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DS20 confusion

Hey folks,

I recently got an unexpectedly big delivery of AlphaServer DS20 machines
(while I expected something like an alpha station DS10). The machines were
not quite in working order - I'm trying to puzzle them back into shape,
but they are confusing beasts. Maybe someone here has a similar working
machine and can give some hints?

First thing is SCSI confusion. They have an "internal" StorageWorks shelf,
connected apparently via scsi over a small repeater. The cable from the 
repeater was not connected. The connector is a bit strange, but the mainboard
has two matching jacks labeled SCSI bus A and SCSI bus B. So I connected it
to scsi a, but it does not show up anywhere. The schematics on the downside
of the top cover seems to imply that it should run to some pci card - which
I don't have.

I aquired a usable single channel scsi card and connected the other scsi
cable (with standard 50 pin connector) to it, and this makes the CD drive
show up in firmware.

I also have a card that apparently should connect to an extern storage works
shelf (which I also have), but this is not seen by firmware either.

I added a few pci network cards, just for testing (and maybe mounting
root on nfs while I can't get a disk working).

 ID       Program      Device       Pass  Hard/Soft Bytes Written  Bytes Read  
-------- ------------ ------------ ------ --------- ------------- -------------
00000001         idle system            0    0    0             0             0
P00>>>show config
                        AlphaServer DS20 500 MHz

SRM Console:    V5.7-8
PALcode:        OpenVMS PALcode V1.79-60, Tru64 UNIX PALcode V1.72-59

CPU 0           Alpha 21264-4 500 MHz   SROM Revision: V1.82
                Bcache size: 4 MB

Core Logic
Cchip           DECchip 21272-CA Rev 2.1
Dchip           DECchip 21272-DA Rev 2.0
Pchip 0         DECchip 21272-EA Rev 2.2
Pchip 1         DECchip 21272-EA Rev 2.2

TIG             Rev 4.14
Arbiter         Rev 2.10 (0x1)


Array #       Size     Base Addr
-------    ----------  ---------
   0         512 MB    000000000
   1         512 MB    020000000

Total Bad Pages = 0
Total Good Memory = 1024 MBytes

PCI Hose 00
     Bus 00  Slot 05/0: Cypress 82C693
                                                         Bridge to Bus 1, ISA
     Bus 00  Slot 05/1: Cypress 82C693 IDE
     Bus 00  Slot 05/2: Cypress 82C693 IDE
     Bus 00  Slot 05/3: Cypress 82C693 USB
     Bus 00  Slot 08: QLogic ISP10x0
                                   pka0.          SCSI Bus ID 7       
                                   dka500.         RRD47               

PCI Hose 01
     Bus 00  Slot 07: 10048086/10048086
     Bus 00  Slot 08: DEC PCI MC
                                                         Rev: 24, mca0       

Slot    Device  Name            Type         Enabled  BaseAddr  IRQ     DMA
        0       MOUSE           Embedded        Yes     60      12      
        1       KBD             Embedded        Yes     60      1       
        2       COM1            Embedded        Yes     3f8     4       
        3       COM2            Embedded        Yes     2f8     3       
        4       LPT1            Embedded        Yes     3bc     7       
        5       FLOPPY          Embedded        Yes     3f0     6       2

P00>>>boot dka500
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013                       
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993           
    The Regents of the University of California.  All rights reserved.
NetBSD 6.99.23 (INSTALL) #0: Tue Aug 13 15:36:54 UTC 2013
AlphaServer DS20 500 MHz, s/n AY94910150        
8192 byte page size, 1 processor.       
total memory = 1024 MB           
(2712 KB reserved for PROM, 1021 MB used by NetBSD)
avail memory = 996 MB                              
mainbus0 (root)      
cpu0 at mainbus0: ID 0 (primary), 21264-4
cpu0: Architecture extensions: 0x303<PAT,MVI,FIX,BWX>
tsc0 at mainbus0: 21272 Core Logic Chipset, Cchip rev 0
tsc0: 8 Dchips, 2 memory buses of 32 bytes             
tsc0: arrays present: 512MB, 512MB, 0MB, 0MB, Dchip 0 rev 1
tsp0 at tsc0                                               
pci0 at tsp0 bus 0
sio0 at pci0 dev 5 function 0: vendor 0x1080 product 0xc693 (rev. 0x00)
cypide0 at pci0 dev 5 function 1: Cypress 82C693 IDE Controller (rev. 0x00)
cypide0: primary channel wired to compatibility mode                       
cypide0: primary channel interrupting at isa irq 14 
atabus0 at cypide0 channel 0                       
cypide1 at pci0 dev 5 function 2: Cypress 82C693 IDE Controller (rev. 0x00)
cypide1: hardware does not support DMA                                     
cypide1: primary channel wired to compatibility mode
cypide1: secondary channel interrupting at isa irq 15
atabus1 at cypide1 channel 0                         
vendor 0x1080 product 0xc693 (USB serial bus, interface 0x10) at pci0 dev 5 
function 3 not configured
isp0 at pci0 dev 8 function 0: QLogic 1020 Fast Wide SCSI HBA
isp0: interrupting at dec 6600 irq 27                        
isa0 at sio0                         
lpt0 at isa0 port 0x3bc-0x3bf irq 7
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com0: console                                              
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64                              
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
mcclock0 at isa0 port 0x70-0x71: mc146818 compatible time-of-day clock
tsp1 at tsc0                                                          
pci1 at tsp1 bus 0
wm0 at pci1 dev 7 function 0: Intel i82543GC 1000BASE-T Ethernet (rev. 0x02)
wm0: interrupting at dec 6600 irq 47                                        
wm0: Ethernet address 00:03:47:25:42:14
makphy0 at wm0 phy 1: Marvell 88E1000 Gigabit PHY, rev. 2
makphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto
vendor 0x1011 product 0x0018 (miscellaneous network, revision 0x24) at pci1 dev 
8 function 0 not configured
scsibus0 at isp0: 16 targets, 8 luns per target
scsibus0: waiting 2 seconds for devices to settle...
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec 
cd0 at scsibus0 target 5 lun 0: <DEC, RRD47   (C) DEC, 1206> cdrom removable
cd0: sync (100.00ns offset 8), 8-bit (10.000MB/s) transfers                 

Is the DEC "miscellaneous network" device the external storage works
connector card? I can not find any traces of USB, so I guess that is an
error in the pcidevs of that (slightly old) NetBSD version and it actually
is the CONTAQ 82C693 PCI-ISA Bridge.

I guess I should continue hunting for the "right" scsi pci card which can
connect both the storage works repeater and the CD drives scsi bus, or add
another internal scsi disk at the first bus behind the CD drive (there is
space and connectors left).

Can I use some kind of adapter to connect the scsi repeater to a stock
50 pin pci card?

Thanks for any hints,


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