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Recent content by EX5707

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    Mounting a FreHD internally in a 4P

    Sorry, no Gerber file. I had hand made 2 boards, installed one and gave the other away. I did document the layout and mounting (see attached). If you do a search on this board by my name, you should find some photos how it goes together. I can't remember exactly what I did with the LEDs, but I...
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    Mounting a FreHD internally in a 4P

    It can be done - a bit of work required, but it looks pretty sweet. What I've been doing on both my 4 and 4P is to add an internal connector for the expansion port. All of the Model 4 motherboards have a internal IO bus connector - shown as J3 in the 4P service manual. There is no connector...
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    ADDS System 70 / Tandy 10

    If any one is looking for a Tandy 10, there's an ADDS System 70 for sale. Vintage ADDS - System 70 - Rare find Cheers!
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    FreHD Model 4 Internal cable routing

    I haven't completed the install on my NGA 4 yet, but on my GA 4P I installed a connector onto the pads just above the edge connector. On the 4P this area is labelled as J3, in the 4, J9. The pinout is the same as the edge connector J2. The pads are actually plate thrus. It is a lot of effort...
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    Unknown motherboard

    Silly question of the day - does anyone recognize this motherboard? The silkscreen shows Tandy 1983, and it sort of looks like its from a Model II, but I don't think it is. https://www.ebay.ca/itm/175040068501?hash=item28c1337b95:g:cT8AAOSw2LhhodbO Thanks!
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    Model 10

    Here's something you don't see every day...
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    Big Box Tandys for sale

    Recently listed in Toronto, Ontario: Model II and Model 12 https://www.kijiji.ca/v-desktop-computers/city-of-toronto/trs-80-computers-2-available/1527631625 Not my listing, just an FYI.
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    CRT compatibility

    Slightly off topic, but can the CRT from a Model III or IV be used in anything else? I have a paper white 14" monochrome VGA monitor that I would like to stick a slow decay green CRT into. The aim is to build an emulator that has the actual, physical look of a TRS-80. I can't find any info on...
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    Model II available

    Not mine, just passing on the link for anyone looking for a Model II. Looks to be in great condition. https://www.kijiji.ca/v-view-details.html?adId=1435631332
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    Videotex

    Not mine, posting in case anyone is looking for this (possibly) rare item. https://www.kijiji.ca/v-desktop-computers/windsor-area-on/radio-shack-trs-80-videotex/1400599761?enableSearchNavigationFlag=true
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    Model II for sale

    Not mine, just posting the link for all interested: https://www.kijiji.ca/v-desktop-computers/city-of-toronto/vintage-trs-80-model-ii-circa-1979/1393553289?enableSearchNavigationFlag=true
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    Model III or 4 composite video out?

    Is it possible to obtain a composite video output from a Model III, 4 or any other TRS-80 that had a built-in monitor?
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    Tandy 2100 ?

    I didn't think this existed: https://www.ebay.com/itm/Tandy-2100-PC-Desktop-Model-10-WORKS-80486-24MB-RAM-ships-worldwide/192479102330?hash=item2cd0a6057a:g:Xu4AAOSw-b9apF1x
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    4p m/b

    Can anyone identify the daughterboard on this Model 4P currently listed on ebay? http://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=152276997107&_sacat=0
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    Model II for sale in Toronto, Ontario (Canada)

    Just passing this along: http://www.kijiji.ca/v-desktop-computers/city-of-toronto/historic-personal-computer/1192614857?enableSearchNavigationFlag=true
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