can't find info on my 8088 motherboard anywhere, not even totalhardware99!

[Mike Chambers]

i've checked every picture on th99 very closely and not one matches my board. theres no real identifying numbers or letters on it. it just is apparently some generic(i guess) mobo with a fujitsu clone 8088 (says (c)Fujitsu '82 and (c)Intel '78 under that)

anybody know any other good mobo ID sites??

if this helps, when i turn it on it says this:

T U R B O - X T
=-=-=-=-=-=-=
4.770 / 8 MHz

then it shows a list of ISA cards in the card slots and then tells me to insert a disk, but alas, i have no suitable disk adapter boards for it. :( :( :( :( :(

[Luke]

It's propably the same to mine and Dongfeng's one, it's on TH99.

http://www.resoo.org/docs/_hardware/th99/m/U-Z/31541.htm

Is that your board?

[Chris2005]

what specific info could you possibly need though? If it's a true clone, and granted there were minor variations even amongst those, there shouldn't be much more info you'd need then the generic info that's out there.

[Mike Chambers]

It's propably the same to mine and Dongfeng's one, it's on TH99.

http://www.resoo.org/docs/_hardware/th99/m/U-Z/31541.htm

Is that your board?

nope :(

mine has the CPU and NPU sockets switched from those, and it has SW2 where SW1 is... now here's the weird part. it has SW3 and SW4 (to control RAM, switches between 640 KB and 256 KB) but there is no SW1 anywhere on the board lol.

P4 is correct, mine does has a speaker output there, but next to it is another 4 output pins (as i found out through trial and error, they are floppy and HD LED connectors)

[Mike Chambers]

what specific info could you possibly need though? If it's a true clone, and granted there were minor variations even amongst those, there shouldn't be much more info you'd need then the generic info that's out there.

i was just curious as to the specifics of what the SW1 dip switches do... it turns on as it is, but i'd like to know.

[Chris2005]

perhaps you can provide a picture. It may not even be a "clone". Fujitsu did make the Micro-16s which although based on an 8088, was anything but a clone, and is quite rare, especially in this country. Compare the chip positions to a standard motherboard, and if it's way different, it ain't even a clone.
And of course, just cuz it has a Fujitsu 8088 doesn't mean the whole board is by Fujitsu.

[Mike Chambers]

yeah i was wanting to provide a picture... i let my sister borrow my digital cam though. i should get it back tonight. i DO have a pic of part of the board i already took, but its just the topleft corner of it. here's what i got though. i'll post a pic of the whole thing later.

http://rubbermallet.org/8088.jpg

[Mike Chambers]

i wouldn't be able to use a western digital 16-bit ISA MFM/floppy controller, would i? afaik, 16-bit extensions are only used to access data > 1 MB, right? and i'm pretty sure an 8088 motherboard like this would be only looking for a 360 KB 5-1/4" floppy drive right?

so, since 360 KB is less than 1 MB, this might work? or am i completely mistaken?

i hope i can get this running, i want to play Janitor Joe how it was meant to be :)

[Luke]

You can try, many 16 bit ISA cards can work in 8 bit mode, but eg. FDD HD controllers will support only DD media, because they don't have BIOs extension.

16-bit extensions are only used to access data > 1 MB, right?

What do you mean?

Have you suitable video card?

[Mike Chambers]

You can try, many 16 bit ISA cards can work in 8 bit mode, but eg. FDD HD controllers will support only DD media, because they don't have BIOs extension.



What do you mean?

Have you suitable video card?

yes, i have an 8-bit cirrus logic VGA card that i've already used on it.

what i meant by that though, was that i thought i had read that the extra 16-bit pins on most ISA disk controller cards were only used when data being accessed was above the 1 MB mark on the disks.

(i do have DD 5-1/4" media btw... only one disk like that, but it's in great condition, i've never seen an error on it)

[Chris2005]

umm ain't that keyboard connector in totally the wrong place for a stock pc/xt? Seems it would interfere with the power supply there. I'm persuaded you definately have something else. Maybe a Fujitsu Micro-16S mobo, maybe something else altogether.

[Mike Chambers]

umm ain't that keyboard connector in totally the wrong place for a stock pc/xt? Seems it would interfere with the power supply there. I'm persuaded you definately have something else. Maybe a Fujitsu Micro-16S mobo, maybe something else altogether.

im positive it's a PC.

http://rubbermallet.org/8088boot.jpg

[Chris2005]

you're right, I goofed. being that the mobo doesn't take up the entire bottom of the case, the position of the k/b connector won't interfere with the p/s. Sowwy Chollie

[Mike Chambers]

you're right, I goofed. being that the mobo doesn't take up the entire bottom of the case, the position of the k/b connector won't interfere with the p/s. Sowwy Chollie

yeah its not very tall, i'm not using a ruler or anything but it seems like it couldn't be much taller than 1.25 to 1.5 feet or so.

[Mike Chambers]

ok here i have taken a better picture of the motherboard if anybody has can figure something out from this. i recently saw a picture of a siemans turbo 8 motherboard that looks similar. chips are all in the same place, but the two switches by the RAM in that pic were off-white in color, not blue like mine... however, it may just be a minor manufacturing discrepancy... i.e. they were not able to get enough blue switches when that particular one was made, or whatever... who knows. i could be completely wrong about that being the same model.

anyway, here's that picture of my board:
http://rubbermallet.org/8088mobo.jpg

[dongfeng]

If only the colour of the switches where different, it's very normal to use different ones!

[modem7]

I think I've found it, or at least it's predecessor.
Have a look at the board in TH99 described as "Turbo PC" by "PCs Limited, Inc.".
Everything is there and in the right locations.
Maybe when IBM released the XT, this board's manufacturer released an upgraded version of the board named, "Turbo XT".

[Mike Chambers]

I think I've found it, or at least it's predecessor.
Have a look at the board in TH99 described as "Turbo PC" by "PCs Limited, Inc.".
Everything is there and in the right locations.
Maybe when IBM released the XT, this board's manufacturer released an upgraded version of the board named, "Turbo XT".

omg, you found it! wow.... even though that one says 7.33 MHz and mine's an 8 MHz... otherwise its exactly the same. at first i wasnt sure because of the P3 connector, but then i saw it said P3 may not be present on all boards.

yup, this is the one. you ROCK! :-P