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You are right ! But TASM expanded it to 4 SHR's: 741 E1DF D0 E8 D0 E8 D0 E8 D0+ shr al, 4 Turbo Assembler Version 4.1 10/21/17...

In reading, there is a belt in these drives. I ordered an assortment of drive belts off flea-bay for less than $2.00 shipped. I supposed its worth...

http://bartlettlabs.com

Awesome thanks!!!

These upgrades have me truly excited about upgrading my M4! And, because of that, I would love to see just how this machine can become, and what...

The service manual is online. I'm looking at it now. Do you have a voltmeter and know how to use one? You would have to open the display up and slide...

I must have awakened in an alternate reality. "SHR AL,4" isn't an 8088/8086 instruction--it belongs to the 80186+ category. A V20 can execute it,...

When moving a double density drive to an AT-class system, you need to be aware of a possible problem: See the 'Floppy disk drive - Pin 34' section at...

You should let Plasma know about this "bug". He is a member here and is the programmer for the Super PC/XT Bios.

There's going to come a time and place when "old TV guys" or people with long experience working on CRT's aren't either around anymore or hard to...

Thanks guys, Ill try the hd drive on the 386. Otherwise I will swap a drive out ouf the 5150. Thanks. Len

Fixed, I had that on there before.... Anyway, I am in the States.

No. Odd that such a basic flaw exists. Sounds like it wasn't tested. I wonder what other surprises await you.

Because the source code says for the IBM_PC flag: ...

Update the 'Location' field in your profile. If you are in Australia, I will freely post to you a boot disk.

Why do you consider this a bug? Because of differences between PC-class motherboards and XT-class motherboards, normally a motherboard BIOS is...

Hmm.. reading the manual more carefully.. it wants -12V brought on first, then 12V, then 5V.. not all at once.. darn... maybe I broke something with...

Thank you, KC9UDX. The power supply, when disconnected from the mobo and drive, powers up and produces >+11.8 VDC, approx. -12VDC and >+5.1 VDC. ...

Checked the cable but still a no go. I know its getting something from the computer because when you unplug the video cable the screen goes off.

The motherboard I use has both PCI and ISA slots and is from 1998.

The motherboard is from 1997 so I'm pretty sure it's not PCI 1.0.

Two threads now referring to these disks that can control our future.. ? Stone, where are you ?

AFAIK all diskettes have at least one index hole; as Chuck explained, soft sector just means there is only one index hole whereas most hard sector...

I might be misunderstanding the question, sorry! I have a PSU with this MMD that puts out everything I require.. +5V, +12V and -12V. And I have...

I didn't use an drivers for my PCI USB card. Just plugged it in.

If you've got a conforming PCI slot (not PCI 1.0), you should be fine. Make sure you can find drivers for it.

Hello, yes the M24 mouse is just quadature mouse. So you also can adapt Commodore Amiga, Atari ST mices. You can even find ST/Amiga mouse to USB...

Would something like this work? https://www.newegg.com/Product/Product.aspx?Item=N82E16815124007 Or would it need to be USB 1.0?