Thanks to Ross Harvey for correcting a problem (1000A booting).

The solution was to install new kernel from 

ftp://ftp.netbsd.org/pub/NetBSD/arch/alpha/misc/

But some problems remain.

I have tested new kernel.
Hard drives are OK, but the following message 
occurs:
isp0: ARQ Failure
And SCSI tape does not work properly.
When I try something like dd, I get:
# dd if=/dev/rst0 of=/dev/null
dd: /dev/rst0: Input/output error
0+0 records in
0+0 records out
0 bytes transferred in 1 secs (0 bytes/sec)

Floppy (DVA0) remains invisible, kernel does not 
recognize it, but it not a trouble.

Boot messages are:

NetBSD 1.3H (GENERIC) #18: Wed Oct 28 13:20:50 PST 1998
    ross@iota.teraflop.com:/usr/src/sys/arch/alpha/compile/GENERIC
AlphaServer 1000A 5/400, 400MHz
8192 byte page size, 1 processor.
real mem = 268435456 (1990656 reserved for PROM, 266444800 used by
NetBSD)
avail mem = 230916096
using 3252 buffers containing 26640384 bytes of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), 21164A (pass 2)
cia0 at mainbus0: DECchip 2117x Core Logic Chipset (ALCOR/ALCOR2), pass
3
cia0: extended capabilities: 21<DWEN,BWEN>
cia0: using BWX for PCI config access
pci0 at cia0 bus 0
pci0: i/o enabled, memory enabled
pceb0 at pci0 dev 7 function 0: Intel 82375EB/SB PCI-EISA Bridge (PCEB)
(rev. 0x05)
ppb0 at pci0 dev 8 function 0: Digital Equipment DECchip 21050 PCI-PCI
Bridge (rev. 0x02)
pci1 at ppb0 bus 2
pci1: i/o enabled, memory enabled
isp0 at pci1 dev 0 function 0
isp0: Board Revision 1020A, loaded F/W Revision 7.55
isp0: Last F/W revision was 5.54
isp0: interrupting at dec_1000a irq 0
scsibus0 at isp0: 16 targets
sd0 at scsibus0 targ 0 lun 0: <DEC, RZ29B    (C) DEC, 0016> SCSI2
0/direct fixed
sd0: 4091MB, 3708 cyl, 20 head, 113 sec, 512 bytes/sect x 8380080
sectors
sd1 at scsibus0 targ 1 lun 0: <DEC, RZ29B    (C) DEC, 0016> SCSI2
0/direct fixed
sd1: 4091MB, 3708 cyl, 20 head, 113 sec, 512 bytes/sect x 8380080
sectors
sd2 at scsibus0 targ 2 lun 0: <DEC, RZ29B    (C) DEC, 0016> SCSI2
0/direct fixed
sd2: 4091MB, 3708 cyl, 20 head, 113 sec, 512 bytes/sect x 8380080
sectors
cd0 at scsibus0 targ 4 lun 0: <DEC, RRD45   (C) DEC, 0436> SCSI2 5/cdrom
removab
le
isp0: ARQ Failure
st0 at scsibus0 targ 5 lun 0: <DEC, TLZ09     (C)DEC, 0167> SCSI2
1/sequential removable
st0: isp0: ARQ Failure
drive empty
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure
vga0 at pci0 dev 11 function 0: Digital Equipment TGA2 (rev. 0x22)
wsdisplay0 at vga0: console (80x25, sun emulation)
de0 at pci0 dev 12 function 0
de0: interrupting at dec_1000a irq 3
de0: DEC DE500-AA 21140A [10-100Mb/s] pass 2.0
de0: address 00:00:f8:04:76:62
de0: enabling 10baseT port
eisa0 at pceb0
eisa0: can't map I/O space for slot 9
isa0 at pceb0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
lpt0 at isa0 port 0x3bc-0x3bf irq 7
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard
psm0 at pckbc0 (aux slot)
wsmouse0 at psm0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
isabeep0 at pcppi0
mcclock0 at isa0 port 0x70-0x71: mc146818 or compatible
wscons: wskbd0 glued to wsdisplay0 (console)
root on sd2a dumps on sd2b
de0: enabling Full Duplex 100baseTX port
root file system type: ffs
de0: link down: cable problem?
isp0: ARQ Failure
de0: enabling 10baseT port
/dev/sd0a: file system not clean (fs_flags=0); please fsck(8)
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure
isp0: ARQ Failure