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- STACKER NOTE Stac Electronics Technical Note
-
- Subject: Stacker coprocessor installation checklist.
-
- Tech008 - 2/20/92
- Page 1 of 1
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- This note provides a checklist for troubleshooting the Stacker version 1.x
- (8 bit) coprocessor, and the Stacker 2.0 XT/8 (8 bit) and AT/16 (16 bit)
- coprocessor cards.
-
- Symptoms:
- A Stacker coprocessor installation exhibiting the following symptoms will merit
- further investigation:
- 1. During Install, the coprocessor may fail to respond at all the addresses.
- 2. The Stacker.com message: <Coprocessor card not functioning. Invoking
- software driver> may appear at boot time.
-
- Solution:
- First check the basics.
- 1. Check to ensure the card is properly seated in the slot.
- 2. Check to ensure the /B parameter in the Stacker driver contains a valid
- address. Possible base addresses are listed in the 2.0 manual pgs. 43-47
- and on page 17 in the version 1 manual.
- 3. Run Install to test all addresses.
- 4. Try adding each address to the driver in Config.sys and COLD BOOT (Reset
- or a power down/up). A cold boot is necessary to flush addresses.
- 5. Try a different slot.
- 6. Try rearranging the order of the cards in the expansion slots.
- 7. Try disabling SHADOW RAM (Scratch RAM) if present. This is done in the
- BIOS setup at boot time or on some memory manager device lines in
- Config.sys.
- 8. If possible, try the card in a 2nd machine to see if the problem is with
- the card itself.
-
- Card specific issues:
- *XT/8: or a Stacker version 1 coprocessor card,
- 1. Check for address conflicts with a memory management program. Fixing
- this problem usually involves adding memory exclude statements to the
- memory management driver. Try starting with the range C400-DFFF to
- enable the testing of all possible addresses during Install.
- 2. If the XT/8 card is in a 386 machine, it may be that the motherboard
- maps memory over the addresses that Stacker uses to access the card.
- Refer to your system user's guide for more information.
- 3. Version 1.11 or prior with 16 bit VGA card, there may be a conflict
- between the VGA card and the coprocessor. Test the card with the VGA
- card set to 8 bit mode. If this eliminates the conflict, call STAC
- technical support.
- *AT/16
- 1. Something (usually another add-in card) is conflicting with the address
- of your AT/16 card. Check the hardware addresses for your other cards
- or change the hardware address for the AT/16 card.
- 2. The buss speed may be greater than 8 Mhz. This value can sometimes be
- set in the BIOS. It is usually set as the clock speed (CLK) divided by
- some number. Try setting the speed to 8 Mhz or less to test. If buss
- speed is the issue, call STAC technical support.
- *MC/16
- 1. You must install and configure the MC/16 card before installing Stacker.
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- 1992 STAC ELECTRONICS
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