52 lines
1.7 KiB
Markdown
52 lines
1.7 KiB
Markdown
Orao Emulator
|
|
============
|
|
|
|
[Orao](https://en.wikipedia.org/wiki/Orao_%28computer%29) is a Croatian 8-bit
|
|
computer used primarily in elementary schools, as part of a computer literacy
|
|
initiative.
|
|
|
|
This is an attempt of an emulator written in Python 2, licensed under the terms
|
|
of the GNU General Public License, version 2 or later (GPLv2+).
|
|
|
|
It implements the 6502 CPU and all peripherals without external dependencies,
|
|
and it's meant to be as short as possible (267 SLOC). Sometimes it cuts
|
|
corners with readability and it's not PEP-8 compliant, but it wouldn't be
|
|
fun to have an emulator 2000 lines of boring, by the book code. Would it? :-)
|
|
|
|
|
|
Additional Requirements
|
|
------------------------------
|
|
|
|
1. Pygame
|
|
2. Numpy
|
|
|
|
Instructions
|
|
-------------
|
|
|
|
Run with python orao.py, enter BASIC using "BC". When asked about the memory
|
|
size, press ENTER unless you don't want BASIC to use the entire available
|
|
memory.
|
|
|
|
WAV files containing programs / games should be located in the wav folder.
|
|
|
|
To save a BASIC program, use SAVE "filename" - a corresponding FILENAME.WAV
|
|
will be created. Load it back using LOAD "filename".
|
|
|
|
DMEM "filename", ADDR, LENGTH can also be used to save a fragment of memory,
|
|
beginning at address ADDR and of length LENGTH (in decimal). LMEM "filename"
|
|
loads it back.
|
|
|
|
Clicking the POWER button does a warm reboot. You can then go back to BASIC
|
|
with BW to keep the memory intact, or re-initialize with BC. The enclosed PDF
|
|
describes the monitor mode and commands, but it is in Croatian only (Google
|
|
Translate can help).
|
|
|
|
Try LMEM "TETRIS" and run it using LNK4096. You can get double quotes by
|
|
pressing shift + 2. Erase by using the left arrow.
|
|
|
|
It *should* be cross-platform.
|
|
|
|
Known bugs
|
|
----------
|
|
|
|
Pygame and Pulseaudio crash occasionally.
|