Jean-Pierre, I think when I looked at the ROM, the sections that were different included the TELCOM section, and I assume that it means the modem tone generation is different. That implies the RC filter networks on the modem circuitry would also be different. I can't say for sure but I believe the ROM functions are written to match the analog capabilities of the modem itself.
but who uses the modem anyways! ..Steve On Wed, Nov 18, 2020 at 1:51 PM <jp.van...@belgacom.net> wrote: > > Yes, I don’t take into account that the ASCII character table was extended > for EU, very interesting ! > > I am a litle bit surprised that Traveling software don’t think about the > European version but after all, > this is normal because in the past, we are not a market of big concern and > Traveling can not support > to write code for a such little market. > > Steve, you say that the modem will be no more usable if I replace the > European ROM image; can you explain why ? > > By the way, here is the link for the pictures of the machine : > > https://e.pcloud.link/publink/show?code=kZ4pH7Z2uHNY094ADm5E2Kv3ccp2Vct8OcX > > > Jean – Pierre > > > > *From:* Kurt McCullum <ku...@fastmail.com> > *Sent:* Wednesday, November 18, 2020 5:15 PM > *To:* m100@lists.bitchin100.com > *Subject:* Re: [M100] M102 TANDY + TS-DOS + TPDD 100k issue > > Most likely, the folks at Traveling Software didn't take into account the > EU version. Or perhaps they were unaware of it. Those details are likely > lost to time. > > As for compatibility. I would check the model number on the main board to > make sure it matches the US mainboard. If not, there could be issues. > Hopefully the ROM patch was something specific to EU use such as the > extended ASCII character table. > > Kurt > > On Wed, Nov 18, 2020, at 8:12 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 > > > > > > > > > > > > > > > > > > > >
