Re: [M100] I/O error with disk drive

2018-08-24 Thread John R. Hogerhuis
Glad you got it working! And welcome to the list.

Btw please remember to trim emails to minimum necessary. Sometimes the
digest and quoted chains can be really long.

Cheers,

John.

-= Model T's Forever =-


[M100] I/O error with disk drive

2018-08-24 Thread Jesus R
t;>> special escape commands to break out into a command mode just like
> modems,
> >>>> telnet, ssh, cu etc all do, so you could always switch between
> functions
> >>>> from the M100 even after starting one.
> >>>>
> >>>> gahh ideas are sure easy to throw around :)
> >>>>
> >>>>
> >>
> >> --
> >> bkw
> >>
> >
> >
> > --
> > bkw
> >
> >
> >
> -- next part --
> An HTML attachment was scrubbed...
> URL: <http://lists.bitchin100.com/private.cgi/m100-bitchin100.
> com/attachments/20180823/f0461cd0/attachment-0001.html>
>
> --
>
> Message: 5
> Date: Thu, 23 Aug 2018 20:41:30 -0400
> From: Josh Malone 
> To: m...@bitchin100.com
> Subject: Re: [M100] Serial data receive problems
> Message-ID:
>  gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> On Thu, Aug 23, 2018 at 7:52 PM John Gardner  wrote:
> >
> > "Lack of proper transient protection" ...  Would'nt be the first time...
>
> But the RS232 input goes through 2 different ICs and a bunch of
> passives prior to the UART. Wouldn't it be more likely to fry the
> input buffer (level-shifter) or the MUX (that switches between modem
> and RS232)?
>
> -Josh
>
>
> --
>
> Message: 6
> Date: Thu, 23 Aug 2018 22:36:59 -0400
> From: Brian White 
> To: m...@bitchin100.com
> Subject: Re: [M100] New Age Digital Storage Box (NADSBox)
> Message-ID:
>  gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> That's what I would say if using an sbc (pi) instead of a microcontroller
> (arduino).
> But even these microcontrollers are more powerful cpus and have more ram
> than the host machine in this case, but then again, ever since day one,
> peripherals have always had their own cpus that were at least the
> equivalent of the host if not more, especially disk drives, modems, and
> printers. So, no not really.
>
> On Mon, Aug 20, 2018 at 4:34 PM Jeff Gonzales 
> wrote:
>
> > at this point is the m100 just a keyboard/dumb terminal?
> >
> > On Mon, Aug 20, 2018 at 4:31 PM, c646581  wrote:
> >
> >> I have a project that uses an Arduino Mega to emulate a TPDD.
> >>
> >> https://github.com/TangentDelta/SD2TPDD
> >>
> >> I have plans to eventually sell easy-to-use shields that provide the
> >> RS232 level shifting and SD card interface.
> >>
> >> On Mon, Aug 20, 2018, 16:02 Brian White  wrote:
> >>
> >>> A tpdd emulated in low level basic hardware in line with the tpdd
> itself
> >>> really appeals to me.
> >>>
> >>> I would love to try to make it work on a tinyduino, or maybe a gotek.
> >>> Tinyduino may not seem "basic" being so small and modern, but it's a
> >>> microcontroller not a PC. It doesn't run linux and systemd and bash and
> >>> getty and python and a tcp stack and ssl and X and gnome etc etc etc.
> >>>
> >>> The fact that an entire pc fits in a tiny space and uses no power and
> >>> costs $5 today thanks to the plain advancement over the passage of
> time, is
> >>> sort of beside the point. Sure it's practical, but it's not *elegant*,
> in
> >>> some intangible abstract mental way.
> >>>
> >>> You could run dlplus or laddie from an init script on an Omega2 and
> >>> stuff the entire thing inside of a db25 connector shell, and probably
> even
> >>> scavenge enough power right from the usb port with charge pumps, and
> the
> >>> entire thing would be small and cheap and relatively easy to do, since
> it's
> >>> just sticking a few existing things together like legos. Outwardly this
> >>> makes all the sense in the world. But it's just such a brute-force
> kind of
> >>> solution. I'd rather spend all kinds of time and effort to do the same
> >>> thing with a controller in place of the computer.
> >>>
> >>> Though, you can sure get a lot more functionality out of a computer,
> >>> like that virtual modem in mcomm. And the computer is infinitely more
> >>> end-user hackable. It would be neat to play with hacking together some
> sort
> >>> of front-end dispatcher script, kind of like inetd for serial or I
> guess
> >>> that would just be an amped-up getty, maybe even with an interactive
> menu
> >>> that you can access via T

Re: [M100] I/O error with disk drive

2018-08-24 Thread Brian White
This happens during what operation? Bootstrapping from the utility disk? Do
you know the disk is good? Does teeny or ts-dos work instead of whatever
unknown BASIC program that line number 10 came from? Is the serial cable
the original one ? (The cable has electronics inside, so if you don't have
the original one, then you have to google up "marty goodman tpdd cable" to
make one that will work.)

You could also try tpddtool from a modern pc.
http://trs80stuff.net/tpdd/
IE: Take a blank 720K (not 1.4M) disk and try the format command. This
eliminates a bad utility disk or a bad serial port on the 100 from the
equation.

On Fri, Aug 24, 2018 at 6:59 AM Jesus R  wrote:

> Team, after placing a new belt on the Tandy portable disk drive I still
> get an error when trying to initialize it:
>
> ?ao error in 10 trs 80
>
> It sits there and looks dead and is silent. I'll check the out of the
> power board next.
>


Re: [M100] I/O error with disk drive

2018-08-24 Thread Fugu ME100
Have you tried a cold boot of the model T?

The drive makes shows no activity at all?  No front light or spinning disk?

You could check the serial interface is good as you might of seen from Josh’s 
thread the serial port can and does fail.   If this is a TPPD-1 drive could 
also check the DIP switches are set correctly for boot.

From: M100 
mailto:m100-boun...@lists.bitchin100.com>> 
on behalf of Jesus R mailto:sonor...@gmail.com>>
Reply-To: mailto:m...@bitchin100.com>>
Date: Friday, August 24, 2018 at 3:59 AM
To: mailto:m100@lists.bitchin100.com>>
Subject: [M100] I/O error with disk drive

Team, after placing a new belt on the Tandy portable disk drive I still get an 
error when trying to initialize it:

?ao error in 10 trs 80

It sits there and looks dead and is silent. I'll check the out of the power 
board next.


[M100] I/O error with disk drive

2018-08-24 Thread Jesus R
Team, after placing a new belt on the Tandy portable disk drive I still get
an error when trying to initialize it:

?ao error in 10 trs 80

It sits there and looks dead and is silent. I'll check the out of the power
board next.


[M100] I/O error with disk drive

2018-08-21 Thread Jesus R
Kurt, you were right. Funny thing is I had it apart yesterday and even
after spinning the large pulley it looked like the belt was okay. Turns out
it was denigrated and what was left was tar in its place...what a mess to
clean it. I'll check out the link you provided next.

Thanks,

JR

On Tue, Tue, 21 Aug 2018 08:01:10 -0700, Kurt wrote:

The drive belt it likely broken. Mine wasn't but it was too stretched to
work. It's one of the common repairs that have to be done to get those
drives up and running.
Information on how to do that can be found here:
www.club100.org/library/sup/tddbelt.txt

Kurt