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Not that I need them: More IBMs coming.

The 77 continues to not boot with the SCSI hard drive plugged in (does RAM count, then just hangs, does NOT scan floppies,) and with the SCSI hard drive unplugged, it gets I9990021. It does scan the floppy drives, but even with a Diagnostic or Reference disk in, it doesn't boot.

After swapping the CPU on the 90, it does the exact same thing. Aaaargh! (Does RAM count then hang when hard drive is plugged in, never even scanning the floppy drive; and I9990021 with hard drives unplugged, scanning floppy drive but not booting from any disk.)

And I just got my 10-pack of 2.88 MB "ED" disks! (Apparently brand new, from Windsor Group, $5 plus $6.95 shipping, arrived fast.)

The PS/1 works great.

The newer ones work fine.
 
EddieDX4 said:
...Are Model 95 complexes interchangeable with 90's? If so, which ones? I have 2 I found in a box, which I had leftover from my 95 days (long gone now), and I was wondering if they could work as donors for the 90... One of them is a Type 3 (I believe) DX/50 (it has that daughterboard thing, so it might be too big).

I also have an older one that was originally an SX/25, upgraded to DX/2 50 (this is the one that a few weeks ago I though was a 487SX/2, but based on the part number ended up being a 486DX/2 in the 487SX socket).
Click to expand...

All of the Type 0 to Type 4 processor complexes work in the Model 90s. A little background is necessary. There are 8590 and 9590 versions.

The 8590 had two DBA ESDI hard drive connections (apparently a design relic, which may be only operational with a Type 0 complex) and XGA video on the planar. Gray PS/2 badge on the front. T0 through T2 complex as stock. The stock floppy drive is 1.44Mb.

The 9590 removed the DBA ESDI connectors, but otherwise the planar is identical. XGA-2 video card added in. Blue badge. 2.88Mb floppy drive. T3 or T4 complex.

On the Model 95 there was also 8595, 9595, and 9595A (for a RAID Array of hard drives). The 8595 was a different planar than the 9595 level. 8595 planars can run T0 to T4 complexes. 9595-level planars (also in the larger Server 500) can only run T4 complexes (486DX2-66, P60, P66, and P90).

8595 = 1.44Mb floppy and 9595 = 2.88Mb floppy is still true...

Complex identification

Hope that answers the question...
 
IBMMuseum said:
All of the Type 0 to Type 4 processor complexes work in the Model 90s. A little background is necessary. There are 8590 and 9590 versions.

The 8590 had two DBA ESDI hard drive connections (apparently a design relic, which may be only operational with a Type 0 complex) and XGA video on the planar. Gray PS/2 badge on the front. T0 through T2 complex as stock. The stock floppy drive is 1.44Mb.

The 9590 removed the DBA ESDI connectors, but otherwise the planar is identical. XGA-2 video card added in. Blue badge. 2.88Mb floppy drive. T3 or T4 complex.

On the Model 95 there was also 8595, 9595, and 9595A (for a RAID Array of hard drives). The 8595 was a different planar than the 9595 level. 8595 planars can run T0 to T4 complexes. 9595-level planars (also in the larger Server 500) can only run T4 complexes (486DX2-66, P60, P66, and P90).

8595 = 1.44Mb floppy and 9595 = 2.88Mb floppy is still true...

Complex identification

Hope that answers the question...
Click to expand...

Thank you for the information! My 8595 had a 2.88 floppy drive, which I'm sure was added by the original owner (unless it was an option).

The complex I have is a Type 3 DX50. Will this work? I ask because it's a bit of a behemoth compared to other complexes.

Anonymous, you still looking for a new home for the 90?
 
EddieDX4 said:
...My 8595 had a 2.88 floppy drive, which I'm sure was added by the original owner (unless it was an option)...
Click to expand...

The 85xx-level systems (this also includes the 8556/8557) should have 1.44Mb drives stock, but can be upgraded (as long as it is the correct drive) to a 2.88Mb floppy if there is a 95xx version of the system...

EddieDX4 said:
...The complex I have is a Type 3 DX50. Will this work? I ask because it's a bit of a behemoth compared to other complexes...
Click to expand...

The Type 3 (also referred to as the 'M', for denoting the 486DX-50 on the complex) is tight, but works with the 8590/9590/8595 planars (unlike all of the other complex T1, T2, and T4 complex levels, there is only one version of the T3; The T0 is not normally considered, because it is a very rare 386DX-20 complex). It is L2 cache on the daughtercard. Did you see the T3 page?: http://ibmmuseum.com/ohlandl/complexes/Type3.html
 
IBMMuseum said:
The 85xx-level systems (this also includes the 8556/8557) should have 1.44Mb drives stock, but can be upgraded (as long as it is the correct drive) to a 2.88Mb floppy if there is a 95xx version of the system...



The Type 3 (also referred to as the 'M', for denoting the 486DX-50 on the complex) is tight, but works with the 8590/9590/8595 planars (unlike all of the other complex T1, T2, and T4 complex levels, there is only one version of the T3; The T0 is not normally considered, because it is a very rare 386DX-20 complex). It is L2 cache on the daughtercard. Did you see the T3 page?: http://ibmmuseum.com/ohlandl/complexes/Type3.html
Click to expand...

As always, very much appreciate the knowledge sharing! You're an invaluable resource to the forums, and in particular relating to one of the most awesome (if not THE most) series of machines ever built.

Thank you!
 
Oddly enough, when a Type 3 complex is in a Model 90 or 95, that system is considered at the 95xx level. Despite the fact that it would use the older planar (again, the 9595 planar can only run a T4 complex, not the T0 through T3). Here's how the models that had a possible 95xx level were defined:

Model 33 with 486SLC2 CPU planar: All were 9533

Model 35 or 40 with 386SX or 386SLC CPU planar: 8535 or 8540
Model 35 or 40 with 486SLC2 CPU planar (very rare): 9535 or 9540

Model 56 or 57 with 386SX or 386SLC CPU planar: 8556 or 8557
Model 56 or 57 with 486SLC2 or 486SLC3 CPU planar: 9556 or 9557

Model 76 or 77 with 486 or 486POD CPU planar: All were 9576 or 9577
There are solderpads on one of the planar versions for an IBM 486DLC2 CPU, was this going to be the 8576/8577?

Model 85, two separate versions with 486 or 486POD CPU planars: All were 9585

Model 90 or 95 with T0, T1, or T2 complex, 386 or 486 CPU: 8590 or 8595
Model 90 or 95 with T3 or T4 complex, 486 or Pentium CPU: 9590 or 9595
Model 95 with T4 complex, 486 or Pentium CPU, and RAID array: 9595A
 
EddieDX4 said:
Excellent breakdown!

Anonymous, if you decide to offload the 90, please let me know. :)
Click to expand...

I'll probably mess with it a little longer first. By the end of the weekend I'll know if I want to keep it or pawn it off.

P.S., I'll likely be in the Puget Sound area this weekend. Unfortunately, I won't know if I'm keeping the 90 until after I get back...

Going to go watch the Portland Timbers U-23 blow away the Kitsap Pumas in the PDL soccer playoffs in Bremerton. (Well, first they have to beat the Hollywood Hitmen on Saturday, then on Sunday they'll play the winner of the also-on-Saturday Ventura County Fusion vs. Kitsap Pumas match, which is likely to be Kitsap.)
 
Anonymous Freak said:
I'll probably mess with it a little longer first. By the end of the weekend I'll know if I want to keep it or pawn it off.
Click to expand...

Understandable. I'm sure it will have a good loving home either way. :-D

Anonymous Freak said:
P.S., I'll likely be in the Puget Sound area this weekend. Unfortunately, I won't know if I'm keeping the 90 until after I get back...

Going to go watch the Portland Timbers U-23 blow away the Kitsap Pumas in the PDL soccer playoffs in Bremerton. (Well, first they have to beat the Hollywood Hitmen on Saturday, then on Sunday they'll play the winner of the also-on-Saturday Ventura County Fusion vs. Kitsap Pumas match, which is likely to be Kitsap.)
Click to expand...

Well, since I'm not fond of Kitsap, and I don't exactly follow any local leagues.... Blow away, Timbers... Blow away. ;)
 
I'm in Portland, Oregon; a bit more than an hour away.

It's agonizing; I have it *SO* close to working that I want to keep it, yet it's not quite fully working yet. Exactly the state I *HATE*. Dead is dead; easy to justify getting rid of. But "boots but not all the way" is aggravating.
 
Anonymous Freak said:
I'm in Portland, Oregon; a bit more than an hour away.

It's agonizing; I have it *SO* close to working that I want to keep it, yet it's not quite fully working yet. Exactly the state I *HATE*. Dead is dead; easy to justify getting rid of. But "boots but not all the way" is aggravating.
Click to expand...


I'm from there originally and have family in the area. Let me know if you decide to dump it, I'm usually down there a couple times a year and would grab it to save it from the scrapper.
 
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