MS-Dos

Recently we moved and I found an un-opened box of MS-DOS 5.0 upgrade. I don't even recall buying this, but it must have been just before the time Windows was released. Started me thinking.... Should I load this on an old 386?

Dale

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DAB over 10 years ago

It should work on the 386 and might work on 486 standard motherboards.

I think version 5 was a fix just before they came out with MSDOS 6.0 to host Windows 3.1.

Been a lot of years since then.

DAB
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clem57 over 10 years ago in reply to DAB

Would it be a blast to catalog how many modern machines can run MS/PC-DOS? I wonder a contest of sorts.
LOL
Clem
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jack.chaney56 over 10 years ago in reply to clem57

Many cases for the new PCs and laptops is, you need to get an "outboard" 3 1/2" floppy drive to load the OS. Most of the releases for DOS were not on CD, and most of the new systems don't come with floppy drives. In fact, many of the newer devices are network based, and don't come with CDs either.
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COMPACT over 10 years ago in reply to DAB

The first modems I used were this speed and acoustically coupled to the telephone handpiece.
This made it easier to get Australian regulatory approvals rather than direct attachment.
To get Australian regulatory approvals for directly connected modems the designs needed to provide 4kV isolation and other protection measures to ensure that the phone line remained safe as not to increase the risk of electric shock to any linesmen working.
The reason for 4kV isolation rather than 1.5kV isolation as used in the USA is because in Australia we have very long telephone wires (mostly in remote areas) that could plausibly induce rather large voltages.

With FSK the speed crept up to 1200 half duplex on two wires and 1200 full duplex on 4 wires, 1200/75 on two wires. (to CCITT standards)

The speed increased to 2400 baud using PSK (Phase shift keying).
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DAB over 10 years ago in reply to dwinhold

I started with 110 and 300 baud connections.

We thought 9600 was a tremendous improvement.

DAB
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dwinhold over 10 years ago in reply to COMPACT

My first modem for my 8088 was a 1200 baud. It was top speed at the time.
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dwinhold over 10 years ago in reply to COMPACT

My first modem for my 8088 was a 1200 baud. It was top speed at the time.
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COMPACT over 10 years ago in reply to DAB

The first modems I used were this speed and acoustically coupled to the telephone handpiece.
This made it easier to get Australian regulatory approvals rather than direct attachment.
To get Australian regulatory approvals for directly connected modems the designs needed to provide 4kV isolation and other protection measures to ensure that the phone line remained safe as not to increase the risk of electric shock to any linesmen working.
The reason for 4kV isolation rather than 1.5kV isolation as used in the USA is because in Australia we have very long telephone wires (mostly in remote areas) that could plausibly induce rather large voltages.

With FSK the speed crept up to 1200 half duplex on two wires and 1200 full duplex on 4 wires, 1200/75 on two wires. (to CCITT standards)

The speed increased to 2400 baud using PSK (Phase shift keying).
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DAB over 10 years ago in reply to dwinhold

I started with 110 and 300 baud connections.

We thought 9600 was a tremendous improvement.

DAB
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