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Tandy 3000 on ebay

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  • animekenji
    replied
    Trying to reverse that hack job is going to be more trouble than it's worth, I think. Where would you even get the correct BIOS ROM from this many years later? That's probably why it throws errors on boot. The BIOS is not completely compatible with the motherboard.
    Last edited by animekenji; April 6, 2021, 05:35 PM.

    Leave a comment:


  • Eudimorphodon
    replied
    The Phoenix BIOS copyright date is 1988, which post-dates that revision of the Tandy 3000. (The original "3000 HD" with the 8mhz/512k motherboard as pictured was replaced in the 1988 Tandy catalog with a 12mhz version that took 640k on the motherboard, was listed as having nine expansion slots instead of ten, and had a keylock on the front.) It does seem very unlikely that's the original BIOS chip.

    It's possible they replaced it to support additional hard disk types or something.

    Leave a comment:


  • kb2syd
    replied
    Originally posted by animekenji View Post
    I'm wondering about this as well. Could it have a different BIOS chip installed?
    I've been digging because something doesn't smell right to me. According to the documentation I could find for the 3000 it shipped with:

    CURRENT BIOS ROM Version: 01.03.03

    Leave a comment:


  • animekenji
    replied
    Originally posted by kb2syd View Post

    All Tandy boot screens in this generation would have referenced Tandy Corp.
    I'm wondering about this as well. Could it have a different BIOS chip installed?

    Leave a comment:


  • Eudimorphodon
    replied
    Originally posted by Chuck(G) View Post
    Soldering is a bummer, however. I like socketed RAM.
    The picture's a bit blurry but it looks to me like the motherboard only has 512k of socketed 41256s on it. Error is probably from the SIMM expansion card, unless the machine has a separate 128k backfill on one of the other cards. (Like you'd sometimes find in original IBM ATs.)

    Leave a comment:


  • eswan
    replied
    Here's what I'm seeing in slots in the new pics-

    modem
    empty
    busmouse
    vga
    empty
    empty
    ram board with 4 simms (probably the source of the memory error)
    empty
    floppy/mfm controller cabled for 2 hard drives
    something with a crystal, serial/parallel wouldn't have that would it?

    Leave a comment:


  • Chuck(G)
    replied
    Replacement DRAM should not be a problem. One can even find 4116s on the surplus market as well as 2102s.

    Soldering is a bummer, however. I like socketed RAM.

    Leave a comment:


  • animekenji
    replied
    I don't like the memory error and configuration error messages that it gives on post. Swapping out bad memory chips on 286 systems isn't as straightforward as swapping memory sticks until much later, near the end of the 286 era. I wouldn't relish the thought of having to figure out which chip(s) are generating the error message and then swapping those memory chips directly off the motherboard with a soldering iron, if you can even get correct replacement chips at all anymore. It looks like a potential nightmare to me.

    Leave a comment:


  • kc8eyt
    replied
    I asked the seller to post a few pictures of the motherboard and they are up there now. It is indeed a Tandy motherboard.

    Leave a comment:


  • animekenji
    replied
    Originally posted by Dokken View Post
    is the 3000 rare? i stumbled upon one complete in the box at a flea market a couple of years ago and bought it relatively cheap. not a lot of activity on this model i could find back then.
    It depends. The HL and NL are a lot more common than the HD because they were less than half the price and targeted at the home market. The HD was a business class machine. The thing about business class machines machines is that they were often leased, rather than bought outright, and returned when the lease expired. Vendors would then either strip them for parts to service machines still in the field, or else landfill them and take a tax write off for the residual value because they were obsolete. Not a lot of them would survive into the future. I did an HVAC job at A,T,&T many years ago and they had two pallets of 6300 computers on the loading dock. I asked about them and was told they couldn't give away or sell any of them because they were scrapping them for tax purposes. I've been trying to locate a Compaq SystemPro for a long time, with no luck, and it's because of the leasing issue. I've seen a few parts here and there, but never enough to build a complete system.

    The 3000HD was also the heart of a multi-user Xenix system. I presume that's why they had 10 ISA slots, to plug in some dumb terminals using cards so that many users could use the 3000HD at the the same time.
    Last edited by animekenji; April 5, 2021, 04:40 AM.

    Leave a comment:


  • tipc
    replied
    You don't see them often, but they never seem to tech high prices.

    Leave a comment:


  • Dokken
    replied
    is the 3000 rare? i stumbled upon one complete in the box at a flea market a couple of years ago and bought it relatively cheap. not a lot of activity on this model i could find back then.

    Leave a comment:


  • tipc
    replied
    Mine is in the closet buried. I'll pull it out this week.

    Leave a comment:


  • kb2syd
    replied
    Originally posted by animekenji View Post
    Did RS outsource their computer production then slap a TRS-80 badge on them?
    They did on some stuff, but not the 3000.

    Originally posted by animekenji View Post
    Also, that one has a conventional hard drive. Mine has a hard drive on a card with 5.25 and 3.5 inch floppies in the drive bays. Did they sell them both ways?
    No, the 3000hd did not look like that. I suspect some shenanigans are afoot.

    All Tandy boot screens in this generation would have referenced Tandy Corp.
    Last edited by kb2syd; April 4, 2021, 04:01 PM.

    Leave a comment:


  • tipc
    replied
    The 1200 was a rebadged Tandon. Don't know of any others. The 2000 used a bunch of Mitsubishi components, floppies, monitors. But I want to say most of their machines were made according to their blueprints.

    Leave a comment:

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