:55, Ian King<IanK at
LivingComputerMuseum.org wrote:
> RK05 drives are hard-sectored, as you mention. RL02s are not, and
the
same
packs will work on either. The only hard constraint is RL01 vs.
RL02
- you can't use an RL02 pack in an RL01 or vice versa. -- Ian K7PDP
True, with a caveat. You can modify an RL02 drive to be capable of
reading both RL01 and RL02 packs, but it requires a hardware hack.
When I worked at DEC, we had such a drive.
However, an RL02 drive cannot reliably write RL01 packs.
Johnny