DEC Pro hard drive formatter

Bjoren Davis bdweb at
Thu Jan 14 14:24:49 CST 2021

I've successfully used a DREM-2 ( with my Pro 380 
for both floppy and hard disk emulation.


On 1/14/2021 2:14 PM, Bill Gunshannon via cctalk wrote:
> On 1/14/21 1:52 PM, Paul Koning via cctalk wrote:
>>> On Jan 14, 2021, at 1:42 PM, Chris Zach <cz at> wrote:
>>> ...
>>> Is there a hardware emulator that can emulate RX50's from images to 
>>> a Pro? Been wondering that...
>> Perhaps David Gesswein's MFM emulator could be modified to do that.  
>> You might ask him.  I don't think it does so out of the box, though.  
>> The signal frequencies are much lower than those of hard drives.
>> Some others make products that claim to offer the capability, 
>> is one (mentioned by David) and I also found 
>> this . 
>> I know nothing about either.  Standard PC floppy formats use 9 
>> sectors per track but normal drives can handle 10-sector DEC formats 
>> too.  If the emulators are done right they should handle that as 
>> well, but of course you'd have to confirm that.
> What about the GOTEK with modified firmware that they are talking
> about in other groups?
> bill

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