[rescue] Sun 3 with SCSI2SD

[Mike Spooner]

Hi,




I didn't mean a typed OBP command, I meant a SCSI 'INQUIRY' command-packet (code 0x12) issued directly and automatically by the system firmware.




Regards,


- Mike








On Tue, Mar 19, 2019 at 12:38 PM +0000, "Plamen Mihaylov" <plamenspam at afterpeople.com> wrote:










There is no such command, but you can check this using sunos diag.

On Tuesday, March 19, 2019, Mike Spooner  wrote:

> Hi Earl,
>
>
>
>
> I'm only guessing (pre-OBP) but surely the system firmware must issue a
> device-identify command, at least to determine if the SCSI unit concerned
> is a
> disk, tape, scanner, or whatever?
>
>
>
>
> -Mike
>
>
>
>
> On Mon, Mar 18, 2019 at 9:03 PM +0000, "Earl Baugh" 
> wrote:
>
>
>
>
>
>
>
>
>
>
> A couple followups (in response to comments/questions)
>
> 1) The Sun 3/110 is before OBP.  There is no "probe-scsi" command available
> (I wish there was :-) )
> 2) In conversations with a few folks, I think the b waiting for disk
> spinning upb  indicates it finds the SCSI2SD but not the SCSI Id.
> 3) The other message "No Label found, attempting to boot anyway" we think
> indicates that it found an ID but not a "correct" disk set up.
>  (can anybody confirm #2 and 3?)
> 5) The SCSI2SD is a 50 pin unit....
> 4) Overall settings on the SCSI2SD card are :
>
>    - Host Speed
>    - Startup Delay
>    - SCSI Selection Delay
>    - The following check boxes:
>    - Enable Parity
>       - Enable Unit Attention
>       - Enable SCSI2 Mode
>       - Disable glitch filter
>       - Enable disk cache (experimental)
>       - Enable SCSI Disconnect
>       - Response to short SCSI selection pulses
>       - Map LUNS to SCSI IDs
>
> In the setups I've tried the speed has been Normal and Slow (only two
> options), Startup Delay has always been 0, SCSI Selection Delay ( has been
> set to 255 which they say is "auto") and I've had Enable Unit Attention
> check and unchecked.  So I don't think there is any setting equivalent to
> spin up either on first access or poweron.
>
> Not sure how Mike S's comment about "ready response" would map, given this
> is pre OBP.  Mike, any thoughts?
>
> The Individual Disks (the card supports 4 devices) have :
>
>
>    - Check box -- Enable SCSI Target (to enable/disable the various disks)
>    - SCSI ID
>    - Device Type
>    - Quirks Mode
>    - SD card start Sector
>    - Sector size (bytes)
>    - Sector count
>    - Device size (number and units)
>    - Vender
>    - Product ID
>    - Revision
>    - Serial number
>
> This data can be loaded and saved via an XML file.  I've loaded the file
> Walter used on his, so I we match in that
> aspect.
>
> I know there is a later PROM version for the 3/110 than what's on the board
> I have (I have another two 3/110 VME boards)
> so I might try swapping that out, but I don't know of any "known issues"
> with SCSI boards and the current PROM version.
>
> I was also wondering if the DD command I used : sudo dd if=sdcard-sun3+4.dd
> of=/dev/disk2s1
> (on a Mac) needs a block size?   I sent a mail to Walter to ask him how it
> created it... but has anybody duplicated
> an SD card that they have used with a SCSI2SD card?  If so, how exactly did
> you do it?
>
> Thanks.
>
> Earl
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