I need help trying to tftp boot my decstation 5000/200,
I have tried serveral files but I am not able to get a clean boot,
the files have been unzip with the dos verison of gzip (v 1.2.4)

some images seem to begin to load but then the system reboots after the
download.  Any ideas as to what to try next?

The following log is from attempts to boot 


>>> CNFG

 7: KN02-AA  DEC      V5.3t    TCF0  (R3000A 0230cpu with  48 MB memory)
 6: PMAD-AA  DEC      V5.3a    TCF0  (enet: 08-00-2b-2a-81-38)
 5: PMAZ-AA  DEC      V5.3d    TCF0  (SCSI = 7)


****** booting  install.gz

>>boot 6/tftp
?IO: 6/tftp, a.out err (-2)

***** booting install.gecoff.gz

>>boot 6/tftp
993648+2142608+143892

KN02-AA V5.3t    (PC: 0x8010bfd4, SP: 0x8002ff90)

7/prcache                     

                              
**** booting  nfsnetbsd.gz

>>boot 6/tftp
988432+44960+143732

KN02-AA V5.3t    (PC: 0x80106c8c, SP: 0x8002ff90)

7/prcache                     

                              
***** booting diskimage.gz

>>boot 6/tftp
?IO: 6/tftp, a.out err (-2)


***** booting smallnet.ecoff.gz

>>boot 6/tftp
437200+0+32

KN02-AA V5.3t    (PC: 0x80300070, SP: 0x802fff90)

7/prcache