FX3000 486 motherboard questions \ VOGONS

FX3000 486 motherboard questions

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First post, by deleted_nk

Posted on 2019-04-07, 02:17

deleted_nk Offline

Hi guys, recently I acquired a 486 DX33 system from a mate's shed. The system is working and in relatively good condition with 8MB of SIMM memory and a 540MB hard drive. Now I want to restore this system into a good condition of usability and convenience, however I need to know more about the motherboard it's got. All it says on it is 'FX3000 v1.0' and has an external battery module (thank god). Now for the questions:

1. Does it need to have rechargable batteries installed into the module? The pins on the motherboard send 5v out the battery connector, and I'm not sure if it'll like alkalines installed.
2. Can I use the cheap SD-IDE boards with the controller card? It's a winbond w8375f board and detects the full capacity of the 540MB WD hard drive. I'd much rather use an SD card because of the age of the hard drive and makes it easier putting files on there.
3. Will it support an upgrade to a DX2 66? It's got a 33mhz clock crystal on there, but again I'm not sure if that means a DX2 would run at the full 66mhz or cap out at 50mhz.
4. Would anyone know about the turbo display? It's showing 8 and 20mhz instead of the 33 the CPU's clocked at.

Reply 1 of 1, by pentiumspeed

Posted on 2019-04-07, 04:39

pentiumspeed Offline

Rank l33t

Rank: l33t
Posts: 3197
Joined: 2017-05-17, 23:17
Location: Great Northern: Canada.

each 4 pins group is for one segment of LED matrix, thus 1 jumper per segment for total of 7 segments = 7 jumpers total for one digit.

Now these 4 pins is grouped in a T, with common pin at (intersection of the T) as one of jumper's contact. This swing around to either of upper pin, right of the common pin or below that pin in 3 positions. Now either up or down can be used as turbo or turbo off, while jumper from the intersection pin and right of it to next to another pin jumper stays lit in either turbo or turbo off.

"X" marks the intersection of the T as common pin. Jumper this from x to one of "*". Experiment to see which mode it is in.

1[quote]
2*                    *                    *
3I                                        
4x    *    or       x----*             X       *
5                                          I
6*                    *                    *
7[/quote]

Cheers, pentiumspeed

Great Northern aka Canada.

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