VOGONS


My 286 motherboard collection

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Reply 20 of 33, by sparky4

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sexy collections and 286 mobos! 😁

wwww

Reply 21 of 33, by HanJammer

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sparky4 wrote on 2022-07-25, 21:28:

sexy collections and 286 mobos! 😁

Thanks... it was long time ago... since them I got like several times more of them... They wouldn't fit on the floor of my living room anymore... I really need to scale this collection down I guess ;D

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Reply 23 of 33, by sparky4

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i could use a 16 or preferably higher mHz 286 mobo that can support 4mb or ram or more

wwww

Reply 24 of 33, by sparky4

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here is mine! 😁

wwww

Reply 25 of 33, by pan069

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I'd love to get a 286 with onboard IO. It will free up a slot on the riser in the low-profile IPX case I use for my 286.

Whats the opinion of the VLSI chips sets? Any good? Preference of VLSI over e.g. Headland? I only have Headland based boards atm.

Reply 26 of 33, by maxtherabbit

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I'm a big fan of the VLSI 286 chipsets. The 200 series one (not pictured) is blazing fast

Reply 27 of 33, by HanJammer

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pan069 wrote on 2022-08-01, 20:32:

I'd love to get a 286 with onboard IO. It will free up a slot on the riser in the low-profile IPX case I use for my 286.

Whats the opinion of the VLSI chips sets? Any good? Preference of VLSI over e.g. Headland? I only have Headland based boards atm.

Read here: http://www.dosdays.co.uk/topics/get_a_286_run … e_a_386_pt1.php

Generally early chipsets are pretty much like NEAT - slow and nothing special. Later are pretty fast/good.

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Reply 28 of 33, by karakarga

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Good old stuff. I have an Amiga 500 to 286 PC emulator board by Vortex at that time, placed 2 parts to the midst of Motorola 68000 CPU and an Amiga chipset. Hmm was it an AT or XT I don't remember now. It works at ohhh, 16 or 20 MHz something, without a co-processor. It can managed to run PW without a hard drive, under bootable DOS 3.x floppy. PW was a MS Word like writing (word processor) program. I needed it, to print out from a PC printer which were easier to find at computer shops or at school.

Reply 29 of 33, by HanJammer

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karakarga wrote on 2022-11-23, 21:37:

Good old stuff. I have an Amiga 500 to 286 PC emulator board by Vortex at that time, placed 2 parts to the midst of Motorola 68000 CPU and an Amiga chipset. Hmm was it an AT or XT I don't remember now. It works at ohhh, 16 or 20 MHz something, without a co-processor. It can managed to run PW without a hard drive, under bootable DOS 3.x floppy. PW was a MS Word like writing (word processor) program. I needed it, to print out from a PC printer which were easier to find at computer shops or at school.

286 was AT. I have Vortex GoldenGate 386SX emulator in my Amiga 2000. This thing is so damn slow even in comparison to some mediocre 12 or 16Mhz 286. I also have A2088 and it's horribly slow as well. PC emulation on Amiga isn't the best things to do even if in fact emulator cards are in practice a single board computers...

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Reply 30 of 33, by Martin85

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HanJammer wrote on 2019-03-21, 23:32:
treeman wrote:

nice big collection, it looks like some1 butchered the socket on the non working last board at the bottom, im curious most of the boards have batteries removed except like 3 that have the green barrel still attached

Yup, fresh batteries I soldered in place of the old, desoldered ones. I simply used these boards in some builds I quickly dismantled. But it was before I started using external batteries, so I no longer use the onboard ones...

What type of battery are you using for the external one?

Reply 31 of 33, by HanJammer

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Martin85 wrote on 2022-11-24, 08:14:
HanJammer wrote on 2019-03-21, 23:32:
treeman wrote:

nice big collection, it looks like some1 butchered the socket on the non working last board at the bottom, im curious most of the boards have batteries removed except like 3 that have the green barrel still attached

Yup, fresh batteries I soldered in place of the old, desoldered ones. I simply used these boards in some builds I quickly dismantled. But it was before I started using external batteries, so I no longer use the onboard ones...

What type of battery are you using for the external one?

Whatever available (depends on battery holder and batteries I have). For non-chargahle batteries I usually add a schottky diode (contrary to popular believe many motherboards do charge on external battery header).

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Reply 32 of 33, by Martin85

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Good info! I ordered some time ago sime double 2032 holders... I modded one for the 386 with two diodes and a resistor to bring down the voltage closer to 4-5volts... Do you think I could go without this? Maybe only a diode to stop current going into the cells?

Reply 33 of 33, by HanJammer

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Martin85 wrote on 2022-11-24, 09:48:

Good info! I ordered some time ago sime double 2032 holders... I modded one for the 386 with two diodes and a resistor to bring down the voltage closer to 4-5volts... Do you think I could go without this? Maybe only a diode to stop current going into the cells?

A diode is enough for EXT_BAT with two 2032 cells or 3-4 AA or AAA cells (non-rechargable) - I usually use 3 batteries. Typical (not Schottky or germanium) diode has around ~0,6-1,2V voltage drop. Also resistor is not an element for dropping the voltage - it's not it's function (it's for limiting current).

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