Re: [M100] Model 102 - Help needed: OPTION ROM stopped working

[Brian White]

Sounds like likely a simple mechanical problem of bent pins not making good
contact.
Do all the pins in the socket make good contact with the rom?

You obviously didn't do anything too bad like kill the 5v supply in the
102 or kill the chip if both the 102 still runs and the chip still works
in other machines.

One thing you can do just to verify the mechanical contact between the
socket and the rom is, just insert the rom and continuity test each pin
from the socet to the rom adapter. There is enough socket pin
still exposed to touch a meter probe to the socket pin whike the rom is
plugged in, and you should be able to get
the other meter probe to touch the pad on the rom adapter without touching
the
socket pin if you're careful, or touch the pin on the chip but remember
to account for the pin re-mapping for some pins. Basically individually
test the continuity from the socket to the chip adapter for each pin.


Another thing you can do to test the electronics feeding most pins
inside the 102 without taking everything apart, is check with a
continuity tester setting on a multimeter, between equivalent pins on
the option rom socket and the system bus connector on the back. Only a
couple
pins like /CS and /OE are going to be isolated just to the socket. vcc,
gnd, address and data lines are all shared.

Get the pinouts for both ports from the service manual
https://archive.org/details/tandy102servicemanual/page/n27/mode/2up
Wow, Never noticed the 102 service manual barely even mentions the
option rom socket. No pinout or interface description like all the other
ports. But you can get the pinout from the schematic, top center page
68, and the system bus over to the right same page. So you can see AD0
is pin 11 on the optrom and pin 5 on the bus connector.

The ALE, /CS, and /OE pins won't have any copy but the rest will. To test
those few pins you'll need more than a meter, you'll need a scope to tell
if they pulse while you try to access the opt rom. But at least a cheap toy
scope is good enough for these speeds. But that's getting fancy and you can
do the simpler stuff first.

-- 
bkw


On 11/27/22 08:31, Georg Käter wrote:
> Dear all,
>
> one of my Model 102 does not recognize OPTION ROM or REX anymore. I´ve
> tried the moduls
>
> in a M100 and an other M102 and the modules are working as expected.
>
> What I did before was trying a self assembled ROM adapter in the OPTION
> ROM socket which might
>
> have cause a shortcut or something else and might finally has destroyed
> something.
>
> Except from this the M102 runs fine so far, but after a CALL63012 the
> system just hangs and needs a reset
>
> Now my question: Which part or pins I can check easily to identify and
> solve the problem.
>
> Thanks in advance for any hints
>
> Regards
>
> Georg
>
> Georg Käter
> Gangolfsweg 44
> D-52076 Aachen
> Tel.: +49  2408 7194987
> Fax.: +49  2408 7196758
> Mobil: +49  171 4839954
> E-Mail   :
>
> georg.kae...@gk-engineering-services.de
> 
>
> *Vertraulichkeitsinformation:
> *Diese Nachricht ist vertraulich. Die Informationen dieser Nachricht
> sind ausschließlich für die persönliche
> und vertrauliche Verwendung durch den/die oben genannten Empfänger
> bestimmt. Wenn Sie kein beabsichtigter
> Empfänger sind, bitte lesen, kopieren und verwenden Sie die Nachricht
> nicht. Machen Sie sie nicht anderen
> zugänglich. Bitte informieren Sie uns umgehend über den Zustellfehler
> und senden Sie die Originalnachricht
> per E-Mail an uns zurück.
>
> *Confidentiality Notice:
> *This message is confidential. The information contained in this message
> is intended only for the personal
> and confidential use of the recipient(s) named above. If you are not the
> intended recipient, please do not
> read, copy, or use it and do not disclose it to others. Please inform us
> immediately of the delivery error
> and return the original message to us via e-mail.

bkw

Re: [M100] Looking for Model 200 on/off switch

[Scott Lawrence]

i found one switch model that was really close to the right size.  it's a
push-on/push-off so you either have to remember to re-toggle it, or open it
up and remove the latch.
If you search on "20Pcs Latching 7X7MM Mini Tactile Push Button Switch
On-Off DIP-6PINS
"
 you'll find the ones I have here. :)

On Tue, Nov 29, 2022 at 8:52 PM  wrote:

> Hi, Jeff.
>
> I have some parts from T200s.   I’ll private email you.
>
> Bob
>
> *From:* M100  *On Behalf Of *
> bir...@soigeneris.com
> *Sent:* Saturday, November 26, 2022 9:24 AM
> *To:* m...@bitchin100.com
> *Subject:* [M100] Looking for Model 200 on/off switch
>
>
>
> Anyone have a Model 200 parts machine that would not mind parting with the
> on/off switch mounted on the keyboard? Someone sent me a M200 to repair
> which has a bad switch.
>
> Thanks,
>
> Jeff Birt
>


-- 
Scott Lawrence
yor...@gmail.com

Re: [M100] Looking for Model 200 on/off switch

[birt_j]

Thanks Bob,

 

The machines owner says he does have a switch he can send me. 

 

The machine had an odd failure mode, it would not turn off, even with a
known good keyboard and switch. It turns out it was caused by a bad memory
battery causing the system to not reset properly. I have seen M100s et. Al.
do strange things with a bad memory battery, but this was a new one on me.

 

Jeff

 

 

From: M100  On Behalf Of b...@pigford.org
Sent: Tuesday, November 29, 2022 5:38 PM
To: m...@bitchin100.com
Subject: Re: [M100] Looking for Model 200 on/off switch

 

Hi, Jeff.

I have some parts from T200s.   I'll private email you.

Bob

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of
bir...@soigeneris.com  
Sent: Saturday, November 26, 2022 9:24 AM
To: m...@bitchin100.com  
Subject: [M100] Looking for Model 200 on/off switch

 

Anyone have a Model 200 parts machine that would not mind parting with the
on/off switch mounted on the keyboard? Someone sent me a M200 to repair
which has a bad switch.

Thanks,

Jeff Birt

Re: [M100] Model 102 - Help needed: OPTION ROM stopped working

[Gregory McGill]

bad connections? try reseating it? does it have the 'buffer' either a small
piece of wood or cardboard between the bottom of the socket and the rex?
every time I've had this issue it had worked loose on one or more
connections

On Tue, Nov 29, 2022 at 1:02 PM Georg Käter <
georg.kae...@gk-engineering-services.de> wrote:

> Dear all,
>
>
>
> one of my Model 102 does not recognize OPTION ROM or REX anymore. I´ve
> tried the moduls
>
> in a M100 and an other M102 and the modules are working as expected.
>
> What I did before was trying a self assembled ROM adapter in the OPTION
> ROM socket which might
>
> have cause a shortcut or something else and might finally has destroyed
> something.
>
> Except from this the M102 runs fine so far, but after a CALL63012 the
> system just hangs and needs a reset
>
> Now my question: Which part or pins I can check easily to identify and
> solve the problem.
>
>
>
> Thanks in advance for any hints
>
>
>
> Regards
>
> Georg
>
> Georg Käter
> Gangolfsweg 44
> D-52076 Aachen
> Tel.: +49  2408 7194987
> Fax.: +49  2408 7196758
> Mobil: +49  171 4839954
> E-Mail   :
> georg.kae...@gk-engineering-services.de
>
>
> *Vertraulichkeitsinformation: *Diese Nachricht ist vertraulich. Die
> Informationen dieser Nachricht sind ausschließlich für die persönliche
> und vertrauliche Verwendung durch den/die oben genannten Empfänger
> bestimmt. Wenn Sie kein beabsichtigter
> Empfänger sind, bitte lesen, kopieren und verwenden Sie die Nachricht
> nicht. Machen Sie sie nicht anderen
> zugänglich. Bitte informieren Sie uns umgehend über den Zustellfehler und
> senden Sie die Originalnachricht
> per E-Mail an uns zurück.
>
>
> *Confidentiality Notice: *This message is confidential. The information
> contained in this message is intended only for the personal
> and confidential use of the recipient(s) named above. If you are not the
> intended recipient, please do not
> read, copy, or use it and do not disclose it to others. Please inform us
> immediately of the delivery error
> and return the original message to us via e-mail.
>

Re: [M100] Looking for Model 200 on/off switch

[bob]

Hi, Jeff.

I have some parts from T200s.   I'll private email you.

Bob

From: M100  On Behalf Of
bir...@soigeneris.com
Sent: Saturday, November 26, 2022 9:24 AM
To: m...@bitchin100.com
Subject: [M100] Looking for Model 200 on/off switch

 

Anyone have a Model 200 parts machine that would not mind parting with the
on/off switch mounted on the keyboard? Someone sent me a M200 to repair
which has a bad switch.

Thanks,

Jeff Birt

Re: [M100] Model 102 - Help needed: OPTION ROM stopped working

[Stephen Adolph]

Hi,
I would suggest the following-
Make sure all the little springs are in contact with REX#.
Give that a try.

Steve


On Sunday, November 27, 2022, Georg Käter <
georg.kae...@gk-engineering-services.de> wrote:

> Dear all,
>
>
>
> one of my Model 102 does not recognize OPTION ROM or REX anymore. I´ve
> tried the moduls
>
> in a M100 and an other M102 and the modules are working as expected.
>
> What I did before was trying a self assembled ROM adapter in the OPTION
> ROM socket which might
>
> have cause a shortcut or something else and might finally has destroyed
> something.
>
> Except from this the M102 runs fine so far, but after a CALL63012 the
> system just hangs and needs a reset
>
> Now my question: Which part or pins I can check easily to identify and
> solve the problem.
>
>
>
> Thanks in advance for any hints
>
>
>
> Regards
>
> Georg
>
> Georg Käter
> Gangolfsweg 44
> 
> D-52076 Aachen
> Tel.: +49  2408 7194987
> Fax.: +49  2408 7196758
> Mobil: +49  171 4839954
> E-Mail   :
> georg.kae...@gk-engineering-services.de
>
>
> *Vertraulichkeitsinformation: *Diese Nachricht ist vertraulich. Die
> Informationen dieser Nachricht sind ausschließlich für die persönliche
> und vertrauliche Verwendung durch den/die oben genannten Empfänger
> bestimmt. Wenn Sie kein beabsichtigter
> Empfänger sind, bitte lesen, kopieren und verwenden Sie die Nachricht
> nicht. Machen Sie sie nicht anderen
> zugänglich. Bitte informieren Sie uns umgehend über den Zustellfehler und
> senden Sie die Originalnachricht
> per E-Mail an uns zurück.
>
>
> *Confidentiality Notice: *This message is confidential. The information
> contained in this message is intended only for the personal
> and confidential use of the recipient(s) named above. If you are not the
> intended recipient, please do not
> read, copy, or use it and do not disclose it to others. Please inform us
> immediately of the delivery error
> and return the original message to us via e-mail.
>

Re: [M100] Unusual Cassette

[B 9]

By the way, if you suspect it may be a TRS-80 Model I or Model III
cassette, you can drop the .wav file into your browser here:

https://www.my-trs-80.com/cassette/

That webapp is powered by Lawrence Kesteloot's trs80-cassette npmjs library
 for converting Model I and
III cassettes. From the description of how it works
,
it seems like one should be able to recognize those tapes by checking for
different frequencies.

By the way, according to the product description in the 1984 Radio Shack
catalog
,
the Model 100's cassettes are interchangeable with the Model 4.

—b9

On Sun, Nov 27, 2022 at 3:45 PM B 9  wrote:

> Interesting archaeological dig. Are you able to post the .wav files of the
> cassettes?
>
> "DS" error is, in my experience, what one sees from garbled data (like a
> serial line without XON/XOFF flow control). I believe it technically means,
> the m100 saw data it recognized, but it didn't see a line number first, so
> it must be a "Direct Statement". So, that could mean that the cassettes are
> corrupted or perhaps were recorded on a cassette deck that was out of
> alignment. (Homebrew tapes might need to be played slightly faster or
> slower.)
>
> But I think that corruption is unlikely. Does the DS error happen at the
> beginning of the program? If so, that'd imply to me that it's not a BASIC
> program at all. Or perhaps, as you suggested, it is a tape from a different
> machine architecture.
>
> I don't have a cassette deck, so I don't have any experience with it, but
> I am surprised that the file is not loading in the TEXT editor using F2
> (LOAD) CAS: as I had hoped that that would be able to load any file, even
> a corrupted one. Perhaps the M100 cassette format keeps a filetype (similar
> to .DO, .BA, .CO) and TEXT will refuse to read binary files.
>
> —b9
>
>
>
> On Fri, Nov 25, 2022 at 7:48 PM Jason White  wrote:
>
>> I just bought a few tapes on eBay, gambling that they may have some
>> obscure software on them. One of the tapes had a label with a filename that
>> ended in .DO, so it was an educated guess.
>>
>> Two of the three tapes have files that my Model 100 can "see", but none
>> of the files load, with the operation interupted by a DS error. I had this
>> problem loading a program by PCSG, which was operator error. I was supposed
>> to load one of those programs by going into TEXT and loading (F2) it from
>> within there. These programs aen'e loading from there either.
>>
>> I have also tried  CLOAD and LOAD"CAS: from within BASIC to no avail. I
>> am not certain these programs are for a Model 100, but they sure "sound"
>> like TRS-80. One of the tapes has a "program" in front of the program I am
>> trying to load that doesn't sound like the rest of the them and the
>> computer does not see that one. It's a much higher pitch, and doesn't have
>> the breaks every few seconds that TRS-80 tapes have.
>>
>> One other thing one of the programs does is that the Model 100's relay
>> drops out everytime the noise drops for that second or two and then pulls
>> back in. Does the Model 1 use the same .do that the 100 does? (I think they
>> don't use extensions because they use different commands for basic vs
>> machine programs, but?)
>>
>> One tape has three files on it: PMEXP, PMACT, and PMTSKD. They all have
>> filenames six letters or less. The other tape has a file calles CASSET,
>> which is also six letters.
>>
>> I am using AC adapters with both the tape player and the computer, and
>> I've typed sound off before starting trying to load. The tape player is a
>> CCR82, and the volume is set to P, which typically gives me good results
>> (but these are home brew tapes).
>>
>> Any other tips or suggestions would be appreciated.
>>
>> Thanks,
>>
>> J White
>>
>>

Re: [M100] Unusual Cassette

[B 9]

Interesting archaeological dig. Are you able to post the .wav files of the
cassettes?

"DS" error is, in my experience, what one sees from garbled data (like a
serial line without XON/XOFF flow control). I believe it technically means,
the m100 saw data it recognized, but it didn't see a line number first, so
it must be a "Direct Statement". So, that could mean that the cassettes are
corrupted or perhaps were recorded on a cassette deck that was out of
alignment. (Homebrew tapes might need to be played slightly faster or
slower.)

But I think that corruption is unlikely. Does the DS error happen at the
beginning of the program? If so, that'd imply to me that it's not a BASIC
program at all. Or perhaps, as you suggested, it is a tape from a different
machine architecture.

I don't have a cassette deck, so I don't have any experience with it, but I
am surprised that the file is not loading in the TEXT editor using F2
(LOAD) CAS: as I had hoped that that would be able to load any file, even a
corrupted one. Perhaps the M100 cassette format keeps a filetype (similar
to .DO, .BA, .CO) and TEXT will refuse to read binary files.

—b9



On Fri, Nov 25, 2022 at 7:48 PM Jason White  wrote:

> I just bought a few tapes on eBay, gambling that they may have some
> obscure software on them. One of the tapes had a label with a filename that
> ended in .DO, so it was an educated guess.
>
> Two of the three tapes have files that my Model 100 can "see", but none of
> the files load, with the operation interupted by a DS error. I had this
> problem loading a program by PCSG, which was operator error. I was supposed
> to load one of those programs by going into TEXT and loading (F2) it from
> within there. These programs aen'e loading from there either.
>
> I have also tried  CLOAD and LOAD"CAS: from within BASIC to no avail. I am
> not certain these programs are for a Model 100, but they sure "sound" like
> TRS-80. One of the tapes has a "program" in front of the program I am
> trying to load that doesn't sound like the rest of the them and the
> computer does not see that one. It's a much higher pitch, and doesn't have
> the breaks every few seconds that TRS-80 tapes have.
>
> One other thing one of the programs does is that the Model 100's relay
> drops out everytime the noise drops for that second or two and then pulls
> back in. Does the Model 1 use the same .do that the 100 does? (I think they
> don't use extensions because they use different commands for basic vs
> machine programs, but?)
>
> One tape has three files on it: PMEXP, PMACT, and PMTSKD. They all have
> filenames six letters or less. The other tape has a file calles CASSET,
> which is also six letters.
>
> I am using AC adapters with both the tape player and the computer, and
> I've typed sound off before starting trying to load. The tape player is a
> CCR82, and the volume is set to P, which typically gives me good results
> (but these are home brew tapes).
>
> Any other tips or suggestions would be appreciated.
>
> Thanks,
>
> J White
>
>

[M100] Model 102 - Help needed: OPTION ROM stopped working

[Georg Käter]

Dear all,
 
one of my Model 102 does not recognize OPTION ROM or REX anymore. I´ve tried 
the moduls
in a M100 and an other M102 and the modules are working as expected.
What I did before was trying a self assembled ROM adapter in the OPTION ROM 
socket which might
have cause a shortcut or something else and might finally has destroyed 
something.
Except from this the M102 runs fine so far, but after a CALL63012 the system 
just hangs and needs a reset
Now my question: Which part or pins I can check easily to identify and solve 
the problem.
 
Thanks in advance for any hints
 
Regards
Georg

Georg Käter
Gangolfsweg 44
D-52076 Aachen
Tel.        : +49  2408 7194987
Fax.        : +49  2408 7196758
Mobil    : +49  171 4839954
E-Mail   : georg.kae...@gk-engineering-services.de 

Vertraulichkeitsinformation:
Diese Nachricht ist vertraulich. Die Informationen dieser Nachricht sind 
ausschließlich für die persönliche
und vertrauliche Verwendung durch den/die oben genannten Empfänger bestimmt. 
Wenn Sie kein beabsichtigter
Empfänger sind, bitte lesen, kopieren und verwenden Sie die Nachricht nicht. 
Machen Sie sie nicht anderen
zugänglich. Bitte informieren Sie uns umgehend über den Zustellfehler und 
senden Sie die Originalnachricht
per E-Mail an uns zurück.

Confidentiality Notice:
This message is confidential. The information contained in this message is 
intended only for the personal
and confidential use of the recipient(s) named above. If you are not the 
intended recipient, please do not
read, copy, or use it and do not disclose it to others. Please inform us 
immediately of the delivery error
and return the original message to us via e-mail.

Re: [M100] Unusual Cassette

[Brian K. White]

Try them with wav2cas
You'll need to capture them to a wav file with a sound card, and that 
means maybe trying different recording levels to get a full signal but 
not so full it clips. Probably leave the player on P and only adjust the 
line-in level in you pc's mixer app or a real sound recording app like 
Audacity.


http://knut.one/wav2cas.htm


On 11/25/22 22:47, Jason White wrote:
I just bought a few tapes on eBay, gambling that they may have some 
obscure software on them. One of the tapes had a label with a filename 
that ended in .DO, so it was an educated guess.


Two of the three tapes have files that my Model 100 can "see", but none 
of the files load, with the operation interupted by a DS error. I had 
this problem loading a program by PCSG, which was operator error. I was 
supposed to load one of those programs by going into TEXT and loading 
(F2) it from within there. These programs aen'e loading from there either.


I have also tried  CLOAD and LOAD"CAS: from within BASIC to no avail. I 
am not certain these programs are for a Model 100, but they sure "sound" 
like TRS-80. One of the tapes has a "program" in front of the program I 
am trying to load that doesn't sound like the rest of the them and the 
computer does not see that one. It's a much higher pitch, and doesn't 
have the breaks every few seconds that TRS-80 tapes have.


One other thing one of the programs does is that the Model 100's relay 
drops out everytime the noise drops for that second or two and then 
pulls back in. Does the Model 1 use the same .do that the 100 does? (I 
think they don't use extensions because they use different commands for 
basic vs machine programs, but?)


One tape has three files on it: PMEXP, PMACT, and PMTSKD. They all have 
filenames six letters or less. The other tape has a file calles CASSET, 
which is also six letters.


I am using AC adapters with both the tape player and the computer, and 
I've typed sound off before starting trying to load. The tape player is 
a CCR82, and the volume is set to P, which typically gives me good 
results (but these are home brew tapes).


Any other tips or suggestions would be appreciated.

Thanks,

J White



--
bkw

[M100] Looking for Model 200 on/off switch

[birt_j]

Anyone have a Model 200 parts machine that would not mind parting with the
on/off switch mounted on the keyboard? Someone sent me a M200 to repair
which has a bad switch.

Thanks,

Jeff Birt

Re: [M100] custom key mapping generator for Tandy 200

[Georg Käter]

Hello together,
 
1st thanks to Steve for the nice spreadsheet, it makes it quite comfortable to 
create
customized keyboard mapping maybe for T10x also.
Question: I´ve now the idea to create a custom font set i.e. CodePage 437 
compatible.
In T102 ROM I´ve found @7711H a 1248d byte range representing the font map, but
where to find it in M200 ROM?

Thanks in advance for any hint
 
Regards
Georg 

 
== Ihre Nachricht ==

von      : Stephen Adolph 
gesendet : Samstag, 19. November 2022, 01:18
an       : "m...@bitchin100.com" 
Betreff  : [M100] custom key mapping generator for Tandy 200

__ Originalnachricht ___


> So, to recap,

> 1.  We have a spreadsheet to create custom key maps for Tandy 200

> 2.  Separately, we are trying to confirm in hardware that a single 27C64 rom 
> can be substituted for M13, to implement the custom keymap.

> I would encourage the approach for dealing with different keyboards on other 
> machines.

> Keep in mind.. if the actual characters themselves change, the modification 
> is deeper.  Such is the case for M10 for example.  (Or just use the usa 
> character set to make it easy).


> Thanks
> Steve

__ Ende Originalnachricht __