TRS80 Model 4P problem

From: Charles A. Davis <>
Date: Tue Feb 17 12:27:10 1998 wrote:
> I have a slightly wierd problem. Not sure if it is hardware or software.
> Ok, I turn the 4p on with no floppy in the drive. It says:
> The Floppy Disk Drive is not Ready. (in 3 languages, no less)
> I put in the TRSDOS 6 system disk, the system appears to boot,
> but the monitor looks like there is no sync. It is very fuzzy. I can type
> in the date, and enter a command (dir :1), and the system appears to
> do it.
> Why does actually getting booted up cause the monitor to be unusable?
There isn't (i think) anything in the way of instructions/operations
that _WILL_ do what you describe. But if through age, some of the video
components have drifted 'out of spec.', then it's possible that the
changing load on the power supply, might be the culprit. (The power
supply may be drifting 'from spec.' also.) [Ain't it fun, when we can
try and sort out all kinds of interdependent glitches.]

> Trying other disks in the drive, if they are not system disks, causes other
> messages to appear, perfectly readable.
> Any ideas?
> Kelly


He, who will not reason, is a bigot;       William Drumond,
he, who cannot, is a fool;                  Scottish writer
and he, who dares not, is a slave.              (1585-1649)
While he that does, is a free man!          Joseph P. 1955-
 (be sure to correct the return address when using 'reply')
Chuck Davis  /  Sutherlin Industries   FAX # (804) 799-0940
1973 Reeves Mill Road            E-Mail --
Sutherlin, Virginia 24594            Voice # (804) 799-5803
Received on Tue Feb 17 1998 - 12:27:10 GMT

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