From tw at timothyweber.org Sat Jan 6 16:54:47 2007 From: tw at timothyweber.org (Timothy J. Weber) Date: Sat, 06 Jan 2007 17:54:47 -0500 Subject: [sebhc] ET-3400 with 8K EEPROM Message-ID: <45A028B7.9060908@timothyweber.org> Finally got a chance to do it. I don't know if anyone here is into the ET-3400, but I'd be glad to provide additional details. It was quite simple. Long-winded story: A few photos: Haven't yet decided if I'll write a little app to copy blocks from RAM to EEPROM and vice versa, or if I'll just work directly in the EEPROM address space. The former would be a little cooler, in that I'd be using the original hardware to actually run code. Cheers. -- Timothy J. Weber http://timothyweber.org -- Delivered by the SEBHC Mailing List From peter at peternelson.com Sat Jan 6 22:17:08 2007 From: peter at peternelson.com (peter b. nelson) Date: Sat, 06 Jan 2007 23:17:08 -0500 Subject: [sebhc] ET-3400 with 8K EEPROM In-Reply-To: <45A028B7.9060908@timothyweber.org> References: <45A028B7.9060908@timothyweber.org> Message-ID: <45A07444.8030403@peternelson.com> dude! I've been lurking here for months waiting for at ET-3400 post. bought one myself (along with the 6809 upgrade) last summer, but haven't really played with it, much, yet. thanks a ton for your very fun project web-pages. it makes me want to jump in and do a little playing myself. yours truly, peter nelson Timothy J. Weber wrote: > Finally got a chance to do it. I don't know if anyone here is into > the ET-3400, but I'd be glad to provide additional details. It was > quite simple. > > Long-winded story: > > A few photos: > > Haven't yet decided if I'll write a little app to copy blocks from RAM > to EEPROM and vice versa, or if I'll just work directly in the EEPROM > address space. The former would be a little cooler, in that I'd be > using the original hardware to actually run code. > > Cheers. -- Delivered by the SEBHC Mailing List From paulpenn at knology.net Sat Jan 6 21:48:22 2007 From: paulpenn at knology.net (Paul A. Pennington) Date: Sat, 6 Jan 2007 22:48:22 -0500 Subject: [sebhc] ET-3400 with 8K EEPROM References: <45A028B7.9060908@timothyweber.org> Message-ID: <001d01c7320e$ada32670$6401a8c0@A31PAUL> Very Cool! By all means, more details please. Paul Pennington Augusta, Georgia ----- Original Message ----- From: "Timothy J. Weber" To: Sent: Saturday, January 06, 2007 5:54 PM Subject: [sebhc] ET-3400 with 8K EEPROM > Finally got a chance to do it. I don't know if anyone here is into the > ET-3400, but I'd be glad to provide additional details. It was quite > simple. > > Long-winded story: > > A few photos: > > Haven't yet decided if I'll write a little app to copy blocks from RAM > to EEPROM and vice versa, or if I'll just work directly in the EEPROM > address space. The former would be a little cooler, in that I'd be > using the original hardware to actually run code. > > Cheers. > -- > Timothy J. Weber > http://timothyweber.org -- Delivered by the SEBHC Mailing List From allard at xs4all.nl Sun Jan 7 06:34:20 2007 From: allard at xs4all.nl (Allard) Date: Sun, 7 Jan 2007 13:34:20 +0100 (CET) Subject: [sebhc] ET-3400 with 8K EEPROM In-Reply-To: <001d01c7320e$ada32670$6401a8c0@A31PAUL> References: <45A028B7.9060908@timothyweber.org> <001d01c7320e$ada32670$6401a8c0@A31PAUL> Message-ID: <8682.82.92.52.169.1168173260.squirrel@webmail.xs4all.nl> Hi, I'm new here. Nice project! I even don't have the manuals for the 3400. I'm looking for a PDF or something.... Sincerely, Allard http://www.computermuseumgroningen.nl > ----- Original Message ----- > From: "Timothy J. Weber" > To: > Sent: Saturday, January 06, 2007 5:54 PM > Subject: [sebhc] ET-3400 with 8K EEPROM > > >> Finally got a chance to do it. I don't know if anyone here is into the >> ET-3400, but I'd be glad to provide additional details. It was quite >> simple. >> >> Long-winded story: >> >> A few photos: >> >> Haven't yet decided if I'll write a little app to copy blocks from RAM >> to EEPROM and vice versa, or if I'll just work directly in the EEPROM >> address space. The former would be a little cooler, in that I'd be >> using the original hardware to actually run code. >> >> Cheers. >> -- >> Timothy J. Weber >> http://timothyweber.org > > -- > Delivered by the SEBHC Mailing List > -- Delivered by the SEBHC Mailing List From dave06a at dunfield.com Sun Jan 7 08:04:44 2007 From: dave06a at dunfield.com (Dave Dunfield) Date: Sun, 7 Jan 2007 09:04:44 -0500 Subject: [sebhc] ET-3400 with 8K EEPROM In-Reply-To: <8682.82.92.52.169.1168173260.squirrel@webmail.xs4all.nl> References: <001d01c7320e$ada32670$6401a8c0@A31PAUL> Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Message-ID: <200701071403.l07E3Mh9009074@hosting.monisys.ca> > I'm new here. > > Nice project! I even don't have the manuals for the 3400. > I'm looking for a PDF or something.... I have most of the ET-3400 manuals on my site in PDF format (look under the ET-3400 listing). I would be surprised if they were not in the SEBHC archive as well. Dave -- dave06a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.classiccmp.org/dunfield/index.html -- Delivered by the SEBHC Mailing List From tw at timothyweber.org Sun Jan 7 09:41:26 2007 From: tw at timothyweber.org (Timothy J. Weber) Date: Sun, 07 Jan 2007 10:41:26 -0500 Subject: [sebhc] ET-3400 with 8K EEPROM In-Reply-To: <001d01c7320e$ada32670$6401a8c0@A31PAUL> References: <45A028B7.9060908@timothyweber.org> <001d01c7320e$ada32670$6401a8c0@A31PAUL> Message-ID: <45A114A6.4050309@timothyweber.org> Paul A. Pennington wrote: > Very Cool! Thanks!! > By all means, more details please. OK, I've added more detailed notes at . Do let me know if anything's missing - of course I'm jazzed to talk about it! peter b. nelson wrote: > dude! I've been lurking here for months waiting for at ET-3400 post. bought one myself (along with the 6809 upgrade) last summer, but haven't really played with it, much, yet. thanks a ton for your very fun project web-pages. it makes me want to jump in and do a little playing myself. Woohoo! Then it was worth it! Thanks! -- Timothy J. Weber http://timothyweber.org -- Delivered by the SEBHC Mailing List From tw at timothyweber.org Sun Jan 7 09:53:24 2007 From: tw at timothyweber.org (Timothy J. Weber) Date: Sun, 07 Jan 2007 10:53:24 -0500 Subject: [sebhc] ET-3400 with 8K EEPROM In-Reply-To: <200701071403.l07E3Mh9009074@hosting.monisys.ca> References: <001d01c7320e$ada32670$6401a8c0@A31PAUL> <200701071403.l07E3Mh9009074@hosting.monisys.ca> Message-ID: <45A11774.1050404@timothyweber.org> Dave Dunfield wrote: >> I'm new here. >> >> Nice project! I even don't have the manuals for the 3400. >> I'm looking for a PDF or something.... > > I have most of the ET-3400 manuals on my site in PDF format > (look under the ET-3400 listing). I would be surprised if they > were not in the SEBHC archive as well. Yup, that's where I got them. The existing PDF is, in general, a very nice copy. The one difficulty I had with it was the big multi-page schematic; it was a nice scanning job, with overlapping edges so you can print it and tape the pages together, but I, uh... hate paper... so I stitched them together in Photoshop. The result is a bit low-res for silly reasons, but it's easier to look at online. Can I submit that to the archives? I lost my original welcome message, so I don't have the URL anymore. -- Timothy J. Weber http://timothyweber.org -- Delivered by the SEBHC Mailing List From garlanger at gmail.com Sun Jan 7 22:51:53 2007 From: garlanger at gmail.com (Mark Garlanger) Date: Sun, 7 Jan 2007 22:51:53 -0600 Subject: [sebhc] Extra REMarks In-Reply-To: <001f01c706a2$846c57f0$6601a8c0@barry> References: <704e82240611121323l5fc5e6f6jb0aee28c24658af6@mail.gmail.com> <001f01c706a2$846c57f0$6601a8c0@barry> Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Message-ID: <704e82240701072051x31e6146ek5447ac6f3be2befc@mail.gmail.com> The guy that had a bunch of the christmas catalogs scanned in also has an almost complete collection of remarks (only missing 4): http://www.pestingers.net/REMark_magazines/REMark_cvrs.htm Each cover and TOC are scanned and available. Looks like it ended in June of 1992. Here is his top page of old computers: http://www.pestingers.net/antique_computers.htm Lots of stuff. Mark On 11/12/06, Barry Watzman wrote: > What was the date of the last issue of Remark? > > > -----Original Message----- > From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of > Mark Garlanger > Sent: Sunday, November 12, 2006 16:24 PM > To: sebhc > Subject: [sebhc] Extra REMarks > > I have 7 duplicate issues of REMark that I would be willing to trade > for issues I don't have or maybe something else. > > Extra Issues (all from 1983): > #36 - Jan > #42-#47 - July - Dec > > Issues I'm missing: > Issues #1 - #8 > Jan 1984 - Mar 85 > July & Aug 85 > Nov 85 > Jan 86 - ??? > > Mark > -- > Delivered by the SEBHC Mailing List > > > -- > Delivered by the SEBHC Mailing List > -- Delivered by the SEBHC Mailing List From bshannon at tiac.net Mon Jan 8 17:25:20 2007 From: bshannon at tiac.net (Bob Shannon) Date: Mon, 8 Jan 2007 18:25:20 -0500 Subject: [sebhc] HDOS sysgen questions (and problems) References: <200610120348.XAA20486@ss10.danlan.com> <704e82240611032342m7dc105a4g47b5b1fda20f9713@mail.gmail.com> <704e82240611041107y4f5ac9f6k23d8d88210cc5299@mail.gmail.com> <003501c70ec9$1cd27b40$800101df@franky> <704e82240611291535r379caa9dq9a38069d70466502@mail.gmail.com> Message-ID: <002301c7337c$44c2d910$0100a8c0@screamer> Happy New Year, Getting back to old computers once again, I tested the disk Mark kindly sent. The machine 'seems' to boot, but I get gibberish on the console. Typing seems to echo gibberish, sure looks like a baud rate issue to me. I don't have much documentation, and what I have is not what I expect from Heath. So how do I figure out what baud rate my H19-part and my H89-part are speaking to one another? What baud rate is the CP/M disk image expecting? Just how easy is it to 'jumper' the H89-part to something other than the H19-part? It would be really cool if you could do that from outside the case. ----- Original Message ----- From: "Mark Garlanger" To: Sent: Wednesday, November 29, 2006 6:35 PM Subject: Re: [sebhc] HDOS sysgen questions (and problems) >I sent out a copy of CP/M on soft-sectored disks to Bob Shannon, maybe > he'll have a chance to make an image of it. I didn't have time to make > a soft-sectored HDOS disk though, and won't be able to do anything > with my heath computers until after the New Year. > > Have you looked at the 'unofficial' HDOS 3.0 images that are in the > archives? If I remember correctly, the notes mentioned that they are > soft-sectored images but I haven't had a chance to played with them to > verify that. -- Delivered by the SEBHC Mailing List From leeahart at earthlink.net Mon Jan 8 21:16:01 2007 From: leeahart at earthlink.net (Lee Hart) Date: Mon, 08 Jan 2007 21:16:01 -0600 Subject: [sebhc] Star Wars "movie" in ASCII characters Message-ID: <45A308F1.70101@earthlink.net> Hi folks, Remember the old ASCII text-based pictures? I just ran across the darnest one I've ever seen -- it's the original Star Wars "movie", all done with ASCII characters as a simple text file! This would be fun to run on an H8 or H89, wouldn't it? :-) You can view it (on a windows machine) by clicking Start, then Run, and then typing: telnet towel.blinkenlights.nl -- Ring the bells that still can ring Forget the perfect offering There is a crack in everything That's how the light gets in -- Leonard Cohen -- Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net -- Delivered by the SEBHC Mailing List From dkelvey at hotmail.com Tue Jan 9 00:01:42 2007 From: dkelvey at hotmail.com (dwight elvey) Date: Mon, 08 Jan 2007 22:01:42 -0800 Subject: [sebhc] HDOS sysgen questions (and problems) In-Reply-To: <002301c7337c$44c2d910$0100a8c0@screamer> Message-ID: Tue, 09 Jan 2007 06:01:42 GMT Hi Bob As I recall, the H89 did an auto detect on the speed. I believe that the H19 part is set to 4800baud but I could be wrong on that, it may have been 9600. It sounds like you may have a RAM issue or socket issue for the serial chip. You should be able to make up a simple wire to connector to monitor the comunications with a PC in the serial mode. I don't recall if there was a jumper select on the H89 side for the buad rate but it seems like I recall on on the H19 side. I've not tried the CP/M so can't comment on that. Dwight >From: "Bob Shannon" >Reply-To: sebhc at sebhc.org >To: >Subject: Re: [sebhc] HDOS sysgen questions (and problems) >Date: Mon, 8 Jan 2007 18:25:20 -0500 > >Happy New Year, > >Getting back to old computers once again, I tested the disk Mark kindly >sent. The machine 'seems' to boot, but I get gibberish on the console. > >Typing seems to echo gibberish, sure looks like a baud rate issue to me. > >I don't have much documentation, and what I have is not what I expect >from Heath. So how do I figure out what baud rate my H19-part and >my H89-part are speaking to one another? > >What baud rate is the CP/M disk image expecting? > >Just how easy is it to 'jumper' the H89-part to something other than the >H19-part? It would be really cool if you could do that from outside the >case. > > >----- Original Message ----- From: "Mark Garlanger" >To: >Sent: Wednesday, November 29, 2006 6:35 PM >Subject: Re: [sebhc] HDOS sysgen questions (and problems) > > >>I sent out a copy of CP/M on soft-sectored disks to Bob Shannon, maybe >>he'll have a chance to make an image of it. I didn't have time to make >>a soft-sectored HDOS disk though, and won't be able to do anything >>with my heath computers until after the New Year. >> >>Have you looked at the 'unofficial' HDOS 3.0 images that are in the >>archives? If I remember correctly, the notes mentioned that they are >>soft-sectored images but I haven't had a chance to played with them to >>verify that. > > >-- >Delivered by the SEBHC Mailing List _________________________________________________________________ Fixing up the home? Live Search can help http://imagine-windowslive.com/search/kits/default.aspx?kit=improve&locale=en-US&source=hmemailtaglinenov06&FORM=WLMTAG -- Delivered by the SEBHC Mailing List From leeahart at earthlink.net Tue Jan 9 08:24:58 2007 From: leeahart at earthlink.net (Lee Hart) Date: Tue, 09 Jan 2007 08:24:58 -0600 Subject: [sebhc] HDOS sysgen questions (and problems) In-Reply-To: References: Message-ID: <45A3A5BA.3030201@earthlink.net> From: Bob Shannon >> Getting back to old computers once again, I tested the disk Mark kindly >> sent. The machine 'seems' to boot, but I get gibberish on the console. >> Typing seems to echo gibberish, sure looks like a baud rate issue to me. I agree. Heath shipped their HDOS disks to auto-detect the console baud rate. You had to repeatedly type the space bar until HDOS figured out the baud rate. Once it did, the baud rate was saved on the disk, so you didn't have to do it again. The Heath CP/M disks came configured for 9600 baud, but you could change them to anything you liked with the CONFIGUR utility. In your case, it sounds like the disk you have has already been set for some baud rate. BUT, your H19 terminal's baud rate is set to some DIFFERENT value! Stock, the H19 and H89 DIP switches were set for 9600 baud. But it was common to set them to 19200 baud as well. So, my guess is that you have a disk set for 9600 and H19 set for 19200 (or vice versa). The easiest way to figure this out is to boot the system to the point where you are getting the gibberish. Then press OFFLINE ESC x L OFFLINE (the offline key should latch down the first time, then pop back up the second time). This sets the H19 baud rate to 9600. Type commands and see if it is now working. If not, try OFFLINE ESC x M OFFLINE. This sets the H19 baud rate to 19200 baud. Once you know what baud rate the disk is set for, you can set the H19 DIP switches (on the TLB) for the appropriate baud rate. -- Ring the bells that still can ring Forget the perfect offering There is a crack in everything That's how the light gets in -- Leonard Cohen -- Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net -- Delivered by the SEBHC Mailing List From davidwallace2000 at comcast.net Tue Jan 9 12:25:20 2007 From: davidwallace2000 at comcast.net (davidwallace2000 at comcast.net) Date: Tue, 09 Jan 2007 18:25:20 +0000 Subject: [sebhc] HDOS sysgen questions (and problems) Message-ID: <010920071825.16660.45A3DE100005570E000041142200761394CFCFCFCD0A0C0E04040E990B07900E0B@comcast.net> A non-text attachment was scrubbed... Name: not available Type: multipart/alternative Size: 5303 bytes Desc: not available URL: From garlanger at gmail.com Tue Jan 9 12:46:08 2007 From: garlanger at gmail.com (Mark Garlanger) Date: Tue, 9 Jan 2007 12:46:08 -0600 Subject: [sebhc] HDOS sysgen questions (and problems) In-Reply-To: <45A3A5BA.3030201@earthlink.net> References: <45A3A5BA.3030201@earthlink.net> Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Message-ID: <704e82240701091046y32e285eaud63fc97c9238111e@mail.gmail.com> It looks like it should be 9600 then. That disk worked on my systems and I haven't changed the baud rate, Lee's instructions for setting it to 9600 should fix it. Mark On 1/9/07, Lee Hart wrote: > From: Bob Shannon > >> Getting back to old computers once again, I tested the disk Mark kindly > >> sent. The machine 'seems' to boot, but I get gibberish on the console. > >> Typing seems to echo gibberish, sure looks like a baud rate issue to me. > > I agree. Heath shipped their HDOS disks to auto-detect the console baud > rate. You had to repeatedly type the space bar until HDOS figured out > the baud rate. Once it did, the baud rate was saved on the disk, so you > didn't have to do it again. > > The Heath CP/M disks came configured for 9600 baud, but you could change > them to anything you liked with the CONFIGUR utility. > > In your case, it sounds like the disk you have has already been set for > some baud rate. BUT, your H19 terminal's baud rate is set to some > DIFFERENT value! > > Stock, the H19 and H89 DIP switches were set for 9600 baud. But it was > common to set them to 19200 baud as well. So, my guess is that you have > a disk set for 9600 and H19 set for 19200 (or vice versa). > > The easiest way to figure this out is to boot the system to the point > where you are getting the gibberish. Then press OFFLINE ESC x L OFFLINE > (the offline key should latch down the first time, then pop back up the > second time). This sets the H19 baud rate to 9600. Type commands and see > if it is now working. > > If not, try OFFLINE ESC x M OFFLINE. This sets the H19 baud rate to > 19200 baud. > > Once you know what baud rate the disk is set for, you can set the H19 > DIP switches (on the TLB) for the appropriate baud rate. > -- > Ring the bells that still can ring > Forget the perfect offering > There is a crack in everything > That's how the light gets in -- Leonard Cohen > -- > Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net > > -- > Delivered by the SEBHC Mailing List > -- Delivered by the SEBHC Mailing List From bshannon at tiac.net Wed Jan 10 19:03:18 2007 From: bshannon at tiac.net (Bob Shannon) Date: Wed, 10 Jan 2007 20:03:18 -0500 Subject: [sebhc] HDOS sysgen questions (and problems) References: Message-ID: <000901c7351c$4d56f790$0100a8c0@screamer> Hello Dwight, Yes, the H89 does an auto-baud detect, the first time it boots from a newly formatted disk. Then it patches itself and auto-starts at that baud rate. I can boot and run HDOS fine, but I don't know what the baud rate settings are currently. When I boot the CP/M disk I was sent, I get the 'wrong baud rate' gibberish issue. Not a UART socket issue, probably not a RAM issue either. The CP/M disk I received came from another H89, which is probably setup differently than mine. ----- Original Message ----- From: "dwight elvey" To: Sent: Tuesday, January 09, 2007 1:01 AM Subject: Re: [sebhc] HDOS sysgen questions (and problems) > > > Hi Bob > As I recall, the H89 did an auto detect on the speed. I believe > that the H19 part is set to 4800baud but I could be wrong on > that, it may have been 9600. > It sounds like you may have a RAM issue or socket issue for the > serial chip. You should be able to make up a simple wire to connector > to monitor the comunications with a PC in the serial mode. > I don't recall if there was a jumper select on the H89 side for > the buad rate but it seems like I recall on on the H19 side. > I've not tried the CP/M so can't comment on that. > Dwight > >>From: "Bob Shannon" >>Reply-To: sebhc at sebhc.org >>To: >>Subject: Re: [sebhc] HDOS sysgen questions (and problems) >>Date: Mon, 8 Jan 2007 18:25:20 -0500 >> >>Happy New Year, >> >>Getting back to old computers once again, I tested the disk Mark kindly >>sent. The machine 'seems' to boot, but I get gibberish on the console. >> >>Typing seems to echo gibberish, sure looks like a baud rate issue to me. >> >>I don't have much documentation, and what I have is not what I expect >>from Heath. So how do I figure out what baud rate my H19-part and >>my H89-part are speaking to one another? >> >>What baud rate is the CP/M disk image expecting? >> >>Just how easy is it to 'jumper' the H89-part to something other than the >>H19-part? It would be really cool if you could do that from outside the >>case. >> >> >>----- Original Message ----- From: "Mark Garlanger" >>To: >>Sent: Wednesday, November 29, 2006 6:35 PM >>Subject: Re: [sebhc] HDOS sysgen questions (and problems) >> >> >>>I sent out a copy of CP/M on soft-sectored disks to Bob Shannon, maybe >>>he'll have a chance to make an image of it. I didn't have time to make >>>a soft-sectored HDOS disk though, and won't be able to do anything >>>with my heath computers until after the New Year. >>> >>>Have you looked at the 'unofficial' HDOS 3.0 images that are in the >>>archives? If I remember correctly, the notes mentioned that they are >>>soft-sectored images but I haven't had a chance to played with them to >>>verify that. >> >> >>-- >>Delivered by the SEBHC Mailing List > > _________________________________________________________________ > Fixing up the home? Live Search can help > http://imagine-windowslive.com/search/kits/default.aspx?kit=improve&locale=en-US&source=hmemailtaglinenov06&FORM=WLMTAG > > -- > Delivered by the SEBHC Mailing List > -- Delivered by the SEBHC Mailing List From Watzman at neo.rr.com Wed Jan 10 19:27:21 2007 From: Watzman at neo.rr.com (Barry Watzman) Date: Wed, 10 Jan 2007 20:27:21 -0500 Subject: [sebhc] HDOS sysgen questions (and problems) In-Reply-To: <000901c7351c$4d56f790$0100a8c0@screamer> Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Message-ID: <002c01c7351f$a4786380$6500a8c0@barry> Well, it's almost certain to be 4,800, 9,600 or 19,200 baud ... only 3 choices, so I'd attack this by trial and error. Barry Watzman -----Original Message----- From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of Bob Shannon Sent: Wednesday, January 10, 2007 20:03 PM To: sebhc at sebhc.org Subject: Re: [sebhc] HDOS sysgen questions (and problems) Hello Dwight, Yes, the H89 does an auto-baud detect, the first time it boots from a newly formatted disk. Then it patches itself and auto-starts at that baud rate. I can boot and run HDOS fine, but I don't know what the baud rate settings are currently. When I boot the CP/M disk I was sent, I get the 'wrong baud rate' gibberish issue. Not a UART socket issue, probably not a RAM issue either. The CP/M disk I received came from another H89, which is probably setup differently than mine. ----- Original Message ----- From: "dwight elvey" To: Sent: Tuesday, January 09, 2007 1:01 AM Subject: Re: [sebhc] HDOS sysgen questions (and problems) > > > Hi Bob > As I recall, the H89 did an auto detect on the speed. I believe > that the H19 part is set to 4800baud but I could be wrong on > that, it may have been 9600. > It sounds like you may have a RAM issue or socket issue for the > serial chip. You should be able to make up a simple wire to connector > to monitor the comunications with a PC in the serial mode. > I don't recall if there was a jumper select on the H89 side for > the buad rate but it seems like I recall on on the H19 side. > I've not tried the CP/M so can't comment on that. > Dwight > >>From: "Bob Shannon" >>Reply-To: sebhc at sebhc.org >>To: >>Subject: Re: [sebhc] HDOS sysgen questions (and problems) >>Date: Mon, 8 Jan 2007 18:25:20 -0500 >> >>Happy New Year, >> >>Getting back to old computers once again, I tested the disk Mark kindly >>sent. The machine 'seems' to boot, but I get gibberish on the console. >> >>Typing seems to echo gibberish, sure looks like a baud rate issue to me. >> >>I don't have much documentation, and what I have is not what I expect >>from Heath. So how do I figure out what baud rate my H19-part and >>my H89-part are speaking to one another? >> >>What baud rate is the CP/M disk image expecting? >> >>Just how easy is it to 'jumper' the H89-part to something other than the >>H19-part? It would be really cool if you could do that from outside the >>case. >> >> >>----- Original Message ----- From: "Mark Garlanger" >>To: >>Sent: Wednesday, November 29, 2006 6:35 PM >>Subject: Re: [sebhc] HDOS sysgen questions (and problems) >> >> >>>I sent out a copy of CP/M on soft-sectored disks to Bob Shannon, maybe >>>he'll have a chance to make an image of it. I didn't have time to make >>>a soft-sectored HDOS disk though, and won't be able to do anything >>>with my heath computers until after the New Year. >>> >>>Have you looked at the 'unofficial' HDOS 3.0 images that are in the >>>archives? If I remember correctly, the notes mentioned that they are >>>soft-sectored images but I haven't had a chance to played with them to >>>verify that. >> >> >>-- >>Delivered by the SEBHC Mailing List > > _________________________________________________________________ > Fixing up the home? Live Search can help > http://imagine-windowslive.com/search/kits/default.aspx?kit=improve&locale=e n-US&source=hmemailtaglinenov06&FORM=WLMTAG > > -- > Delivered by the SEBHC Mailing List > -- Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List From leeahart at earthlink.net Thu Jan 11 14:03:17 2007 From: leeahart at earthlink.net (Lee Hart) Date: Thu, 11 Jan 2007 14:03:17 -0600 Subject: [sebhc] HDOS sysgen questions (and problems) In-Reply-To: <000901c7351c$4d56f790$0100a8c0@screamer> References: <000901c7351c$4d56f790$0100a8c0@screamer> Message-ID: <45A69805.1020807@earthlink.net> Bob Shannon wrote: > I can boot and run HDOS fine, but I don't know what the baud rate > settings are currently. The quickest way to figure out what the baud rate is set to is to switch to latch OFFLINE down, manually select different baud rates for the H19, then return OFFLINE up and see which one works. The Heath documentation gives the commands for the various baud rates. The common ones are: ESC x L is 9600 baud ESC x M is 19200 baud -- Ring the bells that still can ring Forget the perfect offering There is a crack in everything That's how the light gets in -- Leonard Cohen -- Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net -- Delivered by the SEBHC Mailing List From carrollwaddell at sc.rr.com Sat Jan 13 14:39:15 2007 From: carrollwaddell at sc.rr.com (Carroll Waddell) Date: Sat, 13 Jan 2007 15:39:15 -0500 Subject: [sebhc] Heath Part Numbers Message-ID: <45A94373.90809@sc.rr.com> I found a list of Heath part numbers on the internet some time ago. I have put them into an EXCEL spreadsheet. It contains the Heath part number, a description, equivalent generic part numbers, and alternate part numbers. If anyone is interested, let me know and I will email you this list. Carroll -- Delivered by the SEBHC Mailing List From carrollwaddell at sc.rr.com Sat Jan 13 16:39:30 2007 From: carrollwaddell at sc.rr.com (Carroll Waddell) Date: Sat, 13 Jan 2007 17:39:30 -0500 Subject: [sebhc] PC Boards Message-ID: <45A95FA2.20309@sc.rr.com> Does anyone in the group have any experience with PCB houses? I'm looking for good value making PC boards from 4 x 4 up to about 6 x 12 Carroll -- Delivered by the SEBHC Mailing List From ueoguy at yahoo.com Sat Jan 13 17:34:16 2007 From: ueoguy at yahoo.com (H.E.Robert) Date: Sat, 13 Jan 2007 18:34:16 -0500 Subject: [sebhc] PC Boards In-Reply-To: <45A95FA2.20309@sc.rr.com> Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- References: <45A95FA2.20309@sc.rr.com> Message-ID: <000001c7376b$57d05d50$6501a8c0@ueocore> Carroll, Try pcbexpress.com, they have free downloadable pcb design, silkscreen, and layout tools. This is the firm that is being used by the guy reproducing the Altair 8800 kit. Just Bob! PS, I'd like a copy of the Heathkit parts xref doc.;) -----Original Message----- From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of Carroll Waddell Sent: Saturday, January 13, 2007 5:40 PM To: sebhc at sebhc.org Subject: [sebhc] PC Boards Does anyone in the group have any experience with PCB houses? I'm looking for good value making PC boards from 4 x 4 up to about 6 x 12 Carroll -- Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List From tw at timothyweber.org Sat Jan 13 19:50:05 2007 From: tw at timothyweber.org (Timothy J. Weber) Date: Sat, 13 Jan 2007 20:50:05 -0500 Subject: [sebhc] PC Boards In-Reply-To: <45A95FA2.20309@sc.rr.com> References: <45A95FA2.20309@sc.rr.com> Message-ID: <45A98C4D.8080201@timothyweber.org> What quantity? 4pcb.com has excellent quality, reasonable prices (I think), fast service, and a very nice web site. But they're not the cheapest for small quantities. Carroll Waddell wrote: > Does anyone in the group have any experience with PCB houses? > I'm looking for good value making PC boards from 4 x 4 up to about 6 x 12 > Carroll > -- > Delivered by the SEBHC Mailing List > -- Timothy J. Weber http://timothyweber.org -- Delivered by the SEBHC Mailing List From patrick at vintagecomputermarketplace.com Sat Jan 13 22:52:39 2007 From: patrick at vintagecomputermarketplace.com (Patrick) Date: Sat, 13 Jan 2007 20:52:39 -0800 Subject: [sebhc] PC Boards In-Reply-To: <000001c7376b$57d05d50$6501a8c0@ueocore> References: <45A95FA2.20309@sc.rr.com> <000001c7376b$57d05d50$6501a8c0@ueocore> Message-ID: <45A9B717.6030809@vintagecomputermarketplace.com> Do you mean EXPRESSPCB.COM? I'm not aware that pcbexpress.com (name reversed) offers free CAD software. I've used ExpressPCB for tons of projects, hobby and otherwise. They're great, but be aware that the parts library is full of little annoying errors, so check everything carefully, especially pin numbers and through-hole diameters, before submitting your order. --Patrick H.E.Robert wrote: > Carroll, > > Try pcbexpress.com, they have free downloadable pcb design, silkscreen, > and layout tools. This is the firm that is being used by the guy > reproducing the Altair 8800 kit. > > Just Bob! > PS, I'd like a copy of the Heathkit parts xref doc.;) > > -----Original Message----- > From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of > Carroll Waddell > Sent: Saturday, January 13, 2007 5:40 PM > To: sebhc at sebhc.org > Subject: [sebhc] PC Boards > > Does anyone in the group have any experience with PCB houses? > I'm looking for good value making PC boards from 4 x 4 up to about 6 x 12 > Carroll > -- > Delivered by the SEBHC Mailing List > > -- > Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List From leeahart at earthlink.net Sun Jan 14 14:09:31 2007 From: leeahart at earthlink.net (Lee Hart) Date: Sun, 14 Jan 2007 14:09:31 -0600 Subject: [sebhc] PC Boards In-Reply-To: <45A98C4D.8080201@timothyweber.org> References: <45A95FA2.20309@sc.rr.com> <45A98C4D.8080201@timothyweber.org> Message-ID: <45AA8DFB.7000400@earthlink.net> Timothy J. Weber wrote: > 4pcb.com has excellent quality, reasonable prices (I think), fast > service, and a very nice web site. But they're not the cheapest for > small quantities. I've used several firms, and Advanced Circuits <4pcb.com> is the best so far. Their prices aren't the cheapest, but the quality is excellent and they deliver on time. -- Ring the bells that still can ring Forget the perfect offering There is a crack in everything That's how the light gets in -- Leonard Cohen -- Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net -- Delivered by the SEBHC Mailing List From peter at peternelson.com Thu Jan 18 09:04:42 2007 From: peter at peternelson.com (peter b. nelson) Date: Thu, 18 Jan 2007 10:04:42 -0500 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay In-Reply-To: <44C12FFC.8090701@sc.rr.com> References: <44C12FFC.8090701@sc.rr.com> Message-ID: <45AF8C8A.4090905@peternelson.com> I can't tell if this thing is "8 bit", so this post may be slightly off topic, but... Tubeheads and historians will appreciate this awesome piece of computing history. It doesn't get any more retro than this. Heathkit Educational Electronic Analog Computer http://cgi.ebay.com/Vintage-Heathkit-EC-1-Analog-Computer-w-Tubes-Manual_W0QQitemZ190072594828 -PBN -- Delivered by the SEBHC Mailing List From davidwallace2000 at comcast.net Thu Jan 18 09:37:51 2007 From: davidwallace2000 at comcast.net (davidwallace2000 at comcast.net) Date: Thu, 18 Jan 2007 15:37:51 +0000 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay Message-ID: <011820071537.25855.45AF944F0004A78A000064FF2200750744CFCFCFCD0A0C0E04040E990B07900E0B@comcast.net> A non-text attachment was scrubbed... Name: not available Type: multipart/alternative Size: 2819 bytes Desc: not available URL: From dkelvey at hotmail.com Thu Jan 18 09:58:14 2007 From: dkelvey at hotmail.com (dwight elvey) Date: Thu, 18 Jan 2007 07:58:14 -0800 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay In-Reply-To: <45AF8C8A.4090905@peternelson.com> Message-ID: Thu, 18 Jan 2007 15:58:14 GMT Hi The EC-1 is a 10 op-amp analog computer. It has no non-linear functions built in but can simulate a lot of real world physical behavour. It is what is called a continuous time computer. This is unlike uPs that can only emulatate this with descreete time computing. There was a time when most all simulation for structures, automobiles, airplanes and you name its were modeled such that they could be analysed using such analog computers. I would estimate that the EC-1 is good to about 2.5 to 3 decimal digits if use right. That would put it in the range of about a 24 bit computer ( 12 to 16 bits at any one calculation ). The reason that I state more digits is simply that the analog computer do automatic scalling, with better control than floating point does on a uP. I have EC-1 and one other analog computer. They are intersting to play with. At the year before last VCF, there was a machine made with parts from an English erector set. It was called an inference engine. It demenstrated damped harmonic action. It was the equivilent of a two op-amp electronic analog computer. Dwight >From: "peter b. nelson" >Reply-To: sebhc at sebhc.org >To: sebhc at sebhc.org >Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay >Date: Thu, 18 Jan 2007 10:04:42 -0500 > >I can't tell if this thing is "8 bit", so this post may be slightly off >topic, but... > >Tubeheads and historians will appreciate this awesome piece of computing >history. It doesn't get any more retro than this. > >Heathkit Educational Electronic Analog Computer > > >http://cgi.ebay.com/Vintage-Heathkit-EC-1-Analog-Computer-w-Tubes-Manual_W0QQitemZ190072594828 > >-PBN >-- >Delivered by the SEBHC Mailing List _________________________________________________________________ The MSN Entertainment Guide to Golden Globes is here. Get all the scoop. http://tv.msn.com/tv/globes2007/?icid=nctagline2 -- Delivered by the SEBHC Mailing List From me at patswayne.com Thu Jan 18 09:57:27 2007 From: me at patswayne.com (Pat Swayne) Date: Thu, 18 Jan 2007 10:57:27 -0500 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay In-Reply-To: <45AF8C8A.4090905@peternelson.com> References: <44C12FFC.8090701@sc.rr.com> <45AF8C8A.4090905@peternelson.com> Message-ID: <7.0.1.0.2.20070118105332.03d3e7e0@patswayne.com> That thing doesn't have any bits, since it's analog. It was introduced in 1960. You can read more about it here: http://www.old-computers.com/museum/computer.asp?c=787 Since Bill Gates and Steve Jobs were both born in 1955, do you suppose their folks got them one of these for their 5th or 6th birthdays to get them started? -- Pat At 10:04 AM 1/18/2007, you wrote: >I can't tell if this thing is "8 bit", so this post may be slightly >off topic, but... > >Tubeheads and historians will appreciate this awesome piece of >computing history. It doesn't get any more retro than this. > >Heathkit Educational Electronic Analog Computer > > >http://cgi.ebay.com/Vintage-Heathkit-EC-1-Analog-Computer-w-Tubes-Manual_W0QQitemZ190072594828 > >-PBN >-- >Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List From Watzman at neo.rr.com Thu Jan 18 10:53:14 2007 From: Watzman at neo.rr.com (Barry Watzman) Date: Thu, 18 Jan 2007 11:53:14 -0500 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay In-Reply-To: <45AF8C8A.4090905@peternelson.com> Message-ID: <003c01c73b21$25285bf0$6500a8c0@barry> It's an analog computer, not a digital computer. So "bits" and "bytes" don't apply ... at all. These show up on E-Bay relatively often (about 5 to 10 times per year), and they usually go for $200 to $800. -----Original Message----- From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of peter b. nelson Sent: Thursday, January 18, 2007 10:05 AM To: sebhc at sebhc.org Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay I can't tell if this thing is "8 bit", so this post may be slightly off topic, but... Tubeheads and historians will appreciate this awesome piece of computing history. It doesn't get any more retro than this. Heathkit Educational Electronic Analog Computer http://cgi.ebay.com/Vintage-Heathkit-EC-1-Analog-Computer-w-Tubes-Manual_W0Q QitemZ190072594828 -PBN -- Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List From RONALD.S.WEST at saic.com Thu Jan 18 11:32:11 2007 From: RONALD.S.WEST at saic.com (West, Ronald S.) Date: Thu, 18 Jan 2007 12:32:11 -0500 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay In-Reply-To: <003c01c73b21$25285bf0$6500a8c0@barry> Message-ID: <58FCC1586AD7884BB367EA05255643BC01D3D7DE@0015-its-exmb05.us.saic.com> I wish it were down in the $200.00 range I would bid on it. Does anyone know what they cost originally from Heath? ROn -----Original Message----- From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of Barry Watzman Sent: Thursday, January 18, 2007 11:53 AM To: sebhc at sebhc.org Subject: RE: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay It's an analog computer, not a digital computer. So "bits" and "bytes" don't apply ... at all. These show up on E-Bay relatively often (about 5 to 10 times per year), and they usually go for $200 to $800. -----Original Message----- From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of peter b. nelson Sent: Thursday, January 18, 2007 10:05 AM To: sebhc at sebhc.org Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay I can't tell if this thing is "8 bit", so this post may be slightly off topic, but... Tubeheads and historians will appreciate this awesome piece of computing history. It doesn't get any more retro than this. Heathkit Educational Electronic Analog Computer http://cgi.ebay.com/Vintage-Heathkit-EC-1-Analog-Computer-w-Tubes-Manual _W0Q QitemZ190072594828 -PBN -- Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List From me at patswayne.com Thu Jan 18 12:11:53 2007 From: me at patswayne.com (Pat Swayne) Date: Thu, 18 Jan 2007 13:11:53 -0500 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay In-Reply-To: <58FCC1586AD7884BB367EA05255643BC01D3D7DE@0015-its-exmb05.u s.saic.com> References: <003c01c73b21$25285bf0$6500a8c0@barry> <58FCC1586AD7884BB367EA05255643BC01D3D7DE@0015-its-exmb05.us.saic.com> Message-ID: <7.0.1.0.2.20070118131116.011f0048@patswayne.com> Ron wrote: >Does anyone know what they cost originally from Heath? $400, according to old-computers.com. -- Pat -- Delivered by the SEBHC Mailing List From billwilkinson at mindspring.com Thu Jan 18 12:22:16 2007 From: billwilkinson at mindspring.com (William Wilkinson) Date: Thu, 18 Jan 2007 12:22:16 -0600 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay Message-ID: <380-22007141818221693@mindspring.com> Pat, We must have been looking at the same page at the same time. --Bill > [Original Message] > From: Pat Swayne > To: > Date: 1/18/2007 12:20:00 PM > Subject: RE: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay > > Ron wrote: > > >Does anyone know what they cost originally from Heath? > > $400, according to old-computers.com. > -- Pat > > > -- > Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List From billwilkinson at mindspring.com Thu Jan 18 12:20:31 2007 From: billwilkinson at mindspring.com (William Wilkinson) Date: Thu, 18 Jan 2007 12:20:31 -0600 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay Message-ID: <380-220071418182031265@mindspring.com> Old-computers.com (http://www.old-computers.com/museum/computer.asp?c=787) says it sold for about $400--which is about $500 less than the number I remembered. Looking at the schematic from Vintage Radio (http://www.vintage-radio.info/heathkit/index.htm), you could probably build an equivalent from a handful of solid-state op amps and a few regulators--though I doubt that it would be quite as impressive as the original. One thing, though. You'd still need all that real estate for the knobs, jacks, and meter. --Bill > [Original Message] > From: West, Ronald S. > To: > Date: 1/18/2007 11:42:49 AM > Subject: RE: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay > > I wish it were down in the $200.00 range I would bid on it. > > Does anyone know what they cost originally from Heath? > > ROn > > -----Original Message----- > From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf > Of Barry Watzman > Sent: Thursday, January 18, 2007 11:53 AM > To: sebhc at sebhc.org > Subject: RE: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay > > It's an analog computer, not a digital computer. So "bits" and "bytes" > don't apply ... at all. > > These show up on E-Bay relatively often (about 5 to 10 times per year), > and they usually go for $200 to $800. > > > -----Original Message----- > From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf > Of peter b. nelson > Sent: Thursday, January 18, 2007 10:05 AM > To: sebhc at sebhc.org > Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay > > I can't tell if this thing is "8 bit", so this post may be slightly off > topic, but... > > Tubeheads and historians will appreciate this awesome piece of computing > history. It doesn't get any more retro than this. > > Heathkit Educational Electronic Analog Computer > > > http://cgi.ebay.com/Vintage-Heathkit-EC-1-Analog-Computer-w-Tubes-Manual > _W0Q > QitemZ190072594828 > > -PBN > -- > Delivered by the SEBHC Mailing List > > > -- > Delivered by the SEBHC Mailing List > > -- > Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List From mcguire at neurotica.com Thu Jan 18 13:11:16 2007 From: mcguire at neurotica.com (Dave McGuire) Date: Thu, 18 Jan 2007 14:11:16 -0500 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay In-Reply-To: <380-220071418182031265@mindspring.com> References: <380-220071418182031265@mindspring.com> Message-ID: On Jan 18, 2007, at 1:20 PM, William Wilkinson wrote: > Looking at the schematic from Vintage Radio > (http://www.vintage-radio.info/heathkit/index.htm), you could probably > build an equivalent from a handful of solid-state op amps and a few > regulators--though I doubt that it would be quite as impressive as the > original. > > One thing, though. You'd still need all that real estate for the > knobs, > jacks, and meter. I've often thought of building a digitally-interfaced analog computer, primarily as an exercise/fun project. Picture a traditionally-designed analog computer, but made with modern op-amps and other components, but with digital pots instead of "real" ones, and D/A and A/D converters for inputs and outputs. Analog Devices has a fantastic chip that I'd like to stick in the middle of it all, the AD538 Real-Time Analog Computational Unit. It's a very complex analog chip that can perform analog multiplication, division, and exponentiation. I have a few of them here and have been itching to put some voltages through them. Oh yes, I don't recall if I've ever actually posted anything here before...I subscribed a month or three ago (things are crazy as I've just moved house); I'm a vintage computing enthusiast...I cut my teeth on the Z80 and PDP-11. I subscribed here because I have an H-8 and was looking for kindred spirits. So, hello all. :-) -Dave -- Dave McGuire Port Charlotte, FL -- Delivered by the SEBHC Mailing List From davidwallace2000 at comcast.net Thu Jan 18 14:33:13 2007 From: davidwallace2000 at comcast.net (davidwallace2000 at comcast.net) Date: Thu, 18 Jan 2007 20:33:13 +0000 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay Message-ID: <011820072033.29846.45AFD9890008FFA9000074962206424413CFCFCFCD0A0C0E04040E990B07900E0B@comcast.net> A non-text attachment was scrubbed... Name: not available Type: multipart/alternative Size: 5191 bytes Desc: not available URL: From mcguire at neurotica.com Thu Jan 18 14:45:46 2007 From: mcguire at neurotica.com (Dave McGuire) Date: Thu, 18 Jan 2007 15:45:46 -0500 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay In-Reply-To: <011820072033.29846.45AFD9890008FFA9000074962206424413CFCFCFCD0A0C0E04040E990B07900E0B@comcast.net> References: <011820072033.29846.45AFD9890008FFA9000074962206424413CFCFCFCD0A0C0E04040E990B07900E0B@comcast.net> Message-ID: <2377DC23-78ED-4054-BF19-8A7545E452B8@neurotica.com> On Jan 18, 2007, at 3:33 PM, davidwallace2000 at comcast.net wrote: > Nowadays all my analog computation is done in the pursuit of making > electronic music. After all, much of the same circuitry that goes > into analog computation is also used in the waveform generators of > analog music synthesizers. Indeed, that's neat stuff. > Apropos of which, I guess I should check out that AD538 and see if > it might be useful in my next synthesizer project... That sounds like a neat idea. I believe it tops out in the 300KHz range. -Dave -- Dave McGuire Port Charlotte, FL -- Delivered by the SEBHC Mailing List From leeahart at earthlink.net Thu Jan 18 14:20:52 2007 From: leeahart at earthlink.net (Lee Hart) Date: Thu, 18 Jan 2007 14:20:52 -0600 Subject: [sebhc] old heathkit computer EC-1 (w/vacuum tubes) on ebay In-Reply-To: <45AF8C8A.4090905@peternelson.com> References: <44C12FFC.8090701@sc.rr.com> <45AF8C8A.4090905@peternelson.com> Message-ID: <45AFD6A4.20001@earthlink.net> peter b. nelson wrote: > I can't tell if this thing is "8 bit", so this post may be slightly off > topic, but... > http://cgi.ebay.com/Vintage-Heathkit-EC-1-Analog-Computer-w-Tubes-Manual_W0QQitemZ190072594828 It's an analog computer; NO bits! Or infinite bits, if you prefer :-) I used one in college. They are really neat machines. Basically, a bunch of analog opamps, with the inputs and outputs readily accessible on the front panel. Almost any imaginable differential equation can be solved on them, but it would be useless for adding 2+2. -- Ring the bells that still can ring Forget the perfect offering There is a crack in everything That's how the light gets in -- Leonard Cohen -- Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net -- Delivered by the SEBHC Mailing List From carrollwaddell at sc.rr.com Fri Jan 19 21:15:23 2007 From: carrollwaddell at sc.rr.com (Carroll Waddell) Date: Fri, 19 Jan 2007 22:15:23 -0500 Subject: [sebhc] AT&T Message-ID: <45B1894B.9070304@sc.rr.com> I know this is off the subject of Heath H8(9), but does anyone know anything about the AT&T 8340 alarm control keypad? Description? Operation? Schematic? I've found tons of them on the internet and Ebay. I bought 10, but I don't know what to do with them (Short of designing a custom PC board) Carroll -- Delivered by the SEBHC Mailing List From ueoguy at yahoo.com Fri Jan 19 21:40:15 2007 From: ueoguy at yahoo.com (H.E.Robert) Date: Fri, 19 Jan 2007 22:40:15 -0500 Subject: [sebhc] AT&T In-Reply-To: <45B1894B.9070304@sc.rr.com> References: <45B1894B.9070304@sc.rr.com> Message-ID: <003501c73c44$b359fbd0$6501a8c0@ueocore> Carroll, Try... www.ugprotective.com/manuals/UserManuals/BurglarAlarms/AT&T/SecuritySystem%8 300.pdf Just Bob! -----Original Message----- From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of Carroll Waddell Sent: Friday, January 19, 2007 10:15 PM To: sebhc at sebhc.org Subject: [sebhc] AT&T I know this is off the subject of Heath H8(9), but does anyone know anything about the AT&T 8340 alarm control keypad? Description? Operation? Schematic? I've found tons of them on the internet and Ebay. I bought 10, but I don't know what to do with them (Short of designing a custom PC board) Carroll -- Delivered by the SEBHC Mailing List -- Delivered by the SEBHC Mailing List From timgearin at comcast.net Wed Jan 31 23:02:45 2007 From: timgearin at comcast.net (tg) Date: Wed, 31 Jan 2007 23:02:45 -0600 Subject: [sebhc] A Galactic Experience References: <45B1894B.9070304@sc.rr.com> <003501c73c44$b359fbd0$6501a8c0@ueocore> Message-ID: <000701c745be$4e49ca30$c62efea9@toshibauser> Id like to play that 'A Galactic Experience' by Hoyle & Hoyle again. I never figured out how to launch the space ship but i got the pilot from the starlight lounge sobered then there was that picrat the pirate to look out for if you go in the wrong room. I loved that old text aventure. I havn't played it for almost 20 years when i did have an H89. -- Delivered by the SEBHC Mailing List