I know that IIfx RAM must be installed in groups of four. But do all four have to be the SAME size? If not, I could test the sticks one at a time. If so, I'll have to assume all are bad and give up.

I realize this is an arcane question, but I bet there is someone in this group who knows. I'm reluctant to try without good authority.

/Mr Lynn

If you have them in Bank B, you need to put them in Bank A (in the back closest to the ports) according to my IIfx era MacConnection SIMM installation guide the larger SIMMS MUST be in Bank A, which must ALWAYS have 4 SIMMs installed.

I hope this helps, how's the HDD problem? I've got a stack of IIfx's if you need a new mobo or some such. Email me at the .mac version of the addy that I share with trash!

jt

P.S. Do you have, or know somebody with a LaserWriter to test them in to see if it's the fx mobo or even a speed issue?

Seems to me I did try the back bank yesterday, but without anything in Bank B--should that make a difference? The machine seemed to stall, so I switched banks and got the Chimes of Death.

And, with the four 1MBs in bank B, it's showing a whopping 70MB of RAM! That's booted from an emergency floppy with a basic System 7.1 on it. One odd thing, though: The 'About' box shows the System taking c. 64MB, leaving only 6MB unused. I'm assuming this is some artifact of booting from the floppy, but it is weird.

So encouraged, I connected the HD again, the drive still doesn't spin up and refuses to boot, even from the floppy. The monitor lights up and just sits there--no pointer, no sad Mac, nothing.

I'd hate to lose this drive, as it's got the System folder I spent many days configuring for my Dayna network card (see the story on the website), not backed up, of course.

But if it's dead, got any?

/Mr Lynn

The dinosaurs became extinct because they didn’t have a space program.
--Larry Niven

quote:

---

And, with the four 1MBs in bank B, it's showing a whopping 70MB of RAM! That's booted from an emergency floppy with a basic System 7.1 on it. One odd thing, though: The 'About' box shows the System taking c. 64MB, leaving only 6MB unused. I'm assuming this is some artifact of booting from the floppy, but it is weird.

---

Edited by - alcoa on 15 Dec 2002 20:02:21

quote:

---

I take it you have four1.5 MB SIMMs in Bank B? 70MB seems weird!

---

The dinosaurs became extinct because they didn’t have a space program.
--Larry Niven

quote:

---

quote:

---

I take it you have four1.5 MB SIMMs in Bank B? 70MB seems weird!

---

Actually it was 69 and change total, 64 and change used by System, I think. There are four 1MB SIMMS in bank B.

---

69,632 kilobytes sounds about right then, but that's a lot more than 400k shy of 70 MB!

quote:

---

Come to think of it, I did change it to 24-bit addressing when trying to find the HD with Silverlining.

---

That figures!

quote:

---

Yes, this has eaten into my weekend. No time even to play with my new (well, refurb) TiBook!

---

You didn't seem to be having much luck, sounds like a good time to quit for a while!

quote:

---

BTW, do those mobos of yours have any >1MB RAM on them?

---

I have some 4 MB SIMMs, but not enough to spare any, I don't think I have enough to get two boxes up to 32 MB, dunno, haven't played with them in months

quote:

---

PS You know, I never realized until now that 'jt' appears in more than one guise on these boards. . . . Why 'alcoa'?

---

It was a play on something cinemo said way back when my cookie/password went AWOL for several days at the same time ~coxy did. I registered then and I've been posting from iCab as alcoa periodically and whenever I'm away from my main machine on dialup. Since the banners started blowing up NN 4.73 I've been using iCab, so I'm in alcoa mode again at least until I have time to set up a new drive.

jt

Edited by - alcoa on 15 Dec 2002 23:48:47

68k Macintosh Liberation Army Forums

© 2001-2003 68kMLA