Uses the same Adapter ID and ADF as IBM's MFM (and ESDI?) adapters. "The POS register implementation is identical to that of the IBM MFM controller."
INSTESDI.EXE Install utility for the ACB-2620
Adaptec ACB-2600 Series OEM Manual
Adaptec ACB-2610 MFM Adaptec ACB-2620 ESDI
Adaptec ACB-2610 MFM
Adaptec ACB-2620 ESDI
Appears to be the same board as ACB-2610, minus the AIC6225 and AIC250 parts.
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Ardent Tool of Capitalism - MAD Edition! is maintained by Tomáš Slavotínek. Last update: 03 Dec 2023 - Changelog | Legal Info & Contact