Re: [M100] M100 Digest, Vol 115, Issue 24
Well, if that word is too strong for the list, then I'll just lurk in future and not participate. Message: 3 Date: Tue, 21 Jul 2020 22:12:04 -0700 From: "John R. Hogerhuis" To: m...@bitchin100.com Subject: Re: [M100] M100 Still active? Message-ID: Content-Type: text/plain; charset="utf-8" On Tue, Jul 21, 2020 at 9:25 PM Hiraghm wrote: C**p, I am SO sorry I forgot to change the subject of my post And the no-swearing rule. Careful! -- John. -- This email has been checked for viruses by AVG. https://www.avg.com
Re: [M100] Slim style DB25/DE9 connectors
Ok now I read it. Doesn't mean I'll remember. I forget stuff I write or create myself. Very cool though. -- John.
Re: [M100] tranch #2 of REXCPM is off the docks!
Oh Joy here too Steve, REXCPM arrived in later post. On way to work now. Will get it installed in the AM. Thanks, GregS <>< Jul 22, 2020 6:51:13 PM Stephen Adolph : > Great stuff Brian. Glad it arrived and is working for you. REXCPM > benefitted from a lot of good ideas from others. The cable harness and Molex > carrier add to the quality significantly. > > On Wednesday, July 22, 2020, Brian Brindle wrote: >> Just checked the mail ten minutes ago and found mine in the box! Have to >> say, very impressed with the quality of everything. Even enjoyed the extra >> effort and details in the initialization software. Fantastic work! >> >> Thanks for everything Steve! >> >> Brian >> >> On Thu, Jul 16, 2020, 2:17 PM John R. Hogerhuis wrote: >> >>> On Thu, Jul 16, 2020 at 7:36 AM Stephen Adolph wrote: >>> John, what flavor? T102 or M100?cheers > M100 please >>> >>> -- John. >>>
Re: [M100] tranch #2 of REXCPM is off the docks!
Great stuff Brian. Glad it arrived and is working for you. REXCPM benefitted from a lot of good ideas from others. The cable harness and Molex carrier add to the quality significantly. On Wednesday, July 22, 2020, Brian Brindle wrote: > Just checked the mail ten minutes ago and found mine in the box! Have to > say, very impressed with the quality of everything. Even enjoyed the extra > effort and details in the initialization software. Fantastic work! > > Thanks for everything Steve! > Brian > > > On Thu, Jul 16, 2020, 2:17 PM John R. Hogerhuis wrote: > >> >> >> On Thu, Jul 16, 2020 at 7:36 AM Stephen Adolph >> wrote: >> >>> John, what flavor? T102 or M100? >>> cheers >>> > >> M100 please >> >> -- John. >> >
Re: [M100] tranch #2 of REXCPM is off the docks!
Just checked the mail ten minutes ago and found mine in the box! Have to say, very impressed with the quality of everything. Even enjoyed the extra effort and details in the initialization software. Fantastic work! Thanks for everything Steve! Brian On Thu, Jul 16, 2020, 2:17 PM John R. Hogerhuis wrote: > > > On Thu, Jul 16, 2020 at 7:36 AM Stephen Adolph > wrote: > >> John, what flavor? T102 or M100? >> cheers >> >>> > M100 please > > -- John. >
Re: [M100] Slim style DB25/DE9 connectors
http://bitchin100.com/wiki/index.php?title=BCR_TTL_SERIAL_HACK this hack works well with 8085, based on SOD, I am working on an NSC800 version, so that "Z80" modified M100s can also transmit video data out the BCR port. Background: SOD pin, normally used to drive the cassette port, can be used as a bit banger Tx output. Wiring it directly to the BCR port makes a bi-directional TTL serial port. NSC800 does not have a CPU bit-banger port like SOD pin. So something else is needed. Turns out there is an unused I/O port, /Y1, on M100. That can also be used to generate bit-banged serial data. So, I am working on a version that uses the /Y1 port. code is slightly different, ..Steve
Re: [M100] Slim style DB25/DE9 connectors
It is a hack I published on the wiki. It is used to for example drive data to external video. I can see I need to make my posts more fun to read!!! On Wednesday, July 22, 2020, Kurt McCullum wrote: > BCR Out? I wasn't aware that the BCR had an output pin. > > On Wed, Jul 22, 2020, at 3:54 PM, Stephen Adolph wrote: > > yah, I got it working bi-directional but half duplex. which is acceptable > for TPDD protocol, but not normal RS-232. > > > On Wed, Jul 22, 2020 at 6:31 PM John R. Hogerhuis > wrote: > > > > On Wed, Jul 22, 2020 at 5:59 AM Stephen Adolph > wrote: > > > I used this board to send 57600baud serial data in/out of the BCR port. > > > Out? That's cool. I thought it was in only. > > -- John. > > >
Re: [M100] Slim style DB25/DE9 connectors
BCR Out? I wasn't aware that the BCR had an output pin. On Wed, Jul 22, 2020, at 3:54 PM, Stephen Adolph wrote: > yah, I got it working bi-directional but half duplex. which is acceptable > for TPDD protocol, but not normal RS-232. > > > On Wed, Jul 22, 2020 at 6:31 PM John R. Hogerhuis wrote: >> >> >> On Wed, Jul 22, 2020 at 5:59 AM Stephen Adolph wrote: >>> >>> I used this board to send 57600baud serial data in/out of the BCR port. >> >> Out? That's cool. I thought it was in only. >> >> -- John.
Re: [M100] Slim style DB25/DE9 connectors
yah, I got it working bi-directional but half duplex. which is acceptable for TPDD protocol, but not normal RS-232. On Wed, Jul 22, 2020 at 6:31 PM John R. Hogerhuis wrote: > > > On Wed, Jul 22, 2020 at 5:59 AM Stephen Adolph > wrote: > >> >> I used this board to send 57600baud serial data in/out of the BCR port. >> > > Out? That's cool. I thought it was in only. > > -- John. >
Re: [M100] Slim style DB25/DE9 connectors
On Wed, Jul 22, 2020 at 5:59 AM Stephen Adolph wrote: > > I used this board to send 57600baud serial data in/out of the BCR port. > Out? That's cool. I thought it was in only. -- John.
Re: [M100] Listserv Search
Great clues. Thanks. On Wednesday, July 22, 2020, 02:29:39 PM EDT, Jeffrey Birt wrote: This loss of an entire block is the symptom of a missing chip select. When the LCD driver chips are powered/reset they will drive every pixel on/black. When they receive the proper initialization, they will drive every pixel off/clear. It seems the rest and initialization steps are being done so commands are getting through (and the machine is booting so the LCD has to be initializing and responding). Each driver chip on the LCD controls one block of pixels. If an entire block is missing, it is a good sign the chip select is not getting through. It could be a bad trace on the M100, a bad LCD cable or a bad LCD itself. If you have a scope of logic probe you can check to see if all the chip select lines are toggling. Jeff BIrt From: M100 On Behalf Of Chris Fezzler Sent: Wednesday, July 22, 2020 11:26 AM To: m...@bitchin100.com Subject: Re: [M100] Listserv Search Here you go. On Wednesday, July 22, 2020, 11:52:23 AM EDT, Stephen Adolph wrote: a pic of the garbled screen would be great if you can do it.. thanks On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler wrote: Sorry - typing too fast. Top four lines of the screen. Yes, mostly garbage all of the time. Except a hard rest will generate a proper menu screen. Yes, in BASIC the same. But if I type in a test program and hit RUN the program will indeed run. So the computer is getting the commands/keystrokes. Just not displaying bottom four lines. I think it is a component issue. On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph wrote: Hi Chris, What do you mean by "the top 4". Do you mean top 4 lines on the screen? I think so. So is it correct to say that the LCD bottom 4 lines display garbage at certain times * not after a (hard) reset - you get a correct MENU display (not just a RESET but a HARD RESET?) * when you enter BASIC and/or run any software, the LCD bottom half shows garbage? I would suggest that you run a memory test. I doubt that you have a fundamental problem with the LCD system, nor the keyboard system. good problem! On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: I'm trying to troubleshoot what components on the circuit board process keystrokes and send them to the screen. The screen and keyboard on my Model 100 are in perfect working order. But only the top four are processing correctly. The bottom four are displaying gibberish. But if I type commands in BASIC, they work. So again, not the keyboard or screen but components that process the bottom half. A hard rest will present a perfect menu screen. But upon entering an app, the bottom four lines are not getting proper signal. Sorry, I'm not an electronics or computer engineer. Just a hobbyist with a soldering iron and a willingness to learn. Plan to look at Technical Reference Manual to see if I can troubleshoot. On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis wrote: On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: Is there a way to search old Listserv messages so I can research before embarrass...err...I mean ask a dumb question. Seriously, would like to research. How old are we talking? Gmane was our archive until it went down for a long time. Then it was back up recently but only accessible through nntp readers. Not sure the status of that. Our GNU Mailman list itself has an archive which goes back to 2011 when I took over running the list. http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ Or just ask. We Are The Archive. -- John.
Re: [M100] Listserv Search
This loss of an entire block is the symptom of a missing chip select. When the LCD driver chips are powered/reset they will drive every pixel on/black. When they receive the proper initialization, they will drive every pixel off/clear. It seems the rest and initialization steps are being done so commands are getting through (and the machine is booting so the LCD has to be initializing and responding). Each driver chip on the LCD controls one block of pixels. If an entire block is missing, it is a good sign the chip select is not getting through. It could be a bad trace on the M100, a bad LCD cable or a bad LCD itself. If you have a scope of logic probe you can check to see if all the chip select lines are toggling. Jeff BIrt From: M100 On Behalf Of Chris Fezzler Sent: Wednesday, July 22, 2020 11:26 AM To: m...@bitchin100.com Subject: Re: [M100] Listserv Search Here you go. On Wednesday, July 22, 2020, 11:52:23 AM EDT, Stephen Adolph mailto:twospru...@gmail.com> > wrote: a pic of the garbled screen would be great if you can do it.. thanks On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler mailto:fezz...@yahoo.com> > wrote: Sorry - typing too fast. Top four lines of the screen. Yes, mostly garbage all of the time. Except a hard rest will generate a proper menu screen. Yes, in BASIC the same. But if I type in a test program and hit RUN the program will indeed run. So the computer is getting the commands/keystrokes. Just not displaying bottom four lines. I think it is a component issue. On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph mailto:twospru...@gmail.com> > wrote: Hi Chris, What do you mean by "the top 4". Do you mean top 4 lines on the screen? I think so. So is it correct to say that the LCD bottom 4 lines display garbage at certain times * not after a (hard) reset - you get a correct MENU display (not just a RESET but a HARD RESET?) * when you enter BASIC and/or run any software, the LCD bottom half shows garbage? I would suggest that you run a memory test. I doubt that you have a fundamental problem with the LCD system, nor the keyboard system. good problem! On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler mailto:fezz...@yahoo.com> > wrote: I'm trying to troubleshoot what components on the circuit board process keystrokes and send them to the screen. The screen and keyboard on my Model 100 are in perfect working order. But only the top four are processing correctly. The bottom four are displaying gibberish. But if I type commands in BASIC, they work. So again, not the keyboard or screen but components that process the bottom half. A hard rest will present a perfect menu screen. But upon entering an app, the bottom four lines are not getting proper signal. Sorry, I'm not an electronics or computer engineer. Just a hobbyist with a soldering iron and a willingness to learn. Plan to look at Technical Reference Manual to see if I can troubleshoot. On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis mailto:jho...@pobox.com> > wrote: On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler mailto:fezz...@yahoo.com> > wrote: Is there a way to search old Listserv messages so I can research before embarrass...err...I mean ask a dumb question. Seriously, would like to research. How old are we talking? Gmane was our archive until it went down for a long time. Then it was back up recently but only accessible through nntp readers. Not sure the status of that. Our GNU Mailman list itself has an archive which goes back to 2011 when I took over running the list. http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ Or just ask. We Are The Archive. -- John.
Re: [M100] Listserv Search
Will do. On Wednesday, July 22, 2020, 01:21:58 PM EDT, Josh Malone wrote: So, I think I'm seeing entire controllers out (the empty square sections). But if, as you say, the MENU screen works properly, then I would assume that some communications is just slightly out-of-spec for the chips. My first suspect would be failing capacitors - but there are no electrolytics on the LCD PCB. Perhaps corrosion on the LCD PCB is creating a high-impedance short somewhere? Have you inspected the unit for corrosion or other damage? -Josh On Wed, Jul 22, 2020 at 1:17 PM Stephen Adolph wrote: If you have a second M100, it would be interesting to see if the problem follows the LCD. So, move the entire Top half of the M100 to a second machine and see if the problem goes with the top half. On Wed, Jul 22, 2020 at 1:15 PM Stephen Adolph wrote: ok this is quite interesting. I'm not sure what to make of that. And you are sure there is no problem with the "hard reset MENU' screen. On Wed, Jul 22, 2020 at 12:26 PM Chris Fezzler wrote: Here you go. On Wednesday, July 22, 2020, 11:52:23 AM EDT, Stephen Adolph wrote: a pic of the garbled screen would be great if you can do it.. thanks On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler wrote: Sorry - typing too fast. Top four lines of the screen. Yes, mostly garbage all of the time. Except a hard rest will generate a proper menu screen.Yes, in BASIC the same. But if I type in a test program and hit RUN the program will indeed run.So the computer is getting the commands/keystrokes. Just not displaying bottom four lines. I think it is a component issue. On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph wrote: Hi Chris, What do you mean by "the top 4". Do you mean top 4 lines on the screen? I think so. So is it correct to say that the LCD bottom 4 lines display garbage at certain times* not after a (hard) reset - you get a correct MENU display (not just a RESET but a HARD RESET?)* when you enter BASIC and/or run any software, the LCD bottom half shows garbage? I would suggest that you run a memory test.I doubt that you have a fundamental problem with the LCD system, nor the keyboard system. good problem! On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: I'm trying to troubleshoot what components on the circuit board process keystrokes and send them to the screen. The screen and keyboard on my Model 100 are in perfect working order. But only the top four are processing correctly. The bottom four are displaying gibberish. But if I type commands in BASIC, they work. So again, not the keyboard orscreen but components that process the bottom half. A hard rest will present a perfect menu screen. But upon entering an app, the bottom four lines are not getting proper signal. Sorry, I'm not an electronics or computer engineer. Just a hobbyist with a soldering iron and a willingness to learn.Plan to look at Technical Reference Manual to see if I can troubleshoot. On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis wrote: On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: Is there a way to search old Listserv messages so I can research before embarrass...err...I mean ask a dumb question. Seriously, would like to research. How old are we talking? Gmane was our archive until it went down for a long time. Then it was back up recently but only accessible through nntp readers. Not sure the status of that. Our GNU Mailman list itself has an archive which goes back to 2011 when I took over running the list. http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ Or just ask. We Are The Archive. -- John.
Re: [M100] Listserv Search
Can do. On Wednesday, July 22, 2020, 01:17:48 PM EDT, Stephen Adolph wrote: If you have a second M100, it would be interesting to see if the problem follows the LCD. So, move the entire Top half of the M100 to a second machine and see if the problem goes with the top half. On Wed, Jul 22, 2020 at 1:15 PM Stephen Adolph wrote: ok this is quite interesting. I'm not sure what to make of that. And you are sure there is no problem with the "hard reset MENU' screen. On Wed, Jul 22, 2020 at 12:26 PM Chris Fezzler wrote: Here you go. On Wednesday, July 22, 2020, 11:52:23 AM EDT, Stephen Adolph wrote: a pic of the garbled screen would be great if you can do it.. thanks On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler wrote: Sorry - typing too fast. Top four lines of the screen. Yes, mostly garbage all of the time. Except a hard rest will generate a proper menu screen.Yes, in BASIC the same. But if I type in a test program and hit RUN the program will indeed run.So the computer is getting the commands/keystrokes. Just not displaying bottom four lines. I think it is a component issue. On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph wrote: Hi Chris, What do you mean by "the top 4". Do you mean top 4 lines on the screen? I think so. So is it correct to say that the LCD bottom 4 lines display garbage at certain times* not after a (hard) reset - you get a correct MENU display (not just a RESET but a HARD RESET?)* when you enter BASIC and/or run any software, the LCD bottom half shows garbage? I would suggest that you run a memory test.I doubt that you have a fundamental problem with the LCD system, nor the keyboard system. good problem! On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: I'm trying to troubleshoot what components on the circuit board process keystrokes and send them to the screen. The screen and keyboard on my Model 100 are in perfect working order. But only the top four are processing correctly. The bottom four are displaying gibberish. But if I type commands in BASIC, they work. So again, not the keyboard orscreen but components that process the bottom half. A hard rest will present a perfect menu screen. But upon entering an app, the bottom four lines are not getting proper signal. Sorry, I'm not an electronics or computer engineer. Just a hobbyist with a soldering iron and a willingness to learn.Plan to look at Technical Reference Manual to see if I can troubleshoot. On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis wrote: On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: Is there a way to search old Listserv messages so I can research before embarrass...err...I mean ask a dumb question. Seriously, would like to research. How old are we talking? Gmane was our archive until it went down for a long time. Then it was back up recently but only accessible through nntp readers. Not sure the status of that. Our GNU Mailman list itself has an archive which goes back to 2011 when I took over running the list. http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ Or just ask. We Are The Archive. -- John.
Re: [M100] Listserv Search
So, I think I'm seeing entire controllers out (the empty square sections). But if, as you say, the MENU screen works properly, then I would assume that some communications is just slightly out-of-spec for the chips. My first suspect would be failing capacitors - but there are no electrolytics on the LCD PCB. Perhaps corrosion on the LCD PCB is creating a high-impedance short somewhere? Have you inspected the unit for corrosion or other damage? -Josh On Wed, Jul 22, 2020 at 1:17 PM Stephen Adolph wrote: > If you have a second M100, it would be interesting to see if the problem > follows the LCD. So, move the entire Top half of the M100 to a second > machine and see if the problem goes with the top half. > > > On Wed, Jul 22, 2020 at 1:15 PM Stephen Adolph > wrote: > >> ok this is quite interesting. I'm not sure what to make of that. And >> you are sure there is no problem with the "hard reset MENU' screen. >> >> On Wed, Jul 22, 2020 at 12:26 PM Chris Fezzler wrote: >> >>> Here you go. >>> >>> >>> >>> On Wednesday, July 22, 2020, 11:52:23 AM EDT, Stephen Adolph < >>> twospru...@gmail.com> wrote: >>> >>> >>> a pic of the garbled screen would be great if you can do it.. thanks >>> >>> On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler >>> wrote: >>> >>> Sorry - typing too fast. Top four lines of the screen. >>> >>> Yes, mostly garbage all of the time. Except a hard rest will generate a >>> proper menu screen. >>> Yes, in BASIC the same. But if I type in a test program and hit RUN the >>> program will indeed run. >>> So the computer is getting the commands/keystrokes. Just not displaying >>> bottom four lines. >>> >>> I think it is a component issue. >>> >>> >>> On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph < >>> twospru...@gmail.com> wrote: >>> >>> >>> Hi Chris, >>> >>> What do you mean by "the top 4". Do you mean top 4 lines on the >>> screen? I think so. >>> >>> So is it correct to say that the LCD bottom 4 lines display garbage at >>> certain times >>> * not after a (hard) reset - you get a correct MENU display (not just a >>> RESET but a HARD RESET?) >>> * when you enter BASIC and/or run any software, the LCD bottom half >>> shows garbage? >>> >>> I would suggest that you run a memory test. >>> I doubt that you have a fundamental problem with the LCD system, nor the >>> keyboard system. >>> >>> good problem! >>> >>> >>> >>> On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: >>> >>> I'm trying to troubleshoot what components on the circuit board process >>> keystrokes and send them to the screen. >>> >>> The screen and keyboard on my Model 100 are in perfect working order. >>> But only the top four are processing correctly. >>> >>> The bottom four are displaying gibberish. But if I type commands in >>> BASIC, they work. So again, not the keyboard or >>> screen but components that process the bottom half. A hard rest will >>> present a perfect menu screen. But upon entering >>> an app, the bottom four lines are not getting proper signal. >>> >>> Sorry, I'm not an electronics or computer engineer. Just a hobbyist >>> with a soldering iron and a willingness to learn. >>> Plan to look at Technical Reference Manual to see if I can troubleshoot. >>> >>> On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis < >>> jho...@pobox.com> wrote: >>> >>> >>> >>> >>> On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: >>> >>> Is there a way to search old Listserv messages so I can research before >>> embarrass...err...I mean ask a dumb question. >>> >>> Seriously, would like to research. >>> >>> >>> >>> How old are we talking? >>> >>> Gmane was our archive until it went down for a long time. Then it was >>> back up recently but only accessible through nntp readers. Not sure >>> the status of that. >>> >>> Our GNU Mailman list itself has an archive which goes back to 2011 when >>> I took over running the list. >>> >>> http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ >>> >>> Or just ask. We Are The Archive. >>> >>> -- John. >>> >>>
Re: [M100] Listserv Search
If you have a second M100, it would be interesting to see if the problem follows the LCD. So, move the entire Top half of the M100 to a second machine and see if the problem goes with the top half. On Wed, Jul 22, 2020 at 1:15 PM Stephen Adolph wrote: > ok this is quite interesting. I'm not sure what to make of that. And you > are sure there is no problem with the "hard reset MENU' screen. > > On Wed, Jul 22, 2020 at 12:26 PM Chris Fezzler wrote: > >> Here you go. >> >> >> >> On Wednesday, July 22, 2020, 11:52:23 AM EDT, Stephen Adolph < >> twospru...@gmail.com> wrote: >> >> >> a pic of the garbled screen would be great if you can do it.. thanks >> >> On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler wrote: >> >> Sorry - typing too fast. Top four lines of the screen. >> >> Yes, mostly garbage all of the time. Except a hard rest will generate a >> proper menu screen. >> Yes, in BASIC the same. But if I type in a test program and hit RUN the >> program will indeed run. >> So the computer is getting the commands/keystrokes. Just not displaying >> bottom four lines. >> >> I think it is a component issue. >> >> >> On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph < >> twospru...@gmail.com> wrote: >> >> >> Hi Chris, >> >> What do you mean by "the top 4". Do you mean top 4 lines on the screen? >> I think so. >> >> So is it correct to say that the LCD bottom 4 lines display garbage at >> certain times >> * not after a (hard) reset - you get a correct MENU display (not just a >> RESET but a HARD RESET?) >> * when you enter BASIC and/or run any software, the LCD bottom half shows >> garbage? >> >> I would suggest that you run a memory test. >> I doubt that you have a fundamental problem with the LCD system, nor the >> keyboard system. >> >> good problem! >> >> >> >> On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: >> >> I'm trying to troubleshoot what components on the circuit board process >> keystrokes and send them to the screen. >> >> The screen and keyboard on my Model 100 are in perfect working order. >> But only the top four are processing correctly. >> >> The bottom four are displaying gibberish. But if I type commands in >> BASIC, they work. So again, not the keyboard or >> screen but components that process the bottom half. A hard rest will >> present a perfect menu screen. But upon entering >> an app, the bottom four lines are not getting proper signal. >> >> Sorry, I'm not an electronics or computer engineer. Just a hobbyist with >> a soldering iron and a willingness to learn. >> Plan to look at Technical Reference Manual to see if I can troubleshoot. >> >> On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis < >> jho...@pobox.com> wrote: >> >> >> >> >> On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: >> >> Is there a way to search old Listserv messages so I can research before >> embarrass...err...I mean ask a dumb question. >> >> Seriously, would like to research. >> >> >> >> How old are we talking? >> >> Gmane was our archive until it went down for a long time. Then it was >> back up recently but only accessible through nntp readers. Not sure >> the status of that. >> >> Our GNU Mailman list itself has an archive which goes back to 2011 when I >> took over running the list. >> >> http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ >> >> Or just ask. We Are The Archive. >> >> -- John. >> >>
Re: [M100] Listserv Search
ok this is quite interesting. I'm not sure what to make of that. And you are sure there is no problem with the "hard reset MENU' screen. On Wed, Jul 22, 2020 at 12:26 PM Chris Fezzler wrote: > Here you go. > > > > On Wednesday, July 22, 2020, 11:52:23 AM EDT, Stephen Adolph < > twospru...@gmail.com> wrote: > > > a pic of the garbled screen would be great if you can do it.. thanks > > On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler wrote: > > Sorry - typing too fast. Top four lines of the screen. > > Yes, mostly garbage all of the time. Except a hard rest will generate a > proper menu screen. > Yes, in BASIC the same. But if I type in a test program and hit RUN the > program will indeed run. > So the computer is getting the commands/keystrokes. Just not displaying > bottom four lines. > > I think it is a component issue. > > > On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph < > twospru...@gmail.com> wrote: > > > Hi Chris, > > What do you mean by "the top 4". Do you mean top 4 lines on the screen? > I think so. > > So is it correct to say that the LCD bottom 4 lines display garbage at > certain times > * not after a (hard) reset - you get a correct MENU display (not just a > RESET but a HARD RESET?) > * when you enter BASIC and/or run any software, the LCD bottom half shows > garbage? > > I would suggest that you run a memory test. > I doubt that you have a fundamental problem with the LCD system, nor the > keyboard system. > > good problem! > > > > On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: > > I'm trying to troubleshoot what components on the circuit board process > keystrokes and send them to the screen. > > The screen and keyboard on my Model 100 are in perfect working order. But > only the top four are processing correctly. > > The bottom four are displaying gibberish. But if I type commands in > BASIC, they work. So again, not the keyboard or > screen but components that process the bottom half. A hard rest will > present a perfect menu screen. But upon entering > an app, the bottom four lines are not getting proper signal. > > Sorry, I'm not an electronics or computer engineer. Just a hobbyist with > a soldering iron and a willingness to learn. > Plan to look at Technical Reference Manual to see if I can troubleshoot. > > On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis < > jho...@pobox.com> wrote: > > > > > On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: > > Is there a way to search old Listserv messages so I can research before > embarrass...err...I mean ask a dumb question. > > Seriously, would like to research. > > > > How old are we talking? > > Gmane was our archive until it went down for a long time. Then it was back > up recently but only accessible through nntp readers. Not sure the status > of that. > > Our GNU Mailman list itself has an archive which goes back to 2011 when I > took over running the list. > > http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ > > Or just ask. We Are The Archive. > > -- John. > >
Re: [M100] Listserv Search
Here you go. On Wednesday, July 22, 2020, 11:52:23 AM EDT, Stephen Adolph wrote: a pic of the garbled screen would be great if you can do it.. thanks On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler wrote: Sorry - typing too fast. Top four lines of the screen. Yes, mostly garbage all of the time. Except a hard rest will generate a proper menu screen.Yes, in BASIC the same. But if I type in a test program and hit RUN the program will indeed run.So the computer is getting the commands/keystrokes. Just not displaying bottom four lines. I think it is a component issue. On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph wrote: Hi Chris, What do you mean by "the top 4". Do you mean top 4 lines on the screen? I think so. So is it correct to say that the LCD bottom 4 lines display garbage at certain times* not after a (hard) reset - you get a correct MENU display (not just a RESET but a HARD RESET?)* when you enter BASIC and/or run any software, the LCD bottom half shows garbage? I would suggest that you run a memory test.I doubt that you have a fundamental problem with the LCD system, nor the keyboard system. good problem! On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: I'm trying to troubleshoot what components on the circuit board process keystrokes and send them to the screen. The screen and keyboard on my Model 100 are in perfect working order. But only the top four are processing correctly. The bottom four are displaying gibberish. But if I type commands in BASIC, they work. So again, not the keyboard orscreen but components that process the bottom half. A hard rest will present a perfect menu screen. But upon entering an app, the bottom four lines are not getting proper signal. Sorry, I'm not an electronics or computer engineer. Just a hobbyist with a soldering iron and a willingness to learn.Plan to look at Technical Reference Manual to see if I can troubleshoot. On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis wrote: On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: Is there a way to search old Listserv messages so I can research before embarrass...err...I mean ask a dumb question. Seriously, would like to research. How old are we talking? Gmane was our archive until it went down for a long time. Then it was back up recently but only accessible through nntp readers. Not sure the status of that. Our GNU Mailman list itself has an archive which goes back to 2011 when I took over running the list. http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ Or just ask. We Are The Archive. -- John.
Re: [M100] Listserv Search
a pic of the garbled screen would be great if you can do it.. thanks On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler wrote: > Sorry - typing too fast. Top four lines of the screen. > > Yes, mostly garbage all of the time. Except a hard rest will generate a > proper menu screen. > Yes, in BASIC the same. But if I type in a test program and hit RUN the > program will indeed run. > So the computer is getting the commands/keystrokes. Just not displaying > bottom four lines. > > I think it is a component issue. > > > On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph < > twospru...@gmail.com> wrote: > > > Hi Chris, > > What do you mean by "the top 4". Do you mean top 4 lines on the screen? > I think so. > > So is it correct to say that the LCD bottom 4 lines display garbage at > certain times > * not after a (hard) reset - you get a correct MENU display (not just a > RESET but a HARD RESET?) > * when you enter BASIC and/or run any software, the LCD bottom half shows > garbage? > > I would suggest that you run a memory test. > I doubt that you have a fundamental problem with the LCD system, nor the > keyboard system. > > good problem! > > > > On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: > > I'm trying to troubleshoot what components on the circuit board process > keystrokes and send them to the screen. > > The screen and keyboard on my Model 100 are in perfect working order. But > only the top four are processing correctly. > > The bottom four are displaying gibberish. But if I type commands in > BASIC, they work. So again, not the keyboard or > screen but components that process the bottom half. A hard rest will > present a perfect menu screen. But upon entering > an app, the bottom four lines are not getting proper signal. > > Sorry, I'm not an electronics or computer engineer. Just a hobbyist with > a soldering iron and a willingness to learn. > Plan to look at Technical Reference Manual to see if I can troubleshoot. > > On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis < > jho...@pobox.com> wrote: > > > > > On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: > > Is there a way to search old Listserv messages so I can research before > embarrass...err...I mean ask a dumb question. > > Seriously, would like to research. > > > > How old are we talking? > > Gmane was our archive until it went down for a long time. Then it was back > up recently but only accessible through nntp readers. Not sure the status > of that. > > Our GNU Mailman list itself has an archive which goes back to 2011 when I > took over running the list. > > http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ > > Or just ask. We Are The Archive. > > -- John. > >
Re: [M100] Listserv Search
Sorry - typing too fast. Top four lines of the screen. Yes, mostly garbage all of the time. Except a hard rest will generate a proper menu screen.Yes, in BASIC the same. But if I type in a test program and hit RUN the program will indeed run.So the computer is getting the commands/keystrokes. Just not displaying bottom four lines. I think it is a component issue. On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph wrote: Hi Chris, What do you mean by "the top 4". Do you mean top 4 lines on the screen? I think so. So is it correct to say that the LCD bottom 4 lines display garbage at certain times* not after a (hard) reset - you get a correct MENU display (not just a RESET but a HARD RESET?)* when you enter BASIC and/or run any software, the LCD bottom half shows garbage? I would suggest that you run a memory test.I doubt that you have a fundamental problem with the LCD system, nor the keyboard system. good problem! On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: I'm trying to troubleshoot what components on the circuit board process keystrokes and send them to the screen. The screen and keyboard on my Model 100 are in perfect working order. But only the top four are processing correctly. The bottom four are displaying gibberish. But if I type commands in BASIC, they work. So again, not the keyboard orscreen but components that process the bottom half. A hard rest will present a perfect menu screen. But upon entering an app, the bottom four lines are not getting proper signal. Sorry, I'm not an electronics or computer engineer. Just a hobbyist with a soldering iron and a willingness to learn.Plan to look at Technical Reference Manual to see if I can troubleshoot. On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis wrote: On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: Is there a way to search old Listserv messages so I can research before embarrass...err...I mean ask a dumb question. Seriously, would like to research. How old are we talking? Gmane was our archive until it went down for a long time. Then it was back up recently but only accessible through nntp readers. Not sure the status of that. Our GNU Mailman list itself has an archive which goes back to 2011 when I took over running the list. http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ Or just ask. We Are The Archive. -- John.
Re: [M100] Listserv Search
The screen has multiple chips that control chunks of the screen. Each chip has its own chip select line labeled CS## on schematic. Seems like those chip select signals are not all getting through. Sent from my Windows 10 phone From: Chris Fezzler Sent: Wednesday, July 22, 2020 8:02 AM To: m...@bitchin100.com Subject: Re: [M100] Listserv Search I'm trying to troubleshoot what components on the circuit board process keystrokes and send them to the screen. The screen and keyboard on my Model 100 are in perfect working order. But only the top four are processing correctly. The bottom four are displaying gibberish. But if I type commands in BASIC, they work. So again, not the keyboard or screen but components that process the bottom half. A hard rest will present a perfect menu screen. But upon entering an app, the bottom four lines are not getting proper signal. Sorry, I'm not an electronics or computer engineer. Just a hobbyist with a soldering iron and a willingness to learn. Plan to look at Technical Reference Manual to see if I can troubleshoot. On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis wrote: On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: Is there a way to search old Listserv messages so I can research before embarrass...err...I mean ask a dumb question. Seriously, would like to research. How old are we talking? Gmane was our archive until it went down for a long time. Then it was back up recently but only accessible through nntp readers. Not sure the status of that. Our GNU Mailman list itself has an archive which goes back to 2011 when I took over running the list. http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ Or just ask. We Are The Archive. -- John.
Re: [M100] Listserv Search
Hi Chris, What do you mean by "the top 4". Do you mean top 4 lines on the screen? I think so. So is it correct to say that the LCD bottom 4 lines display garbage at certain times * not after a (hard) reset - you get a correct MENU display (not just a RESET but a HARD RESET?) * when you enter BASIC and/or run any software, the LCD bottom half shows garbage? I would suggest that you run a memory test. I doubt that you have a fundamental problem with the LCD system, nor the keyboard system. good problem! On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler wrote: > I'm trying to troubleshoot what components on the circuit board process > keystrokes and send them to the screen. > > The screen and keyboard on my Model 100 are in perfect working order. But > only the top four are processing correctly. > > The bottom four are displaying gibberish. But if I type commands in > BASIC, they work. So again, not the keyboard or > screen but components that process the bottom half. A hard rest will > present a perfect menu screen. But upon entering > an app, the bottom four lines are not getting proper signal. > > Sorry, I'm not an electronics or computer engineer. Just a hobbyist with > a soldering iron and a willingness to learn. > Plan to look at Technical Reference Manual to see if I can troubleshoot. > > On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis < > jho...@pobox.com> wrote: > > > > > On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: > > Is there a way to search old Listserv messages so I can research before > embarrass...err...I mean ask a dumb question. > > Seriously, would like to research. > > > > How old are we talking? > > Gmane was our archive until it went down for a long time. Then it was back > up recently but only accessible through nntp readers. Not sure the status > of that. > > Our GNU Mailman list itself has an archive which goes back to 2011 when I > took over running the list. > > http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ > > Or just ask. We Are The Archive. > > -- John. >
Re: [M100] Listserv Search
I'm trying to troubleshoot what components on the circuit board process keystrokes and send them to the screen. The screen and keyboard on my Model 100 are in perfect working order. But only the top four are processing correctly. The bottom four are displaying gibberish. But if I type commands in BASIC, they work. So again, not the keyboard orscreen but components that process the bottom half. A hard rest will present a perfect menu screen. But upon entering an app, the bottom four lines are not getting proper signal. Sorry, I'm not an electronics or computer engineer. Just a hobbyist with a soldering iron and a willingness to learn.Plan to look at Technical Reference Manual to see if I can troubleshoot. On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis wrote: On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler wrote: Is there a way to search old Listserv messages so I can research before embarrass...err...I mean ask a dumb question. Seriously, would like to research. How old are we talking? Gmane was our archive until it went down for a long time. Then it was back up recently but only accessible through nntp readers. Not sure the status of that. Our GNU Mailman list itself has an archive which goes back to 2011 when I took over running the list. http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/ Or just ask. We Are The Archive. -- John.
Re: [M100] Slim style DB25/DE9 connectors
as a suggestion if you included a breakout for pin 2, you could also use this for Tx out on BCR, in line with the "BCR hack" I posted at the wiki. as an FYI, I have a MAX232 based adapter board that converts TTL to RS-232, for use with the BCR port. I could share that if there is interest. I used this board to send 57600baud serial data in/out of the BCR port. On Wed, Jul 22, 2020 at 6:10 AM Brian K. White wrote: > On 7/13/20 5:41 PM, Kurt McCullum wrote: > > Looks great. Might be worth adding one more hole that goes to the BCR > > data in pin for those interested in using it for input. > > I ended up making a separate breakout board for hacking/experimenting > > Breakout: https://oshpark.com/shared_projects/MTOWfRkz > > And I've been massaging the usb and wimodem adapters, and the way > oshpark works, you have to keep creating new links for each revision, so > the current versions of those are: > > USB: https://oshpark.com/shared_projects/mTFeysVg > > Vertical USB: https://oshpark.com/shared_projects/OHdw5nqN > > WiModem232: https://oshpark.com/shared_projects/AXNfGK0n > > I just received an earlier version of the WiModem and usb adapters today > and tested them and they both work. > > The BCR port successfully powers the WiModem, but unfortunately the low > battery light flickers rapidly after a few minutes with fresh nimh > batterlies, after about an hour with fresh alkalines. Machine still runs > for at least a couple hours after that. I don't know how long before it > actually dies, just that the battery light flickers rapidly and > constantly, and I've had it on for 2 or 3 hours so far. > > I'm measuring about 4.85v out while loaded with the WiModem, and drawing > about 80ma. 75ma when I issue the AT command to turn the led off. > > I think it was silly to get the OLED version of this thing. You can get > all the information you need to operate the modem right in the terminal. > I think those modules draw about 10-15ma. So between losing the OLED > module and turning off the led, that could bring it down to as low as 60ma. > > https://photos.app.goo.gl/hjoC3vnfZxWbFPRW6 > > -- > bkw >
Re: [M100] Slim style DB25/DE9 connectors
Thanks for making the BCR breakout board Brian! Definitely will come in handy. Kurt On Wed, Jul 22, 2020, at 3:09 AM, Brian K. White wrote: > On 7/13/20 5:41 PM, Kurt McCullum wrote: > > Looks great. Might be worth adding one more hole that goes to the BCR > > data in pin for those interested in using it for input. > > I ended up making a separate breakout board for hacking/experimenting > > Breakout: https://oshpark.com/shared_projects/MTOWfRkz > > And I've been massaging the usb and wimodem adapters, and the way > oshpark works, you have to keep creating new links for each revision, so > the current versions of those are: > > USB: https://oshpark.com/shared_projects/mTFeysVg > > Vertical USB: https://oshpark.com/shared_projects/OHdw5nqN > > WiModem232: https://oshpark.com/shared_projects/AXNfGK0n > > I just received an earlier version of the WiModem and usb adapters today > and tested them and they both work. > > The BCR port successfully powers the WiModem, but unfortunately the low > battery light flickers rapidly after a few minutes with fresh nimh > batterlies, after about an hour with fresh alkalines. Machine still runs > for at least a couple hours after that. I don't know how long before it > actually dies, just that the battery light flickers rapidly and > constantly, and I've had it on for 2 or 3 hours so far. > > I'm measuring about 4.85v out while loaded with the WiModem, and drawing > about 80ma. 75ma when I issue the AT command to turn the led off. > > I think it was silly to get the OLED version of this thing. You can get > all the information you need to operate the modem right in the terminal. > I think those modules draw about 10-15ma. So between losing the OLED > module and turning off the led, that could bring it down to as low as 60ma. > > https://photos.app.goo.gl/hjoC3vnfZxWbFPRW6 > > -- > bkw >
Re: [M100] Slim style DB25/DE9 connectors
On 7/13/20 5:41 PM, Kurt McCullum wrote: Looks great. Might be worth adding one more hole that goes to the BCR data in pin for those interested in using it for input. I ended up making a separate breakout board for hacking/experimenting Breakout: https://oshpark.com/shared_projects/MTOWfRkz And I've been massaging the usb and wimodem adapters, and the way oshpark works, you have to keep creating new links for each revision, so the current versions of those are: USB: https://oshpark.com/shared_projects/mTFeysVg Vertical USB: https://oshpark.com/shared_projects/OHdw5nqN WiModem232: https://oshpark.com/shared_projects/AXNfGK0n I just received an earlier version of the WiModem and usb adapters today and tested them and they both work. The BCR port successfully powers the WiModem, but unfortunately the low battery light flickers rapidly after a few minutes with fresh nimh batterlies, after about an hour with fresh alkalines. Machine still runs for at least a couple hours after that. I don't know how long before it actually dies, just that the battery light flickers rapidly and constantly, and I've had it on for 2 or 3 hours so far. I'm measuring about 4.85v out while loaded with the WiModem, and drawing about 80ma. 75ma when I issue the AT command to turn the led off. I think it was silly to get the OLED version of this thing. You can get all the information you need to operate the modem right in the terminal. I think those modules draw about 10-15ma. So between losing the OLED module and turning off the led, that could bring it down to as low as 60ma. https://photos.app.goo.gl/hjoC3vnfZxWbFPRW6 -- bkw
