25 Mar
2014
25 Mar
'14
5:19 p.m.
All,
I've added a VCB02 card to my MicroVax 2. Right now the VAX is setup with
the following layout...
Slot 1 KA630-A CPU M7606AF
Slot 2 8M RAM M7609-AM
Slot 3 8M RAM M7609-AP
Slot 4 CMD SCSI MSCP encapsulating (top half) empty bottom
Slot 5 M7516-YM (ethernet, top) M7546 for TK-50 (bottom)
Slot 6 VCB02
Slot 7 VCB02 Memory
Slot 8 VCB02 Memory
Per the docs on bitsavers, the VCB02 can go in any QBUS slot 5-8, but the
layouts in the manual are different than what I have setup.
With the VCB02 in there POST takes longer, but the console still comes out
on the serial port. The VCB02 shows 3 red LEDs.
I assume I need to set the addressing on the card, but I have 0 clue what
to do.
--
-Jon
Jonathan Katz, Indianapolis, IN.
26 Mar
26 Mar
6:13 a.m.
Jon,
You didn't say what kind of backplane this is in, but I think there
might be problems either way.
If you have Q-Q-C-D for some (first 3) and Q-Q-Q-Q for the rest, then
slot 4 would be a problem (empty slot causing break in the grant
chain).
There is a diagram here showing the serpentine slot arrangement:
http://hoffmanlabs.org/openvms/hwvax/hwqbus.shtml
If you have Q-Q-C-D for all the slots, then slot 5 would be a problem
(Qbus card in a C-D slot).
On Tue, Mar 25, 2014 at 8:19 PM, Jonathan Katz <jon at jonworld.com> wrote:
All,
I've added a VCB02 card to my MicroVax 2. Right now the VAX is setup with
the following layout...
Slot 1 KA630-A CPU M7606AF
Slot 2 8M RAM M7609-AM
Slot 3 8M RAM M7609-AP
Slot 4 CMD SCSI MSCP encapsulating (top half) empty bottom
^^^^ Maybe a problem if this is a Q-Q slot
Slot 5 M7516-YM (ethernet, top) M7546 for TK-50
(bottom)
^^^^ Maybe a problem if this is a Q-Q-C-D slot
Slot 6 VCB02
Slot 7 VCB02 Memory
Slot 8 VCB02 Memory
-chuck
6:37 a.m.
On Wed, Mar 26, 2014 at 9:13 AM, Charles Dickman <chd at chdickman.com> wrote:
Jon,
You didn't say what kind of backplane this is in, but I think there
might be problems either way.
It's in a BA123.
Slots 1-4 are Q/CD while 5-12 are Q/Q.
Everything has been working fine for a long while (several years) ... I
just added the VCB02 to 6-7-8, that's the only real "change" to the system
in quite some time.
7 a.m.
On 2014-03-25 18:19, Jonathan Katz wrote:
All,
I've added a VCB02 card to my MicroVax 2. Right now the VAX is setup with
the following layout...
Slot 1 KA630-A CPU M7606AF
Slot 2 8M RAM M7609-AM
Slot 3 8M RAM M7609-AP
Slot 4 CMD SCSI MSCP encapsulating (top half) empty bottom
Slot 5 M7516-YM (ethernet, top) M7546 for TK-50 (bottom)
Slot 6 VCB02
Slot 7 VCB02 Memory
Slot 8 VCB02 Memory
Per the docs on bitsavers, the VCB02 can go in any QBUS slot 5-8, but the
layouts in the manual are different than what I have setup.
With the VCB02 in there POST takes longer, but the console still comes out
on the serial port. The VCB02 shows 3 red LEDs.
You have a keyboard on the vcb02?
The right cables?
7:17 a.m.
> Slot 1 KA630-A CPU M7606AF
> Slot 2 8M RAM M7609-AM
> Slot 3 8M RAM M7609-AP
> Slot 4 CMD SCSI MSCP encapsulating (top half) empty bottom
> Slot 5 M7516-YM (ethernet, top) M7546 for TK-50 (bottom)
> Slot 6 VCB02
> Slot 7 VCB02 Memory
> Slot 8 VCB02 Memory
What chassis? BA23? BA123? Something else?
In particular - and this is based on fuzzy memory; I'm sure one of the
people who really knows this stuff will correct me if I'm wrong -
having devices (like Ethernet) that do interrupts after an empty half
won't work unless it's a C/D slot, and I think some but not all of the
possible chasses (chassises?) have C/D on slot 4.
I'm not sure whether that's responsible for what you're seeing; I'm not
sure whether the VCB02 uses interrupts. But it seems possible
(keyboard input and vertical retraces strike me as the most plausible
possible reasons for interrupts).
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27 Mar
27 Mar
5:42 a.m.
Slot 1 KA630-A CPU M7606AF
Slot 2 8M RAM M7609-AM
Slot 3 8M RAM M7609-AP
Slot 4 CMD SCSI MSCP encapsulating (top half) empty bottom
Slot 5 M7516-YM (ethernet, top) M7546 for TK-50 (bottom)
Slot 6 VCB02
Slot 7 VCB02 Memory
Slot 8 VCB02 Memory
What chassis? BA23? BA123? Something else?
BA123 has more slots in general plus
more ABCD slots for quad wide
ram.
BA23 only has two slots after the cpu for quad wide ram (ABCD)
though that is a memory test for me. However in all cases if the
dual width slot is not a CD slot then any AB slot is either occupied or
must have a grant card filling it.
AB slots are Qbus data/address wired where CD are "other".
In particular - and this is based on fuzzy memory;
I'm sure one of the
people who really knows this stuff will correct me if I'm wrong -
having devices (like Ethernet) that do interrupts after an empty half
won't work unless it's a C/D slot, and I think some but not all of the
possible chasses (chassises?) have C/D on slot 4.
OK, Remove VCB for later once an OS is operating.
I need the book (available on line) to know if the first three slots or
is it four
are ABCD, I'll assume first three (CPU and ram) making the next series of
slots ABAB. Below the ram ABCD slots its serpentine and failure to
follow that
breaks the interrupt chain. Note the only exception that must be last
is the
RQDX1 (didn't pass itnerrupts) RqDX2 and RQdx3 did and can be anywhere
in the grant chain.
The ethernet card (all versions) did pass interrupts but card order is a
matter of
performance. Same for serial cards.
Makes that then...
CPU
RAM
RAM
CMD|ETH
next-card|nextcard
Allison
26 Mar
26 Mar
8 a.m.
On Tue, Mar 25, 2014 at 5:19 PM, Jonathan Katz <jon at jonworld.com> wrote:
With the VCB02 in there POST takes longer, but the console still comes out
on the serial port. The VCB02 shows 3 red LEDs.
Do the 3 LEDs on the VCB02 ever change when you first power on the
system, or do all 3 turn on immediately and never change?
According to Table 5-3 VCB02 Light Definitions in this manual:
AZ-GLGAB-MN_VCB02_Technical_Manual_Feb86.pdf
All 3 LEDs should turn on at power up. Then 2 of the LEDs should turn
off when it begins executing the power-up self-tests.
If the 3 LEDs turn on immediately and never change it sounds like it
is never even starting the VCB02 power-up self tests.
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