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daewoo 2800

daewoo 2800

Experienced Member
Joined
Feb 11, 2024
Messages
65
hi,
this 486dx 66 is slow to post. takes a long time to test the floppy, if at all.
if i hit the space bar and terminate the memory test as it is checking the ram size
it will go to test floppy and the last post beep within a few seconds and will start loading the os(W95)

i checked all files needed to boot are listed in the config and autoexec files,
and the files are where those startup files point.
i've tried changing bios settings to just boot to C:\ and not to A:--->C:
also tried quick boot (no memory testing)

thanks for any help
 
Last edited:
What happens if you say that there is no floppy on board? I have seen settings where you can discard testing if the floppy is present at all.
 
Define "slow" and "long time".

Memory test takes long unless "Quick POST" is enabled in the BIOS. In that case, it will only do 1 pass.

Floppy test takes 2 or 3 seconds, which is simply because the seek is mechanical. You can normally disable the floppy seek test in the BIOS as well.
 
thanks for the quick response
weird deal now.
i chose the option "not installed" for the floppy as per suggestion, and it still tests for it??!
when the computer gives an error which BTW is the only time i see an F2 queue for setup .
i have to remove the HDD otherwise to get a F1-F2 option to goto setup
(crtl + alt then s key doesn't work )

how long does it take for it to test for the floppy normally?
it never tests, at least letting it go while eating dinner or whatever . anything over 3-4 mins
and i start over and hit the spacebar terminating the memory test and if my timing is right it will
test floppy and give the bios loading notice the go to loading the OS

if i can get the floppy to test, the computer will load the os in 45-60 seconds, normal for a 486 as i remember.

i would assume that if the bios chip was not installed in the socket right, the computer wouldn't work.
but when looking at it, it is in the socket weirdly, more towards the bottom not near the top "key"
and off one socket pin.
bios closeup.jpg

the first page in the bios setup is really basic with not many options, this is from the owners manual

pg1 bios.jpg

thanks for taking the time to help me here
 
Last edited:
daewoo 2800 said:
i chose the option "not installed" for the floppy as per suggestion, and it still tests for it??!
Click to expand...
If both floppies have been marked as "not installed", then I am a bit flabbergasted.

daewoo 2800 said:
when the computer gives an error which BTW is the only time i see an F2 queue for setup .
i have to remove the HDD otherwise to get a F1-F2 option to goto setup
(crtl + alt then s key doesn't work )
Click to expand...
Start typing F2 right from the start up. Other wise ESC, F10 or F1.
 
Do you have the turbo switch turned off or not connected? Some 486 boards run at about the speed of an 8 MHz 286 unless you have a turbo button connected and turned on, or put a jumper on the turbo switch jumpers.
 
thanks guys for the suggestions
Ruud said:
If both floppies have been marked as "not installed", then I am a bit flabbergasted.


Start typing F2 right from the start up. Other wise ESC, F10 or F1.
Click to expand...
Yeah both were "not installed" but still it tested for it, as said weird
All that happens is "Keyboard stuck error" for the User manuals crtl+alt+A key. And
same for F2 (F1 key is "continue. loading/running) i haven't tried ESC or F10 yet today but i kinda expect the same error.

vwestlife said:
Do you have the turbo switch turned off or not connected? Some 486 boards run at about the speed of an 8 MHz 286 unless you have a turbo button connected and turned on, or put a jumper on the turbo switch jumpers.
Click to expand...
No button or switch, its a jumper and it is closed(on)

If pressing the spacebar cancels/skips the memory test and then bios checks
the floppy and then loads OS , isn't that bypassing part of the bios script?
Perhaps the issue is a corrupt bios?

is there a bios reader to text file and a flasher you guys know of?
In the early 2000's i overclocked 2 or 3 boards so i've some experience
with this& that stuff.

thank you for your help and suggestions
 
Last edited:
Chuck(G) said:
Is there another setup screen that allows one to disable the floppy controller?
Click to expand...
Thanks for the consideration and suggestion.
but as said pretty basic bios, nothing else pertains to the issue
heres the other 2 pages of setup for your perusal
BTW: i'm still on probation here until i post 10 times so my responses are delayed being posted..

p2manual.jpg
p3manual.jpg
 
The third screen--set "Internal FDC" to "Disabled" and see how things progress. It might possibly be that the BIOS is attempting to auto-determine if you have floppies connected.

Unexplained BIOS pauses are a mystery. I have an HP made by FIC Socket 1 board with the Intel 815 chipset and 1GB RDRAM. The thing does the memory test, equipment determination and then pauses for what must be 30 seconds before coming up with "Mouse detected". What happens in those 30 seconds?

I have a dual P3 board/440GX chipset with 2GB of memory installed--it does a memory check, then pauses for what seems like forever before checking equipment.

Both boards are set for "Fast boot". I'd hate to see what "slow boot" looks like. :)
 
Chuck(G) said:
The third screen--set "Internal FDC" to "Disabled" and see how things progress. It might possibly be that the BIOS is attempting to auto-determine if you have floppies connected.

Unexplained BIOS pauses are a mystery. I have an HP made by FIC Socket 1 board with the Intel 815 chipset and 1GB RDRAM. The thing does the memory test, equipment determination and then pauses for what must be 30 seconds before coming up with "Mouse detected". What happens in those 30 seconds?

I have a dual P3 board/440GX chipset with 2GB of memory installed--it does a memory check, then pauses for what seems like forever before checking equipment.

Both boards are set for "Fast boot". I'd hate to see what "slow boot" looks like. :)
Click to expand...
OK!! progress.
as for the issue of getting into setup : if i exit W95 and goto "restart in MS-DOS"
i can enter setup with the crtl+alt+S key
AND if the Internal FDC is set to "Disabled" 'puter will give a "Diskette Error"
but will boot as it should, however there is no A drive available once in windows..
It doesn't matter if change "Quick Boot" to either "Disabled/Enabled" OS starts loading within 20-30 seconds now.
but you need floppy for lots of W95 stuff

thanks for the help here
 
Nevermind what i said about booting up
i forgot i was doing a warm boot from Dos
things still hang forever from cold boot

other weirdness
last night i installed a 2nd hdd.
it shows in the bios as the correct size and everything.
And in Device Manager as "Generic ide disk type 43"
C drive shows type 42.
BUT no drive E: in MyComputer?
i'm reinstalling W95 now to see if it gets found.
 
It should be obvious but, we are just humans, did you use FDISK to set up the 2nd HDD?
 
Sometimes it helps to strip down the system to its most basic original state. I would remove any cards you can in the slots to the bare minimum. Take the ram down to the minimum, disconnect the floppy drives, disconnect the CDROM, FD, HS, etc. Try booting then and then. If it behaves better then I would add the extra RAM back, boot again. if good, then add a floppy and continue like that. You may find the culprit that way. If it misbehaves without anything hooked up, then its likely an issue with the MB. I would check jumpers, power connector in that case. You may have a resource conflict and not even know it, or bad floppy cable, bad HD cable, etc. By building your way back up and making sure each piece you add back completely works you will have a fully checked out and potentially well configured machine if you take the time to make sure everything is set correctly.
 
EverStaR said:
Sometimes it helps to strip down the system to its most basic original state. I would remove any cards you can in the slots to the bare minimum. Take the ram down to the minimum, disconnect the floppy drives, disconnect the CDROM, FD, HS, etc. Try booting then and then. If it behaves better then I would add the extra RAM back, boot again. if good, then add a floppy and continue like that. You may find the culprit that way. If it misbehaves without anything hooked up, then its likely an issue with the MB. I would check jumpers, power connector in that case. You may have a resource conflict and not even know it, or bad floppy cable, bad HD cable, etc. By building your way back up and making sure each piece you add back completely works you will have a fully checked out and potentially well configured machine if you take the time to make sure everything is set correctly.
Click to expand...
So while removing and disconnecting the floppy drive
i found the cable had a couple of shiny spots and there are 2 or 3 places i can see the WIRES...
where it was worn down. i put some liquid tape on them and today i'll put it back in.
I don't know if it was shorting out touching the metal cover or chassis.

I have one other floppy cable strap but its for newer MB's and floppys and has one pin hole covered and the
486 has that pin on the MB so it can't go in the plug.
besides you can't just use a regular cable because the floppy kind has that section that is flipped , like a crossover.

from what i have been reading it still may be a corrupt bios but haven't found an acceptable download available yet
to reflash, i have found the new chips.
 
 
Good to hear they work.
it is a 486 phoenix bios i want to use it on, does it have codes for them?
Do you by any chance have a link to some of the codes for them you might share.
It says the pamphlet has some codes so hopefully, it has some for the phoenix bios in there.

I'll order one today or tomorrow.
 
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