Looking for a TI Silent 707 1200baud for the VCF Museum
I'm donating a spare PiDP-8 to the museum which has a serial interface that can't go below 1200baud. If we can find one of the smaller TI Silent terminals that goes that fast, we can hook it up to the PiDP so that we can have it run hands on demos and visitors can take the result with them. It would be really cool for people to have a takeaway from the museum when they visit. So if anyone has one of these TI Silent units they can donate to VCF Museum let me know. Thanks, Corey corey cohen uǝɥoɔ ʎǝɹoɔ
I'm donating a spare PiDP-8 to the museum which has a serial interface that can't go below 1200baud. If we can find one of the smaller TI Silent terminals that goes that fast, we can hook it up to the PiDP so that we can have it run hands on demos and visitors can take the result with them. It would be really cool for people to have a takeaway from the museum when they visit.
So if anyone has one of these TI Silent units they can donate to VCF Museum let me know.
Pretty sure we have one or two.
I don't think we have a 707 300/1200. We have a 745 and a 763 which are 300 baud and big. The 707 is about as wide as the PiDP and the later version go up to 1200 baud. corey cohen uǝɥoɔ ʎǝɹoɔ On Oct 11, 2016, at 6:16 PM, Evan Koblentz via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
I'm donating a spare PiDP-8 to the museum which has a serial interface that can't go below 1200baud. If we can find one of the smaller TI Silent terminals that goes that fast, we can hook it up to the PiDP so that we can have it run hands on demos and visitors can take the result with them. It would be really cool for people to have a takeaway from the museum when they visit.
So if anyone has one of these TI Silent units they can donate to VCF Museum let me know.
Pretty sure we have one or two.
I believe the Silent 700 I have is the 707, 300/1200 model. It has both the built in modem and the separate acoustic coupler. On Tuesday, October 11, 2016, Corey Cohen via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
I don't think we have a 707 300/1200. We have a 745 and a 763 which are 300 baud and big. The 707 is about as wide as the PiDP and the later version go up to 1200 baud.
corey cohen uǝɥoɔ ʎǝɹoɔ
On Oct 11, 2016, at 6:16 PM, Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org <javascript:;>> wrote:
I'm donating a spare PiDP-8 to the museum which has a serial interface that can't go below 1200baud. If we can find one of the smaller TI Silent terminals that goes that fast, we can hook it up to the PiDP so that we can have it run hands on demos and visitors can take the result with them. It would be really cool for people to have a takeaway from the museum when they visit.
So if anyone has one of these TI Silent units they can donate to VCF Museum let me know.
Pretty sure we have one or two.
-- Normal Person: Hey, it seems that you know a lot. Geek: To be honest, it's due to all the surfing I do. Normal Person: So you go surfing? Normal Person: But I don't think that has anything to do with knowing a lot... Geek: I think that's wrong on a fundamental level. Normal Person: Huh? Huh? What?
Just so everyone else knows. Joe doesn't have one with an RS232 interface, so we are still looking. Thanks, Corey corey cohen uǝɥoɔ ʎǝɹoɔ
On Oct 11, 2016, at 8:23 PM, Joseph Oprysko <joprysko1@gmail.com> wrote:
I believe the Silent 700 I have is the 707, 300/1200 model. It has both the built in modem and the separate acoustic coupler.
On Tuesday, October 11, 2016, Corey Cohen via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> wrote: I don't think we have a 707 300/1200. We have a 745 and a 763 which are 300 baud and big. The 707 is about as wide as the PiDP and the later version go up to 1200 baud.
corey cohen uǝɥoɔ ʎǝɹoɔ
On Oct 11, 2016, at 6:16 PM, Evan Koblentz via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
I'm donating a spare PiDP-8 to the museum which has a serial interface that can't go below 1200baud. If we can find one of the smaller TI Silent terminals that goes that fast, we can hook it up to the PiDP so that we can have it run hands on demos and visitors can take the result with them. It would be really cool for people to have a takeaway from the museum when they visit.
So if anyone has one of these TI Silent units they can donate to VCF Museum let me know.
Pretty sure we have one or two.
-- Normal Person: Hey, it seems that you know a lot. Geek: To be honest, it's due to all the surfing I do. Normal Person: So you go surfing? Normal Person: But I don't think that has anything to do with knowing a lot... Geek: I think that's wrong on a fundamental level. Normal Person: Huh? Huh? What?
On Wed, Oct 12, 2016 at 10:13 AM, Corey Cohen via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Just so everyone else knows. Joe doesn't have one with an RS232 interface, so we are still looking.
Thanks, Corey
There are many other portable terminals from the 80's one can use, why confine yourself to a TI 990? b
I actually want something which has a printer like the Silent so that the visitor can take whatever they were doing on the PiDP with them. The TI Silent is like a teletype but is a lot quieter and portable. corey cohen uǝɥoɔ ʎǝɹoɔ
On Oct 12, 2016, at 10:48 AM, william degnan via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
On Wed, Oct 12, 2016 at 10:13 AM, Corey Cohen via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Just so everyone else knows. Joe doesn't have one with an RS232 interface, so we are still looking.
Thanks, Corey
There are many other portable terminals from the 80's one can use, why confine yourself to a TI 990?
b
On 11/10/2016 23:12, Corey Cohen wrote:
I'm donating a spare PiDP-8 to the museum which has a serial interface that can't go below 1200baud. If we can find one of the smaller TI Silent terminals that goes that fast, we can hook it up to the PiDP so that we can have it run hands on demos and visitors can take the result with them. It would be really cool for people to have a takeaway from the museum when they visit.
So if anyone has one of these TI Silent units they can donate to VCF Museum let me know.
Corey, I'm in the UK so probably not worth shipping an actual unit but I do have a couple of 703's that can switch between 300 & 1200 baud. I believe the only differrence to a standard 300 baud unit is a ROM upgrade. I can see if I can dump the ROM if that is any help to you? Cheers, Dave
Correction. We need a 703, my bad the 707 has a built in modem. The 703 is the RS232 version. The 1200 baud version has a dual print head so it can keep up with the speed vs the 300 baud version with a single print head. We may use one of our dec writers, but it's rather large so we would have to find a space vs the TI Silent which is small. Thanks, Cheers, Corey corey cohen uǝɥoɔ ʎǝɹoɔ
On Oct 12, 2016, at 3:33 PM, David Williams via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
On 11/10/2016 23:12, Corey Cohen wrote: I'm donating a spare PiDP-8 to the museum which has a serial interface that can't go below 1200baud. If we can find one of the smaller TI Silent terminals that goes that fast, we can hook it up to the PiDP so that we can have it run hands on demos and visitors can take the result with them. It would be really cool for people to have a takeaway from the museum when they visit.
So if anyone has one of these TI Silent units they can donate to VCF Museum let me know.
Corey,
I'm in the UK so probably not worth shipping an actual unit but I do have a couple of 703's that can switch between 300 & 1200 baud. I believe the only differrence to a standard 300 baud unit is a ROM upgrade. I can see if I can dump the ROM if that is any help to you?
Cheers, Dave
Just tried dumping a text file to my 703 at 1200 baud and you're right, after about 500 characters or so, it can't keep up with the input. Is there any way to put a delay after characters / line on Simh? I tested again by dumping the same text file via TeraTerm using a 15ms delay per character and 350ms per line and it seemed to work fine. Tricky bit might be the ROM as it's an 512x8 PROM (82S147) I've managed to image it though if anybody wants a copy. Cheers, Dave On 14/10/2016 00:23, Corey Cohen wrote:
Correction. We need a 703, my bad the 707 has a built in modem. The 703 is the RS232 version. The 1200 baud version has a dual print head so it can keep up with the speed vs the 300 baud version with a single print head.
We may use one of our dec writers, but it's rather large so we would have to find a space vs the TI Silent which is small.
Thanks, Cheers, Corey
*corey cohen*
*uǝɥoɔ ʎǝɹoɔ*
On Oct 12, 2016, at 3:33 PM, David Williams via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org <mailto:vcf-midatlantic@lists.vintagecomputerfederation.org>> wrote:
On 11/10/2016 23:12, Corey Cohen wrote:
I'm donating a spare PiDP-8 to the museum which has a serial interface that can't go below 1200baud. If we can find one of the smaller TI Silent terminals that goes that fast, we can hook it up to the PiDP so that we can have it run hands on demos and visitors can take the result with them. It would be really cool for people to have a takeaway from the museum when they visit.
So if anyone has one of these TI Silent units they can donate to VCF Museum let me know.
Corey,
I'm in the UK so probably not worth shipping an actual unit but I do have a couple of 703's that can switch between 300 & 1200 baud. I believe the only differrence to a standard 300 baud unit is a ROM upgrade. I can see if I can dump the ROM if that is any help to you?
Cheers, Dave
On 10/14/2016 09:46 AM, David Williams via vcf-midatlantic wrote:
Just tried dumping a text file to my 703 at 1200 baud and you're right, after about 500 characters or so, it can't keep up with the input. Is there any way to put a delay after characters / line on Simh? I tested again by dumping the same text file via TeraTerm using a 15ms delay per character and 350ms per line and it seemed to work fine.
Don't the RS232 control leads take care of this? -- Linux Home Automation Neil Cherry ncherry@linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies
On 14/10/2016 15:00, Neil Cherry wrote:
On 10/14/2016 09:46 AM, David Williams via vcf-midatlantic wrote:
Just tried dumping a text file to my 703 at 1200 baud and you're right, after about 500 characters or so, it can't keep up with the input. Is there any way to put a delay after characters / line on Simh? I tested again by dumping the same text file via TeraTerm using a 15ms delay per character and 350ms per line and it seemed to work fine.
Don't the RS232 control leads take care of this?
They should but I don't believe they are present of the RPi board
On Fri, 14 Oct 2016, David Williams via vcf-midatlantic wrote:
On 14/10/2016 15:00, Neil Cherry wrote:
On 10/14/2016 09:46 AM, David Williams via vcf-midatlantic wrote:
Just tried dumping a text file to my 703 at 1200 baud and you're right, after about 500 characters or so, it can't keep up with the input. Is there any way to put a delay after characters / line on Simh? I tested again by dumping the same text file via TeraTerm using a 15ms delay per character and 350ms per line and it seemed to work fine.
Don't the RS232 control leads take care of this?
They should but I don't believe they are present of the RPi board
They sort of exist on GPIO #30 and #31, but their use is not standard, and your typical level shifter only does TX/RX. I just went through this on a recent project with a RPi connected to an (actual) VT100 -- Couldn't go faster than 4800 baud and expect it to work at all, and even there users typing on the terminal could cause spurious escape characters to be generated. I am thinking of redoing mine with a standard USB-to-serial dongle... wouldn't get the Pi kernel console there, but I could still have a getty. Incidentally the RF environment within the VT100 itself is more than the Pi's 3.3v single-ended external I/O can handle. ;) -- Jameel Akari
I still think if you hook up a modem that does auto-answer (and you can turn off the audio as well), and using a phone line simulator, it would work just as well, plus, likely since the modems do some buffering, it's likely to be able to catch up without dropping characters. On Fri, Oct 14, 2016 at 2:30 PM, Jameel Akari via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
On Fri, 14 Oct 2016, David Williams via vcf-midatlantic wrote:
On 14/10/2016 15:00, Neil Cherry wrote:
On 10/14/2016 09:46 AM, David Williams via vcf-midatlantic wrote:
Just tried dumping a text file to my 703 at 1200 baud and you're right, > after about 500 characters or so, it can't keep up with the input. Is there any way to > put a delay after characters / line on Simh? I tested again by dumping the same text file > via TeraTerm using a 15ms delay per character and 350ms per line and it seemed to work fine.
Don't the RS232 control leads take care of this?
They should but I don't believe they are present of the RPi board
They sort of exist on GPIO #30 and #31, but their use is not standard, and your typical level shifter only does TX/RX. I just went through this on a recent project with a RPi connected to an (actual) VT100 -- Couldn't go faster than 4800 baud and expect it to work at all, and even there users typing on the terminal could cause spurious escape characters to be generated.
I am thinking of redoing mine with a standard USB-to-serial dongle... wouldn't get the Pi kernel console there, but I could still have a getty.
Incidentally the RF environment within the VT100 itself is more than the Pi's 3.3v single-ended external I/O can handle. ;)
-- Jameel Akari
-- Normal Person: Hey, it seems that you know a lot. Geek: To be honest, it's due to all the surfing I do. Normal Person: So you go surfing? Normal Person: But I don't think that has anything to do with knowing a lot... Geek: I think that's wrong on a fundamental level. Normal Person: Huh? Huh? What?
participants (7)
-
Corey Cohen -
David Williams -
Evan Koblentz -
Jameel Akari -
Joseph Oprysko -
Neil Cherry -
william degnan