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27 votes
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Could you manually eject a floppy quick enough to prevent data loss?

I did that all the time on the Apple II. The reason it worked was that some time was needed for the motor to spin up to the correct speed, and that the Disk II didn't really have an "eject" mechanism, ...
dirkt's user avatar
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19 votes
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Who coined the nickname "Trash-80" and what was the source of their animosity?

Since when do kids need a reason to trashtalk? Especially with an abbreviation calling for such an interpretation? And fans of competing computers where even more eager to jump the train. The war didn'...
Raffzahn's user avatar
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16 votes

Could you manually eject a floppy quick enough to prevent data loss?

Theoretically, yes. The disk needs time to spin up to speed before reading or writing can occur. While it varies between platforms and drives, it's at least a couple hundred milliseconds. That's ...
RETRAC's user avatar
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11 votes
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In TRS-80 parlance when talking about disks, what are "granules" and "lumps"?

OK, this is very dusty material in my memory, so I'm relying a bit on Google/Wikipedia here. I may be able to find some of my printed documentation, but it will take a while. The granule was the ...
jeffB's user avatar
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11 votes

Who coined the nickname "Trash-80" and what was the source of their animosity?

The Model 1 was a self contained computer that plugged in to, essentially, a TV set. And that was all well and good, if feature light (16K RAM, Cassette port, limited text and graphics). But it was ...
Will Hartung's user avatar
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8 votes
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How much control of TRS-80 Model III disk drives was possible from its Cassette (ROM) BASIC?

ROM BASIC does not support any handling of floppies at all, but System ROM allows boot thru it's function table. Of course one could handle the disk controller 'manually' from BASIC - which is what ...
Raffzahn's user avatar
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7 votes
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How to use virtual cassettes with Matthew Reed's TRS-80 Model III emulator? (TRS32)

I got the same result -- it's a bug. It does work at low-baud rate so you can use that as a workaround. Type L when the Cass? prompt appears at startup. Looking at the output file the emulator is ...
George Phillips's user avatar
6 votes
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What to check before powering on TRS80 Model III in unknown condition

The TRS-80 Model III is a pretty robust machine but there is one common problem -- the RIFA capacitors on the power supply. These were paper-type and very often short out producing lots of smoke ...
George Phillips's user avatar
5 votes

What is the layout of the directory track on a TRS-80 Model I/Model III disk?

The best resource is a book called TRS80 Disk and other mysteries. I found a copy online at: https://ia801709.us.archive.org/28/items/TRS-80_Disk_and_Other_Mysteries_1980_Harvard_C._Pennington/TRS-...
Joe Lepore's user avatar
5 votes

Who coined the nickname "Trash-80" and what was the source of their animosity?

I can tell you as a former Radio Shack employee, we used to call them that as well. That said, I am happy with my still functioning, very modified Mod I.
Joe Lepore's user avatar
4 votes

What to check before powering on TRS80 Model III in unknown condition

First, do a visual inspection. Make sure it's reasonably clean, no liquid damage etc. Check for foreign objects and possible shorts. Then check the power supply. It's easier with external types but ...
user's user avatar
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3 votes
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Do TRS-80 Model I and Model III load and execute /CMD files using specific memory addresses?

/CMD files are a series of tagged records. Some record types have meaning only for certain features of some of the TRS-80 DOSes. Only two seem important for loading and executing them. byte: ...
hippietrail's user avatar
  • 6,666
2 votes

What to check before powering on TRS80 Model III in unknown condition

This is not a full answer, feel free to improve it. Let's start with the basics: Use ESD protection when touching any PCBs. Clean the PCBs.Inspect for any physical damages. Inspect all capacitors to ...
UncleBod's user avatar
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2 votes
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What is the process for TRS-80 Model I & III to boot from disk?

After Googling this for an hour or two and not finding much, I have found something solid just minutes after posting my question! From page 40 of TRS8BIT volume 09 issue 02 from June 2015 there is an ...
hippietrail's user avatar
  • 6,666
2 votes

Could you manually eject a floppy quick enough to prevent data loss?

As a former floppy disc repair technician, you can indeed do this, but you risk damaging the read-write heads and/or the alignment of the heads, rendering the drive unusable until it is repaired or ...
Bjorgen Eatinger's user avatar
1 vote

How much control of TRS-80 Model III disk drives was possible from its Cassette (ROM) BASIC?

I found one reference which exercises the floppy drives from the ROM-only BASIC, in just the ways I was looking for, the SAMS Photofact guide for the Model III. The simplest "script" it provides is ...
natevw's user avatar
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