1. jet69536.exe Driver
2. RELEASE.TXT File Contents

RELEASE.TXT Driver File Contents (jet69536.exe)

1/21/96

ET6000 Windows 95 Graphics and Direct Draw Driver Release Notes

Driver Release 5 - Version 4.03.3600 (1/21/96)


Changes from Release 4 (ver 4.03.1400 10-24-96)

Added:
  * Microsoft Word 8.0 bug from Office '97 has been fixed.

  * Helper app, "tet6help.exe" is no-longer required for 
    assistance of clipping of DirectDraw Overlays.

  * Fixed bug with Display List getting corrupted when <ALT><ENTER> back
    into windowed DOS from Full Screen while ActiveMovie was running.
    
  * Fixed a GPF in allocating an overlay with "same as Primary" in 
    5/6/5 16-bit RGB modes.
    
  * 1600x1200x8 mode is now supported in DirectDraw  

  * Fixed various bug problems with PowerPoint from Office '95

  * Added a new switch to win.ini to disable the allocation
    of fliping overlays "NoOverlayFlip=1" (see below)

  * Added threading code in the DirectDraw Driver to eliminate the
    need for the external tet6help.exe for clipping of overlays.

  * Integrated G2 code base into mini driver and Optimized 
    more output areas for the Pentium.

  * Fixed a potential divide by zero error when clipping ActiveMovie 1.0


Installation Notes

The driver is installed through the normal Windows 95 Control Panel 
mechanism as presented in the README.TXT file in this directory.

To accelerate Video file playback using DirectDraw you need to have 
DirectVideo or ActiveMovie installed.  

DirectVideo installation package is available from Tseng Labs
at http://www.tseng.com/download/directxv.exe  


Basic MiniDriver Functionality

The driver supports identical accelerated functionality in all pixel 
depths 8/16/24. For operations that can use Raster Ops the driver uses 
the accelerator in all cases. HiColor (16Bpp) modes are 565.  The driver 
uses Linear Addressing (not VFLATD bank switching) in all modes.

This driver also utilizes Device Bitmaps to provide improved accelaration.
If there is enough Offscreen Memory available, Color Bitmaps that normally 
would be allocated in Host/System Memory, will be allocated in Screen Memory
allowing the ET6000 to be used to operate directly on those bitmaps.  The
accelarated support for Color Bitmaps below when they reside in Video 
Ram.  If there is not enough room for a particular bitmap then the Dib Engine
is used to render those.



The minidriver utilizes the ET6000 to accelerate the following:

Legend:

S - Screen
C - Color Bitmap - Host Memory
M - Mono Bitmap


BitBlt, CtoS, All ROPS (this includes PatBlt) 
BitBlt, StoS, All ROPS (this includes PatBlt)
BitBlt, MtoS, All ROPS
PatBlt, C, Mono Pattern, All ROPS
PatBlt, S, Mono Pattern, All ROPS
Lines,C, Horizontal/Vertical/Diaganol
Lines,S, Horizontal/Vertical/Diaganol
Polygon, C & S
Rectangle, C & S
Scanlines, C & S
Ellipses, C & S
Circles, C & S
Rounded Rects, C & S
Text, C & S, All Fonts
(Temporarily disabled because of Word 8.0 bug) StretchDIBits, S, 4Bpp, SRCCOPY only
Hardware Cursor, all modes, when Cursor is mono


Additionally, Automatic Refresh Rate selection based on Monitor Info and
DDC1 monitors are supported in the driver.


The DirectDraw Portion of the Driver supports the following:

DirectX 2.0, 3.0 and 3.0a (DirectX 1.0 is no-longer supported)


Low Resolution Modes at 8 & 16 & 24 Bpp:

320x200
320x240
512x384
640x400


Primary Surface Access
Accelerated Transparent Blt (arbitrary Transparent Color)
Full Screen Page Flipping
BitBlt, All ROPS
2 Overlay Windows (1 Page Flipped Overlay) (RGB 16/24 or YUV422)

Using a win.ini switch, you can display an indicator to visually determine
if the ET6000 Display List Overlay Engine is being used. A small block will 
appear in the upper left corner of the video.  The block will be purple in
color for YUV422 Overlays and White for RGB565 overlays. Edit win.ini as
follows to get the indicator:

[TsengDD]
OverlayIndicator=1	; delete line or set =0 to remove indicator

Some resolution/color depth/refresh rate combinations have visual 
quality problems with the Display List processor. The following display 
modes have overlay capability disabled by default:

	· 1024x768x24 70Hz
	· 1024x768x24 60Hz
	· 1024x768x16 75Hz
	· 1024x768x16 70Hz
	· 1024x768x16 60Hz
	· 800x600x24 90Hz
	· 800x600x16 90Hz
	
  To override the default settings and force overlay support for these modes, 
  edit win.ini and add the following switch to the [TsengDD] section:
  Note: (You may also have to add the "[TsengDD]" section description also)
  
[TsengDD]
OverlaysOn=1  	; 0 does not allow overlays in the above modes, 1 does.
                ; When set to 1, faster MPEG and Video plaback is posible
                ; but this setting is not recomended nor supported by Tseng Labs.


[TsengDD]
NoOverlayFlip=1  ; 0 does not allow overlays flipable Overlay surfaces to be created.
                 ;  To up the score for WB 97 so max frame rate is not tied to
                 ;  Monitor Refresh

                 ; Please note that only 1 overlay can be flipable.  The other(s) 
                 ; must be single buffered.


[TsengDD]
MaxOverlays=n    ; n = (1,2(default),3,4) Sets the maximum number of overlay (video) 
                 ; windows that can be shown simultaneousley. 2 is the default and is
                 ; also all that is supported by Tseng Labs. Problems can occur
                 ; when 3 or 4 is attempted and is not recomended for use.


The driver default internal switch settings in "win.ini":

[TsengDD]
OverlayIndicator=0
OverlaysOn=0
NoOverlayFlip=0
MaxOverlays=2