Jean-Pierre, the good news is that your hardware is likely directly compatible with 27C256. I say this by looking at the photo you sent showing the main rom, and that other T102 are compatible with 27C256.
But, your board is different, too. I think it would be useful to post your PCB images as an example of a T102 variant for EU. So, we have to hope that your schematic is basically the same. It probably is a "work alike" PCB with minor changes. This would of course make your modem unusable, but hopefully everything else continues to work. Steve On Wed, Nov 18, 2020 at 11:09 AM <jp.van...@belgacom.net> wrote: > Yes, I have compared the ROM provided with Virtual T and my own ROM and > effectively, she are differents. > Like I say to Steve, I wonder if, maybe, I can burn the VIRTUAL T M102 ROM > inside a 27C256 to make a try ? > Naturally, there is a risk of hardware incompatibility, so, this is maybe > not a good idea. > > > This is very strange that Microsoft did an another version of ROM for the > European version. > > > Jean – Pierre > > > > *From:* Stephen Adolph <twospru...@gmail.com> > *Sent:* Wednesday, November 18, 2020 5:00 PM > *To:* m...@bitchin100.com > *Cc:* Model 100 Discussion <m100@lists.bitchin100.com> > *Subject:* Re: [M100] M102 TANDY + TS-DOS + TPDD 100k issue > > yah, we know the rom is different. Already compared. > So, maybe that EU ROM is not really compatible with TS-DOS. > > > On Wed, Nov 18, 2020 at 10:59 AM Kurt McCullum <ku...@fastmail.com> wrote: > >> When using the ROM you sent, Virtual-T does crash like you indicated. I'm >> comparing the ROMs right now. They are different. The first byte I found >> that was different is at 0395h. I'll see what else I can find. >> >> Kurt >> >> On Wed, Nov 18, 2020, at 7:59 AM, jp.van...@belgacom.net wrote: >> >> I dumped the image directly from my ROM with a little program provided by >> Steve. >> >> >> >> >> *From:* Brian White <b.kenyo...@gmail.com> >> *Sent:* Wednesday, November 18, 2020 4:53 PM >> *To:* m...@bitchin100.com >> *Subject:* Re: [M100] M102 TANDY + TS-DOS + TPDD 100k issue >> >> >> Did you actually dump this from your machine? Or is this just on of the >> archived copies like from the rex documentation wiki pages? >> >> >> >> >> >> >> On Wed, Nov 18, 2020, 10:41 AM <jp.van...@belgacom.net> wrote: >> >> Here is the ROM image. >> >> >> Thank you for the test ! >> >> >> >> >> Jean – Pierre >> >> >> >> >> *From:* Kurt McCullum <ku...@fastmail.com> >> *Sent:* Wednesday, November 18, 2020 4:26 PM >> *To:* m100@lists.bitchin100.com >> *Subject:* Re: [M100] M102 TANDY + TS-DOS + TPDD 100k issue >> >> >> I just tried both of these test conditions in Virtual-T with a standard >> 102 rom and TS-DOS 4.1. Neither one hung the emulator. >> >> >> Is the ROM image for your machine available? I'd be happy to test it. >> >> >> Kurt >> >> >> On Wed, Nov 18, 2020, at 7:20 AM, jp.van...@belgacom.net wrote: >> >> Dear all, >> >> >> >> >> >> >> I am a new owner of a tandy Model 102 and I put him an new REX# from >> Steve. >> >> >> >> The REX# run fine but I encouter a strange problem when I activate the >> resident portion of TS-DOS in RAM. >> >> >> >> In fact, when I edit a .DO file in TEXT editor and try to save him with >> the F3 button and a file name like for example: >> >> >> >> 0:test the TEXT editor crash and I must reset the machine. >> >> >> >> When the crash appears, sometime the screen freeze and sometime, a >> portion of code of TELCOM seems to be read because the menu >> >> >> >> PREV UP DOWN FULL of TELCOM appears on the bottom of the screen. >> >> >> >> >> >> >> An another more radical crash occur when you made the following procedure >> : >> >> >> >> 1° activate TS-DOS resident portion >> >> >> >> 2° in BASIC, run the command SOUND 400, 100 >> >> >> >> 3° exit BASIC with the MENU command (or F8) >> >> >> >> 3° in TEXT editor, inpur some text and hit F3 >> >> >> >> 4° input 0:test >> >> >> >> => now, all the screen disappears and the reset button don’t work; I need >> to power off and on the machine to restart. >> >> >> >> >> >> >> With the help of Steve, I tested an image of my ROM into VIRTUAL T and >> the issue can be reproduced. >> >> >> >> >> >> >> So, I wish to ask you if maybe, an owner of a Model 102 know this problem >> or if maybe, it is possible that my ROM image was >> incompatible with the version 4 or 4.1 of TS-DOS ? >> >> >> >> >> >> >> Thank you, >> >> >> >> Jean – Pierre >> >> >> >> >> >> >> >> >> >> >> >> >
