Leading Edge Fortiva 5000-with MB Daewoo cpc2800

[daewoo 2800]

hello,
newguy to your forum here, and i'm looking for a service manual cira. 1994
for a Leading Edge Fortiva 5000-with Daewoo cpc2800 motherboard.

i'm looking for a service manual if possible.

short of that does anyone know what the specs for the PC speaker are?
i find online 8ohm 0.5W 2" speakers would they work?
thank you for any help you can offer!

 

[esc2dos]

Have you found this yet?

Leading Edge Fortiva 5000 System Users Manual : Leading Edge Products Inc. : Free Download, Borrow, and Streaming : Internet Archive

Leading EdgeFortiva 5000 System Users ManualThe Fortiva was a Leading Edge 486 IBM Compatible sold in 1994.

archive.org

Not a lot of info for these machines online. Sadly.

I'm struggling to get it to recognize anything other than an actual Hard Drive
It doesn't see my SD-IDE or CF-to-IDE

I was hoping to find an update to the Bios on The Retro Web but this machine isn't even there.

Have you had any luck using anything other than a "spinning rust" Hard Drive?

 

[daewoo 2800]

thanks for the link ,, yeah i did find that a while back not sure where..
for HDD, i have a 1.6gb Maxtor and a 1.2gb Fujitsu as drive 1&2 respectively.
otherwise no but
i'm looking for an ISA to PCI card that only has 2 PCI slots. i have a Dell 4 slot but it
won't fit under the hood. i guess i should try the 4 slot one of these days.
then i can try a wifi card.

this page has 2 bios flashes for model M cira.86

minuszerodegrees.net

the 486 is a model D(for Daewoo MB)
the same bios is used in other PC's but there will be no Leading Edge
stuff on the screen when you boot up.

if you have the 486 heres a link to some bios chips

New M27C512-15XF1 27C512 64K x 8 UV EPROM CDIP28 x 1pc | eBay

We love to hear the voice of your advice!

www.ebay.com

i have the keyboard too, when i cleaned it, inside it had some really big dust balls, hair and was sticky, i hope it was coke cola....

 

[esc2dos]

With 2 hard drives, did you omit the CDrom? And are you stuck with the 503MB limit on those drives?

I tried once again to get it to recognize my CF and SD cards but to no avail. Even tried with a VLB controller card.
Using the program WhatIde in my floppy drive it does see the Cards, and I was able to start the Dos 6.22 install but it fails at 99% and wasn't recognized when I reboot.
I'm going to dedicate a full video to this machine.

This is what I've done so far

Such a strange machine, I've got 386 boards that LOVE the sd cards .. but this thing hates 'em.

I hope you can find an ISA-to-PCI adapter that fits, that would be very interesting to see if this picky machine will work with wifi.

All I have is the computer itself. It was dusty but otherwise in great shape.
Never can tell what might be lurking inside these old machines.

I find it curious that they put a 28pin Bios chip in that 32 pin socket, I might attempt putting in a 32Dip 27C010A (I've got a few extra from a PcChips board I'm fixing) with the current bios to see if that will work.
Otherwise I'll have to order some, thanks for that link.
I'd be curious as to which version of the Bios you have. I think mine said 1.03 I'll verify that today.

I intend on sending what I have on this Machine to the Retro Web (I'd imagine you are familiar with that site).
There's gotta be more people with this 486 out there than just you and I.
Hopefully someone has the latest Bios out there, but I might be stuck with what i have.

 

[esc2dos]

Here are some pics of my machine

 

[daewoo 2800]

yeah 1.03 on the bios.
both are one partition 1.6GB maxtor and a 1.2 fujitsu. i used auto LBA 1&2
Creative CD player is a SB16 sound card kit they sold
and the CD cable plugs into the sound card.

how does the L2 memory work? does it make the computer faster
with less lag time? where do you see improvements?

we both have a copy of the bios we just need to
figure out how to get it out of the chip .. 20yrs ago i overclocked a couple of boards
and the flashing program had an option to download yours for a backup

i tried one but it said" i want a newer version of windows, Dave" and i had to back out.

 

[esc2dos]

Cdrom through the Sound card, gotcha.

L2 cache definitely speeds the machine up. highly recommended.
Loads faster, redraws faster.
Cache chips are cheap enough, definitely worth it.
Mine came with 64Kb and I upped it to 256Kb.

The Bios chip in this machine is a UV EPROM
to extract the Bios "Rom" you can dump it with a Programmer (TL866 plus for instance)
You remove the Bios chip from the board insert it in the Programmer and save it that way.
If you want to reuse the same chip with another version of the Bios, you need to stick it in a UV box for 15 minutes and it deletes the previous Bios info.

I can do all the above, pretty easy once you get the gear and practice on a couple of chips.

 

[esc2dos]

This gives a description of the different kinds of Bios Chips.

COMPUTER BIOS HISTORY

The Computer BIOS History is presented including the original UV eproms, flash eproms, firmware hubs and the latest high speed SPI flash eprom chips.

www.arlabs.com

 

[daewoo 2800]

yes i saw the uv and flash- regular notes on them while checking them out.
I'll read up thanks for the link