TI-86 Assembly Programming
After the TI-86 is available for purchase, Texas Instruments will provide several TI-tested
machine language programs for download from this page. Programs include Inferential Statistics,
Probability Distributions, and Finance.
For programmers interested in working with Z80 assembly language on the TI-86, background
documentation on parts of the TI-86 system design will also be made available. Some preliminary information is provided below:
ASM programming that is built into the TI-86 is very different from the syntax
that was
experimented with on the TI-83. The TI-86 system design is also much more
complicated
than that of the TI-83. For those reasons, the documentation will be more complex
for TI to
generate. This document is an attempt to give those TI users with some Z80 ASM programming
experience to have some fun as soon as possible. The information
provided here
may not be enough for an ASM programmer who has not already written any programs for
use on either the
TI-83 or the TI-85. A more detailed document will be generated in
the near future.
There are 3 commands on the TI-86 that deal with ASM programming:
- ASMPRGM
- ASM(
- ASMCOMP(
These are located on the CATALOG menu screen.
ASM programs are entered into the TI-86 as Programs, like the TI-83.
The TI-86 requires that the first command in an ASM program be ASMPRGM.
Starting on the next line is the object code.
NO OTHER SYNTAX IS REQUIRED.
There is no required 'End' command or 'Size' bytes like the TI-83.
Example:
:ASMPRGM
:CD824A
:210300
:220FC0
:215BD7
:CD374A
:CD5F4A
:C9
:48656C6C6F20576F726C6400
;
;
; Below is the source code for the above object
; code
;
;
org _asm_exec_ram
;
call _clrscrn
ld hl,3
ld (_currow),hl ; row 3 col 0
ld hl,hello_world
call _puts ; write the msg
call _newline ; move down a line
ret ; return from prog
;
hello_world:
db 'Hello World',0
TO RUN THIS PROGRAM DO: ASM(progname)
progname = NAME OF THE PROGRAM
ASMCOMP( is a command that converts an ASM program from 'ASCII' storage
to 'HEX' storage and marks the program as protected.
This command will cut the storage needed for an ASM program in half.
It is similar to the program 'SQUISH' for the TI-83.
You only need this for large programs.
syntax: ASMCOMP(prog1,prog2)
prog1 = name of 'ASCII' type ASMPRGM
prog2 = outputted 'hex' version of prog1.
You execute these programs with the ASM( command also.
An include file with some needed equates follows.
Most of these are similar to the TI-83's:
Again, the information above is intended for experienced TI ASM programmers -
more detailed information will follow.
Check out TICALC.ORG and The TI-Files for additional information.
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