Subject: Re: bootrom images?
To: None <email@example.com>
From: Michael Wolfson <firstname.lastname@example.org>
Date: 05/26/2001 15:41:14
At 5:49 PM -0400 5/26/01, you wrote:
:)Based on what just happened with my 425e (see below), I think it really
:)was the ROM revision.
Yeah, that all sounds pretty conclusive. I guess it's true, then, that Rev
A systems can't netboot. Bummer.
One last thought -- what select code is your LAN set to? It should be 21.
I suspect that if it isn't, that might cause it to not netboot.
:)> Hmmm, you're starting to trigger some fuzzy memories in me.
:)Join the club. :-)
:)My box of "HP300 cables" included three (I think, maybe only two)
:)cables with RCA plugs on one end and BNC on the other, obviously
:)commercially made (molded-on strain reliefs). Presumably they were
:)intended for video between a 98544B and a 98786A or equivalent.
Yeah, I had one of those for my 98786A.
:)> "The 948781A is a monochromatic (white) monitor for high resolution
:)> text and graphics applications. It has a built-in speaker, twivel
:)> base, and passive HP-HIL jack.
:)Definitely not what I've got. :-)
Yeah, I've never seen one of those. I do like the phrase "twivel base" tho.
:)98774A, and experiment indicates it handles the video from a 425e,
:)which the 98786A doesn't.
Ah. I'm pretty sure that the 425e mono and color framebuffers run at
1280x1024 at 72 Hz. Very different from 1024x768 at 60 Hz.
:)>> The last board, at the top, has red-and-black handles, in case that
:)>> says anything to anyone.
:)> Got me. But judjing by your total RAM, it must be 1 MB.
:)No, no, there are six green-and-violet boards, and then that
:)red-and-black board in addition. The sticker on it calls it a 98620B,
:)and past messages on the list imply say the 98620B is DMA support.
OK, right. I guess they just had some spare reds and blacks lying around.
Either that or they do have additional color coding for all the DIO-I
boards (which wasn't my experience). Yeah, the 946820B is DMA.
:)> I suspect if you somehow got a larger chassis with more DIO-II slots
:)> and some of those 4 MB RAM cards you could bump up your 330s.
:)The 330s already have one spare slot; they're 4-slot cages, with only
:)three occupied (CPU, human interface, video).
Probably leaving the other for the 4 MB board to get to the max RAM of 8 MB.
:)Well, I have two working HP-IB drives at present, a 7937 and a 7958. I
:)have a second 7958 that seems to have decided to die. (Are the drives
:)in those things compatible with anything else in the known universe?
:)Standard ESDI, for example, or anything like that?)
Yeah, ISTR they might be ESDI, but the HPIB <-> ESDI interface is tuned for
a particular drive geometry. Grab the early port-hp300 mail archives and
grep for ESDI, I think there was a useful post.
By "die" do you mean lots of bad sectors, or mechanical/power supply
problems. I think you've got enough hardware to try to install HPUKES and
mediainit the other drive which will map out all the bad sectors.
:)The 7937 (furrfu, that drive weighs roughly as much as I do!) has a
:)working 1.2 install on it. I'm trying to build a 1.4T kernel there,
:)but it's dog-slow, and 1.2 to 1.4T is a big enough jump that I'm having
Yeah. What do you expect of a 6 MB 68020 with 300 KB/s max drive
throughput. It's hardly in the same league as a 400 MHz G3 (which still
takes ~45 minutes to compile a new kernel).
:)(I tried the kernel off the 1.4.2
:)CD; it fell over with an unexpected-trap failure before it even cleared
:)the screen and printed the copyright notice.)
Could be the bootloader. ISTR that SYS_UBOOT had been updated in that time
:)> Well, remember the 425e doesn't have serial console support in its
:)> BootROM, but NetBSD does start using it once you get the bootloader
:)Where does it appear? Serial port 1? Does it use peecee-"standard"
:)pinout for the serial ports?
I don't know. I've never tried using a 425e. I think it is serial port 1,
normal null-modem cable, 9600 8N1.
:)> And if your 425e has HPIB,
:)I wish. :-( I don't even see anywhere it *could* have HP-IB.
:-( indeed. So I guess it's not like the other series 400 models which
:have a small ribbon cable (20 pin? x ~20 cm) connecting to a small board
:(~8 cm x 5 cm) which has some chips and an HPIB connector that plugs into
:a special slot in the back of the machine.
:):-) First I have to make it boot at all. I'll play with serial
:)connectors a bit more...I have half a dozen DB9-to-DB25 things, all but
:)one of which are ones I made and promptly forgot the details of and
:)probably have one-off pin wiring. I'll play with it....
Hey, be careful if you've got some HP brand DB9 to DB25 connectors -- some
of them are specially wired for the System Interface Board used by the 360
and 370 models.