Advent 4020 PC

Memory Upgrade

4MB (1 x 4MB Fast Page RAM in SIMM0) supplied with machine. To upgrade memory on this machine the user must insert 72 pin PARITY or NON PARITY SIMMs into spare 72 pin SIMM sockets. The chips must have an access time of 70 nanoseconds or less. RAM can be upgraded to 128MB using 1MB, 2MB, 4MB, 8MB, 16MB & 32MB Fast Page Mode SIMMs. The manual refers to "double density" SIMM's this is interpreted as follows: An 8MB double density SIMM is actually a 16MB SIMM.

In the Box

Disks Supplied

• 3.5" Disc MS-DOS SETUP ver 6.22(HD) - 3 disks
• 3.5" Disc MS-DOS Supplemental Disk ver 6.22(HD)
• 3.5" Disc MS Windows SETUP ver 3.11(HD) - 3 disks
• 3.5" Disc MS-DOS Supplemental Disk ver 6.22
• Pointing Device Driver and Popup Menus v 7.1 (DD)
• 3.5" Disc S3 805 Utility/Driver(HD)

Items Supplied

• 4020 Base unit
• Software
• Mouse
• Power cable MAINS to PSU
• Power Cable PSU to MONITOR
• Keyboard
• Monitor

Documentation Supplied

• Advent Personal Computer User Manual
• VGA S3 805 User Manual
• Super I/O Card for the XT,286,386,486 and compatibles
• Proof of Entitlement

Known Issues

Installing Windows 95

If you wish to install Windows 95 you must upgrade the PC to at LEAST 6MB of RAM.

BIOS Reset

To reset BIOS move jp24 from 2-3 to 1-2 for 5 seconds then back again. Make sure you go into the BIOS and make a note of the HDD settings first. If you need the original drive settings, use these :

CYL: 1024, HD: 16, SECT: 63

Disabling Com2

If you ever need to disable Com 2 on an Advent 4020, then move jumper 7 on the card from 2-3 to 1-2.

Windows 3.11 Crashing At Install Disk 3

On Advent 4020 Pc's if Windows 3.11 crashes between disk's 3 & 4 whilst changing bideo driver's, go into the Bios & change wait state from zero to one. This should allow you to finish the install. After install is completed you don't have to change it back.

Installing an Opti Soundcard

• You should have the latest drivers on a floppy diskette ready for installation.
• Start Windows 95 and proceed to the Control Panel folder and select (double click) the SYSTEM icon.
• Select the Device Manager tab to display the list of devices currently present on your system.
• Check to see if you have previously installed the device. Usually, the device name starts with "OPTi .. SoundSystem." If a previous instance of the device does not exist, exit the System Properties dialog box and skip the next section.
• If the device has been installed previously, double click on the device name to expand the list of sub-devices and select "OPTi .. Sound System:..." to remove the set devices plus this parent device. You will not be able to remove child devices which are controlled by this parent device unless this parent device is removed. Check also to see if you have previously installed any Windows Sound System or Sound Blaster audio devices or their compatibles, and if so, please remove them from the list. Once the devices has been removed, you must restart Windows 95.
• Select (double click) the Add New Hardware icon located in the Control Panel folder to add/update the new device and it's associated drivers.
• When prompted by Windows 95 for the Auto-Scan option for detecting new devices on your System - select NO and proceed to the next page.
• Windows 95 will display a list of known devices that you currently wish to install. Select "Other Devices" even though the name of the device is included in the list. This forces Windows 95 to perform a fresh install for your device. Select Next to proceed.
• Windows 95 will again display a list containing manufacturer names and at which point you should ignore the list and select the "Have Disk..." button. This tells Windows 95 to read special installation instructions from your diskette to correctly install the drivers for your OPTi Sound device. You will have to direct Windows 95 to the proper location of the floppy diskette.
• Once information from the floppy diskette has been read by Windows 95, a list of devices available for installation will be displayed. Just select the basic option which includes only the Sound/Game support.
• Select Next and Windows 95 will proceed to install the drivers needed for your device and configure your device accordingly. Once your device has been successfully configured, Windows 95 will prompt you to restart your system - select No to skip this restart process since you should have your Sound Card properly plugged in and installed. If however your Sound Card has not been correctly installed, you will have to select Yes to restart Windows 95.
• Install REAL MODE DOS Support: If you prefer to use your Sound Card in Real Mode DOS environment, you have to select "Yes" at the "Restart System" prompt in the previous section. During the reboot process the DOS Installer will be invoked automatically. Please follow the instruction of DOS Installer and it will setup the sound card properly for your Real Mode DOS Games or Applications.

  The DOS drivers will add the following lines into the AUTOEXEC.BAT file (NB. Path names may be different, depending on version of Opti card) -

  SET SOUND16=C:\OPTI924
  SET BLASTER=A220 I5 DI T4
  LH C:\OPTI924\SNDINIT.COM /B