Re: TI-H: Medium case and TI-81 ASM
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Re: TI-H: Medium case and TI-81 ASM
The EII has 8-bit sound
>want sound, and to make it fit, it will be nescesary to make a recessed
>"Pit" for the volume control. This would not be a popout. The switches
>can be popouts though. Someone mentioned a tilting LCD, but that would
>be a bit more dificult to mold, and would also get into cutting the
>original front half of the case. Put it this way. It would be a pain.
>Another idea, is ROM cartridges. The DBA port could possibly contain
>programs on ROM!!! have a shell automaticly look for the DBA port on
>startup or when a button is pressed and then use it as if it were the
>ROM!
Remember that ROMS are parallel and you only have 2 pins.
>What does everyone think. The case would be fairly simple, and allow
>major expansion. It would have about an inch extention on the left, and
>be even with the right side of the calc. It would probably be 1/2 inch
>deeper, and shouldn't be very difucult to build. There would be two
>models, one for the 81/82/85 and one for the 83/86. THe TI-92 can come
>later.
>
>Final note, I think I may know a way to use ASM on the TI-81!!! We've
>been talking a lot lately about Direct bus access. The TI-81 is nearly
>identical to the TI-85! If we connected the data and address bus to the
>calc and a computer or some type of reader or something, we could look
>at each individual memory location in the calc!!! We could find a way to
>trick the calc into jumping to an unused address by possibly changing
>the memory by manualy writing it to the calc. The address would be a
>nonexistent address on the calc, but on a ROM module, it could allow
>many, many KB of free memory and ASM!!! a Shell module could be plugged
>in and accessed. It would have a through header, so individual ROM or
>RAM modules could be added!!!
>
>I'm sure it could work if anyone wanted to try it! Imagine the
>possibilities. This would also probably work on the TI-80 and every othe
>link capable calc!!!
>
>Richard Piotter
>richfiles1@hotmail.com
>
>The Richfiles TI Page
>http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html
>
>
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