RX02 rx-01 heathkit 8 inch drive for H-11 ( lsi11 heath case drive diff?) - test-drb@ccmp.vtda.org

4 Aug 2016

link  to    area? or topic? Please?

In a message dated 8/4/2016 12:00:45 A.M. US Mountain Standard Time,  
dave.g4ugm at gmail.com writes:

There  was some discussion on this on the VCFED forums. Might be worth  a
read.

Dave

...
  -----Original Message-----
 From:  cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Richard
  Cini
 Sent: 03 August 2016 11:51
 To: General Discussion:  On-Topic and Off-Topic Posts
 <cctalk at classiccmp.org>
  Subject: Re: RX02 rx-01 heathkit 8 inch drive for H-11 ( lsi11 heath   case
drive
...
  diff?)

 Are you referring to having the  H-27 drive from Heath? I don't know for sure
...
  because I've never  seen H27 docs, but the disk
capacity is the same as  the
...
  RX01 (256k)  and I think the interface was made
deliberately incompatible,
 likely  at the behest of DEC. The version of RT-11 (called  HT-11) supposedly
...
  used a different floppy device driver.

 Again, this is based solely on what I've read from various places and  not
 direct experience (I have an H-11 with a SCSI controller; no  floppy; and it runs
...
  RT-11 no problem).

  Rich

 Sent from my iPhone

 > On Aug 3,  2016, at 1:40 AM, COURYHOUSE at aol.com wrote:
 >
 > we have  a heath  h11  which is lsi 11   aka pdp   11/03
 >
 > the  drives  are not  rx o1  or  rx o2... but are they  and the
 > controller  comparable? with rx01  or  an rx02?
 >
 >  Thanks  Ed# at    smecc 