Stealth VRAM Addendum --------------------- There are several changes to the Diamond Stealth VRAM User's Manual detailed on this page. Please take a few moments to read this addendum before installing the Stealth. Stealth VRAM Jumper and Switch Locations Due to differences in the VRAM type that is used, the Stealth VRAM is shipped in two different PCB designs. The first is the more common ZIP VRAM type which protrudes out in an angle. The flat VRAM which is known as the SOJ type is surface mounted on the PCB. The performance of the two are exactly identical, but the jumpers differ between them. /------------------------------\ | VRAM Type | Jumpers | |------------------------------| | ZIP | JP5, JP6, IRQ2 | |------------------------------| | SOJ | JP6, JP7, IRQ2 | \------------------------------/ The Stealth VRAM has jumpers and switch setting which permit you to optimize its operation. The jumpers and switches are preset at the factory for "best case" computer configurations, and you may not need to change them. However, you should double check your configuration needs with the following information. Jumpers Connections Jumper JP5: VRAM Memory On-Board This jumper informs the Stealth VRAM of the available memory on the video card. if the jumper is placed on pins 1&2, 1MB of VRAM is installed while pins 2&3 represents 512k of VRAM on the board. All Stealth VRAM cards come equipped with the 1MB of VRAM on board. Jumper JP6: Sets 8/16 bit BIOS Access This jumper provides the option of accessing 8 bit BIOS or 16 bit BIOS access. The default position on the Stealth VRAM comes with the jumper ON for 16 bit BIOS access. Jumper JP7: Sets Bus timing Bus timings on motherboards vary. The jumper at JP7 is set to Normal Bus timing with the jumper block on pins 1 and 2. Position the jumper block over pins 2 and 3 if timing problems occur. This jumper is in addition to switch 3. JP7 Default setting: --->PINS 1 & 2 NORMAL BUS TIMING pins 2 & 3 alternate bus timing IRQ Jumper: Sets the IRQ2 interrupt IRQ2 is enabled on the Stealth VRAM to conform to EGA register compatibility by placing the jumper block over both pins. To disable IRQ2, remove the jumper block. IRQ2 Jumper Default setting: --->ON=IRQ2 ENABLED OFF=IRQ2 disabled ----------------------------------------------------------------------------- Windows 3.1 Installation Instructions Microsoft Windows 3.1 must be installed on your system before the Diamond Turbo Windows drivers are installed. Unlike Windows 3.0 drivers installation, Windows 3.1 will not use the the GO Installation Program. Drivers for Windows 3.1 are found on disk 2 labeled Windows 3.1 Driver Update. Prior to driver installation, setup Windows 3.1 for VGA and verify all applications and functions work properly. 1) From the \WINDOWS sub directory in DOS, run Windows setup by typing [SETUP]. 2) Using the cursor key, highlight the Display option. Press Enter to change this selection and select the "Other..." setting at the very bottom of the list. This indicates that you will install your own driver from the drivers supplied by Diamond Computer Systems. 3) Specify the location of your Windows 3.1 Stealth Driver Update Disk (e.g. A:\) and press Enter. Select the Stealth driver you wish to use and follow the on-screen prompts. 4) Windows Setup Program will prompt you to select a driver from the list of 5 available drivers, and they are: 1024x768x256 Colors (1) 1024x768x256 Colors (2) 800x600x256 Colors 640x480x32k Colors 640x480x256 Colors 5) Choose a driver from the list and press [Enter]. *** Important!: If you are replacing your old driver with a new one, press [ESC] to replace or press [ENTER] to keep the old driver. The Setup Program will ask for the Stealth VRAM diskette if you decide to press [ESC] to replace the old driver. 6) Follow the instructions until you come back to the DOS prompt. 7) Type WIN at the DOS prompt. You are now ready to run Windows 3.1. To select other Stealth drivers after initial installation, run SETUP, select Display, and choose the Stealth driver from the list of choices. You may also use the SETUP Program within Windows 3.1 when changing drivers by double clicking on the Windows Setup Icon. ----------------------------------------------------------------------------- Technical Support Memory Manager Conflict Should you encounter various problems relating to Windows, its drivers or incompatibility issues with other add-in cards and peripherals, the first place to check is the existence of a memory manager in the CONFIG.SYS file. When using QEMM please avoid using the "stealth" option (ST:M or ST:F). If you need to use this option, add the line XST=C000 after the "stealth" option. You should also exclude the memory area of A000-C7FF. For 386MAX, you will need to edit the 386MAX.PRO file in your 386MAX directory. Find the line that reads "VGASWAP" and place a semicolon at the beginning of the line. When using the EMM386, please exclude A000-C7FF using the "x=A000-C7FF" command. COM Ports / 2E0h or 2E8h Conflict When moving Windows Icons on the screen, you can see a shadow or a trace of the original object. You may also see erroneous test lines on the screen. Please be advised that this is a problem that is inherent with the S3 chip. When connecting an 8-bit devices such as FAX, Modem, Network cards and various serial post adapters sharing the ISA bus and using I/O address 2E0h or 2E8h, the conflict will occur. Especially with certain network cards the I/O address 2E0h is used quite frequently. The solution is to move the I/O address map of the 8-bit device(s) to encompass a range outside 2E0h or 2E8h. For instance, devices using any COM Ports at 2E8h need to disable it, and utilize the alternate COM Ports; or remap the I/O port address range if a mechanism to do so is provided. Cascading IRQ9-15 Conflict Add-in adapter cards that utilize IRQ9 though IRQ15 can often cascade down to IRQ2 creating a conflict with the Stealth VRAM. If this is the case, you may disable the IRQ2 jumper on the board. The factory default setting for the Stealth VRAM has IRQ2 enabled to conform to EGA register compatibility. The IRQ2 jumper is necessary only for older application and games (mainly EGA) which require IRQ2. This jumper can easily Be removed to avoid cascading IRQ9-15 conflict. Green Test Problems If you are experiencing "Green" text problems when using the SMODE.COM with version 2.33 software, please copy the SMODE.COM from the v2.33 disk root directory to \VRAM\UTIL sub directory. This will overwrite the old SMODE and allow the changes to take place. Please call Diamond Technical Support for the upgrade kit. GO Program Install Program If you experience a compressed or unreadable screen during execution of the GO program, an alternative method is INSTALL. This will copy the same information as GO, less the graphic installation. The Diamond Bulletin board now operates at 9600 Baud and can be accessed by dialing (408) 730-1100. Stealth VRAM Addendum rwd-043092