Flyback transformer for Televideo TVI-9xx terminal

I am looking for replacement flyback transformers for Televideo TVI-912B terminals. The flyback transformer is labelled "KFS-00093" on the actual part and also in the schematic. This same flyback was used in a range of Televideo terminals (TVI-912B, TVI-920, etc). Does anyone know o

TeleVideo 1603 goodies

I got some high resolution pictures posted of an early rev main board for the system, plus the front/back of unpopulated memory expansion and graphics boards for the system. Maybe someone else out there could find a use for that PCB artwork :)

TeleVideo TS-1603

I finally acquired an elusive TS-1603, and have scanned the manuals that I got with it if anyone is interested: Advertising glossies for various TeleVideo software/hardware: https://drive.google.com/open?id=12ld7EbXgytvX7u9hIVgGKgjbl6o86pc8 TeleVideo Supermouse user's manual: https

Re: Televideo 925 character rom dump

like the 965 use a 4-pin connector with a different pinout, > and +5V supply instead of +12V, but still at > 9600 baud with the same codes as the 970/etc. > Alex Riedlmayer has been doing a lot of work on simulating Televideo terminals in MAME. There should be a lot of (if cryptic)

Re: Televideo 925 character rom dump

On Wed, Apr 24, 2019 at 8:51 PM Al Kossow via cctalk wrote: > > > > The keyboard controller is an 8049. Firmware not readable. > > It may actually be compatible with the 955 keyboard, which I was able to > read. > Key layout is the same, though the manuf is different > The 924 should be

Re: Televideo 925 character rom dump

The keyboard controller is an 8049. Firmware not readable. It may actually be compatible with the 955 keyboard, which I was able to read. Key layout is the same, though the manuf is different

Re: Televideo 925 character rom dump

On 04/24/2019 08:47 PM, Al Kossow via cctalk wrote: > > On 4/24/19 5:46 PM, allison via cctalk wrote: > >> The 8049 is readable just like the 8048 save for 2k device.  I worked >> for NEC back then and had access to intel parts too. > is that true for "HC" parts or just NMOS? > > All!  The HC were

Re: Televideo 925 character rom dump

On 4/24/19 5:46 PM, allison via cctalk wrote: > The 8049 is readable just like the 8048 save for 2k device.  I worked > for NEC back then and had access to intel parts too. is that true for "HC" parts or just NMOS?

Re: Televideo 925 character rom dump

On 04/24/2019 07:55 PM, Guy Dunphy via cctalk wrote: > At 08:14 AM 24/04/2019 -0700, you wrote: >> >> On 4/24/19 5:39 AM, Guy Dunphy wrote: >> >>> The keyboard controller is an 8049. Firmware not readable. >> 8049s aren't protected. they are 2k versions of the 8048 >> and can be read as 8749s > I

Re: Televideo 925 character rom dump

e complex than just a ROM. >> 24 pin character gen ROM/? at U10 is marked: >> >> VTi (logo) >> 350 RN 118 >> 2333-5006 >> 8000142 >> (c)TELEVIDEO 1983 >> KOREA-AE >> >> >> Guy > >Likely an MOS Tech 2333 ROM chip. >http://www.bitsavers.org/components/mosTechnology/_dataBooks/1982_MOS_Technology_Data_Catalog.pdf >See page 2-145 > >Will

Re: Televideo 925 character rom dump

At 08:14 AM 24/04/2019 -0700, you wrote: > > >On 4/24/19 5:39 AM, Guy Dunphy wrote: > >> The keyboard controller is an 8049. Firmware not readable. > >8049s aren't protected. they are 2k versions of the 8048 >and can be read as 8749s I did try reading it as an 8749. By 'not readable' I meant it

Re: Televideo 925 character rom dump

On 4/24/19 5:39 AM, Guy Dunphy wrote: > The keyboard controller is an 8049. Firmware not readable. 8049s aren't protected. they are 2k versions of the 8048 and can be read as 8749s

Re: Televideo 925 character rom dump

118 > 2333-5006 > 8000142 > (c)TELEVIDEO 1983 > KOREA-AE > > > Guy Likely an MOS Tech 2333 ROM chip. http://www.bitsavers.org/components/mosTechnology/_dataBooks/1982_MOS_Technology_Data_Catalog.pdf See page 2-145 Will "A designer knows he has achieved perfec

Re: Televideo 925 character rom dump

At 04:34 PM 23/04/2019 -0700, you wrote: > > >On 4/23/19 3:35 PM, Guy Dunphy via cctalk wrote: [my Televideo 924] > >I have maint manuals for the 925. > >Some photos of the boards and dumps of the keyboard firmware and controller >would be nice to add to bitsavers, si

Re: Televideo 925 character rom dump

ROM from Bitsavers, and then was able to get it working with a hard disk interface. It'd be nice to have a copy of the disk and ROM for reference. It seems like the disks that TeleVideo used failed early and often, so it's probably best to image that sooner rather than later, and hope that it still wo

Re: Televideo 925 character rom dump

Cool, thanks, Al! I'll give that a go. On Tue, Apr 23, 2019 at 5:20 PM Al Kossow via cctalk wrote: > it is the same one used in the 910 180-016A_A17_85AE.bin > > On 4/23/19 12:23 AM, Josh Dersch via cctalk wrote: > > Hi all -- > > > > I'm working on a Televi

Re: Televideo 925 character rom dump

On 4/23/19 3:35 PM, Guy Dunphy via cctalk wrote: > When I saw this thread I thought 'Oh, I have a 925!' Which was working last > time (years ago.) > But wouldn't you know. When I checked, it's a Televideo 924. Off by one. > > But perhaps the character ROM content is the sa

Re: Televideo 925 character rom dump

When I saw this thread I thought 'Oh, I have a 925!' Which was working last time (years ago.) But wouldn't you know. When I checked, it's a Televideo 924. Off by one. But perhaps the character ROM content is the same? Anyway I will see if it still works, and secure all the ROM images. Today. I

Re: Televideo 925 character rom dump

On Tue, Apr 23, 2019 at 8:25 AM Patrick Finnegan wrote: > On Tue, Apr 23, 2019 at 11:02 AM Jon Elson via cctalk < > cctalk@classiccmp.org> wrote: > >> Is the ROM totally bad, or just losing a few bits here and >> there? If the latter, you could probably read it out, figure >> out how the rows,

Re: Televideo 925 character rom dump

On 4/23/19 4:43 AM, Patrick Finnegan via cctalk wrote: > I should be able to do that for you if you don't find someone else with a > dumped room sooner. I was wondering what TS-8xx systems you have that supported RS-422, and if you've dumped the firmware from them. I can request the TS-806/20

Re: Televideo 925 character rom dump

On Tue, Apr 23, 2019 at 11:02 AM Jon Elson via cctalk wrote: > Is the ROM totally bad, or just losing a few bits here and > there? If the latter, you could probably read it out, figure > out how the rows, columns and characters are mapped, and fix it. > Considering that 925s are really common,

Re: Televideo 925 character rom dump

it is the same one used in the 910 180-016A_A17_85AE.bin On 4/23/19 12:23 AM, Josh Dersch via cctalk wrote: > Hi all -- > > I'm working on a Televideo 925 terminal with a few problems, one of which > is a bad character generator ROM, (a MOS 2332). Does anyone have a dump of &g

Re: Televideo 925 character rom dump

On 04/23/2019 02:23 AM, Josh Dersch via cctalk wrote: Hi all -- I'm working on a Televideo 925 terminal with a few problems, one of which is a bad character generator ROM, (a MOS 2332). Does anyone have a dump of this already, or have a working 925 they'd be able to dump the ROM from

Re: Televideo 925 character rom dump

3 Josh Dersch via cctalk > wrote: > > > Hi all -- > > > > I'm working on a Televideo 925 terminal with a few problems, one of which > > is a bad character generator ROM, (a MOS 2332). Does anyone have a dump > of > > this already, or have a working 925

Re: Televideo 925 character rom dump

I should be able to do that for you if you don't find someone else with a dumped room sooner. Patrick Finnegan On Tue, Apr 23, 2019, 03:23 Josh Dersch via cctalk wrote: > Hi all -- > > I'm working on a Televideo 925 terminal with a few problems, one of which > is a bad character g

Televideo 925 character rom dump

Hi all -- I'm working on a Televideo 925 terminal with a few problems, one of which is a bad character generator ROM, (a MOS 2332). Does anyone have a dump of this already, or have a working 925 they'd be able to dump the ROM from? Thanks in advance, Josh

TeleVideo MmmOST replacement

I've finally have cleaned up sources and wrote up some documentation for my TeleVideo MmmOST replacement. Let me know if you have interest in this, need help, or could help me source a working TS-806 to compare this against. https://worldofvax.blogspot.com/2019/04/televideo-systems-part-vii

Re: More TeleVideo, system repair

fighting a bit with Blogger. It details my efforts to resurrect a TS-1605 IBM compatible system that I got off ebay (and probably spent too much money on). https://worldofvax.blogspot.com/2019/01/televideo-systems-part-iii-ts-1605-pcxt.html Pat

More TeleVideo, system repair

I have the next one up, after fighting a bit with Blogger. It details my efforts to resurrect a TS-1605 IBM compatible system that I got off ebay (and probably spent too much money on). https://worldofvax.blogspot.com/2019/01/televideo-systems-part-iii-ts-1605-pcxt.html Pat

RE: TeleVideo

To: cctalk@classiccmp.org Subject: Re: TeleVideo On 1/23/19 1:39 PM, Patrick Finnegan via cctalk wrote: > For anyone interested, I've restarted my blog on things I've been doing > with TeleVideo systems, and have the first two parts (out of maybe a dozen > or so planned) up.

Re: TeleVideo

On 1/23/19 1:39 PM, Patrick Finnegan via cctalk wrote: > For anyone interested, I've restarted my blog on things I've been doing > with TeleVideo systems, and have the first two parts (out of maybe a dozen > or so planned) up. > > http://worldofvax.blogspot.com/2019/01/televid

TeleVideo

For anyone interested, I've restarted my blog on things I've been doing with TeleVideo systems, and have the first two parts (out of maybe a dozen or so planned) up. http://worldofvax.blogspot.com/2019/01/televideo-systems-part-i.html http://worldofvax.blogspot.com/2019/01/televideo-systems-part

TeleVideo Systems stuff

After VCFMW this year, I've been looking at old projects I have and was wondering if anyone has any leads on TeleVideo systems. I'm looking for TS-800 terminals/systems, and interested in probably any 1980s Televideo terminals, depending on price, especially the 950, and 965s... and keyboards

Re: Televideo keyboards

On 1/24/18 3:05 PM, Electronics Plus via cctalk wrote: > I am clearing these out of my stock: > > 4 are beige, with no PN on the back. They have a small RJ9 type connector. 3 > are missing one or more caps. > > 4 are dark on top, and beige on the back. There is no PN. These have the > save

Televideo keyboards

I am clearing these out of my stock: 4 are beige, with no PN on the back. They have a small RJ9 type connector. 3 are missing one or more caps. 4 are dark on top, and beige on the back. There is no PN. These have the save telephone style connector. All are complete. These have not been tested

Re: Televideo 970

> That reminds me, I still have one or two in the garage (yes, stored in > uncontrolled conditions). Maybe a manual as well. If anyone is > interested, contact me off-list. Why do these things always have a Large Body Of Water between me and them :) Cheers A On 23 January 2018 at 21:38, Mark

Re: Televideo 970

That reminds me, I still have one or two in the garage (yes, stored in uncontrolled conditions). Maybe a manual as well. If anyone is interested, contact me off-list. I'm in Austin, Texas, USA. mcl

Re: Televideo 970

ou'll find hundreds of them. Maybe you've seen them already and were just surprised by how small they have become :) Ha, no... I'd actually not looked into it, I just assumed they were long-gone because I'd not seen one used in anything for *years*. The one in the Televideo is surprisingly comp

Re: Televideo 970

> 1) The EMI filter had gone open-circuit - it's one of those metal can types > which is integrated with the IEC power input connector. Are these still > obtainable anywhere? It seems like equipment these days just has the > filtering directly on the PSU board, rather than as a separate module.

Televideo 970

Hi All, I got a lovely Televideo 970 terminal from another list-member over the weekend. Aside from some PSU capacitor issues, it needs a little TLC: 1) The EMI filter had gone open-circuit - it's one of those metal can types which is integrated with the IEC power input connector

Re: TPC-I back in one piece (was Re: TeleVideo progress)

Fine by me! My intent was to see the information shared. I've been helped by the experiences others have shared here and elsewhere, so I'm glad to return the favor. :-) On Sun, Oct 9, 2016 at 8:55 AM, Noel Chiappa wrote: > > From: Ian S. King > > > What I

Re: TPC-I back in one piece (was Re: TeleVideo progress)

> From: Ian S. King > What I want to record here for posterity is how to open one of these > things. I archived this to the Computer History wiki: http://gunkies.org/wiki/TeleVideo_TPC-1 Hope that was OK! Noel

TPC-I back in one piece (was Re: TeleVideo progress)

On Sun, Oct 2, 2016 at 8:20 PM, jim stephens <jwsm...@jwsss.com> wrote: > > > On 10/2/2016 6:23 PM, Ian S. King wrote: > >> Hi all, >> >> I've posted looking for help with a TeleVideo TPC-1, and I've heard a lot >> of crickets >> > I saw your

Re: TeleVideo progress

On 10/2/2016 6:23 PM, Ian S. King wrote: Hi all, I've posted looking for help with a TeleVideo TPC-1, and I've heard a lot of crickets I saw your FB posting, good job, and chirp chirp. I've ordered an exact, tested/guaranteed working replacement from ePay, Those were common drives

TeleVideo progress

Hi all, I've posted looking for help with a TeleVideo TPC-1, and I've heard a lot of crickets - apparently this isn't a commonly held machine. :-) But I've made progress with it, which I want to share. When I first got it, the display would light up and ask me to insert a floppy. Doing so

ISO Televideo 965 eprom images

I was digging around in storage and found a 965 board that is missing its eproms. Does anyone have one handy that they could dump the proms from? It's kind of unusual in that it uses a 65816 cpu. Seems to be a midway design between the earlier 6502's and the later 68000's.

Re: Finally! Opened my TeleVideo TPC-1

More on this: It wasn't simple to get the power supply loose to the point where I can access its circuit board. I had to disengage the rear section, which is also secured to the main case (a U-shaped affair, providing the main section of the case). This involved three more of the plastic