On 4/19/21 10:01 AM, Maciej W. Rozycki wrote: > On Mon, 19 Apr 2021, Khalid Aziz wrote: > >> On 4/18/21 2:21 PM, Ondrej Zary wrote: >>> >>> Found the 3000763 document here: >>> https://doc.lagout.org/science/0_Computer Science/0_Computer History/old-hardware/buslogic/3000763_PCI_EISA_Wide_SCSI_Tech_Ref_Dec94.pdf >>> >>> There's also 3002593 there: >>> https://doc.lagout.org/science/0_Computer Science/0_Computer History/old-hardware/buslogic/ >>> >> >> Thanks!!! > > Ondrej: Thanks a lot indeed! These documents seem to have the essential > interface details all covered, except for Fast-20 SCSI adapters, which I > guess are a minor modification from the software's point of view. > > Khalid: I have skimmed over these documents and I infer 24-bit addressing > can be verified with any MultiMaster adapter, including ones that do have > 32-bit addressing implemented, by using the legacy Initialize Mailbox HBA > command. That could be used to stop Christoph's recent changes for older > adapter support removal and replace them with proper fixes for whatever > has become broken. Is that something you'd be willing as the driver's > maintainer to look into, or shall I? > Hi Maciej, Do you mean use OpCode 01 (INITIALIZE MAILBOX) to set a 24-bit address for mailbox in place of OpCode 81? Verifying the change would be a challenge. Do you have an old adapter to test it with? If you do, go ahead and make the changes. I will be happy to review. I have only a BT-757 adapter. Thanks, Khalid
