Re: PROM burning; was Re (2): Boot partition sizes (Was: installing NetBSD on a Sparcstation 2.)

[Dan Oglesby <danno%serverunderground.com@localhost>]

----- Original Message -----
> From: "Dan Oglesby" <danno%serverunderground.com@localhost>
> To: peasthope%shaw.ca@localhost
> Cc: port-sparc%netbsd.org@localhost
> Sent: Tuesday, August 17, 2010 9:07:30 PM
> Subject: Re: PROM burning; was Re (2): Boot partition sizes (Was: installing 
> NetBSD on a Sparcstation 2.)
> ----- Original Message -----
> > From: peasthope%shaw.ca@localhost
> > To: port-sparc%netbsd.org@localhost
> > Cc: peasthope%shaw.ca@localhost
> > Sent: Tuesday, August 17, 2010 6:05:28 PM
> > Subject: PROM burning; was Re (2): Boot partition sizes (Was:
> > installing NetBSD on a Sparcstation 2.)
> > Date: Wed, 18 Aug 2010 01:29:59 +0300 (EEST)
> > From: Al B. "..I'd rather be coding ASM!" <uridium%deviate.fi@localhost>
> > > Cheap ... programmer off fleabay works the magic.
> >
> > My impression is that the chip can be reburned; it's an EEPROM.
> > Correct? Souldn't the old chip be left and a spare chip burned
> > just in case something goes wrong? Seems dicey to hang the fate
> > of the system on a burning process.
> >
> > Thanks, ... Peter E.
> >
> 
> I took the plunge, and ordered an EPROM UV eraser (little box with a
> UV lamp and timer) and a cheap EPROM/EEPROM programmer off of eBay
> tonight. I'm trying to source some cheap AM27C020 EPROM chips for the
> SS2 so I can have backups in case I screw up. The original EPROM with
> the 2.4 version of the firmware isn't much use to me, but it IS better
> than having a totally dead machine.
> 
> 2.9, here we come! :-)
> 
> --Dan

With the help of someone with a known good EPROM programmer, I was able to 
successfully program the 2.9 PROM to a new EPROM and get the SS2 to boot from 
the NetBSD 5.0.2 CD-ROM tonight.

I'll see how the install goes, and give the floppy installation method a try as 
well tomorrow.

All of the stuff I bought on eBay showed up, and once I get a power supply and 
parallel cable figured out, I'll be programming my own EPROMs.

--Dan