187-054 The IBM PS/2 Display
Adapter, PS/2 Display Adapter 8514/A and The PS/2 8514
Memory Expansion Kit
Source: "Harnessing the 8514/A," MIPS, January 1990,
page 88 and 91
I'm not going to waste time scanning this. All chips
are NEC D41264C-12.
Looking for Better Color?
This entire segment is from snide comments uttered by Peter Wendt on the PS/2 newsgroup
enable/disable jumper on the 8514-card.
On the left there's a blue connector (one
of 4) between the two cards. To the right is a small
silver square - the crystal oscillator. Just right to
this oscillator is the jumper visible. It consists out
of three pins. To activate the additional memory it must
cover the middle pin and the left (to the oscillator).
The right pin must be free and visible. Ed. Memory installed,
jumper pins towards J1, memory not installed, jumper
pins towards J2.
If it is set this way and if diagnostic doesn't give any error ... hmm ... it is probably not supported from the board. To change the setting of this jumper you will have to separate the daughter-board from the 8514A-base card. Not easy, watch out not to damage the connectors.
Was 8514/A For?
The disadvantage is the low vertical
refresh rate of 43.5Hz (which IBM euphemistically called
"88Hz Interlaced Mode"). Very flickery.
"8514" standard includes a particular API
(Application Programming Interface), which loads with
the operating systems and enables application to use the
cards graphic processor. This now supports line-draw,
fill-patterns, polygons etc. - whatever vectorized
graphic needs ... like for example AutoCad.
You *might* use the card - but if you are
used to XGA- or XGA-2 or SVGA you will find it rather
limited and causing pain in the eyes on the longer
BTW: it has no native text- or low-resolution graphics mode. It is a AVE-card - means: it uses the Auxiliary Video Extension on the MCA-bus and "vampirizes" the Base Video system (VGA or XGA) to display text and 640x480 graphics. It is not a "stand-alone" video-card, it always needs a base-video to co-exist with.
If your 8514 card has the memory filled on the
daughtercard, it has 1.5 MB of memory and will run 256
colours, if those memory sockets are empty it has 0.5 MB
and will run 16 colours at that specification.
All early PS/2s have VGA on the
motherboard. Accordingly, when that card is
installed and you're running VGA, it's generated on the
MB and the card is just passing it through to the
monitor. It would seem that the card is capable of
Obviously you can run a third party
monitor that'll run 43.5Hz with an 8514 card. The
thing to do, though, is get an IBM 8514 monitor and run
_it with that card. They're running at from $5 or
$15, that's for a very nice 16" monitor running 1024 X
768, now they're giving away 16" 1024 X 768
monitors, can you imagine. 8514 being a standard,
every OS has drivers, I think. I've run 8514 with
an IBM 8514 monitor for 10 years now. It runs very
I dunno, I've never run anything else
except VGA, 8514 is 1987 technology and it might be slow
for some things or something, but I haven't seen
anything like that at all. I've seen it said that
43.5 Hz is slow enough, that some individuals' eyes are
fine enough, that they see the refresh, perhaps under
flourescent lights, bothering them intolerably.
I'm talking about home use, not a professional
multimedia movie shop here, the latter knows to use a
hot Turtle Beach card and never mind this baloney.
I do know that, um, third party interests
badmouthed 8514 to promote SVGA, a horrid non-standard,
and sell a hundred million SVGA adapters and
monitors. That's when that came about.
That's called electronic publishing.
An IBM 8514 monitor also runs XGA and XGA-2, both newer 1024 X 768 video standards. OK then, 8514/A adapters are capable of 8514, a slightly older 1024 X 768 standard that works very well indeed.
When I connect the monitor to onboard-VGA I can get 640x480 in 16 colors vhich is O.K with 256kB display memory.If I connect the monitor with 8514/a card I get again only 16 colors.1 MB display memory should get me at least 256 colors on 640x480.The jumper on 8514/a card is correctly set.The ADF file of 8514/a is installed.
Every (early) PS/2 generates 16 colour VGA using 256K on the _planar. When you connect your monitor to the 8514 adapter and run VGA, that VGA is generated on the planar and the 8514 adapter simply passes that through to the monitor. That's why you're getting only VGA with 16 colours no matter what you do with the 8514 adapter.
I don't know the 8512 monitor and assume it's VGA.
Offhand, you can do one of two
things. First, you could run VGA. Then you
might as well take out the 8514 adapter because it isn't
doing anything, and connect the monitor to the
Second and best, you could get an 8514
monitor, install the 8514 drivers and run the system on
the 8514 adapter with 1024 X 768, 256 colours.
8514/A Display Adapter/A -
Explanation of 8514/A functionality
When the system is running applications in VGA mode (or
lesser resolutions) the 8514/A card simply passes the
VGA information from the motherboard VGA controller
through the Auxilliary Video Extension (AVE). When
applications require high resolution, a TSR program
called HDILOAD (provided with the adapter) installs the
8514/A Adapter Interface (AI) code. The 8514/A AI is
basically a gateway to the 8514/A adapter. Since IBM
never published the hardware register information for
the 8514/A, all applications had to write to the AI,
which in turn writes directly to the hardware on the
card. The 8514/A can not function unless it has a video
system to supply VGA mode (and lower) video signals.
Error Code / Adapter RAM-Module replacement
The 8514 does not have the sync circuitry to do horizontal deflection at 35khz. Although it may be fudged a bit, if you're willing. It's happy only at 31.5khz/60hz/70hz (VGA/XGA), and 38khz/43.5hz interlaced (IIRC).
Both XGA and XGA-2 adapters run an IBM 8514 monitor very nicely at 1024 X 768 at 43.5Hz (I) - according to the 8514-specs and according to the values passed in XGA$DMQS for the XGA-2.
The 8514 monitor will fall out of sync at 800 x 600. It is not specified for this resolution. I tried that .. and the monitor made a fuzzy picture (coloured lines) for about 20 seconds before the power supply shut down. Takes him about 2 minutes to recover before it could be used at normal modes again.
Horizontal and Vertical Frequencies
used by the 8514/A Monitor
Maximum recommended pel (dot clock) rate: 46.5
V+ H+ = 350 line mode
Going back the other way, there are 4 ID lines from the monitor to the video card. Monitor type is signalled by various combinations of signals on these lines: 0 (ground), 1 (5V), H (Horizontal sync) and V (Vertical sync).
8514 = ID bits 1010
If you wish, I can go into detail on the exact timing
specs for sync and video signals- blanking, sync width,
front / back porch etc.
If you installed and used the 8514/A adapter before adding the memory expansion option, you will have to run the adapter interface installation program again in order to use the additional memory. In addition, there were several revisions to the 8514/A adapter. The original version of the 8514/A adapter used 16K of system ROM. The revised 8514/A adapter used 8K of system ROM, and is identified with an assembly number of 07F2519 on the adapter. The memory daughter card for the revised 8514/A adapter is identified with a part number of 38F4042. Both versions of the 8514/A adapter share the same FRU P/N pf 1887971. The memory daughter cards of the 8514/A adapter are not interchangeable.
Individual modules from a daughter card can be interchanged. It is possible to configure the revised 8514/A adapter with the older version of the option diskette. If this occurs, the revised 8514/A adapter will continue to use 16K of system ROM.
Adjust Focus For Use With XGA-2 Card
>I'm trying to get an 8514 to work on my 8595 with xga2 but it seems to be out of focus. Is there an internal adjustment to sort this out ?
From Mike McKean Sr.
Power Supply Components
Warning! High Voltages exist within monitors! I take NO responsibility for ANY of your actions if YOU open the case! For the cost of an 8514 monitor, throw it away and get another.
The following is for educational purposes only! If you do not know how to safely work on high voltage devices, this IS NOT the place to start! High voltages are not tolerant of mistakes. They do not "understand" that you are curious, or that you'd never do THAT again....
C825 47uf 16v
Replace all those in the power supply, and you'll
almost never have another problem with an 8514.
The power supplies were the weakest part of them.
Results of Rapid Mode Switching
One of my team mates killed his 8514 by switching between DOS fullscreen and 1024 Win 3.1 resolution during editing a text file .... [switch] clickety-click - DOS [switch] clickety-clack-whirrr - Windows [switch] clickety-click - DOS [switch] WHACK ... flash on the screen ... Power LED went dark - monitor gone.
Comes over to my desk and asked me what went wrong. We disassembled the monitor (early models with security TORX) and found the main switching transistor in the power supply blown. Took us about 2 hours to get it fixed - and the monitor never was the same again it was before. Showed tendencies to start "oscillating" when the background changes from white to black and back again. Took the monitor about 10 seconds until the picture came to rest again.