sexy collections and 286 mobos! 😁

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

They would look lovely framed on the wall.

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

here is mine! 😁

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.

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

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.

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.

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...

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?

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).

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?

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).