VAX4000 VLC diagnostics/console
cube1 at charter.net
Sat Sep 4 10:02:11 CDT 2021
On 9/4/2021 5:44 AM, Adrian Graham wrote:
>> On 4 Sep 2021, at 02:42, Jay Jaeger via cctalk <cctalk at classiccmp.org
>> <mailto:cctalk at classiccmp.org>> wrote:
>> On 7/14/2021 12:32 PM, Adrian Graham via cctalk wrote:
>>> VT100 to the rescue, the VLC is fine talking to it so now I'm
>>> wondering why
>>> my old faithful hardware UART in this PC I'm typing on now has let me
>>> The BlueSCSI appears as 7 devices though, which is usually a
>>> termination or
>>> ID problem so I now need to dig out an external terminator for the box
>>> since it's never had one. The hard drive in there has been good at
>>> providing its own TERMPWR which the BlueSCSI should too but I'll play by
>>> the rules to test things properly.
>> I think BlueSCSI will only appear as the devices you have image files
>> named for on its SD card.
> What I meant was on a SHO DEV I got 7 Quantum Fireballs (DKA0-500,
> DKA700), in my VAX days this meant there was either an ID conflict with
> another device on the bus or a termination issue. I only had one image
> on the sdcard which was ID0 so there weren’t any other devices present,
> so it had to be a termination issue.
Or a bug.
I don't think that these boards will *provide* terminator power, but I
haven't looked at the schematics carefully. If the VAX does provide
terminator power, it might not be enough to both do that and power the
blue pill. I power mine from the 4 pin molex drive power connector by
using a 4 pin molex to Berg connector adapter to match the connector on
the one on the BlueSCSI board.
BTW, a caveat: There is a "Black Pill" version from Tech By Androda out
there. The blue.scsi site that points to it indicates that BlueSCSI is
open source (which it is), but THAT one, the one I bought from Tech By
Androda IS NOT OPEN SOURCE. He won't provide the code. Not even
binaries on his web site. (There IS a warning about that on the page
for the Black Pill (F4) version.)
Also, I see that version 1.0c of the open source Blue Pill version has
a fix that involves TERMPOWER: "Fixed issue with external power and
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