Re: Toshiba T5200 mods and upgrades

Posted on 2020-04-14, 19:23

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, I have two T5200 and in both of them was the original (non-working) Battery when i got them. Battery type is TL-5242 from Tadiran. These are square, have the correct connector and fit perfectly in place. I got new ones from Digikey which work perfectly, obviously they are still manufactured... i …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-03-24, 18:43

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you want to try cooling the 486SXL, Vipersan posted in his thread about some experiments using a thin copper sheet to transfer the heat to the floppy/HD cage: Did you manage to get the other T5200 booting again after disconnecting the battery? Hi, when i disconnect the battery and power up my …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-03-14, 07:16

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you want to try cooling the 486SXL, Vipersan posted in his thread about some experiments using a thin copper sheet to transfer the heat to the floppy/HD cage: https://www.vogons.org/viewtopic.php?f=46&t=57883&start=360#p655035 Did you manage to get the other T5200 booting again after …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-03-13, 20:46

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Think i wont modify anything else for now but great work all this! My japanese T5200 now has a new floppy, a flash IDE disk and since today... a 486 SXL-40 Processor. Thanks to IanB for the hint! :cool: I ran Norton Sysinfo to measure the improvements. Values on the left are from the original one, …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-03-05, 21:19

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Do you see any flash of activity on the right hand leds when you startup? (they normally briefly flash just after power up) Yes, all 3 leds light up for half a second and again after 2 seconds. But there is no harddisk or floppy activity and nothing on the display. Make sure all the connections …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-03-03, 12:55

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Now i have the new Bios running, works perfect! My thanks to IanB! And i replaced the Conner disk with a DeLock 1 GB Flash disk. Boot and start up speed of windows and applications has doubled :) Next thing is that i will try to get the second T5200 working again... Edit: My second T5200 does …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-28, 21:41

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I ordered an upgrade processor on ebay... And i was able to get the last 27c1024 Eprom available in the whole town ;) So i can burn new Bios the next days, my local electronics store will do it for me. One question about RAM. I have 6 MB and guess its impossible to get original RAM nowadays ? Seems …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-27, 13:00

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks!

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-27, 07:19

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Great work! 😀 Btw, is there a good way to look at the content of the bin files ? I tried using notepad++ with hex editor plugin, its viewable but not very pleasant.

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-26, 22:42

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Okay, i think now it worked to get the Bios dump... Filename BIOS310.zip File size 30.42 KiB Downloads 102 downloads File license Fair use/fair dealing exception

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-26, 10:41

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The chips needed for bios are any 1024 type .. Expensive on Ebay ..but relatively cheap on AliExpress Thanks, i checked and i can get 27c1024 eproms for about 8 $ here... have to check if someone can program them for me. Edit: My local dealer can programm the eproms for me, for 5 Euros :) Dont know …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-26, 08:03

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Run this on the machines and select option 8 which will list the BIOS version number at the top. I will do and check it... i am thinking about getting another floppy drive for the second machine, but maybe i just swap the hard disk so i can check the other bios. Perhaps a smaller partition was …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-25, 22:22

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I did start from a dos floppy but it was version 4.01... i would say there was no memory manager. But i did the bios dump again, with a dos 6.22 floppy with nothing on it but the command.com, bios.exe and debug.exe. Here is the new dump: BIOS.zip One question... i have a 100MB Conner disk, here is …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-25, 17:46

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Okay, finally i made it... the floppy is working :-) Many thanks to IanB! I was a little bit confused as the header pin numbers and the layout of the floppy connector on my mitsumi drive did not match, but now its working. I had to make it the other way around. As IanB suggested i made a bios and …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-25, 11:49

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@IanB: Great cpu overview... you put a lot of effort in all this! 😀 Btw, thanks for your message but i am not allowed to answer, my profile is too new.

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-23, 11:08

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I will try to make me an adapter cable at the weekend... otherwise i will wait for your report about the converter after you tried it out. Guess i would go for a IDE Flash drive after switching to a new bios... we will see 😀 Thanks so far for all of your help!

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-23, 10:38

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just looked around for a cf card adapter and found this, a PATA Flash Module... do you think this would work instead of a cf card ? https://us.transcend-info.com/Embedded/Products/No-819

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-23, 10:22

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

jaZz_KCS wrote: I went the way and ordered a 34->26 pin FDD converter, which should arrive shortly and should work out of the box. Where did u get that converter ? I was not able to find one yet...

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-23, 10:20

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Right now, there is nothing on the disks except DOS, so i would not need to keep the data from the Conner disk. Can you recommend a CF card Adapter i could try ? First thing is to get the floppy working... Then i could get a cf adapter incl. cf card and try to replace the conner. Given that the bios …

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Re: Toshiba T5200 mods and upgrades

Posted on 2018-02-23, 08:45

by

by kultakala

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

the first computer I ever touched was my high-school's lone TRS-80 Model 1 with level II basic. The first computer of my own was a Commodore Vic-20. The first *DOS* computer I ever owned, however, was a brand new Toshiba T1100 Plus. First computers i touched were some of commodore's CBM 4000 and …

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