Is there such a thing as DBA-SCSI?

[WBSTClarke]

It makes me wonder if the 8570-x81 and -x61 (similar drives to the 8580-081, -161 and -A16) should be considered to have DBA-SCSI drives, except that the Set Config panel displays would still refer to them like DBA-ESDIs. I guess their onboard electronics directly interface to a bare RLL or whatever HD.

https://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=%2Fcommon%2Fssi%2Frep_ca%2F5%2F897%2FENUS392-265%2Findex.html&request_locale=en&fbclid=IwAR1D3Zj7OVF6vUB3xtp-htyEZ4Ytu5solKxQ_pmKLYe3wjnYCZkD7pd8XWY

Thoughts everyone?

[IBMMuseum]

On Tuesday, January 14, 2020 at 10:30:46 PM UTC-7, WBSTClarke wrote:
> It makes me wonder if the 8570-x81 and -x61 (similar drives to the 8580-081, -161 and -A16) should be considered to have DBA-SCSI drives, except that the Set Config panel displays would still refer to them like DBA-ESDIs. I guess their onboard electronics directly interface to a bare RLL or whatever HD.
>
> https://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=%2Fcommon%2Fssi%2Frep_ca%2F5%2F897%2FENUS392-265%2Findex.html&request_locale=en
>

> Thoughts everyone?

I had not seen this discussion more than three years ago - and don't know what in the link that WBST was referring to, but the "DBA-SCSI" drives he describes are the 40, 80, and 160Mb with the 80C196KB microcontroller (all ESDI and other DBA-ESDI controllers use an 80C31): https://ibmmuseum.com/Interrupts/INT13h/INT13h1C0B.htm