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Info for ti85


====== Texas Instruments TI-85 (1992) ======




===== Features =====

* CPU: Z80 6 MHz
* Memory: RAM 32kB, ROM 128kB
* Screen: 128 x 64 pixels, 21 x 8 characters
* Known ROM versions: 1.0, 2.0, 3.0A, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0
* Link port



===== Usage =====

* After start TI-85 waits for ON key interrupt, so press ON key to start calculator.

* Video engine (with grayscale support) based on the idea found in VTI source emulator written by Rusty Wagner.

* NVRAM is saved properly only when calculator is turned off during MESS exiting.

* To receive data from TI press "R" immediately after TI starts to send data.

* To send data to calculator start receiving on TI and choose file from Built-in File Manager.

* To request screen dump from calculator press "S".

MESS supports several TI-85 versions. You can switch between them, changing the -bios parameter. At command line,

"-bios 0" or "-bios v30a" = V 3.0A

"-bios 1" or "-bios v40" = V 4.0

"-bios 2" or "-bios v50" = V 5.0

"-bios 3" or "-bios v60" = V 6.0

"-bios 4" or "-bios v80" = V 8.0

"-bios 5" or "-bios v90" = V 9.0

"-bios 6" or "-bios v100" = V 10.0



===== Known Issues =====

* Sound emulated (speaker connected to link port)

* Link port emulated

* Grayscale effects emulated

* NVRAM emulated

* 200Hz timer and ON key interrupts emulated

* Snapshot loading (Virtual TI 2.0 save state files)

* To do: port 3 and 4, Better artworks, Drivers for ROM versions: 1.0, 2.0, 7.0

* Needed
* Info about ports 3 (bit 2 seems to be always 0) and 4.
* High quality artwork.
* Dumps of ROM versions: 1.0, 2.0, 7.0



===== History and Trivia =====

The TI-85 was designed as a powerful engineering and calculus calculator. It was the first TI calculator to have a link port and assembly programming capability (through an unintentional loophole). It has since been eclipsed by the TI-86, which features TI-85 compatibility along with more advanced features.

//(info from ticalc.org)//



===== Links =====

* Texas Instruments Homepage -- http://www.ti.com
* ticalc.org -- http://www.ticalc.org
* TI-Files -- http://www.ti-files.org



===== Other Emulators =====

* [[ftp://users.aol.com/davidells/TI-Calc/|TI-85 Emulator by David Ellsworth and others]]
* TI86EMU by Steve Gordon -- http://www.dogtech.com/cybop/ti86
* TI-8X emulator by Randy Gluvna -- http://ti8xemu.home.ml.org
* TIGraph by Rene Doss & Joerg Sander [no link]
* Virtual TI by Rusty Wagner -- http://vti.acz.org




Generated on Sun Jul 19 10:17:28 2009