PDP-11 Hard Drives

[Tony Duell]

> ================ VAX730 IDC
> 
> R80	121M	31	14	559	dec built; winchester; SMD interface
> 					(RM80 with SMD/Massbus converter)

NO, more accurately the RM80 is an R80 with a Massbus addapter. The 
R80 is not an RM80 with something added. And the interface is close to 
SMD, but different enough that you can't connect the R80 to an SMD 
controller or a normal SMD drive to a 11/730 IDC.

[...]

> Floppy

[...]

> RX50	400K	10	1	80	5.25" single sided, dual drive
> 					FM encoding

There's no reason at all why the RX50 can't use MFM encoding, and I 
thought that's how it was normally used. Certainly the Rainbow uses an 
MFM controller.


-tony