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-
- *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
- MC68040 ToolKit - troubleshooting guide
- *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
-
- Most things you do with this toolkit should work perfectly first time,
- but not always. What follows is a brief, but concise troubleshooting
- guide for when things go wrong. It is also invaluable for detecting
- problems before they happen, and helps you to see what SHOULD happen
- when certain specific things are wrongly configured.
-
- Each 'problem' is headed with a brief description of the fault, and is
- followed by any probable causes. Sometimes the symptoms can be due to
- more than one problem, and sometimes a single problem can have several
- sytmptoms! You will just need to use common sense to narrow the fault
- down to a shortlist - as one from three is certainly better than one
- from a possible infinite!
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > When I run some programs, the screen is full of rubbish - but the rest
- of the program seems to continue unhindered. What is going on?
-
- Probable cause:
-
- > Some program try to put the screen in FastRAM - which is not allowed.
- Play with the FastRAM flags using PRGFLAGS and see if you can improve
- matters.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > When the Desktop loads, I get garbage icons and the machine crashes!
-
- Probable cause:
-
- > This is because GEM is trying to use the Blitter with FastRAM, which
- is not allowed. There are 2 ways around this. 1) Turn the Blitter off
- by installing NVDI or run something like MagiC. 2) Use the VDI blitter
- patch feature in the driver setup. In both cases, the driver will take
- care of everything else.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > I'm getting garbage in my files - something is corrupting them!
-
- Probable cause:
-
- > If your files are getting corrupted, or occasionally contain garbage
- when you load them from disk, then it is normally down to either a
- lack of FastRAM buffering on your Floppy/SCSI devices, or because
- you have not flagged your DMA drives using the 'DMA/FRB' buttons, or
- because you have not flagged these drives using the 'D-CACHE' buttons
- and the datacache is interfering with your disk driver. All of these
- problems can MOST PROBABLY be rectified with this driver software,
- providing it is correctly configured.
-
- If the problem only happens on SCSI drives and not on IDE drives, then
- it may just be a lack of FastRAM buffering or because you have not
- flagged these drives using the 'DMA/FRB' & 'D-CACHE' buttons. Use the
- 'Buffer Internally' option to counter the FastRAM buffering problem.
-
- If the problem persists on IDE drives as well, then it is almost
- certainly caused by a problematic harddisk driver. Use the 'I-CACHE'
- locking buttons to correct this on each of the affected drives.
-
- Read 68040CFG.TXT carefully until you are sure you know how to set
- this up properly. Everything you need to know is in there.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > My disk directory changes every time I hit 'Escape'. Why is this?
-
- Probable cause:
-
- > This is almost certainly the same problem as described above. Check
- your 'DMA/FRB' buttons and FastRAM buffering options, and make sure
- you have set up the cache-locking buttons properly for Floppy/SCSI
- devices when using that particular harddisk driver.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > HDDriver sometimes doesn't recognise my SCSI when running in the auto
- folder after the 68040 driver, and sometimes it gives me the wrong
- partition assignments altogether!
-
- Probable cause:
-
- > HDDriver can't log SCSI devices while the data cache is enabled. Turn
- off the 'Enable D-Cache' option in the driver so the data cache is left
- disabled when the driver finishes installing itself, and place the
- BCACHE40.PRG program _AFTER_ HDDriver in the auto folder - to turn the
- cache back on again when HDDriver is finished. Alternatively, you could
- use another harddisk driver.
-
- > HDDriver also tends to assign drives incorrectly if it's FastRAM flags
- are set in the program header. Clear these using PRGFLAGS or some other
- equivalent tool.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > When I hit CTRL-ALT-SHIFT-DEL to cold-start, the machine freezes.
-
- Probable cause:
-
- > You are using an old version of the ToolKit driver. All versions after
- v4.02 have been fixed with the coldstart key combination.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > Sometimes, when I run XBoot (and some other programs) - most often from
- ST-RAM, they crash and quit back to the desktop for no apparently good
- reason. What am I doing wrong?
-
- Probable cause:
-
- > Xboot uses self-modifying code to 'unpack' itself into an executable
- form after loading from disk. The 68040 instruction cache doesn't like
- this, and it can cause problems. If it persists, then you could try
- turning off the CBC option on the 68040 dialog.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > When I run programs from ST-RAM with the fastload bits cleared, the
- mouse often freezes or locks up when the program is loading - and the
- keyboard often goes nuts as well. What is causing this?
-
- Probable cause:
-
- > This is caused by programs using 68040-unfriendly code. The TOS image
- in ROM is mainly responsible for these problems when actually running
- programs from the Desktop, but other software can cause similar hassles
- with the mouse. If you use the FastROM feature, then the ROM is patched
- to prevent this from happening, but it won't cure problems caused by
- third party software.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > When I use XBoot to install a new set, and the machine reboots, the
- screen usually goes nuts and screams noisy rubbish at me until I turn
- the computer off. Is this serious?
-
- Probable cause:
-
- > This could be one of several things, but is most likely because the
- driver is not properly set up. Check that 'Resurrect PMMU' is not
- enabled - unless of course you are sure the other options are set
- up to match.
-
- If this is not the reason, then try disabling things one at a time
- until the problem goes away. This should give you a clue as to what
- is going on.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > The machine crashes when I boot up.
-
- Probable cause:
-
- > There is probably a software conflict in the auto folder. Check the
- auto-order and make sure 68040DRV.PRG is placed at the start of the
- sequence. You may need to move TKBUBBLE.PRG away from the end of
- the auto folder, but this should only be required with very unusual
- programs, and is a last resort.
-
- > It is possible you have set up an 'impossible' configuration using
- the driver config tool, and the driver is reacting in an unpredictable
- manner. Start off with one of the example configurations and make
- modifications one at a time, using the docs for reference. This is
- safer than diving in and changing the options without a clear
- understanding of what they do.
-
- > Failing that, turn off for 15 seconds and try again.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > Every time the machine boots, it just resets as soon as it hits the
- driver program.
-
- Probable cause:
-
- > You have enabled 'Bootstrap loader' without the '32-Bit FastROM' and
- 'Resurrect PMMU' options also being active. Either disable bootstrap
- mode or enable the other two for a reset-resident FastROM.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > I have 32MB (or some other amount) of FastRAM installed, but the driver
- is only detecting 16MB (or some other equally incorrect amount).
-
- Probable cause:
-
- > Check the JP1/JP2 jumpers on your Afterburner. Sometimes they need to be
- configured before the SIMMs can be detected properly. Trial and error
- may be necessary, but usually position 2-3 is correct for both jumpers.
-
- *-----------------------------------------------------------------------*
-
- Problem:
-
- > The VDI Graphics test in GEMBench bombs out every time.
-
- Probable cause:
-
- > You are probably using FastRAM with the VDI blitter patch and don't have
- NVDI installed on your system. The VDI patch is not perfect, and one or
- two GEM programs will not like it. GEMBench is one of them.
-
-
-