On Fri, Mar 16, 2018, 10:11 AM Brian White wrote:
> Ah! These are good, thank you! Already I can see why you have no twists. I
> won't be able to show you what I mean for a little while but I have
> pictures of at least 5 or 6 different manufactures of dip40 idc connector
> (the
Ah! These are good, thank you! Already I can see why you have no twists. I
won't be able to show you what I mean for a little while but I have
pictures of at least 5 or 6 different manufactures of dip40 idc connector
(the blue one in your pics) and I can show how the pins on yours are
different fro
ted together. I don't see any twists, so I wonder if
>>> maybe someone modified the 102/200 cable to remove the twists and turn it
>>> into an M100 extension; in that case both cables connected together would
>>> work in an M100 but the 102/200 part would not work
bus. When I connect the 102-looking cable from the DVI and the cable
>> on the 100 together, everything works together.
>>
>> I guess I still need a cable for the 102...
>>
>> On Wed, Mar 14, 2018 at 7:55 PM, Chris Kmiec wrote:
>>
>>> :) Ok, maybe
Now that is interesting.
--
bkw
On Thu, Mar 15, 2018, 8:26 PM Chris Kmiec wrote:
> And that's what it appears to be doing - both cables connected work great
> with my m100, but the short DVI to system bus part does not respond to
> anything on my 102.
>
>
somewhere, or else these are
funky connectors that don't map the wires to the pins the same way every
other connector in the world does at least today.
On Thu, Mar 15, 2018 at 5:17 PM, Brian White wrote:
> There is a single sheet insert that came with one of my DVI manuals that
> shows
There are at least a few different "build your own ram upgrade" articles on
club100 and other archives of old forum posts, and in magazines too I think
but those are hard to search.
Here's one that is not one of the old original ones I was thinking of, but
looks ok.
http://digilander.libero.it/ra
one for 102! Almost afraid to turn it on, but that
> will have to wait until tomorrow when I have a minute to myself...
>
> On Mon, Mar 12, 2018 at 9:57 AM, Brian White wrote:
>
>> The strain relief clip specifically I mean, when you snap all 3 parts of
>> an idc connector tog
Plus when you search for the original part number or generic size code, you
get nimh batteries that claim to be drop-in replacements for the
size/form/terminals code.
They can't know the details of every possible circuit the original parts
were used in, and yet they feel safe saying that the new ni
, ... until all 20 pairs are in the slot. Then get them all into
the male connector and crimp it. Then pick apart, or just break off the
female connector that was just used as a jig to hold the wires in place.
--
bkw
On Mon, Mar 12, 2018, 10:50 AM Brian White wrote:
> http://tandy.wiki/D
http://tandy.wiki/Disk/Video_Interface
It's a pain but it's doable.
The pictures there don't show the process, only the final result
unfortunately. I used a sacrificial 40pin female idc connector with the
strain relief clip as a guide to hold all the split & twisted wires into a
flat ribbon so t
maybe modern cheapness means they will leak in
5 years.
On Fri, Mar 9, 2018 at 4:43 PM, John R. Hogerhuis wrote:
>
>
> On Fri, Mar 9, 2018 at 1:20 PM, Brian White wrote:
>
>>
>> It's arguable both ways though. You could say that by removing the
>> battery, you ar
I meant to say, the only harm it does is, it harms the next owner, in that
they may or may not like the idea that their M100 has been modified in this
way.
It's arguable both ways though. You could say that by removing the battery,
you are removing all possibility of it leaking an corroding the m
Only to the next owner.
On Fri, Mar 9, 2018 at 1:28 PM, Earl Evans wrote:
>
>
> On Fri, Mar 9, 2018 at 9:18 AM, John R. Hogerhuis
> wrote:
>
>>
>> But maybe with REX, doing without the nicd Is ok since you can always
>> quickly restore a backup.
>>
>> — John.
>>
>
> I do have a REX, and would
yone with even a limited degree of soldering
> ability.
>
>
>
> On 1 Mar 2018 10:41 p.m., "Scotty Brown" wrote:
>
>> Be keen to see how it goes Brian!
>>
>> Cheers,
>>
>> Scotty
>>
>> On 1/03/2018 19:38, Brian White wrote:
&g
google or ebay search "FRW-8.5 belt"
Pay about $9 or less, or keep looking.
On Mar 1, 2018 11:50 PM, "Scotty Brown" wrote:
> On the TPDD2 belt replacement - did you order something specific (that I
> can then also order :) ) ?
>
> Cheers,
>
> Scotty
>
>
> On 2/03/2018 14:33, Anthony Coghlan wro
Yes that 0v from the tpdd is exactly one of the things that seems really
wrong to me, regardless that it apparently "works".
I mean, it's OK in the particular case of the M100, because the M100
contains pull-downs internally that will pull a floating line down to -5.
Floating or open, or tied to 0
I wonder if those mystery 3-legged parts Marty described in the real cable
weren't simply plain old diodes in SOT-23 package?
https://www.digikey.com/product-detail/en/panasonic-electronic-components/DB3X314K0L/DB3X314K0LCT-ND/2354721
On Thu, Mar 1, 2018 at 4:38 AM, Brian White wrote:
I might have a good DigiKey cart to build one Marty Goodman cable now. I
just ordered one, so I'll know if this is actually a good kit when I get it.
IE, do the pins actually work in the 8-pin housing, is the polarity bump on
the 8-pin housing big enough or small enough, is that 6mm id insulation
t
On Feb 27, 2018 9:34 PM, "John R. Hogerhuis" wrote:
On Tue, Feb 27, 2018 at 6:24 PM, Brian White wrote:
> Yes, except most generic level shifters (like that sparkfun one) don't
> have enough channels to do all the flow control lines, so you might get
> rts/cts but n
go and report back (still would love an original cable
>> is anyone has one!).
>>
>> Cheers,
>>
>> Scotty
>>
>> On 28/02/2018 08:50, Brian White wrote:
>>
>> The cable requires at minimum a few diodes, besides the necessary pin to
>> pin
The cable requires at minimum a few diodes, besides the necessary pin to
pin wiring.
The real original cable appears to use resistors and transistors, and there
is a schematic someone came up with a long time ago that uses diodes and
resistors, and at least one person has claimed since then that th
n't get it any where near complete like TS-DOS,
> but I have attached it here for reference in case anyone is interested.
>
> Ken
>
> On 2/27/18 4:06 AM, Brian White wrote:
>
> Here you go. It worked. Except note all the caveats at the top of the text
> file.
>
> h
I meant this link
https://drive.google.com/open?id=1k-sWo0Hpok2GFM37PFdQKdf8063NIJ_2
On Tue, Feb 27, 2018 at 7:06 AM, Brian White wrote:
> Here you go. It worked. Except note all the caveats at the top of the text
> file.
>
> https://drive.google.com/open?id=0Bys6eLbSbYyhOW5UOWhlcTR
, the ram image would just
be the same as this 102 image, and might not work on anyone else's 100.
I do have the means to put a stock rom back in a 100, and I do have the
means to do this on a 200, so I may do those too sooner or later.
--
bkw
On Mon, Feb 26, 2018 at 6:37 PM, Brian White w
I could do that sure. It's an interesting question. Should be perfectly
possible to "install" the dvi dos by some other means than having the dvi
do it, but I don't know if anyone has done it. But even without that, a
full ram dump seems like it should be at least one sort of brute-force way
to do
to see if has the 200 files on it, although I don’t
> have plans to get a T200. I had one a few years ago and sold it.
>
> Thanks again!
>
> Randy
>
> On Feb 19, 2018, at 2:42 AM, Brian White wrote:
>
> The manual, which is on-line btw, does mention somewhere in there tha
nd both
> have the write-protect tab on them.
>
> thanks!
>
> By the way, the system is consistently booting now. Just had to shake the
> dust off of it, I guess.
>
> Still would like to see if I can get the other DVI box working.
>
> Randy
>
>
> On Feb 17, 201
Also make sure your new disks are double density, 360K, not high density,
1.2M.
On Feb 17, 2018 10:24 PM, "Brian White" wrote:
The easiest way is using the backup program on the system disk.
It's possible but I think it's probably more difficult with a modern pc. I
don
now only 1 seems to work. I’m worried now only having one
> working disk.
>
> How do I back it up? Is there a way to do that with the DVI? Can I
> create one in a different disk drive, like the drive in the TRS-80 Model 4P?
>
> thanks
>
> Randy
>
> On Feb 17, 201
Dvi contains a z80, but it doesn't run an OS and wildly outclasses the M100
itself in every possible metric of functionality.
It was common for peripherals to equal the host at least in the earliest
days. You'd have a z80 in the desktop and a z80 in the 300baud acoustic
modem.
Perhaps it's just a
What?
On Feb 17, 2018 8:38 PM, "Darryl Pruett" wrote:
It never had these situation
This sounds consistent with Fugu's idea about old capacitors. It sounds
like both dvi's are marginal, but one is slightly better than the other,
and one of your M100's is slightly better than the other, and so with the
two best ones combined, it just barely works, sometimes.
I would check that vol
I agree with every part of this.
On Feb 17, 2018 5:12 PM, "Ken Pettit" wrote:
> All of the discussion about getting DVI to work and a modern DVI solution
> made me start thinking about TDock again and what it was that made me stop
> working on it. Largely is was simply lack of time, but also I
off it would be
residual charge in the cap or leakages somewhere else on the board giving
the 0.83V.
Well it was worth checking. It looks like the +5V is getting across and
is very healthy. Need to ponder some more on why your DVI is not working.
From: M100 on behalf of Brian White <
That is interesting.
I have just confirmed that there is continuity from pins 1 & 40 on the M100
end of my DVI cable, all the way to the + side of C67 inside the DVI, And
continuity from pins 2 & 39 all the way to the - side of C67 (and every
other ground in the dvi, including the case)
C67 is a
If you get the 3 lines of microsoft version info on the tv screen, that
does prove the drive is working at least well enough to read the first
sector.
When you say nothing happens, let me get this exactly:
You get both the "please wait" and the "insert system diskette" prompts.
You close the dri
But your picture that he asked about is not using this cutout cover.
On Fri, Feb 16, 2018 at 6:06 PM, Mike Stein wrote:
> The DVI came with a replacement cover that has a cutout for the cable:
>
>
>
> - Original Message -
> *From:* Fugu ME100
> *To:* m...@bitchin100.com
> *Sent:* Friday
It's perfectly interesting and valid as far as I'm concerned.
The only part that's annoying is that you seem to want it to work by magic
or something. You seem to hope that someone else will sit down and slog
through the long and difficult job of figuring out something complicated so
that you don'
the DVI. Would that be difficult to write? Hasn't anybody
> dis-assembled the code for the DVI? You'd only need the video-portion.
>
>
>
> Greetings from the TyRannoSaurus / Jan-80@work
>
>
>
> *From:* M100 [mailto:m100-boun...@lists.bitchin100.com] *On Behalf Of *Brian
>
tput via the system bus. I had
thought of using the GPIO-pins of a Raspberry Pi for that. As the R.Pi can
also emulate a TPDD, you'd have a virtual DVI replacement, there.
Greetings from the TyRannoSaurus
Jan-80 """""
@ work ( @ @ )
--.
Yes the center pin is negative. Same is true for most of the related
accessories like the tape drives ctr-41, ctr-80, ccr-81, ccr-82, ccr-83,
the tpdd & tpdd2 disk drives, trp-100 printer, etc. They all take 6vdc,
center negative, same 5.5x2.1mm barrel plug.
--
bkw
On Feb 12, 2018 3:02 PM, "mega
Do you mean, a burner that a m100 can operate? Or a burner that can burn
the types of chips that you would use in a m100?
I suggest a TL-866 because it supports 27C256 (everything else in the world
does also), connects by usb, powered by usb, and the software to run it is
easy to use, and there is
That won't work. I don't remember where I read this, but I read that the
system rom has calls for certain functions but they are just stubs. The rom
only contains the stub of a call that says "open CRT: for writing" which
just says go to some address and do whatever that address says. Normally
that
Nothing like having the modern platform itself also go obsolete. I guess
it's happened a few times over by now. There's plenty of "bridge to the
present" things which themselves run in MS-DOS.
On Feb 7, 2018 11:29 PM, "John R. Hogerhuis" wrote:
>
>
> On W
Derp I thought you were asking about the palm pilot, sorry.
On Feb 7, 2018 11:24 PM, "Brian White" wrote:
> I believe there is a palmos tpdd server.
>
> On Feb 7, 2018 9:49 PM, "Mike Stein" wrote:
>
>> Just curious: how would you use it?
>>
>
I believe there is a palmos tpdd server.
On Feb 7, 2018 9:49 PM, "Mike Stein" wrote:
> Just curious: how would you use it?
>
> m
>
> - Original Message -
> From: "Randy Kindig"
> To:
> Sent: Wednesday, February 07, 2018 5:20 PM
> Subject: Re: [M100] List of wanna haves
>
>
> > Agreed!
mber of the 'reversed' one. They're still in business and
> maybe still make it; might be worth an inquiry:
>
> Yamaichi FCP-40-03
>
> m
>
> ----- Original Message -
> *From:* Brian White
> *To:* m...@bitchin100.com
> *Sent:* Monday, February 05, 2018 1:59
I just made a working cable for DVI for Model 200 that doesn't need any
twists in the cable and is polarity keyed and shrouded.
It's annoying that you have to solder two parts together, but the end
result is a cable that is keyed and shrouded, AND fits in a 200 (also 102
but 200 is the difficult o
The most commonly found data sheet for the HD44103 lcd driver chip on the
lcd pcb is pretty low quality and doesn't include a pinout for the QFP-44
package used in the M100.
I extracted a nicer version of the data sheet from a larger combined pdf
(Hitachi-LCD.pdf) that had sheets for several relat
Ever since the DVI cable thread recently I've been looking for DIP IDC
connectors that have the flipped pinout like the original Tandy cable has,
so you could just crimp the cable without any pain in the neck twisting
every pair of wires.
Well by now I have found 5 different manufacturers of a dip
The boot disk for 200 boots everything, 100, 102, 200. It has 2 sets of
files, the original files for 100 plus another set of the same files for
200. Yes the cable is the same for 102 and 200, at least for the pins. It's
not necessarily the same for the plastic shroud. The opening around the bus
co
Do you have a copy of your manual?
>
> Randy
>
>
>
> On Jan 27, 2018, at 12:44 AM, Brian White wrote:
>
> Resend because on my end at least it put it in spam...
>
> https://youtu.be/Mt6AmyLKkXQ
>
> Sorry you can't read the screens and I blather too much. But
Resend because on my end at least it put it in spam...
https://youtu.be/Mt6AmyLKkXQ
Sorry you can't read the screens and I blather too much. But it shows the
full working procedure, so you can satisfy yourself that we aren't doing
anything different from each other.
--
bkw
https://youtu.be/Mt6AmyLKkXQ
Sorry you can't read the screens and I blather too much. But it shows the
full working procedure, so you can satisfy yourself that we aren't doing
anything different from each other.
On Jan 26, 2018 11:43 AM, "Randall Kindig" wrote:
> hi, all,
>
> I’m having an issu
sue is here that when the M100 is restarted
nothing happens on the DVI. No reaction at all. The drive does not light
up and does not attempt to read the disk to load BASIC.
Thanks
On Jan 26, 2018, at 4:51 PM, Brian White wrote:
"and the screen of the M100 is now routed to the monitor&q
"and the screen of the M100 is now routed to the monitor"
The screen is only switched to the monitor if you issue the command in
basic to do it.
SCREEN 1,1
I'll record a video tonight of the boot process just to remove all question
marks if you're doing everything right.
The steps are spelled ou
27;ve been watching
EEVBlog
BOLTR/AvE
Frantone
Mr Carleson's Lab
OpenTechLab
AT&T archives
...
On Wed, Jan 24, 2018 at 12:36 AM, John R. Hogerhuis
wrote:
> Chooch'n?
>
> Did you come by the word honestly or were you impaired by AvE?
>
> ;- )
>
> On Tue, Jan 23, 2018
ked the various voltages on the display
> board (Vdd, V2, 3, 4, 5, 6, Vee).
>
> m
>
> - Original Message -
> *From:* Brian White
> *To:* m...@bitchin100.com
> *Sent:* Tuesday, January 23, 2018 3:22 AM
> *Subject:* Re: [M100] diagnose
>
> Well I don't know
om the bad unit. One with a good lcd board, one with the bad
lcd board it came with.
bad lcd
https://photos.app.goo.gl/4QDlMt1YbEd6pQbl1
good lcd
https://photos.app.goo.gl/fpF9cxmsRVeueMUy2
good times
https://photos.app.goo.gl/QLV1mZsNqsu4eXkA2
On Sun, Jan 21, 2018 at 1:05 AM, Brian White wrot
-
> *From:* Mike Stein
> *To:* m...@bitchin100.com
> *Sent:* Saturday, 30 December 2017, 6:53
> *Subject:* Re: [M100] diagnose
>
> They were different models:
> 26-3801 M100, 8K + 24K optional
> 26-3802 M100, 24K + 8K optional
> 26-3803 T102, 24K + 8K opt
that is very cool
Network tpdd is insane. It means you can have a file server for M100 in
your basement just like for your modern laptops.
On Jan 19, 2018 5:50 AM, "John R. Hogerhuis" wrote:
> A couple other things:
>
> Besides setting the termcap, In order to run W3M and browse the web, I had
This is why I tested out all those actual cables, exactly for this reason,
to have a known good reference that anyone can buy off the shelf with no
more possible mystery about the wiring. Everything is done all in the one
part. No gender changers, no null-modem adapters. No possible mysteries. If
y
Any rs232 pinout diagram. The only special thing about the m100 is that the
25pin plug is DTE (like any other computer, vs a modem or other peripheral)
and female instead of male, and so the 25pin plug on the cable must be
male, and so you just have to go by pin numbers and signal names, not
physic
Nice catching it just before instead of just after. Someone 20 more years
from now thanks you. Hell maybe they will have access to an archive of this
list and actually know where it came from and who to thank literally. :)
On Jan 9, 2018 10:52 PM, "Kevin Becker" wrote:
> I picked up my M102 off
This just leaves two questions:
The carat is an ordinary valid character in a M100 filename. So how does
mcomm avoid renaming my file which I named with a carat in the first place,
and turning it into an asterisk when loaded back on to a m100?
And of course there is the name collision problem men
I'm not asking why replace the old battery. I'm asking why use a cap if it
will have the same disadvantages plus an extra disadvantage of only
delivering a fraction of the run time?
I replace all mine with new nimh batteries.
I could see dropping to a few hours or days of sleep time if you gain t
;
> - start the DVI & the monitor
>
> - start the Model T without the DOS
>
> - in BASIC, type SCREEN 1,1
>
> Does the DVI react ?
>
>
>
> If it does, I have my answer. Next thing to do, is start scanning codes
> with a Raspberry Pi hooked up to the I/O bus o
If you aren't going to use a solid state cap that can't ever leak a
corrosive substance onto the board, then why trade a sleep time of months
for a sleep time of days?
On Jan 4, 2018 10:20 AM, "Fugu ME100" wrote:
> My two cents worthŠ.
>
> In terms of supercaps it depends on the type. If they a
Is asterisk the only "bad" character that can ever appear in a filename
produced by a M100?
The standard encoding was for 2 reasons:
1: Handle any possible kind of unwanted data, not just the single thing you
percieve today.
2: When you encounter the munged file by itself, it has meaning and you
Suggestion, before too many people start relying on it, replace the
random/arbitrary substitution with some standard encoding like urlencoding.
On Tue, Jan 2, 2018 at 4:04 PM, Kurt McCullum wrote:
> Jim,
>
> Probably because I was working briefly with T-Base when developing the
> Android versio
Prove the ftdi (and the android driver for it) by just using it outside of
mcomm to download a big file from a pc to the android device, change it's
name, and upload back to the pc, and then compare the files. I don't know
if any android terminal emulators support xmodem or zmodem or kermit, nor
ho
On Dec 29, 2017 11:53 PM, "Fugu ME100" wrote:
In the T102 and M100 there are SRAM modules that are plugged into sockets,
I am not familiar with the M10, but these modules are easy to remove from
the socket and do not need to be desoldered.
That's not necessarily true. If a particular unit was
There are pre-made polarity reverser cables that have male and female ends,
and righ-angle. They seem to be marketed for guitar effects pedals. I found
them to get an off-the-shelf way to power a Model 600.
The ones I got had red plugs but here is a different one
http://ebay.com/itm//232510759498
Holy crap that CHIP board has wifi, and runs full linux. That means it
could not only be a TPDD, but you could set up an incron (inotify-cron) job
that watches the tpdd share directory to process commands sent from the
M100 by just writing a special file that the incron job watches for.
So from th
And for a nads-alike, the "modern machine" can be one of the various tiny
single-board linux machines.
https://getchip.com/pages/chippro
It's kind of upside-down using a computer that's 8000 times more powerful
than a m100 as a disk drive for an m100, but whattayagonnado?
Someone was working on a
I think the general most practical answer to that is a tpdd server.
You need a serial cable wired a particular way and a usb-serial adapter :
http://tandy.wiki/Model_100_102_200_600_Serial_Cable
(IE: get the C2G cable and the Tere Grande usb adapter shown there)
And a modern machine to run a tpdd
The club100 site is for archival purposes only at this point. You can't
actually order any thing from there.
There are no nads boxes. But there are several different projects you can
do that provide somewhat similar functionality, but it's all DIY. You can
run a tpdd server on a raspberry pi or int
I think the specs say 400ma (at 6v, 5v would draw more current to
compensate for the lower voltage) it will draw different amounts of power
depending on lots of things.
* is it currently trying to charge a dead internal batt?
* is it currently running software that uses both cpu and ram as much as
ver every ~300ms
>
> Brian: Can you please measure this 4 signals in the working unit?
> I'm doing a single capture, triggering on the falling edge of the reset
> (CH4).
>
> I hope to be closer to find the culprit :)
>
> Mauro
>
>
> On Dec 18, 2017, at 6:57 PM,
Rex is mostly just for roms.
You can *sort of* use rex as a pseudo ram expansion by using it's
backup/restore feature, but it's really not great for that, since you're
savingvand restoring backups not really switching between ram banks.
All the actual ram expansions I've seen are only for model 1
signals in the working unit?
> I'm doing a single capture, triggering on the falling edge of the reset
> (CH4).
>
> I hope to be closer to find the culprit :)
>
> Mauro
>
>
> On Dec 18, 2017, at 6:57 PM, Brian White wrote:
>
> Ah yeah I forgot to relabel a17. I
/usr/local/lib/tpddtool or similar. I'm not near that laptop right now to
give the exact details.
--
bkw
On Dec 24, 2017 3:04 PM, "Brian White" wrote:
That reminds me, there are tpdd clients that run on windows/mac/linux. You
could use a modern pc to test the TPDD by itself with a b
*Shrug*
> Short of finding a replacement cable, i don't like my chances of trying to
> make another cable and then spending days chasing my tail around on the
> chance its not the cable anyway.
> I think I'll just but the M102 and its drive to bed for a while.
>
> Thanks f
There was a schematic of the original cable somewhere but i can't find it.
You can try this one:
ftp://salsa.net/pub/M100SIG/Lib-09-PERIFERALS/TPDD.DO
The real cable has more active components in it than this, but the guy
claims it worked.
On Sat, Dec 23, 2017 at 10:29 PM, Mr Lurch
wrote:
> I a
> off purposes?
>
>
> On 22 December 2017 at 16:17, Brian White wrote:
> > These drivers are decades old and standard heavily used and tested and
> > common to all distributions. If a /dev/ttyUSB* exists at all, then udev
> did
> > everything and you're done thi
A few likely and easy first things to verify are:
Make sure you have a good drive belt. If you or someone didn't actually buy
a new FRW8.5 belt, then it needs one.
Make sure the disk is a DD type (720k), not HD (1.44M). DD have only one
hole in one corner. HD have two holes in two corners.
Make
These drivers are decades old and standard heavily used and tested and
common to all distributions. If a /dev/ttyUSB* exists at all, then udev did
everything and you're done thinking about drivers.
If you have more than one usb adapter from different manufacturers, and
they're both unreliable, the
17 3:16 AM, "Peter Vollan" wrote:
> The problem is, I do not know why my three other cables did not work,
> so I am skeptical of just spending money for another one.
>
> On 20 December 2017 at 21:49, Brian White wrote:
> > Get one of these cables (one of the 3 "idea
Get one of these cables (one of the 3 "ideal" ones, ie, get the cables2go
one. You almost certainly do not need any different usb-serial adapter, but
if you want then get the ftdi one linked there too.
I actually use an old and underpowered atom cpu netbook, so, speed/power of
the linux host is no
to at least toggle. It looks like M19 is bad. Any other lines
appear to be stuck?
From: M100 on behalf of Brian White <
bw.al...@gmail.com>
Reply-To:
Date: Monday, December 18, 2017 at 5:18 AM
To:
Subject: Re: [M100] diagnose
Last night I did a little more poking.
First, I looked at al
Mini_Board
>
> I like to use it with the saleae software, but to have 16ch instead of 8 I
> use Sigrok.
>
> Mauro
>
>
>
> Il 15.12.2017 12:56 Brian White ha scritto:
>
> On Dec 15, 2017 6:16 AM, wrote:
>
>>
>> BTW: Brian do you have a LA so we can c
Someone sent me a dump of the BASIC option rom for Model 600!
https://drive.google.com/open?id=16M1QHbd4WuJuhUGcG06JTVW2YfO-WpWr
--
bkw
On Dec 15, 2017 6:16 AM, wrote:
>
> BTW: Brian do you have a LA so we can compare the same signals on the ROM
> and RAM addressing/enabling on the working and not working
>
Sorry I am looking at them but hadn't picked one yet.
--
bkw
lways hated to see that in any step…..
What did the –5V measure on the meter? If it is not within spec neither
the LCD or buzzer will work.
From: M100 on behalf of Brian White <
bw.al...@gmail.com>
Reply-To:
Date: Sunday, December 10, 2017 at 11:30 PM
To:
Subject: Re: [M100] Fwd: Re: di
gt;
>
>
>
> On Dec 11, 2017, at 9:28 AM, Fugu ME100 wrote:
>
> Ah the “special tool” requirement always hated to see that in any step…..
>
> What did the –5V measure on the meter? If it is not within spec neither
> the LCD or buzzer will work.
>
> From: M100 on behal
the pins on the system bus so anyone with
an oscilloscope can do the same without opening the unit case...
On Dec 11, 2017, at 9:28 AM, Fugu ME100 wrote:
Ah the “special tool” requirement always hated to see that in any step…..
What did the –5V measure on the meter? If it is not within spec
instructions like “Check All IC’s”.
> :-)
>
> From: M100 on behalf of Brian White <
> bw.al...@gmail.com>
> Reply-To:
> Date: Friday, December 8, 2017 at 9:55 AM
> To:
> Subject: Re: [M100] Fwd: Re: diagnose
>
> I noticed something a couple days ago. Those noisy g
e problematic traces? Or a bad IC leaking current to ground?
>
> Can you measure the DC power consumption? It should be ~60-70mA IIRC.
>
> On Wed, Dec 6, 2017 at 10:14 PM, Brian White wrote:
> > After watching a youtube video about how to use an oscilloscope by
> sparkfun,
&g
relation to the cpu. Not a bad afe in the scope.
*chagrin*
--
bkw
On Dec 6, 2017 7:38 PM, "Brian White" wrote:
> This is the bobbing I was talking about. It's dumb for me to even be
> talking about it yet since I haven't even done a basic comparison check on
> some o
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