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The only known problems are under the following conditions.
The reason is simple. Other monitor settings will have a mode that the RiscOS MDF file has not listed and thus will cause error messages. It should default to VGA but sometimes it will freeze and could cause give more serious problems.
Also look at the Memory Configuration relating to PCPro3.xx's Display.
This version of ARMDRV 2.16 Display Adaptor fixes a problem with clipping on RLE-encoded DIBs (device independent bitmaps).
This particularly affected 'Perfect Plants' CD, and probably others by Macmillan Interactive Publishing.
Note Various problems remain: Slow 32K colour icon rendering, white -> green (eg pointer) in 32K multitask, wrong animation background colour in 32K, only 16 backdrop colours restored after DOS box in 256 colour modes, missing Hebrew text in Win95, VESA2 DirectX support and Basic Raster Capabilities.
1) Start Windows go to "Windows" and down to Select "Main" and then Select "Windows Setup".
2) Select "Options", "change System Settings" and "Display"
3) Scan down list and Select "Other Display (Requires disc from OEM)"
4) Delete A:\ and type C:\DRIVERS\WINDOWS\WIN3
5) Follow any on-screen instructions (You may need disc 2 of your Windows 3.xx set at this point).
6) Close Windows and restart for changes to take effect.
(There are several versions of Win95 a,b,c and different Win98 Beta versions thus not all the buttons are as stated)
1) Go to My Computer and Control Panel.
2) Select "Display" > "Settings" > "Change Display Type"
3) "Change" "Adapter Type" (Do not change monitor type) Select "Have Disk"
4) Delete A:\ and type C:\Drivers\Windows\Win95 and Select "OK".
5) Should find "Aleph One configurable ARM driver" Select "OK".
6) Select "Close" then "Apply" then you will have to restart and select "Yes".
Correct: ARMDRV Installed with 20th July 95 OEMSETUP.INF
[boot]
386grabber=vga30.3gr
display.drv=armdrv.drv
[boot.description]
display.drv=Configurable ARM Driver (4,8,16,32 bpp)
[386Enh]
display=vddvga30.386
Works:
Caused by either: VGA installed then changed to ARMDRV manually
or: VGA installed then changed to ARMDRV using 1996 OEMSETUP.INF
This only works on !PC v2.00 or later.
[boot]
386grabber=vga.3gr
display.drv=armdrv.drv
[boot.description] display.drv=Configurable ARM Driver (4,8,16,32 bpp)
[386Enh]
display=*vddvga
Incorrect: Causes 'Incorrect System version' when running DOS box.
This results from installing VGA (version 3.0) then upgrading to ARMDRV
with 1996 OEMSETUP.INF
[boot]
386grabber=vga30.3gr
display.drv=armdrv.drv
[boot.description]
display.drv=Configurable ARM Driver (4,8,16,32 bpp)
[386Enh]
display=*vddvga
If windows 95 goes into a multitasking window when the startup banner is displayed then add this definition to your existing RiscOS MDF file to prevent it. The MDF files are found in the !Boot.Resources.Configure.Monitors directory.
# 320 x 400 (71Hz)
startmode
mode_name:320 x 400
x_res:320
y_res:400
pixel_rate:12750
h_timings:24,32,2,320,28,0
v_timings:3,28,0,400,0,9
sync_pol:3
endmode
If your PC card automatically changes from single task to multi task mode, then this means that there is not a suitable mode defined in the MDF.
You could go to the following sites which contain collections of Monitor Definition Files.
Carlos Michael Santillán's RISC OS Site
Foggy's Monitor Definition File Page
The Acorn Cybervillage - Monitor Definition Files
Saving the display by using the Menu options will give you the mode size. You can then use !MakeModes to create a new mode or look for a similar mode that already exists within the MDF. Copy that definition within the same MDF file and make minor changes to the copied section. This is not an easy task but a new mode definition is what you need to stop it continually going into multitask display.
With the introduction of PCPro3 we have found that there is an advantage to having a monitor setting even for PCPro2 as long as you follow the guidelines below.
In RiscOS select on the Monitor icon on the icon bar to get a monitor config window for the monitor and MDF file you are using. Select the Resolution window menu button and take a note of the highest square-pixel Resolution at the bottom of the menu. Above the dotted line are not square-pixel and should be ignored.
On the PC side, run up Windows95 or 98's Control Panel Display. What you select next depends on the Windows version you are using. Basically you want to change the monitor to one of the Super VGA "Standard monitor types" with the same Resolution as noted from RiscOS.
After you have changed the monitor setting you should find that when in the Display Settings the Desktop Area slider will not allow you to have a pixel resolution that the monitor is incapable of displaying.
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