Apple Pc Compatibility Card Service Manual
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Service Source
PC Compatibility Cards
7" 100 MHz Card, 12" 100 MHz Card,
12" 166-P Card, and 12" PR166 Card
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Basics
PC Compatibility Cards
Basics Overview - 1
Overview
The PC compatibility cards are for use with Power
Macintosh models having peripheral component interface
(PCI) expansion slots. They allow MS-DOS and Windows
applications to run directly on a Power Macintosh computer.
There are several types of Apple PC Compatibility cards, and
installation procedures differ for each:
• 12-inch 100 MHz card: features a 100-MHz Pentium
processor
• 7-inch 100-MHz card: features a 100 MHz 5x86
processor
• 12-inch 166 MHz-P card: features a 166 MHz Pentium
processor
• 12-inch PR166 card: features a 166 performance rated
(PR) 6x86 processor
Basics Overview - 2
With each of these cards, the PowerPC processor operates
independently of the processor on the PC Compatibility Card
so that Macintosh and MS-DOS or Windows applications can
run concurrently.
Basics General Compatibility Information - 3
General Compatibility Information
The original 100 MHz PC compatibility cards (7-inch and
12-inch) are compatible with the following software and
equipment:
• Microsoft MS-DOS 6.22
• Windows 3.1
• Windows for Workgroups 3.11
• Windows 95 (
• Sound Blaster-16
• Apple displays
• Most third-party VGA and SVGA displays
• Power Macintosh 5400, 6400 (7-inch card only),
7200, 7500, 7600, 8500, and 9500 series computers
not
compatible with WindowNT or OS/2)
Basics General Compatibility Information - 4
The 166 MHz-P and PR166 cards are compatible with the
following software and equipment:
• Microsoft MS-DOS 6.22
• Windows 3.1
• Windows for Workgroups 3.11
• Windows 95 (
• Sound Blaster-16
• Apple displays
• Most third-party VGA and SVGA displays
The 166 MHz-P card is compatible with the Power
Macintosh 4400, 7220, 7200, 7300, 7500, 7600, 8500,
8600, 9500, and 9600 series computers, while the PR166
card is
200 and 7220/200 (Far East only) computers.
only
not
compatible with WindowNT or OS/2)
compatible with the Power Macintosh 4400/
Basics Adding Memory - 5
Adding Memory
All Apple PC compatibility cards offer a single DRAM
expansion slot. You can install an 8, 16, 32 or 64 MB DRAM
DIMM in the expansion slot for a maximum memory
configuration of:
• 100 MHz 7-Inch Card: 64 MB (no soldered DRAM)
• 100 MHz 12-Inch Card: 72 MB (8 MB of soldered
DRAM)
• 166 MHz-P 12-Inch Card: 80 MB (16 MB of soldered
DRAM)
• PR166 12-Inch Card: 80 MB (16 MB of soldered DRAM)
Basics Adding Memory - 6
Memory for 100 MHz Cards
The original 100 MHz PC compatibility cards use JEDECstandard 168-pin DIMM DRAM cards. The DIMMs should be
64-bit-wide, 168-pin fast-paged mode (FPM) with a 70ns
access time or faster. DIMMs built with extended data-out
(EDO) DRAMs are not supported.
The 100 MHz 12-inch and 7-inch PC compatibility cards
support only symmetrical DIMMs with a 2K refresh rate.
DIMMs incorporating 4K refresh parts are not supported on
the 7-inch PC compatibility card.
Memory for 166 MHz-P and PR166 Cards
The 166 MHz-P and PR166 PC compatibility cards use
168-pin, 60ns or faster, fast-page mode, 64-bit wide,
5 V DRAM DIMMs.
Basics External PC-Formatted SCSI Devices - 7
External PC-Formatted SCSI Devices
If you use a dedicated PC-formatted partition or SCSI device
instead of a drive container, you may experience some disk
read/write errors. Apple recommends using drive
containers on Macintosh-formatted partitions or SCSI
devices as your primary method of data storage.
Joystick Port Channels
Customers can hook up the enhanced joysticks that are
becoming more common (such as, FlightStick Pro, Wingman
Extreme, and so on). The joystick port supports both A and B
channel, so the enhanced joysticks should work.
Basics Printing - 8
Printing
LaserWriter Select 300 and Personal
LaserWriter 300 Printers
The LaserWriter Select 300 and Personal LaserWriter 300
printers are not fully supported. Files printed in the PC
environment may not print properly on these printer
models.
PostScript Printing
When printing to a PostScript printer from the PC
environment, be sure to print one file at a time. Printing
multiple files may cause a PostScript error. To verify that
the file has finished printing, check the Windows 95
Printer queue. Also, some of the settings for the Windows 95
Basics Printing - 9
printer driver need to be changed from their defaults. Here
are the steps to configure your Windows 95 printer driver
properly:
1 Open the printer icon for your printer.
2 Choose Properties from the File menu.
3 Select the tab labeled Details.
4 Click Spool Settings.
5 Click "Disable bidirectional support for this printer."
6 Click OK.
7 Click Port Settings.
8 Make sure the box labeled "Check port state before
printing" is unchecked.
9 Click OK.
10 Select the tab labeled PostScript.
Basics Printing - 10
11 Click Advanced.
12 Make sure the boxes labeled "Send CTRL+D before Job"
and "Send CTRL+D after Job" are unchecked.
13 Click OK.
14 Close the Properties window.
Epson Emulation
Some documents may not print properly from the PC
environment to a non-PostScript printer using Epson
emulation. Here are some suggestions for correcting
common problems. For additional information, see the
section on setting printer options in the PC Compatibility
Card User’s Manual.
Problem: Text near the top and bottom of each page doesn’t
print or is cut off, or text that should print at the bottom of
Basics Printing - 11
one page prints on the next page.
Solution: Try choosing “No gaps between pages” in the PC
Print Spooler Preferences dialog box, and try printing
again. (When you print after choosing this option, the PC
Print Spooler software will print 66 lines per page instead
of 60 lines per page.)
Problem: You have chosen “No gaps between pages” in the
PC Print Spooler Preferences dialog box, but text near the
top and bottom of each page still doesn’t print or is cut off.
Solution: Most laser and ink jet printers cannot print close
to the edges of a page. Find out what the minimum margins
are for your printer. (Look for this information in the
specifications section of the manual that came with your
printer.) Then set the top and bottom margins to at least
these amounts in the DOS or Windows application from
which you are printing.
Basics Video - 12
Video
For best results, use Apple multiple scan monitors with the
PC compatibility cards.
Video Driver Switching in Windows 95
Some 16-color 640x480 modes use the Windows 95 video
drivers instead of the ATI video drivers. The ATI options will
not appear in the control panel when the Windows 95 video
drivers are being used. To make the ATI options available,
change the color depth to a higher value, such as 256 colors.
Basics Video - 13
Monitor Adapters
Selecting a “pass-through” mode on a monitor adapter may
cause the PC compatibility cards to incorrectly sense the
monitor. When the PC compatibility cards do not sense the
monitor because of an incorrect monitor adapter setting,
they will automatically assume that the monitor is a 14inch RGB monitor and restrict the resolution to 640x480.
Make sure that the monitor adapter correctly represents the
attached monitor.
AppleVision 1705 Display
The AppleVision 1705 Display will only appear to the PC as
a DDC monitor if you use the optional 1705 VGA adapter
cable and a VGA-to-Macintosh video adapter to connect the
display to a PC compatibility card. Using the standard
Apple-supplied cable will result in the monitor being
Basics Video - 14
identified as a 17-inch multiscan monitor. Although the PC
Setup control panel lists Multiscan 17-inch in the Display
pop-up menu, you should select AppleVision 1705 in the
Windows Display control panel.
AppleVision 1710 and 1710AV Displays
If the PC Setup Control Panel indicates an Apple 14-inch
monitor when an AppleVision 1710AV monitor is connected,
do the following:
• Reinstall the AppleVision software that came with the
monitor.
• If you are using only this monitor, or you are connecting
two monitors with the AppleVision 1710AV used to view
the Macintosh environment, be sure to connect one ADB
cable between the monitor and the computer, and another
ADB cable between the port on the monitor and the
keyboard.
Basics Video - 15
Macintosh 21-Inch Color Display
When using the Macintosh 21-inch Color Display with
Windows 95, do not select a 24-bit driver in the Display
control panel, even though it is an available selection. Select
an 8- or 16-bit driver instead. Choosing a 24-bit driver
may cause the PC environment to start up improperly.
Screen Display
When used with some monitors, a particular monitor
resolution (such as 640x480) may cause the display to
show a smaller viewable area surrounded by a black border.
To correct the problem, try selecting a different monitor
resolution.
Basics Video - 16
If your PC compatibility card has 1 MB of video memory
installed, then the only refresh rates available at
1280x1024 resolution are interlaced display modes.
However, Apple multiple scan monitors and many thirdparty monitors do not support interlaced display modes. To
display 1280x1024 resolution, you may have to upgrade
the video memory on the 12-inch card to 2 MB, which
supports higher refresh rates.
If you are using a third-party monitor and it does not
display properly, try these suggestions to correct the
problem:
• Use the Windows 95 Display control panel to select the
monitor name. If the monitor name is not available,
select the SuperVGA monitor option that matches the
maximum resolution supported by the monitor.
Basics Video - 17
• Use the ATI FlexDesk or the Windows 95 control panel to
set the refresh rate to 60 Hz.
• If the monitor still does not display properly, reduce the
resolution.
Fixed Frequency Monitors
Playing a Video for Windows (.AVI) file in full-screen mode
may not work properly on a fixed frequency monitor. A
multisynchronous or multiple scan monitor will work
properly. Refer to the PC Compatibility Card User’s Manual
for information about supported monitors and video modes.
Fixed frequency monitors do not support video “Mode X”
(320x240 resolution), which is primarily used by game
programs.
Basics Video - 18
Playing Video Files
When playing real-time based video files or games in the PC
environment, you may notice synchronization problems
between the audio and video.
Optimizing MPEG Playback in Windows 95
You have three ways to optimize MPEG file playback
performance in Windows 95:
• Adjust virtual memory
• Adjust CD-ROM caching
• Adjust ATI MPEG Player settings
There is no single best way to configure the system. The
instructions here show you where to find the configuration
files you can use to optimize playback for your particular
circumstances.
Basics Video - 19
To adjust virtual memory settings, follow these steps:
1 Click the Start button, open the Settings menu, and
choose Control Panel.
2 Double-click the System icon to open it.
3 Click the Performance tab, and click the Virtual Memory
button. There are a variety of options in the Virtual
Memory window. These options allow you to let Windows
automatically manage your virtual memory, or allow
you to set up virtual memory to try and optimize the
performance yourself.
4 Click OK when done and close all the open windows.
5 Shut down Windows and restart for your changes to take
effect.
To adjust CD-ROM caching settings, follow these steps:
6 Click the Start button, open the Settings menu, and
Basics Video - 20
choose Control Panel.
7 Double-click the System icon to open it.
8 Click the Performance tab, and click the File System
button.
9 Click the CD-ROM tab.
10 Decrease or increase the size of the Supplemental Cache
to optimize performance. Also, choose the speed of your
CD-ROM drive from the “Optimize access pattern for”
pop-up menu.
11 Click OK.
To set ATI MPEG Player properties, follow these steps:
12 Click the Start button, open the Settings menu, and
choose Control Panel.
13 Double-click the Multimedia icon to open it.
Basics Video - 21
14 Click the Advanced tab.
15 Click the plus signs to expand the Multimedia Drivers
and Media Control Devices lines.
16 Select ATI MPEG MCI Driver line.
17 Click the Properties button.
18 Click Settings.
19 Change the CPU utilization, image size, display, and
audio/video options in the MCI ATI MPEG Configuration
window.
20 Click OK to save the settings.
Basics Technical Support - 22
Technical Support
Apple will provide technical support for Apple-branded
software and for DOS 6.22 because it is included with the PC
compatibility cards.
If you are troubleshooting one of Apple Computer’s 100 MHz
PC Compatibility cards and are having a problem with
Windows, Windows for Workgroups, or Windows 95,
contact Microsoft Product Support. See the support
information that came with your Windows package for more
information.
If you are troubleshooting one of Apple Computer’s 166
MHz-P or PR166 PC Compatibility cards and are having a
problem with Windows 95, contact Apple for support. If,
however, you are having problems with an earlier version
of Windows or Windows for Workgroups, contact Microsoft
Basics Technical Support - 23
Product Support. See the support information that came
with your Windows package for more information.
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Specifications
PC Compatibility Cards
Specifications Microprocessor - 1
Microprocessor
7" 100 MHz card
12" 100 MHz card
12" 166-P card
12" PR166 card
100-MHz 586 processor
100-MHz Pentium processor
166-MHz Pentium processor
166 performance rated (PR) 6x86 processor
Specifications Memory - 2
Memory
7" 100 MHz card
12" 100 MHz card
12" 166-P card
One 8 MB DRAM DIMM installed in one 168-pin DIMM slot,
expandable to 64 MB of local DRAM for MS-DOS and Windows
environments
128K Level 2 cache
8 MB of DRAM (soldered on card), expandable to 72 MB of local
DRAM (one 168-pin DIMM slot) for MS-DOS and Windows
environments
256K Level 2 cache
16 MB of DRAM (soldered on card), expandable to 80 MB of local
DRAM (one 168-pin DIMM slot) for MS-DOS and Windows
environments
256K level 2 cache
Specifications Memory - 3
12" PR166 card
16 MB of DRAM (soldered on card), expandable to 80 MB of local
DRAM (one 168-pin DIMM slot) for MS-DOS and Windows
environments
256K level 2 cache
Specifications Sound - 4
Sound
Includes Sound Blaster 16–compatible support (DOS and Windows
environments)
16-bit stereo output
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