Reading ESDI disks

[Nigel Johnson]

I'm talking about the DEC Q-BUS DSA world where there never was any ATA :-)


Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype:  TILBURY2591 nw.johnson at ieee.org



On 2021-02-11 1:03 p.m., Chuck Guzis via cctalk wrote:
> On 2/11/21 9:40 AM, Nigel Johnson via cctalk wrote:
>> Doesn't ATA transfer the data in parallel?  ESDI uses the same two
>> connectors as MFM (20/36 IIRC) , and transfers the data serially.  The
>> difference between MFM and ESDI is that MFM transfers the raw analogue
>> data over the cable but ESDI transfers digital serial data.
>>
> I was speaking about the interface to the controller.  Of course, if you
> don't have the right controller, all bets are off.
>
> --Chuck
>