Re: A92: Re: 92+ & 89 Compatibility
[Prev][Next][Index][Thread]
Re: A92: Re: 92+ & 89 Compatibility
-----Message d'origine-----
De : Xavier VASSOR <xvassor@mail.dotcom.fr>
À : assembly-92@lists.ticalc.org <assembly-92@lists.ticalc.org>
Date : lundi 5 avril 1999 22:57
Objet : Re: A92: Re: 92+ & 89 Compatibility
>
>Mathieu Lacage wrote:
>>
>> -----Message d'origine-----
>> De : LuCiDPRoG@aol.com <LuCiDPRoG@aol.com>
>> À : assembly-92@lists.ticalc.org <assembly-92@lists.ticalc.org>
>> Date : lundi 5 avril 1999 06:48
>> Objet : A92: 92+ & 89 Compatibility
>>
>> >
>> > Do the TI-92 + shell developers plan to include the ability to run,
>> >or emulate, TI-89 assembly programs? It seems that many more programs
are
>> >currently in development for this platform (probably because of the
price
>> >difference) and so the ability to run those programs would be very
helpful
>> >indeed. Perhaps even TI-83(+) and TI-86 emulation could be run - I do
know
>> >that the Z80 is totally different from the 68K so I'm not too hopeful of
>> >this, though. The TI-86 has shells which emulate all the Z80 platforms,
so
>> >I'd guess the TI-92+ could successfully emulate the TI-89, if not run
the
>> >code without changes.
>> > One more thing not related to the above topic, does anyone know if it
>> >will be possible to replace the TI-OS with the TI-92+, TI-89 and TI-83+
>> using
>> >the Flash ROM? Thanks for any answers.
>>
>> Well, absolutely not: the OS is stored in the calc ROM... (read ONLY mem)
>
>No, the whole calc ROM in not read-only memory, only the first 64 Kb
>(the first Flash ROM sector) is locked and read-only.
>So it would be possible to replace the whole TIOS... :)
You are joking: there are allmost 2 Mb of ROM: and sth like 300 kb or
flash...
ALL the OS is written in ROM !! Otherwise, your data would be lost during
reset as the "fat" of the flash rom is stored in ram ( i may be wrong on
that last point) but if there is only 64kb of ROM and 1Mb of flash... Well:
it is impossible: can you imagine the price of the calc ? all that flash !!
And: i am talking of 92+: this, i know for sure: there is 1mb of ROM ( or 2,
yes 2 ) and ~300 kb of flash.
and, no: you will never overwrite tiOS...
>
>Xavier VASSOR
>---The Doors Team
>E-mail:xvassor@mail.dotcom.fr
>Doors Homepage: http://start.at/doors
>ICQ:10241721
>
>
Follow-Ups: