GXT150M

194-148 IBM POWER GXT150M GRAPHICS ADAPTER (PDF)
The GXT150M, codenamed Neptune, appears in lsdev as nep0.

13W3 to HD15 Adapter

GXT150M
Switch 1 Settings (Frequency only)
AIX 3.2.5 Install


GXT150M (1-E shown) FRU93H1527 P/N 84G8685

J1 100 pin VMC receptacle
J2 13W3 port
SW DIP switch
U5-8 69G1633
U2 69G1635
U3 69G1631
U9 76G9188
U13-16 93G9842
U34 84G8692 BIOS
Y1 12.000 xtal

On the 1-E, there are four more 93G9842 on the reverse of U13-18 for a total of 8. Perhaps this is the difference between the 1-D and the 1-E?

The 1-D might use larger SMD chips for U5-8 and U2,3,9. The PCB suggests that larger chips were used. Teeny tiny legend on the chips, maybe 1/32nd of an inch high.

Interlaced display modes are not supported by these graphics adapters.


13W3 to HDD15 Adapter

Kevin Bowling wrote:
   I use one of these UltraSpec 13W3 M to HD15 F adapters with the GXT150M. Most monitors that can run 1280x1024 should be ok.


SW1 Settings

Display
Type
Screen
Resolution
Refresh
(Hz)
Switch
1 2 3 4
Display
Cable
Display
Mode Sw
6317 Color
6324 Color
6325 Color
9524 Color
9525 Color
1280 x 1024601 0 1 051G7826-
1091-51 Color
POWERdisplay 16S
1280 x 1024721 1 1 109G3539
5081-16 Color1280 x 1024601 1 1 109G3539-
6091-16 Color
POWERdisplay 16
1280 x 102460
77
1 1 1 1
1 1 0 1
09G3539
09G3539
out (1)
in (2)
6091-19 Color1280 x 102460
67
1 1 1 1
1 1 1 0
09G3539
09G3539
2
3
6091-19i Color
POWERdisplay 19
1280 x 102460
77
1 1 1 1
1 1 0 1
09G3539
09G3539
2
-
6091-23 Color1280 x 1024601 1 1 109G3539
POWERdisplay 17
Color
1280 x 102460
77
74
1 1 1 1
1 1 0 1
0 1 1 0
09G3539
Other Displays1280 x 102460
74
0 1 1 1
0 1 1 0
09G3539
09G3539
-
-


AIX 3.2.5 Funnies

Don Ramm wrote:
   The APAR required for the GXT150M is IX42626, so that's where the 42626 came from. However, the PTF number you should look to see if it is installed on your system is U439284. I got that from looking up IX42626 on IBMLink.

Steve Meyer wrote:
   Does anyone know exactly what PTFs are needed to get the GXT150M card to work? We just a new machine in with this card and our standard AIX clone doesn't seem to have the drivers for this card...

I remember wasting more than a week on this one when GXT150Ms had just come out. PTFs won't do it. There's an actual operating system (bos) component you need that shows up now in my system as:
nep.ddx 01.01.02.00  COMMITTED  GXT150M Graphics Adapter DDX
nep.mcx 01.01.02.00   COMMITTED  GXT150M MC/X Extension
nep.vdd 01.01.02.00   COMMITTED  GXT150M Graphics Adapter VDD

As I recall, this code has been on shipments of AIX 3.2.5 since Aug 94, but good luck on finding out WHICH shipments...

Ed Ravin got it to pop:
   I just got X working on a 39H with a GXT150M. First, I installed U439284, then I installed the "nep" drivers (the GXT 150M support files, they can't be installed until you've first installed U439284), then, when it still didn't work, I got the bright idea that maybe the card needs a little initialization at bootup. So I rebooted (with a power off just to make sure -- you never know, especially with IBM), and X came up just fine after that.

"nep" should be on the tape or CD that came with your system -- I found mine on an AIX 3.2.5 bootable CD, but I think I saw it on some of the install tapes too.

Content created and/or collected by:
Louis Ohland, Peter Wendt, William Walsh, David Beem, Tatsuo Sunagawa, Jim Shorney, Tim Clarke, Kevin Bowling, Tomáš Slavotínek, and many others.

Ardent Tool of Capitalism - MAD Edition! is maintained by Tomáš Slavotínek.
Last update: 13 Sep 2021 - Changes & Credits | Legal Info & Contact