Filename
AShell
Summary
Shell for TI-83/86 calculators.
Authors
Site URL
Ticalc.org URL
TI-83 version 1.0
TI-86 version 1.1
Release Date
July 17, 1997 (TI-86 version 1.1)
December 20, 1997 (TI-83 version 1.0)
Compatibility
TI-83/86
Language
AShell is one of the earlier developed shells for the TI-83/86 calculators, written in Z80 assembly by Bill Nagel.
Significance
AShell was one of many popular shells on the TI-86 and later TI-83 calculators. It was small in size and simple to use, and could run both TI-Basic and assembly programs.
Not long after AShell was released on the TI-83, SOS was released by Joe Wingbermuehle, which covered all of the functionality of AShell plus more, as well as being backwards compatible, in that it could run programs designed for AShell. This caused some tension between himself and the author of AShell, Bill Nagel[1].
Documentation
A portion of the TI-86 readme file is included here:
Installation:
1) Copy AShell.86G to your calc
2) Run AShellNibbles v2.0, Turbo Breakout II v2.0 are included.
Keys:
UP/DOWN - Select a program
MORE - Change page
2ND/ENTER - Run highlighted program
F1 - Help
F2 - Shutdown
F3 - Change Password
EXIT - Exit shell
LEFT/RIGHT - Change contrastChanging the password:
- If you have a password already entered, AShell will ask you to re-enter it
- At the "Enter Password" prompt
If you don't want a password, just press enter.Program Descriptions:
AShell checks for a special table at the beginning of an asm prog
to look for a program description. Here is what the basic format of
Nibbles v2.0 looks like:nop ;Identifies the table
jp Start
.dw $0000 ;Version # of Table
.dw Title ;Absolute pointer to program description
Start:
;ASM program code goes here
Title:
.db "Nibbles v2.0",0
.End
Development History
- July 17, 1997 — TI-86 version 1.1 released
- December 20, 1997 — TI-83 version 1.0 released