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Info for ti81 |
Features:
CPU: Z80 2 MHz
Memory: RAM 32kB(?), ROM 128kB
Screen: 96x64 pixels, 16x8 characters
Known ROM versions: 1.1, 1.8, 2.0
Emulator:
Texas Instruments TI-81 simulator (http://www.ti.com)
Links:
Texas Instruments Homepage - http://www.ti.com
ticalc.org - http://www.ticalc.org
TI-Files - http://www.ti-files.org
MESS Emulation State:
Driver for ROM versions: 1.8
Grayscale effects emulated
200Hz(?) timer and ON key interrupts emulated
There are bugs in port 3 emulation (ON/OFF)
Notes:
1. After start TI-81 waits for ON key interrupt, so press ON key to start
calculator.
2. Video engine (with grayscale support) based on the idea found in VTI source
emulator written by Rusty Wagner.
To do:
port 3 and 4
NVRAM
Better artworks
Drivers for other ROM versions
Needed:
1. Any hardware info.
2. High quality artwork.
3. Dumps of other ROM versions.